case study interview process

47 case interview examples (from McKinsey, BCG, Bain, etc.)

One of the best ways to prepare for   case interviews  at firms like McKinsey, BCG, or Bain, is by studying case interview examples. 

There are a lot of free sample cases out there, but it's really hard to know where to start. So in this article, we have listed all the best free case examples available, in one place.

The below list of resources includes interactive case interview samples provided by consulting firms, video case interview demonstrations, case books, and materials developed by the team here at IGotAnOffer. Let's continue to the list.

• McKinsey examples
• BCG examples
• Bain examples
• Deloitte examples
• Other firms' examples
• Case books from consulting clubs
• Case interview preparation

Click here to practise 1-on-1 with MBB ex-interviewers

1. mckinsey case interview examples.

• Beautify case interview (McKinsey website)
• Diconsa case interview (McKinsey website)
• Electro-light case interview (McKinsey website)
• GlobaPharm case interview (McKinsey website)
• National Education case interview (McKinsey website)
• Talbot Trucks case interview (McKinsey website)
• Shops Corporation case interview (McKinsey website)
• Conservation Forever case interview (McKinsey website)
• McKinsey case interview guide (by IGotAnOffer)
• Profitability case with ex-McKinsey manager (by IGotAnOffer)
• McKinsey live case interview extract (by IGotAnOffer) - See below

2. BCG case interview examples

• Foods Inc and GenCo case samples  (BCG website)
• Chateau Boomerang written case interview  (BCG website)
• BCG case interview guide (by IGotAnOffer)
• Written cases guide (by IGotAnOffer)
• BCG live case interview with notes (by IGotAnOffer)
• BCG mock case interview with ex-BCG associate director - Public sector case (by IGotAnOffer)
• BCG mock case interview: Revenue problem case (by IGotAnOffer) - See below

3. Bain case interview examples

• CoffeeCo practice case (Bain website)
• FashionCo practice case (Bain website)
• Associate Consultant mock interview video (Bain website)
• Consultant mock interview video (Bain website)
• Written case interview tips (Bain website)
• Bain case interview guide   (by IGotAnOffer)
• Digital transformation case with ex-Bain consultant
• Bain case mock interview with ex-Bain manager (below)

4. Deloitte case interview examples

• Engagement Strategy practice case (Deloitte website)
• Recreation Unlimited practice case (Deloitte website)
• Strategic Vision practice case (Deloitte website)
• Retail Strategy practice case  (Deloitte website)
• Finance Strategy practice case  (Deloitte website)
• Talent Management practice case (Deloitte website)
• Enterprise Resource Management practice case (Deloitte website)
• Footloose written case  (by Deloitte)
• Deloitte case interview guide (by IGotAnOffer)

5. Accenture case interview examples

• Case interview workbook (by Accenture)
• Accenture case interview guide (by IGotAnOffer)

6. OC&C case interview examples

• Leisure Club case example (by OC&C)
• Imported Spirits case example (by OC&C)

7. Oliver Wyman case interview examples

• Wumbleworld case sample (Oliver Wyman website)
• Aqualine case sample (Oliver Wyman website)
• Oliver Wyman case interview guide (by IGotAnOffer)

8. A.T. Kearney case interview examples

• Promotion planning case question (A.T. Kearney website)
• Consulting case book and examples (by A.T. Kearney)
• AT Kearney case interview guide (by IGotAnOffer)

9. Strategy& / PWC case interview examples

• Presentation overview with sample questions (by Strategy& / PWC)
• Strategy& / PWC case interview guide (by IGotAnOffer)

10. L.E.K. Consulting case interview examples

• Case interview example video walkthrough   (L.E.K. website)
• Market sizing case example video walkthrough  (L.E.K. website)

11. Roland Berger case interview examples

• Transit oriented development case webinar part 1  (Roland Berger website)
• Transit oriented development case webinar part 2   (Roland Berger website)
• 3D printed hip implants case webinar part 1   (Roland Berger website)
• 3D printed hip implants case webinar part 2   (Roland Berger website)
• Roland Berger case interview guide   (by IGotAnOffer)

12. Capital One case interview examples

• Case interview example video walkthrough  (Capital One website)
• Capital One case interview guide (by IGotAnOffer)

12. EY Parthenon case interview examples

• Candidate-led case example with feedback (by IGotAnOffer)

14. Consulting clubs case interview examples

• Berkeley case book (2006)
• Columbia case book (2006)
• Darden case book (2012)
• Darden case book (2018)
• Duke case book (2010)
• Duke case book (2014)
• ESADE case book (2011)
• Goizueta case book (2006)
• Illinois case book (2015)
• LBS case book (2006)
• MIT case book (2001)
• Notre Dame case book (2017)
• Ross case book (2010)
• Wharton case book (2010)

Practice with experts

Using case interview examples is a key part of your interview preparation, but it isn’t enough.

At some point you’ll want to practise with friends or family who can give some useful feedback. However, if you really want the best possible preparation for your case interview, you'll also want to work with ex-consultants who have experience running interviews at McKinsey, Bain, BCG, etc.

If you know anyone who fits that description, fantastic! But for most of us, it's tough to find the right connections to make this happen. And it might also be difficult to practice multiple hours with that person unless you know them really well.

Here's the good news. We've already made the connections for you. We’ve created a coaching service where you can do mock case interviews 1-on-1 with ex-interviewers from MBB firms . Start scheduling sessions today!

Related articles:

• Case Interview: A comprehensive guide
• Pyramid Principle
• Hypothesis driven structure
• Fit Interview
• Consulting math
• The key to landing your consulting job
• What is a case interview?
• Types of case interview
• How to solve cases with the Problem-Driven Structure?
• What to remember in case interviews
• Case examples or building blocks?
• How do I prepare for case interviews
• Interview day tips
• How we can help

1. The key to landing your consulting job.

Case interviews - where you are asked to solve a business case study under scrutiny - are the core of the selection process right across McKinsey, Bain and BCG (the “MBB” firms). This interview format is also used pretty much universally across other high-end consultancies; including LEK, Kearney, Oliver Wyman and the consulting wings of the “Big Four”.

If you want to land a job at any of these firms, you will have to ace multiple case interviews.

It is increasingly likely that you will also have to solve online cases given by chatbots. You might need to pass these either before making it to interview or be asked to sit them alongside first round interviews.

Importantly, case studies aren’t something you can just wing . Firms explicitly expect you to have thoroughly prepared and many of your competitors on interview day will have been prepping for months.

Don’t worry though - MCC is here to help!

This article will take you through a full overview of everything you’ll need to know to do well, linking to more detailed articles and resources at each stage to let you really drill down into the details.

As well as traditional case interviews, we’ll also attend to the new formats in which cases are being delivered and otherwise make sure you’re up to speed with recent trends in this overall part of consulting recruitment.

Before we can figure out how to prepare for a case interview, though, we will first have to properly understand in detail what exactly you are up against. What format does a standard consulting case interview take? What is expected of you? How will you be assessed?

Let's dive right in and find out!

Professional help

Before going further, if this sounds like a lot to get your head around on your own, don't worry - help is available!

Our Case Academy course gives you everything you need to know to crack cases like a pro:

Case Academy Course

To put what you learn into practice (and secure some savings in the process) you can add mock interview coaching sessions with expereinced MBB consultants:

Coaching options

And, if you just want an experienced consultant to take charge of the whole selection process for you, you can check out our comprehensive mentoring programmes:

Explore mentoring

Now, back to the article!

2. What is a case interview?

Before we can hope to tackle a case interview, we have to understand what one is.

In short, a case interview simulates real consulting work by having you solve a business case study in conversation with your interviewer.

This case study will be a business problem where you have to advise a client - that is, an imaginary business or similar organisation in need of guidance.

You must help this client solve a problem and/or make a decision. This requires you to analyse the information you are given about that client organisation and figure out a final recommendation for what they should do next.

Business problems in general obviously vary in difficulty. Some are quite straightforward and can be addressed with fairly standard solutions. However, consulting firms exist precisely to solve the tough issues that businesses have failed to deal with internally - and so consultants will typically work on complex, idiosyncratic problems requiring novel solutions.

Some examples of case study questions might be:

• How much would you pay for a banking licence in Ghana?
• Estimate the potential value of the electric vehicle market in Germany
• How much gas storage capacity should a UK domestic energy supplier build?

Consulting firms need the brightest minds they can find to put to work on these important, difficult projects. You can expect the case studies you have to solve in interview, then, to echo the unique, complicated problems consultancies deal with every day. As we’ll explain here, this means that you need to be ready to think outside the box to figure out genuinely novel solutions.

2.1. Where are case interviews in the consulting selection process?

Not everyone who applies to a consulting firm will have a case interview - far from it!

In fact, case interviews are pretty expensive and inconvenient for firms to host, requiring them to take consultants off active projects and even fly them back to the office from location for in-person interviews (although this happens less frequently now). Ideally, firms want to cut costs and save time by narrowing down the candidate pool as much as possible before any live interviews.

As such, there are some hoops to jump through before you make it to interview rounds.

Firms will typically eliminate as much as 80% of the applicant pool before interviews start . For most firms, 50%+ of applicants might be cut based on resumes, before a similar cut is made on those remaining based on aptitude tests. McKinsey currently gives their Solve assessment to most applicants, but will use their resulting test scores alongside resumes to cut 70%+ of the candidate pool before interviews.

You'll need to be on top of your game to get as far as a case interview with a top firm. Getting through the resume screen and any aptitude tests is an achievement in itself! Also we need to note that the general timeline of an application can differ depending on a series of factors, including which position you apply, your background, and the office you are applying to. For example, an undergraduate applying for a Business Analyst position (the entry level job at McKinsey) will most likely be part of a recruitment cycle and as such have pretty fixed dates when they need to sit the pre-screening test, and have the first and second round interviews (see more on those below). Conversely, an experienced hire will most likely have a much greater choice of test and interview dates as well as more time at their disposal to prepare.

For readers not yet embroiled in the selection process themselves, let’s put case interviews in context and take a quick look at each stage in turn. Importantly, note that you might also be asked to solve case studies outside interviews as well…

2.1.1. Application screen

It’s sometimes easy to forget that such a large cut is made at the application stage. At larger firms, this will mean your resume and cover letter is looked at by some combination of AI tools, recruitment staff and junior consulting staff (often someone from your own university).

Only the best applications will be passed to later stages, so make sure to check out our free resume and cover letter guides, and potentially get help with editing , to give yourself the best chance possible.

2.1.2. Aptitude tests and online cases

This part of the selection process has been changing quickly in recent years and is increasingly beginning to blur into the traditionally separate case interview rounds.

In the past, GMAT or PST style tests were the norm. Firms then used increasingly sophisticated and often gamified aptitude tests, like the Pymetrics test currently used by several firms, including BCG and Bain, and the original version of McKinsey’s Solve assessment (then branded as the Problem Solving Game).

Now, though, there is a move towards delivering relatively sophisticated case studies online. For example, McKinsey has replaced half the old Solve assessment with an online case. BCG’s Casey chatbot case now directly replaces a live first round case interview, and in the new era of AI chatbots, we expect these online cases to quickly become more realistic and increasingly start to relieve firms of some of the costs of live case interviews.

Our consultants collectively reckon that, over time, 50% of case interviews are likely to be replaced with these kinds of cases . We give some specific advice for online cases in section six. However, the important thing to note is that these are still just simulations of traditional case interviews - you still need to learn how to solve cases in precisely the same way, and your prep will largely remain the same.

2.1.3. Rounds of Interviews

Now, let’s not go overboard with talk of AI. Even in the long term, the client facing nature of consulting means that firms will have live case interviews for as long as they are hiring anyone. And in the immediate term, case interviews are still absolutely the core of consulting selection.

Before landing an offer at McKinsey, Bain, BCG or any similar firm, you won’t just have one case interview, but will have to complete four to six case interviews, usually divided into two rounds, with each interview lasting approximately 50-60 minutes .

Being invited to first round usually means two or three case interviews. As noted above, you might also be asked to complete an online case or similar alongside your first round interviews.

If you ace first round, you will be invited to second round to face the same again, but more gruelling. Only then - after up to six case interviews in total, can you hope to receive an offer.

2.2. Differences between first and second round interviews

Despite case interviews in the first and second round following the same format, second/final round interviews will be significantly more intense . The seniority of the interviewer, time pressure (with up to three interviews back-to-back), and the sheer value of the job at stake will likely make a second round consulting case interview one of the most challenging moments of your professional life.

There are three key differences between the two rounds:

• Time Pressure : Final round case interviews test your ability to perform under pressure, with as many as three interviews in a row and often only very small breaks between them.
• Focus : Since second round interviewers tend to be more senior (usually partners with 12+ years experience) and will be more interested in your personality and ability to handle challenges independently. Some partners will drill down into your experiences and achievements to the extreme. They want to understand how you react to challenges and your ability to identify and learn from past mistakes.
• Psychological Pressure: While case interviews in the first round are usually more focused on you simply cracking the case, second round interviewers often employ a "bad cop" strategy to test the way you react to challenges and uncertainty.

2.3. What skills do case interviews assess?

Reliably impressing your interviewers means knowing what they are looking for. This means understanding the skills you are being assessed against in some detail.

Overall, it’s important always to remember that, with case studies, there are no strict right or wrong answers. What really matters is how you think problems through, how confident you are with your conclusions and how quick you are with the back of the envelope arithmetic.

The objective of this kind of interview isn’t to get to one particular solution, but to assess your skillset. This is even true of modern online cases, where sophisticated AI algorithms score how you work as well as the solutions you generate.

If you visit McKinsey , Bain and BCG web pages on case interviews, you will find that the three firms look for very similar traits, and the same will be true of other top consultancies.

Broadly speaking, your interviewer will be evaluating you across five key areas:

2.1.1.One: Probing mind

Showing intellectual curiosity by asking relevant and insightful questions that demonstrate critical thinking and a proactive nature. For instance, if we are told that revenues for a leading supermarket chain have been declining over the last ten years, a successful candidate would ask:

“ We know revenues have declined. This could be due to price or volume. Do we know how they changed over the same period? ”

This is as opposed to a laundry list of questions like:

• Did customers change their preferences?
• Which segment has shown the decline in volume?
• Is there a price war in the industry?

2.1.2. Structure

Structure in this context means structuring a problem. This, in turn, means creating a framework - that is, a series of clear, sequential steps in order to get to a solution.

As with the case interview in general, the focus with case study structures isn’t on reaching a solution, but on how you get there.

This is the trickiest part of the case interview and the single most common reason candidates fail.

We discuss how to properly structure a case in more detail in section three. In terms of what your interviewer is looking for at high level, though, key pieces of your structure should be:

• Proper understanding of the objective of the case - Ask yourself: "What is the single crucial piece of advice that the client absolutely needs?"
• Identification of the drivers - Ask yourself: "What are the key forces that play a role in defining the outcome?"

Our Problem Driven Structure method, discussed in section three, bakes this approach in at a fundamental level. This is as opposed to the framework-based approach you will find in older case-solving

Focus on going through memorised sequences of steps too-often means failing to develop a full understanding of the case and the real key drivers.

At this link, we run through a case to illustrate the difference between a standard framework-based approach and our Problem Driven Structure method.

2.1.3. Problem Solving

You’ll be tested on your ability to identify problems and drivers, isolate causes and effects, demonstrate creativity and prioritise issues. In particular, the interviewer will look for the following skills:

• Prioritisation - Can you distinguish relevant and irrelevant facts?
• Connecting the dots - Can you connect new facts and evidence to the big picture?
• Establishing conclusions - Can you establish correct conclusions without rushing to inferences not supported by evidence?

2.1.4. Numerical Agility

In case interviews, you are expected to be quick and confident with both precise and approximated numbers. This translates to:

• Performing simple calculations quickly - Essential to solve cases quickly and impress clients with quick estimates and preliminary conclusions.
• Analysing data - Extract data from graphs and charts, elaborate and draw insightful conclusions.
• Solving business problems - Translate a real world case to a mathematical problem and solve it.

Our article on consulting math is a great resource here, though the extensive math content in our MCC Academy is the best and most comprehensive material available.

2.1.5. Communication

Real consulting work isn’t just about the raw analysis to come up with a recommendation - this then needs to be sold to the client as the right course of action.

Similarly, in a case interview, you must be able to turn your answer into a compelling recommendation. This is just as essential to impressing your interviewer as your structure and analysis.

Consultants already comment on how difficult it is to find candidates with the right communication skills. Add to this the current direction of travel, where AI will be able to automate more and more of the routine analytic side of consulting, and communication becomes a bigger and bigger part of what consultants are being paid for.

So, how do you make sure that your recommendations are relevant, smart, and engaging? The answer is to master what is known as CEO-level communication .

This art of speaking like a CEO can be quite challenging, as it often involves presenting information in effectively the opposite way to how you might normally.

To get it right, there are three key areas to focus on in your communications:

• Top down : A CEO wants to hear the key message first. They will only ask for more details if they think that will actually be useful. Always consider what is absolutely critical for the CEO to know, and start with that. You can read more in our article on the Pyramid Principle .
• Concise : This is not the time for "boiling the ocean" or listing an endless number possible solutions. CEOs, and thus consultants, want a structured, quick and concise recommendation for their business problem, that they can implement immediately.
• Fact-based : Consultants share CEOs' hatred of opinions based on gut feel rather than facts. They want recommendations based on facts to make sure they are actually in control. Always go on to back up your conclusions with the relevant facts.

Being concise and to the point is key in many areas, networking being one for them. For more detail on all this, check out our full article on delivering recommendations .

Prep the right way

3. types of case interview.

While most case interviews share a similar structure, firms will have some differences in the particular ways they like to do things in terms of both the case study and the fit component.

As we’ll see, these differences aren’t hugely impactful in terms of how you prepare. That said, it's always good to know as much as possible about what you will be going up against.

3.1. Different case objectives

A guiding thread throughout this article and our approach in general will be to treat each case as a self-contained problem and not try to pigeonhole it into a certain category. Having said that, there are of course similarities between cases and we can identify certain parameters and objectives.

Broadly speaking, cases can be divided into issue-based cases and strategic decision cases. In the former you will be asked to solve a certain issue, such as declining profits, or low productivity whereas in the latter you will be ask whether your client should or should not do something, such as enter a specific market or acquire another company. The chart below is a good breakdown of these different objectives:

3.2. How do interviewers craft cases

While interviewers will very likely be given a case bank to choose from by their company, a good number of them will also choose to adapt the cases they would currently be working on to a case interview setting. The difference is that the latter cases will be harder to pigeonhole and apply standard frameworks to, so a tailored approach will be paramount.

If you’ve applied for a specific practice or type of consulting - such as operational consulting, for example - it’s very likely that you will receive a case geared towards that particular area alongside a ‘generalist’ consulting case (however, if that’s the case, you will generally be notified). The other main distinction when it comes to case interviews is between interviewer-led and candidate-led.

3.3. Candidate-led cases

Most consulting case interview questions test your ability to crack a broad problem, with a case prompt often going something like:

" How much would you pay to secure the rights to run a restaurant in the British Museum? "

You, as a candidate, are then expected to identify your path to solve the case (that is, provide a structure), leveraging your interviewer to collect the data and test your assumptions.

This is known as a “candidate-led” case interview and is used by Bain, BCG and other firms. From a structuring perspective, it’s easier to lose direction in a candidate-led case as there are no sign-posts along the way. As such, you need to come up with an approach that is both broad enough to cover all of the potential drivers in a case but also tailored enough to the problem you are asked to solve. It’s also up to you to figure out when you need to delve deeper into a certain branch of the case, brainstorm or ask for data. The following case from Bain is an excellent example on how to navigate a candidate-led case.

3.4. Interviewer-led cases

This type of case - employed most famously by McKinsey - is slightly different, with the interviewer controlling the pace and direction of the conversation much more than with other case interviews.

At McKinsey, your interviewer will ask you a set of pre-determined questions, regardless of your initial structure. For each question, you will have to understand the problem, come up with a mini structure, ask for additional data (if necessary) and come to the conclusion that answers the question. This more structured format of case also shows up in online cases by other firms - notably including BCG’s Casey chatbot (with the amusing result that practising McKinsey-style cases can be a great addition when prepping for BCG).

Essentially, these interviewer-led case studies are large cases made up of lots of mini-cases. You still use basically the same method as you would for standard (or candidate-led) cases - the main difference is simply that, instead of using that method to solve one big case, you are solving several mini-cases sequentially. These cases are easier to follow as the interviewer will guide you in the right direction. However, this doesn’t mean you should pay less attention to structure and deliver a generic framework! Also, usually (but not always!) the first question will ask you to map your approach and is the equivalent of the structuring question in candidate-led cases. Sometimes, if you’re missing key elements, the interviewer might prompt you in the right direction - so make sure to take those prompts seriously as they are there to help you get back on track (ask for 30 seconds to think on the prompt and structure your approach). Other times - and this is a less fortunate scenario - the interviewer might say nothing and simply move on to the next question. This is why you should put just as much thought (if not more) into the framework you build for interviewer-led cases , as you may be penalized if you produce something too generic or that doesn’t encompass all the issues of the case.

3.5. Case and fit

The standard case interview can be thought of as splitting into two standalone sub-interviews. Thus “case interviews” can be divided into the case study itself and a “fit interview” section, where culture fit questions are asked.

This can lead to a bit of confusion, as the actual case interview component might take up as little as half of your scheduled “case interview”. You need to make sure you are ready for both aspects.

To illustrate, here is the typical case interview timeline:

• First 15-30 minutes: Fit Interview - with questions assessing your motivation to be a consultant in that specific firm and your traits around leadership and teamwork. Learn more about the fit interview in our in-depth article here .
• Next 30-40 minutes: Case Interview - solving a case study
• Last 5 minutes: Fit Interview again - this time focussing on your questions for your interviewer.

Both the Case and Fit interviews play crucial roles in the finial hiring decision. There is no “average” taken between case and fit interviews: if your performance is not up to scratch in either of the two, you will not be able to move on to the next interview round or get an offer.

NB: No case without fit

Note that, even if you have only been told you are having a case interview or otherwise are just doing a case study, always be prepared to answer fit questions. At most firms, it is standard practice to include some fit questions in all case interviews, even if there are also separate explicit fit interviews, and interviewers will almost invariably include some of these questions around your case. This is perfectly natural - imagine how odd and artificial it would be to show up to an interview, simply do a case and leave again, without talking about anything else with the interviewer before or after.

3.5.1 Differences between firms

For the most part, a case interview is a case interview. However, firms will have some differences in the particular ways they like to do things in terms of both the case study and the fit component.

3.5.2. The McKinsey PEI

McKinsey brands its fit aspect of interviews as the Personal Experience Interview or PEI. Despite the different name, this is really much the same interview you will be going up against in Bain, BCG and any similar firms.

McKinsey does have a reputation for pushing candidates a little harder with fit or PEI questions , focusing on one story per interview and drilling down further into the specific details each time. We discuss this tendency more in our fit interview article . However, no top end firm is going to go easy on you and you should absolutely be ready for the same level of grilling at Bain, BCG and others. Thus any difference isn’t hugely salient in terms of prep.

3.6. What is different in 2023?

For the foreseeable future, you are going to have to go through multiple live case interviews to secure any decent consulting job. These might increasingly happen via Zoom rather than in person, but they should remain largely the same otherwise.

However, things are changing and the rise of AI in recent months seems pretty much guaranteed to accelerate existing trends.

Even before the explosive development of AI chatbots like ChatGPT we have seen in recent months, automation was already starting to change the recruitment process.

As we mentioned, case interviews are expensive and inconvenient for firms to run . Ideally, then, firms will try to reduce the number of interviews required for recruitment as far as possible. For many years, tests of various kinds served to cut down the applicant pool and thus the number of interviews. However, these tests had a limited capacity to assess candidates against the full consulting skillset in the way that case interviews do so well.

More recently, though, the development of online testing has allowed for more and more advanced assessments. Top consulting firms have been leveraging screening tests that better and better capture the same skillset as case interviews. Eventually this is converging on automated case studies. We see this very clearly with the addition of the Redrock case to McKinsey’s Solve assessment.

As these digital cases become closer to the real thing, the line between test and case interview blurs. Online cases don’t just reduce the number of candidates to case interview, but start directly replacing them.

Case in point here is BCG’s Casey chatbot . Previously, BCG had deployed less advanced online cases and similar tests to weed out some candidates before live case interviews began. Now, though, Casey actually replaces one first round case interview.

Casey, at time of writing, is still a relatively “basic” chatbot, basically running through a pre-set script. The Whatsapp-like interface does a lot of work to make it feel like one is chatting to a “real person” - the chatbot itself, though, cannot provide feedback or nudges to candidates as would a human interviewer.

We fully expect that, as soon as BCG and other firms can train a truer AI, these online cases will become more widespread and start replacing more live interviews.

We discuss the likely impacts of advanced AI on consulting recruitment and the industry more broadly in our blog.

Here, though, the real message is that you should expect to run into digital cases as well as traditional case interviews.

Luckily, despite any changes in specific case interview format, you will still need to master the same fundamental skills and prepare in much the same way.

We’ll cover a few ways to help prepare for chatbot cases in section four. Ultimately, though, firms are looking for the same problem solving ability and mindset as a real interviewer. Especially as chatbots get better at mimicking a real interviewer, candidates who are well prepared for case cracking in general should have no problem with AI administered cases.

3.6.1. Automated fit interviews

Analogous to online cases, in recent years there has been a trend towards automated, “one way” fit interviews, with these typically being administered for consultancies by specialist contractors like HireVue or SparkHire.

These are kind of like Zoom interviews, but if the interviewer didn’t show up. Instead you will be given fit questions to answer and must record your answer in your computer webcam. Your response will then go on to be assessed by an algorithm, scoring both what you say and how you say it.

Again, with advances in AI, it is easy to imagine these automated case interviews going from fully scripted interactions, where all candidates are asked the same list of questions, to a more interactive experience. Thus, we might soon arrive at a point where you are being grilled on the details of your stories - McKinsey PEI style - but by a bot rather than a human.

We include some tips on this kind of “one way” fit interview in section six here.

4. How to solve cases with the Problem-Driven Structure?

If you look around online for material on how to solve case studies, a lot of what you find will set out framework-based approaches. However, as we have mentioned, these frameworks tend to break down with more complex, unique cases - with these being exactly the kind of tough case studies you can expect to be given in your case interviews.

To address this problem, the MyConsultingCoach team has synthesized a new approach to case cracking that replicates how top management consultants approach actual engagements.

MyConsultingCoach’s Problem Driven Structure approach is a universal problem solving method that can be applied to any business problem , irrespective of its nature.

As opposed to just selecting a generic framework for each case interview, the Problem Driven Structure approach works by generating a bespoke structure for each individual question and is a simplified version of the roadmap McKinsey consultants use when working on engagements.

The canonical seven steps from McKinsey on real projects are simplified to four for case interview questions, as the analysis required for a six-month engagement is somewhat less than that needed for a 45-minute case study. However, the underlying flow is the same (see the method in action in the video below)

Let's zoom in to see how our method actually works in more detail:

4.1. Identify the problem

Identifying the problem means properly understanding the prompt/question you are given, so you get to the actual point of the case.

This might sound simple, but cases are often very tricky, and many candidates irretrievably mess things up within the first few minutes of starting. Often, they won’t notice this has happened until they are getting to the end of their analysis. Then, they suddenly realise that they have misunderstood the case prompt - and have effectively been answering the wrong question all along!

With no time to go back and start again, there is nothing to do. Even if there were time, making such a silly mistake early on will make a terrible impression on their interviewer, who might well have written them off already. The interview is scuppered and all the candidate’s preparation has been for nothing.

This error is so galling as it is so readily avoidable.

Our method prevents this problem by placing huge emphasis on a full understanding of the case prompt. This lays the foundations for success as, once we have identified the fundamental, underlying problem our client is facing, we focus our whole analysis around finding solutions to this specific issue.

Now, some case interview prompts are easy to digest. For example, “Our client, a supermarket, has seen a decline in profits. How can we bring them up?”. However, many of the prompts given in interviews for top firms are much more difficult and might refer to unfamiliar business areas or industries. For example, “How much would you pay for a banking license in Ghana?” or “What would be your key areas of concern be when setting up an NGO?”

Don’t worry if you have no idea how you might go about tackling some of these prompts!

In our article on identifying the problem and in our full lesson on the subject in our MCC Academy course, we teach a systematic, four step approach to identifying the problem , as well as running through common errors to ensure you start off on the right foot every time!

This is summarised here:

Following this method lets you excel where your competitors mess up and get off to a great start in impressing your interviewer!

4.2. Build your problem driven structure

After you have properly understood the problem, the next step is to successfully crack a case is to draw up a bespoke structure that captures all the unique features of the case.

This is what will guide your analysis through the rest of the case study and is precisely the same method used by real consultants working on real engagements.

Of course, it might be easier here to simply roll out one an old-fashioned framework, and a lot of candidates will do so. This is likely to be faster at this stage and requires a lot less thought than our problem-driven structure approach.

However, whilst our problem driven structure approach requires more work from you, our method has the advantage of actually working in the kind of complex case studies where generic frameworks fail - that is exactly the kind of cases you can expect at an MBB interview .

Since we effectively start from first principles every time, we can tackle any case with the same overarching method. Simple or complex, every case is the same to you and you don’t have to gamble a job on whether a framework will actually work

4.2.1 Issue trees

Issue trees break down the overall problem into a set of smaller problems that you can then solve individually. Representing this on a diagram also makes it easy for both you and your interviewer to keep track of your analysis.

To see how this is done, let’s look at the issue tree below breaking down the revenues of an airline:

These revenues can be segmented as the number of customers multiplied by the average ticket price. The number of customers can be further broken down into a number of flights multiplied by the number of seats, times average occupancy rate. The node corresponding to the average ticket price can then be segmented further.

4.2.2 Hypothesis trees

Hypothesis trees are similar, the only difference being that rather than just trying to break up the issue into smaller issues you are assuming that the problem can be solved and you are formulating solutions.

In the example above, you would assume revenues can be increased by either increasing the average ticket price or the number of customers . You can then hypothesize that you can increase the average occupancy rate in three ways: align the schedule of short and long haul flights, run a promotion to boost occupancy in off-peak times, or offer early bird discounts.

4.2.3 Other structures:structured lists

Structured lists are simply subcategories of a problem into which you can fit similar elements. This McKinsey case answer starts off by identifying several buckets such as retailer response, competitor response, current capabilities and brand image and then proceeds to consider what could fit into these categories.

Buckets can be a good way to start the structure of a complex case but when using them it can be very difficult to be MECE and consistent, so you should always aim to then re-organize them into either an issue or a hypothesis tree.

It is worth noting that the same problem can be structured in multiple valid ways by choosing different means to segment the key issues. Ultimately all these lists are methods to set out a logical hierachy among elements.

4.2.4 Structures in practice

That said, not all valid structures are equally useful in solving the underlying problem. A good structure fulfils several requirements - including MECE-ness , level consistency, materiality, simplicity, and actionability. It’s important to put in the time to master segmentation, so you can choose a scheme isn’t only valid, but actually useful in addressing the problem.

After taking the effort to identify the problem properly, an advantage of our method is that it will help ensure you stay focused on that same fundamental problem throughout. This might not sound like much, but many candidates end up getting lost in their own analysis, veering off on huge tangents and returning with an answer to a question they weren’t asked.

Another frequent issue - particularly with certain frameworks - is that candidates finish their analysis and, even if they have successfully stuck to the initial question, they have not actually reached a definite solution. Instead, they might simply have generated a laundry list of pros and cons, with no clear single recommendation for action.

Clients employ consultants for actionable answers, and this is what is expected in the case interview. The problem driven structure excels in ensuring that everything you do is clearly related back to the key question in a way that will generate a definitive answer. Thus, the problem driven structure builds in the hypothesis driven approach so characteristic of real consulting practice.

You can learn how to set out your own problem driven structures in our article here and in our full lesson in the MCC Academy course.

4.2. Lead the analysis

A problem driven structure might ensure we reach a proper solution eventually, but how do we actually get there?

We call this step " leading the analysis ", and it is the process whereby you systematically navigate through your structure, identifying the key factors driving the issue you are addressing.

Generally, this will mean continuing to grow your tree diagram, further segmenting what you identify as the most salient end nodes and thus drilling down into the most crucial factors causing the client’s central problem.

Once you have gotten right down into the detail of what is actually causing the company’s issues, solutions can then be generated quite straightforwardly.

To see this process in action, we can return to our airline revenue example:

Let’s say we discover the average ticket price to be a key issue in the airline’s problems. Looking closer at the drivers of average ticket price, we find that the problem lies with economy class ticket prices. We can then further segment that price into the base fare and additional items such as food.

Having broken down the issue to such a fine-grained level and considering the 80/20 rule(see below), solutions occur quite naturally. In this case, we can suggest incentivising the crew to increase onboard sales, improving assortment in the plane, or offering discounts for online purchases.

Our article on leading the analysis is a great primer on the subject, with our video lesson in the MCC Academy providing the most comprehensive guide available.

4.4. Provide recommendations

So you have a solution - but you aren’t finished yet!

Now, you need to deliver your solution as a final recommendation.

This should be done as if you are briefing a busy CEO and thus should be a one minute, top-down, concise, structured, clear, and fact-based account of your findings.

The brevity of the final recommendation belies its importance. In real life consulting, the recommendation is what the client has potentially paid millions for - from their point of view, it is the only thing that matters.

In a case interview, your performance in this final summing up of your case is going to significantly colour your interviewer’s parting impression of you - and thus your chances of getting hired!

So, how do we do it right?

Barbara Minto's Pyramid Principle elegantly sums up almost everything required for a perfect recommendation. The answer comes first , as this is what is most important. This is then supported by a few key arguments , which are in turn buttressed by supporting facts .

Across the whole recommendation, the goal isn’t to just summarise what you have done. Instead, you are aiming to synthesize your findings to extract the key "so what?" insight that is useful to the client going forward.

All this might seem like common sense, but it is actually the opposite of how we relay results in academia and other fields. There, we typically move from data, through arguments and eventually to conclusions. As such, making good recommendations is a skill that takes practice to master.

We can see the Pyramid Principle illustrated in the diagram below:

To supplement the basic Pyramid Principle scheme, we suggest candidates add a few brief remarks on potential risks and suggested next steps . This helps demonstrate the ability for critical self-reflection and lets your interviewer see you going the extra mile.

The combination of logical rigour and communication skills that is so definitive of consulting is particularly on display in the final recommendation.

Despite it only lasting 60 seconds, you will need to leverage a full set of key consulting skills to deliver a really excellent recommendation and leave your interviewer with a good final impression of your case solving abilities.

Our specific article on final recommendations and the specific video lesson on the same topic within our MCC Academy are great, comprehensive resources. Beyond those, our lesson on consulting thinking and our articles on MECE and the Pyramid Principle are also very useful.

4.5. What if I get stuck?

Naturally with case interviews being difficult problems there may be times where you’re unsure what to do or which direction to take. The most common scenario is that you will get stuck midway through the case and there are essentially two things that you should do:

• 1. Go back to your structure
• 2. Ask the interviewer for clarification

Your structure should always be your best friend - after all, this is why you put so much thought and effort into it: if it’s MECE it will point you in the right direction. This may seem abstract but let’s take the very simple example of a profitability case interview: if you’ve started your analysis by segmenting profit into revenue minus costs and you’ve seen that the cost side of the analysis is leading you nowhere, you can be certain that the declining profit is due to a decline in revenue.

Similarly, when you’re stuck on the quantitative section of the case interview, make sure that your framework for calculations is set up correctly (you can confirm this with the interviewer) and see what it is you’re trying to solve for: for example if you’re trying to find what price the client should sell their new t-shirt in order to break even on their investment, you should realize that what you’re trying to find is the break even point, so you can start by calculating either the costs or the revenues. You have all the data for the costs side and you know they’re trying to sell 10.000 pairs so you can simply set up the equation with x being the price.

As we’ve emphasised on several occasions, your case interview will be a dialogue. As such, if you don’t know what to do next or don’t understand something, make sure to ask the interviewer (and as a general rule always follow their prompts as they are trying to help, not trick you). This is especially true for the quantitative questions, where you should really understand what data you’re looking at before you jump into any calculations. Ideally you should ask your questions before you take time to formulate your approach but don’t be afraid to ask for further clarification if you really can’t make sense of what’s going on. It’s always good to walk your interviewer through your approach before you start doing the calculations and it’s no mistake to make sure that you both have the same understanding of the data. For example when confronted with the chart below, you might ask what GW (in this case gigawatt) means from the get-go and ask to confirm the different metrics (i.e. whether 1 GW = 1000 megawatts). You will never be penalised for asking a question like that.

5. What to remember in case interviews

If you’re new to case cracking you might feel a bit hopeless when you see a difficult case question, not having any idea where to start.

In fact though, cracking case interviews is much like playing chess. The rules you need to know to get started are actually pretty simple. What will make you really proficient is time and practice.

In this section, we’ll run through a high level overview of everything you need to know, linking to more detailed resources at every step.

5.1. An overall clear structure

You will probably hear this more than you care for but it is the most important thing to keep in mind as you start solving cases, as not only it is a key evaluation criterion but the greatest tool you will have at your disposal. The ability to build a clear structure in all aspects of the case inteview will be the difference between breezing through a complicated case and struggling at its every step. Let’s look a bit closer at the key areas where you should be structured!

5.1.1 Structured notes

Every case interview starts with a prompt, usually verbal, and as such you will have to take some notes. And here is where your foray into structure begins, as the notes you take should be clear, concise and structured in a way that will allow you to repeat the case back to the interviewer without writing down any unnecessary information.

This may sound very basic but you should absolutely not be dismissive about it: taking clear and organized notes will allow what we found helps is to have separate sections for:

• The case brief
• Follow-up questions and answers
• Numerical data
• Case structure (the most crucial part when solving the case)
• Any scrap work during the case (usually calculations)

When solving the case - or, as we call it here, in the Lead the analysis step, it is highly recommended to keep on feeding and integrating your structure, so that you never get lost. Maintaining a clear high level view is one of the most critical aspects in case interviews as it is a key skill in consulting: by constantly keeping track of where you are following your structure, you’ll never lose your focus on the end goal.

In the case of an interviewer-led case, you can also have separate sheets for each question (e.g. Question 1. What factors can we look at that drive profitability?). If you develop a system like this you’ll know exactly where to look for each point of data rather than rummage around in untidy notes. There are a couple more sections that you may have, depending on preference - we’ll get to these in the next sections.

5.1.2 Structured communication

There will be three main types of communication in cases:

• 1. Asking and answering questions
• 2. Walking the interviewer through your structure (either the case or calculation framework - we’ll get to that in a bit!)
• 3. Delivering your recommendation

Asking and answering questions will be the most common of these and the key thing to do before you speak is ask for some time to collect your thoughts and get organised. What you want to avoid is a ‘laundry list’ of questions or anything that sounds too much like a stream of consciousness.

Different systems work for different candidates but a sure-fire way of being organised is numbering your questions and answers. So rather than saying something like ‘I would like to ask about the business model, operational capacity and customer personas’ it’s much better to break it down and say something along the lines of ‘I’ve got three key questions. Firstly I would like to inquire into the business model of our client. Secondly I would like to ask about their operational capacity. Thirdly I would like to know more about the different customer personas they are serving’.

A similar principle should be applied when walking the interviewer through your structure, and this is especially true of online case interviews (more and more frequent now) when the interviewer can’t see your notes. Even if you have your branches or buckets clearly defined, you should still use a numbering system to make it obvious to the interviewer. So, for example, when asked to identify whether a company should make an acquisition, you might say ‘I would like to examine the following key areas. Firstly the financial aspects of this issue, secondly the synergies and thirdly the client’s expertise’

The recommendation should be delivered top-down (see section 4.4 for specifics) and should employ the same numbering principle. To do so in a speedy manner, you should circle or mark the key facts that you encounter throughout the case so you can easily pull them out at the end.

5.1.3 Structured framework

It’s very important that you have a systematic approach - or framework - for every case. Let’s get one thing straight: there is a difference between having a problem-solving framework for your case and trying to force a case into a predetermined framework. Doing the former is an absolute must , whilst doing the latter will most likely have you unceremoniously dismissed.

We have seen there are several ways of building a framework, from identifying several categories of issues (or ‘buckets’) to building an issue or hypothesis tree (which is the most efficient type of framework). For the purpose of organization, we recommend having a separate sheet for the framework of the case, or, if it’s too much to manage, you can have it on the same sheet as the initial case prompt. That way you’ll have all the details as well as your proposed solution in one place.

5.1.4 Structured calculations

Whether it’s interviewer or candidate-led, at some point in the case you will get a bunch of numerical data and you will have to perform some calculations (for the specifics of the math you’ll need on consulting interviews, have a look at our Consulting Math Guide ). Here’s where we urge you to take your time and not dive straight into calculating! And here’s why: while your numerical agility is sure to impress interviewers, what they’re actually looking for is your logic and the calculations you need to perform in order to solve the problem . So it’s ok if you make a small mistake, as long as you’re solving for the right thing.

As such, make it easy for them - and yourself. Before you start, write down in steps the calculations you need to perform. Here’s an example: let’s say you need to find out by how much profits will change if variable costs are reduced by 10%. Your approach should look something like:

• 1. Calculate current profits: Profits = Revenues - (Variable costs + Fixed costs)
• 2. Calculate the reduction in variable costs: Variable costs x 0.9
• 3. Calculate new profits: New profits = Revenues - (New variable costs + Fixed costs)

Of course, there may be more efficient ways to do that calculation, but what’s important - much like in the framework section - is to show your interviewer that you have a plan, in the form of a structured approach. You can write your plan on the sheet containing the data, then perform the calculations on a scrap sheet and fill in the results afterward.

5.2. Common business knowledge and formulas

Although some consulting firms claim they don’t evaluate candidates based on their business knowledge, familiarity with basic business concepts and formulae is very useful in terms of understanding the case studies you are given in the first instance and drawing inspiration for structuring and brainstorming.

If you are coming from a business undergrad, an MBA or are an experienced hire, you might well have this covered already. For those coming from a different background, it may be useful to cover some.

Luckily, you don’t need a degree-level understanding of business to crack case interviews , and a lot of the information you will pick up by osmosis as you read through articles like this and go through cases.

However, some things you will just need to sit down and learn. We cover everything you need to know in some detail in our Case Academy Course course. However, some examples here of things you need to learn are:

• Basic accounting (particularly how to understand all the elements of a balance sheet)
• Basic economics
• Basic marketing
• Basic strategy

Below we include a few elementary concepts and formulae so you can hit the ground running in solving cases. We should note that you should not memorise these and indeed a good portion of them can be worked out logically, but you should have at least some idea of what to expect as this will make you faster and will free up much of your mental computing power. In what follows we’ll tackle concepts that you will encounter in the private business sector as well as some situations that come up in cases that feature clients from the NGO or governmental sector.

5.2.1 Business sector concepts

These concepts are the bread and butter of almost any business case so you need to make sure you have them down. Naturally, there will be specificities and differences between cases but for the most part here is a breakdown of each of them.

5.2.1.1. Revenue

The revenue is the money that the company brings in and is usually equal to the number of products they sell multiplied to the price per item and can be expressed with the following equation:

Revenue = Volume x Price

Companies may have various sources of revenue or indeed multiple types of products, all priced differently which is something you will need to account for in your case interview. Let’s consider some situations. A clothing company such as Nike will derive most of their revenue from the number of products they sell times the average price per item. Conversely, for a retail bank revenue is measured as the volume of loans multiplied by the interest rate at which the loans are given out. As we’ll see below, we might consider primary revenues and ancillary revenues: in the case of a football club, we might calculate primary revenues by multiplying the number of tickets sold by the average ticket price, and ancillary revenues those coming from sales of merchandise (similarly, let’s say average t-shirt price times the number of t-shirts sold), tv rights and sponsorships.

These are but a few examples and another reminder that you should always aim to ask questions and understand the precise revenue structure of the companies you encounter in cases.

5.2.1.2. Costs

The costs are the expenses that a company incurs during its operations. Generally, they can be broken down into fixed and variable costs :

Costs = Fixed Costs + Variable Costs

As their name implies, fixed costs do not change based on the number of units produced or sold. For example, if you produce shoes and are renting the space for your factory, you will have to pay the rent regardless of whether you produce one pair or 100. On the other hand, variable costs depend on the level of activity, so in our shoe factory example they would be equivalent to the materials used to produce each pair of shoes and would increase the more we produce.

These concepts are of course guidelines used in order to simplify the analysis in cases, and you should be aware that in reality often the situation can be more complicated. However, this should be enough for case interviews. Costs can also be quasi-fixed, in that they increase marginally with volume. Take the example of a restaurant which has a regular staff, incurring a fixed cost but during very busy hours or periods they also employ some part-time workers. This cost is not exactly variable (as it doesn’t increase with the quantity of food produced) but also not entirely fixed, as the number of extra hands will depend on how busy the restaurant is. Fixed costs can also be non-linear in nature. Let’s consider the rent in the same restaurant: we would normally pay a fixed amount every month, but if the restaurant becomes very popular we might need to rent out some extra space so the cost will increase. Again, this is not always relevant for case interviews.

5.2.1.3. Profit and profit margin

The profit is the amount of money a company is left with after it has paid all of its expenses and can be expressed as follows:

Profit = Revenue - Costs

It’s very likely that you will encounter a profitability issue in one of your case interviews, namely you will be asked to increase a company’s profit. There are two main ways of doing this: increasing revenues and reducing costs , so these will be the two main areas you will have to investigate. This may seem simple but what you will really need to understand in a case are the key drivers of a business (and this should be done through clarifying questions to the interviewer - just as a real consultant would question their client).

For example, if your client is an airline you can assume that the main source of revenue is sales of tickets, but you should inquire how many types of ticket the specific airline sells. You may naturally consider economy and business class tickets, but you may find out that there is a more premium option - such as first class - and several in-between options. Similarly to our football club example, there may be ancillary revenues from selling of food and beverage as well as advertising certain products or services on flights.

You may also come across the profit margin in case interviews. This is simply the percentage of profit compared to the revenue and can be expressed as follows:

Profit margin = Profit/Revenue x 100

5.2.1.4. Break-even point

An ancillary concept to profit, the break-even point is the moment where revenues equal costs making the profit zero and can be expressed as the following equation:

Revenues = Costs (Fixed costs + Variable costs)

This formula will be useful when you are asked questions such as ‘What is the minimum price I should sell product X?’ or ‘What quantity do I need to sell in order to recoup my investment?’. Let’s say in a case interview an owner of a sandwich store asks us to figure out how many salami and cheese salami sandwiches she needs to sell in order to break even. She’s spending $4 on salami and $2 for cheese and lettuce per sandwich, and believes she can sell the sandwiches at around $7. The cost of utilities and personnel is around $5000 per month. We could lay this all out in the break-even equation:

7 x Q ( quantity ) = (4+2) x Q + 5000 ( variable + fixed costs )

In a different scenario, we may be asked to calculate the break-even price . Let’s consider our sandwich example and say our owner knows she has enough ingredients for about 5000 sandwiches per month but is not sure how much to sell them for. In that case, if we know our break-even equation, we can simply make the following changes:

P ( price ) x 5000 = (4+2) x 5000 + 5000

By solving the equation we get to the price of $7 per sandwich.

5.2.1.5. Market share and market size

We can also consider the market closely with profit, as in fact the company’s performance in the market is what drives profits. The market size is the total number of potential customers for a certain business or product, whereas the market share is the percentage of that market that your business controls (or could control, depending on the case).

There is a good chance you will have to estimate the market size in one of your case interviews and we get into more details on how to do that below. You may be asked to estimate this in either number of potential customers or total value . The latter simply refers to the number of customers multiplied by the average value of the product or service.

To calculate the market share you will have to divide the company’s share by the total market size and multiply by 100:

Note, though, that learning the very basics of business is the beginning rather than the end of your journey. Once you are able to “speak business” at a rudimentary level, you should try to “become fluent” and immerse yourself in reading/viewing/listening to as wide a variety of business material as possible, getting a feel for all kinds of companies and industries - and especially the kinds of problems that can come up in each context and how they are solved. The material put out by the consulting firms themselves is a great place to start, but you should also follow the business news and find out about different companies and sectors as much as possible between now and interviews. Remember, if you’re going to be a consultant, this should be fun rather than a chore!

5.3 Public sector and NGO concepts

As we mentioned, there will be some cases (see section 6.6 for a more detailed example) where the key performance indicators (or KPIs in short) will not be connected to profit. The most common ones will involve the government of a country or an NGO, but they can be way more diverse and require more thought and application of first principles. We have laid out a couple of the key concepts or KPIs that come up below

5.3.1 Quantifiability

In many such scenarios you will be asked to make an important strategic decision of some kind or to optimise a process. Of course these are not restricted to non-private sector cases but this is where they really come into their own as there can be great variation in the type of decision and the types of field.

While there may be no familiar business concepts to anchor yourself onto, a concept that is essential is quantifiability . This means, however qualitative the decision might seem, consultants rely on data so you should always aim to have aspects of a decision that can be quantified, even if the data doesn’t present itself in a straightforward manner.

Let’s take a practical example. Your younger sibling asks you to help them decide which university they should choose if they want to study engineering. One way to structure your approach would be to segment the problem into factors affecting your sibling’s experience at university and experience post-university. Within the ‘at uni’ category you might think about the following:

• Financials : How much are tuition costs and accommodation costs?
• Quality of teaching and research : How are possible universities ranked in the QS guide based on teaching and research?
• Quality of resources : How well stocked is their library, are the labs well equipped etc.?
• Subject ranking : How is engineering at different unis ranked?
• Life on campus and the city : What are the living costs in the city where the university is based? What are the extracurricular opportunities and would your sibling like to live in that specific city based on them?

Within the ‘out of uni’ category you might think about:

• Exit options : What are the fields in which your sibling could be employed and how long does it take the average student of that university to find a job?
• Alumni network : What percentage of alumni are employed by major companies?
• Signal : What percentage of applicants from the university get an interview in major engineering companies and related technical fields?

You will perhaps notice that all the buckets discussed pose quantifiable questions meant to provide us with data necessary to make a decision. It’s no point to ask ‘Which university has the nicest teaching staff?’ as that can be a very subjective metric.

5.3.1 Impact

Another key concept to consider when dealing with sectors other than the private one is how impactful a decision or a line of inquiry is on the overarching issue , or whether all our branches in our issue tree have a similar impact. This can often come in the form of impact on lives, such as in McKinsey’s conservation case discussed below, namely how many species can we save with our choice of habitat.

5.4 Common consulting concepts

Consultants use basic business concepts on an every day basis, as they help them articulate their frameworks to problems. However, they also use some consulting specific tools to quality check their analysis and perform in the most efficient way possible. These principles can be applied to all aspects of a consultant’s work, but for brevity we can say they mostly impact a consultant’s systematic approach and communication - two very important things that are also tested in case interviews. Therefore, it’s imperative that you not only get to know them, but learn how and when to use them as they are at the very core of good casing. They are MECE-ness, the Pareto Principle and the Pyramid principle and are explained briefly below - you should, however, go on to study them in-depth in their respective articles.

Perhaps the central pillar of all consulting work and an invaluable tool to solve cases, MECE stands for Mutually Exclusive and Collectively Exhaustive . It can refer to any and every aspect in a case but is most often used when talking about structure. We have a detailed article explaining the concept here , but the short version is that MECE-ness ensures that there is no overlap between elements of a structure (i.e. the Mutually Exclusive component) and that it covers all the drivers or areas of a problem (Collectively Exhaustive). It is a concept that can be applied to any segmentation when dividing a set into subsets that include it wholly but do not overlap.

Let’s take a simple example and then a case framework example. In simple terms, when we are asked to break down the set ‘cars’ into subsets, dividing cars into ‘red cars’ and ‘sports cars’ is neither mutually exclusive (as there are indeed red sports cars) nor exhaustive of the whole set (i.e. there are also yellow non-sports cars that are not covered by this segmentation). A MECE way to segment would be ‘cars produced before 2000’ and ‘cars produced after 2000’ as this segmentation allows for no overlap and covers all the cars in existence.

Dividing cars can be simple, but how can we ensure MECEness in a case-interview a.k.a. a business situation. While the same principles apply, a good tip to ensure that your structure is MECE is to think about all the stakeholders - i.e. those whom a specific venture involves.

Let’s consider that our client is a soda manufacturer who wants to move from a business-to-business strategy, i.e. selling to large chains of stores and supermarkets, to a business-to-consumer strategy where it sells directly to consumers. In doing so they would like to retrain part of their account managers as direct salespeople and need to know what factors to consider.

A stakeholder-driven approach would be to consider the workforce and customers and move further down the issue tree, thinking about individual issues that might affect them. In the case of the workforce, we might consider how the shift would affect their workload and whether it takes their skillset into account. As for the customers, we might wonder whether existing customers would be satisfied with this move: will the remaining B2B account managers be able to provide for the needs of all their clients and will the fact that the company is selling directly to consumers now not cannibalise their businesses? We see how by taking a stakeholder-centred approach we can ensure that every single perspective and potential issue arising from it is fully covered.

5.4.2 The Pareto Principle

Also known as the 80/20 rule, this principle is important when gauging the impact of a decision or a factor in your analysis. It simply states that in business (but not only) 80% of outcomes come from 20% of causes. What this means is you can make a few significant changes that will impact most of your business organisation, sales model, cost structure etc.

Let’s have a look at 3 quick examples to illustrate this:

• 80% of all accidents are caused by 20% of drivers
• 20% of a company’s products account for 80% of the sales
• 80% of all results in a company are driven by 20% of its employees

The 80/20 rule will be a very good guide line in real engagements as well as case interviews, as it will essentially point to the easiest and most straightforward way of doing things. Let’s say one of the questions in a case is asking you to come up with an approach to understand the appeal of a new beard trimmer. Obviously you can’t interview the whole male population so you might think about setting up a webpage and asking people to comment their thoughts. But what you would get would be a laundry list of difficult to sift through data.

Using an 80/20 approach you would segment the population based on critical factors (age groups, grooming habits etc.) and then approach a significant sample size of each (e.g. 20), analysing the data and reaching a conclusion.

5.4.3 The Pyramid Principle

This principle refers to organising your communication in a top-down , efficient manner. While this is generally applicable, the pyramid principle will most often be employed when delivering the final recommendation to your client. This means - as is implicit in the name - that you would organise your recommendation (and communication in general) as a pyramid, stating the conclusion or most important element at the top then go down the pyramid listing 3 supporting arguments and then further (ideally also 3) supporting arguments for those supporting arguments.

Let’s look at this in practice in a case interview context: your client is a German air-conditioning unit manufacturer who was looking to expand into the French market. However, after your analysis you’ve determined that the market share they were looking to capture would not be feasible. A final recommendation using the Pyramid Principle would sound something like this: ‘I recommend that we do not enter the German market for the following three reasons. Firstly, the market is too small for our ambitions of $50 million. Secondly the market is heavily concentrated, being controlled by three major players and our 5 year goal would amount to controlling 25% of the market, a share larger than that of any of the players. Thirdly, the alternative of going into the corporate market would not be feasible, as it has high barriers to entry.Then, if needed, we could delve deeper into each of our categories

6. Case examples or building blocks?

As we mentioned before, in your case interview preparation you will undoubtedly find preparation resources that claim that there are several standard types of cases and that there is a general framework that can be applied to each type of case. While there are indeed cases that are straightforward at least in appearance and seemingly invite the application of such frameworks, the reality is never that simple and cases often involve multiple or more complicated components that cannot be fitted into a simple framework.

At MCC we don’t want you to get into the habit of trying to identify which case type you’re dealing with and pull out a framework, but we do recognize that there are recurring elements in frameworks that are useful - such as the profitability of a venture (with its revenues and costs), the valuation of a business, estimating and segmenting a market and pricing a product.

We call these building blocks because they can be used to build case frameworks but are not a framework in and of themselves, and they can be shuffled around and rearranged in any way necessary to be tailored to our case. Hence, our approach is not to make you think in terms of case types but work from first principles and use these building blocks to build your own framework. Let’s take two case prompts to illustrate our point.

The first is from the Bain website, where the candidate is asked whether they think it’s a good idea for their friend to open a coffee shop in Cambridge UK (see the case here ). The answer framework provided here is a very straightforward profitability analysis framework, examining the potential revenues and potential costs of the venture:

While this is a good point to start for your case interview (especially taken together with the clarifying questions), we will notice that this approach will need more tailoring to the case - for example the quantity of coffee will be determined by the market for coffee drinkers in Cambridge, which we have to determine based on preference. We are in England so a lot of people will be drinking tea but we are in a university town so perhaps more people than average are drinking coffee as it provides a better boost when studying. All these are some much needed case-tailored hypotheses that we can make based on the initial approach.

Just by looking at this case we might be tempted to say that we can just take a profitability case and apply it without any issues. However, this generic framework is just a starting point and in reality we would need to tailor it much further in the way we had started to do in order to get to a satisfactory answer. For example, the framework for this specific case interview doesn’t cover aspects such as the customer’s expertise: does the friend have any knowledge of the coffee business, such as where to source coffee and how to prepare it? Also, we could argue there may be some legal factors to consider here, such as any approvals that they might need from the city council to run a coffee shop on site, or some specific trade licences that are not really covered in the basic profitability framework.

Let’s take a different case , however, from the McKinsey website. In this scenario, the candidate is being asked to identify some factors in order to choose where to focus the client’s conservation efforts. Immediately we can realise that this case doesn’t lend itself to any pre-packaged framework and we will need to come up with something from scratch - and take a look at McKinsey’s answer of the areas to focus on:

We notice immediately that this framework is 100% tailored to the case - of course there are elements which we encounter in other cases, such as costs and risks but again these are applied in an organic way. It’s pretty clear that while no standard framework would work in this case, the aforementioned concepts - costs and risks - and the way to approach them (a.k.a building blocks ) are fundamentally similar throughout cases (with the obvious specificities of each case).

In what follows, we’ll give a brief description of each building block starting from the Bain example discussed previously, in order to give you a general idea of what they are and their adaptability, but you should make sure to follow the link to the in-depth articles to learn all their ins and outs.

6.1 Estimates and segmentation

This building block will come into play mostly when you’re thinking about the market for a certain product (but make sure to read the full article for more details). Let’s take our Bain Cambridge coffee example. As we mentioned under the quantity bucket we need to understand what the market size for coffee in Cambridge would be - so we can make an estimation based on segmentation .

The key to a good estimation is the ability to logically break down the problem into more manageable pieces. This will generally mean segmenting a wider population to find a particular target group. We can start off with the population of Cambridge - which we estimate at 100.000. In reality the population is closer to 150.000 but that doesn’t matter - the estimation has to be reasonable and not accurate , so unless the interviewer gives you a reason to reconsider you can follow your instinct. We can divide that into people who do and don’t drink coffee. Given our arguments before, we can conclude that 80% of those, so 80.000 drink coffee. Then we can further segment into those who drink regularly - let’s say every day - and those who drink occasionally - let’s say once a week. Based on the assumptions before about the student population needing coffee to function, and with Cambridge having a high student population, we can assume that 80% of those drinking coffee are regular drinkers, so that would be 64.000 regular drinkers and 16.000 occasional drinkers. We can then decide whom we want to target what our strategy needs to be:

This type of estimation and segmentation can be applied to any case specifics - hence why it is a building block.

6.2 Profitability

We had several looks at this building block so far (see an in-depth look here ) as it will show up in most case interivew scenarios, since profit is a key element in any company’s strategy. As we have seen, the starting point to this analysis is to consider both the costs and revenues of a company, and try to determine whether revenues need to be improved or whether costs need to be lowered. In the coffee example, the revenues are dictated by the average price per coffe x the number of coffees sold , whereas costs can be split into fixed and variable .

Some examples of fixed costs would be the rent for the stores and the cost of the personnel and utilities, while the most obvious variable costs would be the coffee beans used and the takeaway containers (when needed). We may further split revenues in this case into Main revenues - i.e. the sales of coffee - and Ancillary revenues , which can be divided into Sales of food products (sales of pastries, sandwiches etc., each with the same price x quantity schema) and Revenues from events - i.e renting out the coffee shop to events and catering for the events themselves. Bear in mind that revenues will be heavily influenced by the penetration rate , i.e. the share of the market which we can capture.

6.3 Pricing

Helping a company determine how much they should charge for their goods or services is another theme that comes up frequently in cases. While it may seem less complicated than the other building blocks, we assure you it’s not - you will have to understand and consider several factors, such as the costs a company is incurring, their general strategic positioning, availability, market trends as well as the customers’ willingness to pay (or WTP in short) - so make sure to check out our in-depth guide here .

In our example, we may determine that the cost per cup (coffee beans, staff, rent) is £1. We want to be student friendly so we should consider how much students would want to pay for a coffee as well as how much are competitors are charging. Based on those factors, it would be reasonable to charge on average £2 per cup of coffee. It’s true that our competitors are charging £3 but they are targeting mostly the adult market, whose willingness to pay is higher, so their pricing model takes that into account as well as the lower volume of customers in that demographic.

6.4. Valuation

A variant of the pricing building block, a valuation problem generally asks the candidate to determine how much a client should pay for a specific company (the target of an acquisition) as well as what other factors to consider. The two most important factors (but not the only ones - for a comprehensive review see our Valuation article ) to consider are the net present value (in consulting interviews usually in perpetuity) and the synergies .

In short, the net present value of a company is how much profit it currently brings in, divided by how much that cash flow will depreciate in the future and can be represented with the equation below:

The synergies refer to what could be achieved should the companies operate as one, and can be divided into cost and revenue synergies .

Let’s expand our coffee example a bit to understand these. Imagine that our friend manages to open a chain of coffee shops in Cambridge and in the future considers acquiring a chain of take-out restaurants. The most straightforward example of revenue synergies would be cross-selling, in this case selling coffee in the restaurants as well as in the dedicated stores, and thus getting an immediate boost in market share by using the existing customers of the restaurant chain. A cost synergy would be merging the delivery services of the two businesses to deliver both food and coffee, thus avoiding redundancies and reducing costs associated with twice the number of drivers and vehicles.

6.5. Competitive interaction

This component of cases deals with situations where the market in which a company is operating changes and the company must decide what to do. These changes often have to do with a new player entering the market (again for more details make sure to dive into the Competitive Interaction article ).

Let’s assume that our Cambridge coffee shop has now become a chain and has flagged up to other competitors that Cambridge is a blooming market for coffee. As such, Starbucks has decided to open a few stores in Cambridge themselves, to test this market. The question which might be posed to a candidate is what should our coffee chain do. One way (and a MECE one) to approach the problem is to decide between doing something and doing nothing . We might consider merging with another coffee chain and pooling our resources or playing to our strengths and repositioning ourselves as ‘your student-friendly, shop around the corner’. Just as easily we may just wait the situation out and see whether indeed Starbucks is cutting into our market share - after all, the advantages of our product and services might speak for themselves and Starbucks might end up tanking. Both of these are viable options if argued right and depending on the further specifics of the case.

6.6. Special cases

Most cases deal with private sectors, where the overarching objective entails profit in some form. However, as hinted before, there are cases which deal with other sectors where there are other KPIs in place . The former will usually contain one or several of these building blocks whereas the latter will very likely have neither. This latter category is arguably the one that will stretch your analytical and organisational skills to the limit, since there will be very little familiarity that you can fall back on (McKinsey famously employs such cases in their interview process).

So how do we tackle the structure for such cases? The short answer would be starting from first principles and using the problem driven structure outlined above, but let’s look at a quick example in the form of a McKinsey case :

The first question addressed to the candidate is the following:

This is in fact asking us to build a structure for the case. So what should we have in mind here? Most importantly, we should start with a structure that is MECE and we should remember to do that by considering all the stakeholders . They are on the one hand the government and affiliated institutions and on the other the population. We might then consider which issues might arise for each shareholder and what the benefits for them would be, as well as the risks. This approach is illustrated in the answer McKinsey provides as well:

More than anything, this type of case shows us how important it is to practise and build different types of structures, and think about MECE ways of segmenting the problem.

7. How Do I prepare for case interviews

In consulting fashion, the overall preparation can be structured into theoretical preparation and practical preparation , with each category then being subdivided into individual prep and prep with a partner .

As a general rule, the level and intensity of the preparation will differ based on your background - naturally if you have a business background (and have been part of a consulting club or something similar) your preparation will be less intensive than if you’re starting from scratch. The way we suggest you go about it is to start with theoretical preparation , which means learning about case interviews, business and basic consulting concepts (you can do this using free resources - such as the ones we provide - or if you want a more through preparation you can consider joining our Case Academy as well).

You can then move on to the practical preparation which should start with doing solo cases and focusing on areas of improvement, and then move on to preparation with a partner , which should be another candidate or - ideally - an ex-consultant.

Let’s go into more details with respect to each type of preparation.

7.1. Solo practice

The two most important areas of focus in sole preparation are:

• Mental math

As we mentioned briefly, the best use of your time is to focus on solving cases. You can start with cases listed on MBB sites since they are clearly stated and have worked solutions as well (e.g. Bain is a good place to start) and then move to more complex cases (our Case Library also offers a range of cases of different complexities). To build your confidence, start out on easier case questions, work through with the solutions, and don't worry about time. As you get better, you can move on to more difficult cases and try to get through them more quickly. You should practice around eight case studies on your own to build your confidence.

Another important area of practice is your mental mathematics as this skill will considerably increase your confidence and is neglected by many applicants - much to their immediate regret in the case interview. Find our mental math tool here or in our course, and practice at least ten minutes per day, from day one until the day before the interview.

7.2. Preparation with a partner

There are aspects of a case interview - such as asking clarifying questions - which you cannot do alone and this is why, after you feel comfortable, you should move on to practice with another person. There are two options here:

• Practicing with a peer
• Practicing with an ex-consultant

In theory they can be complementary - especially if you’re peer is also preparing for consulting interviews - and each have advantages and disadvantages. A peer is likely to practice with you for free for longer, however you may end up reinforcing some bad habits or unable to get actionable feedback. A consultant will be able to provide you the latter but having their help for the same number of hours as a peer will come at a higher cost. Let’s look at each option in more detail.

7.2.1. Peer preparation

Once you have worked through eight cases solo, you should be ready to simulate the case interview more closely and start working with another person.

Here, many candidates turn to peer practice - that is, doing mock case interviews with friends, classmates or others also applying to consulting. If you’re in university, and especially in business school, there will very likely be a consulting club for you to join and do lots of case practice with. If you don’t have anyone to practice, though, or if you just want to get a bit more volume in with others, our free meeting board lets you find fellow applicants from around the world with whom to practice. We recommend practicing around 10 to 15 ‘live’ cases to really get to a point where you feel comfortable.

7.2.2. Preparation with a consultant

You can do a lot practising by yourself and with peers. However, nothing will bring up your skills so quickly and profoundly as working with a real consultant.

Perhaps think about it like boxing. You can practice drills and work on punch bags all you want, but at some point you need to get into the ring and do some actual sparring if you ever want to be ready to fight.

Practicing with an ex consultant is essentialy a simulation of a case interview. Of course, it isn’t possible to secure the time of experienced top-tier consultants for free. However, when considering whether you should invest to boost your chances of success, it is worth considering the difference in your salary over even just a few years between getting into a top-tier firm versus a second-tier one. In the light of thousands in increased annual earnings (easily accumulating into millions over multiple years), it becomes clear that getting expert interview help really is one of the best investments you can make in your own future.

Should you decide to make this step, MyConsultingCoach can help, offering bespoke mentoring programmes , where you are paired with a 5+ year experienced, ex-MBB mentor of your choosing, who will then oversee your whole case interview preparation from start to finish - giving you your best possible chance of landing a job!

7.3. Practice for online interviews

Standard preparation for interview case studies will carry directly over to online cases.

However, if you want to do some more specific prep, you can work through cases solo to a timer and using a calculator and/or Excel (online cases generally allow calculators and second computers to help you, whilst these are banned in live case interviews).

Older PST-style questions also make great prep, but a particularly good simulation is the self-assessment tests included in our Case Academy course . These multiple choice business questions conducted with a strict time limit are great preparation for the current crop of online cases.

7.4. Fit interviews

As we’ve noted, even something billed as a case interview is very likely to contain a fit interview as a subset.

We have an article on fit interviews and also include a full set of lessons on how to answer fit questions properly as a subset of our comprehensive Case Academy course .

Here though, the important thing to convey is that you take preparing for fit questions every bit as seriously as you do case prep.

Since they sound the same as you might encounter when interviewing for other industries, the temptation is to regard these as “just normal interview questions”.

However, consulting firms take your answers to these questions a good deal more seriously than elsewhere.

This isn’t just for fluffy “corporate culture” reasons. The long hours and close teamwork, as well as the client-facing nature of management consulting, mean that your personality and ability to get on with others is going to be a big part of making you a tolerable and effective co-worker.

If you know you’ll have to spend 14+ hour working days with someone you hire and that your annual bonus depends on them not alienating clients, you better believe you’ll pay attention to their character in interview.

There are also hard-nosed financial reasons for the likes of McKinsey, Bain and BCG to drill down so hard on your answers.

In particular, top consultancies have huge issues with staff retention. The average management consultant only stays with these firms for around two years before they have moved on to a new industry.

In some cases, consultants bail out because they can’t keep up with the arduous consulting lifestyle of long hours and endless travel. In many instances, though, departing consultants are lured away by exit opportunities - such as the well trodden paths towards internal strategy roles, private equity or becoming a start-up founder.

Indeed, many individuals will intentionally use a two year stint in consulting as something like an MBA they are getting paid for - giving them accelerated exposure to the business world and letting them pivot into something new.

Consulting firms want to get a decent return on investment for training new recruits. Thus, they want hires who not only intend to stick with consulting longer-term, but also have a temperament that makes this feasible and an overall career trajectory where it just makes sense for them to stay put.

This should hammer home the point that, if you want to get an offer, you need to be fully prepared to answer fit questions - and to do so excellently - any time you have a case interview.

8. Interview day - what to expect, with tips

Of course, all this theory is well and good, but a lot of readers might be concerned about what exactly to expect in real life . It’s perfectly reasonable to want to get as clear a picture as possible here - we all want to know what we are going up against when we face a new challenge!

Indeed, it is important to think about your interview in more holistic terms, rather than just focusing on small aspects of analysis. Getting everything exactly correct is less important than the overall approach you take to reasoning and how you communicate - and candidates often lose sight of this fact.

In this section, then, we’ll run through the case interview experience from start to finish, directing you to resources with more details where appropriate. As a supplement to this, the following video from Bain is excellent. It portrays an abridged version of a case interview, but is very useful as a guide to what to expect - not just from Bain, but from McKinsey, BCG and any other high-level consulting firm.

8.1. Getting started

Though you might be shown through to the office by a staff member, usually your interviewer will come and collect you from a waiting area. Either way, when you first encounter them, you should greet your interviewer with a warm smile and a handshake (unless they do not offer their hand). Be confident without verging into arrogance. You will be asked to take a seat in the interviewer’s office, where the case interview can then begin.

8.1.1. First impressions

In reality, your assessment begins before you even sit down at your interviewer’s desk. Whether at a conscious level or not, the impression you make within the first few seconds of meeting your interviewer is likely to significantly inform the final hiring decision (again, whether consciously or not).

Your presentation and how you hold yourself and behave are all important . If this seems strange, consider that, if hired, you will be personally responsible for many clients’ impressions of the firm. These things are part of the job! Much of material on the fit interview is useful here, whilst we also cover first impressions and presentation generally in our article on what to wear to interview .

As we have noted above, your interview might start with a fit segment - that is, with the interviewer asking questions about your experiences, your soft skills, and motivation to want to join consulting generally and that firm in particular. In short, the kinds of things a case study can’t tell them about you. We have a fit interview article and course to get you up to speed here.

8.1.2. Down to business

Following an initial conversation, your interviewer will introduce your case study , providing a prompt for the question you have to answer. You will have a pen and paper in front of you and should (neatly) note down the salient pieces of information (keep this up throughout the interview).

It is crucial here that you don’t delve into analysis or calculations straight away . Case prompts can be tricky and easy to misunderstand, especially when you are under pressure. Rather, ask any questions you need to fully understand the case question and then validate that understanding with the interviewer before you kick off any analysis. Better to eliminate mistakes now than experience that sinking feeling of realising you have gotten the whole thing wrong halfway through your case!

This process is covered in our article on identifying the problem and in greater detail in our Case Academy lesson on that subject.

8.1.3. Analysis

Once you understand the problem, you should take a few seconds to set your thoughts in order and draw up an initial structure for how you want to proceed. You might benefit from utilising one or more of our building blocks here to make a strong start. Present this to your interviewer and get their approval before you get into the nuts and bolts of analysis.

We cover the mechanics of how to structure your problem and lead the analysis in our articles here and here and more thoroughly in the MCC Case Academy . What it is important to convey here, though, is that your case interview is supposed to be a conversation rather than a written exam . Your interviewer takes a role closer to a co-worker than an invigilator and you should be conversing with them throughout.

Indeed, how you communicate with your interviewer and explain your rationale is a crucial element of how you will be assessed. Case questions in general, are not posed to see if you can produce the correct answer, but rather to see how you think . Your interviewer wants to see you approach the case in a structured, rational fashion. The only way they are going to know your thought processes, though, is if you tell them!

To demonstrate this point, here is another excellent video from Bain, where candidates are compared.

Note that multiple different answers to each question are considered acceptable and that Bain is primarily concerned with the thought processes of the candidate’s exhibit .

Another reason why communication is absolutely essential to case interview success is the simple reason that you will not have all the facts you need to complete your analysis at the outset. Rather, you will usually have to ask the interviewer for additional data throughout the case to allow you to proceed .

NB: Don't be let down by your math!

Your ability to quickly and accurately interpret these charts and other figures under pressure is one of the skills that is being assessed. You will also need to make any calculations with the same speed and accuracy (without a calculator!). As such, be sure that you are up to speed on your consulting math .

8.1.4. Recommendation

Finally, you will be asked to present a recommendation. This should be delivered in a brief, top-down "elevator pitch" format , as if you are speaking to a time-pressured CEO. Again here, how you communicate will be just as important as the details of what you say, and you should aim to speak clearly and with confidence.

For more detail on how to give the perfect recommendation, take a look at our articles on the Pyramid Principle and providing recommendations , as well the relevant lesson within MCC Academy .

8.1.5. Wrapping up

After your case is complete, there might be a few more fit questions - including a chance for you to ask some questions of the interviewer . This is your opportunity to make a good parting impression.

We deal with the details in our fit interview resources. However, it is always worth bearing in mind just how many candidates your interviewers are going to see giving similar answers to the same questions in the same office. A pretty obvious pre-requisite to being considered for a job is that your interviewer remembers you in the first place. Whilst you shouldn't do something stupid just to be noticed, asking interesting parting questions is a good way to be remembered.

Now, with the interview wrapped up, it’s time to shake hands, thank the interviewer for their time and leave the room .

You might have other case interviews or tests that day or you might be heading home. Either way, if know that you did all you could to prepare, you can leave content in the knowledge that you have the best possible chance of receiving an email with a job offer. This is our mission at MCC - to provide all the resources you need to realise your full potential and land your dream consulting job!

8.2. Remote and one-way interview tips

Zoom case interviews and “one-way” automated fit interviews are becoming more common as selection processes are increasingly remote, with these new formats being accompanied by their own unique challenges.

Obviously you won’t have to worry about lobbies and shaking hands for a video interview. However, a lot remains the same. You still need to do the same prep in terms of getting good at case cracking and expressing your fit answers. The specific considerations around remote case interviews are, in effect, around making sure you come across as effectively as you would in person.

8.2.1. Connection

It sounds trivial, but a successful video case interview of any kind presupposes a functioning computer with a stable and sufficient internet connection.

Absolutely don’t forget to have your laptop plugged in, as your battery will definitely let you down mid-interview. Similarly, make sure any housemates or family know not to use the microwave, vacuum cleaner or anything else that makes wifi cut out (or makes a lot of noise, obviously)

If you have to connect on a platform you don’t use much (for example, if it’s on Teams and you’re used to Zoom), make sure you have the up to date version of the app in advance, rather than having to wait for an obligatory download and end up late to join. Whilst you’re at it, make sure you’re familiar with the controls etc. At the risk of being made fun of, don’t be afraid to have a practice call with a friend.

8.2.2. Dress

You might get guidance on a slightly more relaxed dress code for a Zoom interview. However, if in doubt, dress as you would for the real thing (see our article here ).

Either way, always remember that presentation is part of what you are being assessed on - the firm needs to know you can be presentable for clients. Taking this stuff seriously also shows respect for your interviewer and their time in interviewing you.

8.2.3. Lighting

An aspect of presentation that you have to devote some thought to for a Zoom case interview is your lighting.

Hopefully, you long ago nailed a lighting set-up during the Covid lockdowns. However, make sure to check your lighting in advance with your webcam - bearing in mind what time if day your case interview actually is. If your case interview is late afternoon, don’t just check in the morning. Make sure you aren’t going to be blinded from light coming in a window behind your screen, or that you end up with the weird shadow stripes from blinds all over your face.

Natural light is always best, but if there won’t be much of that during your interview, you’ll likely want to experiment with moving some lamps around.

8.2.4. Clarity

The actual stories you tell in an automated “one-way” fit interview will be the same as for a live equivalent. If anything, things should be easier, as you can rattle off a practised monologue without an interviewer interrupting you to ask for clarifications.

You can probably also assume that the algorithm assessing your performance is sufficiently capable that it will be observing you at much the same level as a human interviewer. However, it is probably still worth speaking as clearly as possible with these kinds of interviews and paying extra attention to your lighting to ensure that your face is clearly visible.

No doubt the AIs scoring these interviews are improving all the time, but you still want to make their job as easy as possible. Just think about the same things as you would with a live Zoom case interview, but more so.

9. How we can help

There are lots of great free resources on this site to get you started with preparation, from all our articles on case solving and consulting skills to our free case library and peer practice meeting board .

To step your preparation up a notch, though, our Case Academy course will give you everything you need to know to solve the most complex of cases - whether those are in live case interviews, with chatbots, written tests or any other format.

Whatever kind of case you end up facing, nothing will bring up your skillset faster than the kind of acute, actionable feedback you can get from a mock case interview a real, MBB consultant. Whilst it's possible to get by without this kind of coaching, it does tend to be the biggest single difference maker for successful candidates.

You can find out more on our coaching page:

Explore Coaching

Of course, for those looking for a truly comprehensive programme, with a 5+ year experienced MBB consultant overseeing their entire prep personally, from networking and applications right through to your offer, we have our mentoring programmes.

You can read more here:

Comprehensive Mentoring

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What Is a Case Study?

What is a case study interview, how to prep for a case study interview, case study interview example questions, during the case study interview.

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Table of Contents

A case study interview isn’t your average interview. While most interviews ask you to give examples of how you use your skills on the job, in a case study interview, you’ll use those skills in front of the interviewer to solve a real-life problem.

It’s like auditioning for the school play. But instead of showing you can sing and dance, you’re using a case interview to show how you provide innovative solutions to pressing business problems. Not sure how to get ready for this kind of interview? We’ve got you covered. This guide explains how to prep for a case study interview.

Case studies are used across a variety of industries — everything from business to medicine. They are an in-depth examination, analysis, and critique of a real-world scenario the company experienced. People discuss the situation and explore what they learned while forming new solutions to try when they face a similar situation in the future and hope to improve their performance.

For example, doctors and nurses use case studies to improve how they diagnose and treat patients. Using real patient information, the medical team analyzes the case to see what the team may have missed and why they missed it. Learning from these errors helps the team better prepare for similar cases in the future to improve patient care.

While many industries use case studies to iterate and improve their performance, not every company uses case study interviews. This type of interview is very common at consulting companies (no matter what kind of consulting it is). But it’s not unusual for companies outside of consulting to use case interviews for marketing or operations roles.

In a case study interview, you’re given a real-world situation the company has faced and are tasked with analyzing it and suggesting a course of action.

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Skills you’ll build: Prioritizing, planning, data analysis, error spotting, communication, strategic thinking

Businesses use case study interviews to assess your abilities in real-time. While you’ll probably draw on a variety of skills, most case study interviews assess:

• Strategic thinking
• Analytical skills
• Common sense

The advantage of a case study interview is that the interviewer can evaluate your ability in each of these areas and see how you’ll actually use them on the job.

What Is a Fit Interview?

Some people use “case study interview” and “fit interview” interchangeably. While a fit interview and a case study interview both ask behavioral interview questions , they are not the same thing.

A case study interview assesses your ability to do the job. It primarily evaluates how you approach business problems and use your skills to solve them. A fit interview is about company culture fit. The interviewer asks questions that assess how well you’ll fit into the company, like asking you questions about what motivates you or how you lead .

Fit and case interviews are important parts of the evaluation process. Getting the job done is just as critical as getting along with coworkers and supporting the company’s mission. Depending on where you interview, you may have one fit interview and one case study interview, or the fit interview may be a smaller part of the case study interview.

What You’ll Learn in a Case Study Interview

A case study interview allows the hiring manager to see your skills in action and how you approach business challenges. But it also teaches you a lot about the company (even if you’re doing most of the talking).

In a sense, you’re behaving as an employee during a case study interview. This gives you a peek behind the curtain, allowing you to see the company’s inner workings, like how they approach business problems and what they expect from you and your performance.

For example, you may offer a novel approach to solving a problem during a case interview. How does the interviewer react to it? Are they impressed? Surprised? Is there a scowl or frown on their face? Their reaction gives you insights into how the company will likely receive your solutions.

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Depending on the specific company, you may have the case study interview questions in advance, but you may not. Whether you do or don’t, here’s how to prepare for a case study interview.

Conduct Deep Research

Good interview prep for any interview means researching the company. That includes things like learning more about the company’s mission and the challenges the industry faces. But when you’re preparing for a case study interview, your research needs to go deeper. 

When you answer a case study question, your answer has to be specific to the company’s clients or business objectives. For example, if you’re interviewing for a role in strategy consulting , your answer shouldn’t focus on aspects of human resources consulting (unless it’s particularly relevant).

Your research needs to include the kinds of clients the company works with and what types of problems the company solves. For example, the company may only consult for Fortune 100 companies that need accounting advice. Keep these facts in mind as you prepare for the interview.

Case Study Interview Formats

There are four types of case study interview formats:

• Candidate-led: The interviewer asks you a specific question (or gives you a prompt), and you walk the interviewer through a detailed answer.
• Employer-led: The interviewer leads you through a series of specific (and predetermined) prompts and questions, no matter your answers.
• Presentation: You’re given a problem in advance to create and present a detailed case study.
• Video: Similar to a presentation case study interview, you’ll create a video presentation of the case study.

Most companies will tell you in advance which style of case study interview you should prepare for. But if they don’t, reach out to your recruiter or check the company’s website. Many include the essential details you need to prepare for the case study interview.

Seek Out Company-Specific Tips

Speaking of companies and their websites, not only do many companies that use case study interviews tell you the format, they often include helpful tips and tricks to help candidates prepare. This includes what to expect, what the company is looking for skill-wise, and what kinds of responses they want. They may even have a few practice questions and videos you can use to help you prep.

Unlike other common interview questions , it’s not as easy to prepare an answer to case study interview questions. Even though you know it’s a case study interview, you don’t necessarily know the specifics of the case or what problems you’ll be asked to solve.

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That said, it’s likely your case study interview questions will cover one or several of these concepts:

• Entering new markets
• Increasing profits
• Cutting costs
• Turnarounds
• Mergers and acquisitions
• Pricing strategy
• Developing new products
• Industry analysis
• Competitive response

While there are many ways to answer case study interview questions, a few basic prep tips can help you get ready for every question.

In addition to what you usually bring to a job interview , make sure you bring a notepad and pen or pencil to a case study interview. Taking notes will help you better understand the questions and formulate your answers. It also gives you a place to calculate numbers and figures if you need to. Not every case study interview allows calculators, so you’ll need to be ready to do your calculations manually.

Ask Specific Questions

As you’re working through the case study, you can and should ask any clarifying questions you need. The interviewer wants to hear specific, detailed answers that solve the problem. So, whenever you’re unclear, ask a follow-up question to not only get what you need but to give the interviewer what they need. 

That said, your question(s) should be very specific. You need to verify exactly what the interview is asking so you can create an appropriate answer. Say the interviewer gives you a broad question: The client’s revenue is falling. How do you help them increase it? You can follow up with a very specific question or two to make sure you understand what the interviewer is asking:

You’re asking how I would help the client raise revenue, correct? Are you also asking how I would help them increase their profit and cut costs?

>>Related: 5 Top Questions to Ask in an Interview (and Why You Should Ask Them)

Talk Them Through It

A big part of the case study interview is seeing you in action. However, in this case, “see” really means “how you think.” Since the interviewer can’t hear your inner monologue, you’ll need to practice thinking out loud.

While the interviewer wants to hear your solution, they also want to hear how you got there. That means talking through your entire thought process. Instead of saying, “I’d do X,” you have to explain how you arrived at your decision while you’re getting there.

Because not everyone thinks out loud, it may feel unnatural to you, and you likely won’t be expected to do it on the job. But it’s crucial to practice this skill — and it is a skill — because the interviewer is expecting you to do it in a case study interview.

Want to give a case study a shot? Try out a Forage consulting virtual simulation program and gain the skills you’ll need to ace a case study interview.

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100 Best Case Study Questions for Your Next Customer Spotlight

Published: November 29, 2022

Case studies and testimonials are helpful to have in your arsenal. But to build an effective library, you need to ask the right case study questions. You also need to know how to write a case study .

Case studies are customers' stories that your sales team can use to share relevant content with prospects . Not only that, but case studies help you earn a prospect's trust, show them what life would be like as your customer, and validate that your product or service works for your clients.

Before you start building your library of case studies, check out our list of 100 case study questions to ask your clients. With this helpful guide, you'll have the know-how to build your narrative using the " Problem-Agitate-Solve " Method.

What makes a good case study questionnaire?

The ultimate list of case study questions, how to ask your customer for a case study, creating an effective case study.

Certain key elements make up a good case study questionnaire.

A questionnaire should never feel like an interrogation. Instead, aim to structure your case study questions like a conversation. Some of the essential things that your questionnaire should cover include:

• The problem faced by the client before choosing your organization.
• Why they chose your company.
• How your product solved the problem clients faced.
• The measurable results of the service provided.
• Data and metrics that prove the success of your service or product, if possible.

You can adapt these considerations based on how your customers use your product and the specific answers or quotes that you want to receive.

What makes a good case study question?

A good case study question delivers a powerful message to leads in the decision stage of your prospective buyer's journey.

Since your client has agreed to participate in a case study, they're likely enthusiastic about the service you provide. Thus, a good case study question hands the reins over to the client and opens a conversation.

Try asking open-ended questions to encourage your client to talk about the excellent service or product you provide.

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Categories for the Best Case Study Questions

• Case study questions about the customer's business
• Case study questions about the environment before the purchase
• Case study questions about the decision process
• Case study questions about the customer's business case
• Case study questions about the buying team and internal advocates
• Case study questions about customer success
• Case study questions about product feedback
• Case study questions about willingness to make referrals
• Case study question to prompt quote-worthy feedback
• Case study questions about the customers' future goals

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Case Study Interview Questions About the Customer's Business

Knowing the customer's business is an excellent way of setting the tone for a case study.

Use these questions to get some background information about the company and its business goals. This information can be used to introduce the business at the beginning of the case study — plus, future prospects might resonate with their stories and become leads for you.

• Would you give me a quick overview of [company]? This is an opportunity for the client to describe their business in their own words. You'll get useful background information and it's an easy prompt to get the client talking.
• Can you describe your role? This will give you a better idea of the responsibilities they are subject to.
• How do your role and team fit into the company and its goals? Knowing how the team functions to achieve company goals will help you formulate how your solution involves all stakeholders.
• How long has your company been in business? Getting this information will help the reader gauge if pain points are specific to a startup or new company vs. a veteran company.
• How many employees do you have? Another great descriptor for readers to have. They can compare the featured company size with their own.
• Is your company revenue available? If so, what is it? This will give your readers background information on the featured company's gross sales.
• Who is your target customer? Knowing who the target audience is will help you provide a better overview of their market for your case study readers.
• How does our product help your team or company achieve its objectives? This is one of the most important questions because it is the basis of the case study. Get specifics on how your product provided a solution for your client. You want to be able to say "X company implemented our solution and achieved Y. "
• How are our companies aligned (mission, strategy, culture, etc.)? If any attributes of your company's mission or culture appealed to the client, call it out.

How many people are on your team? What are their roles? This will help describe key players within the organization and their impact on the implementation of your solution.

Case Study Interview Questions About the Environment Before the Purchase

A good case study is designed to build trust. Ask clients to describe the tools and processes they used before your product or service. These kinds of case study questions will highlight the business' need they had to fulfill and appeal to future clients.

• What was your team's process prior to using our product? This will give the reader a baseline to compare the results for your company's product.
• Were there any costs associated with the process prior to using our product? Was it more expensive? Was it worth the cost? How did the product affect the client's bottom line? This will be a useful metric to disclose if your company saved the client money or was more cost-efficient.
• What were the major pain points of your process prior to using our product? Describe these obstacles in detail. You want the reader to get as much information on the problem as possible as it sets up the reasoning for why your company's solution was implemented.
• Did our product replace a similar tool or is this the first time your team is using a product like this? Were they using a similar product? If so, having this information may give readers a reason to choose your brand over the competition.
• What other challenges were you and your team experiencing prior to using our product? The more details you can give readers regarding the client's struggles, the better. You want to paint a full picture of the challenges the client faced and how your company resolved them.
• Were there any concerns about how your customers would be impacted by using our product? Getting answers to this question will illustrate to readers the client's concerns about switching to your service. Your readers may have similar concerns and reading how your client worked through this process will be helpful.
• Why didn't you buy our product or a similar product earlier? Have the client describe any hesitations they had using your product. Their concerns may be relatable to potential leads.
• Were there any "dealbreakers" involved in your decision to become a customer? Describing how your company was able to provide a solution that worked within those parameters demonstrates how accommodating your brand is and how you put the customer first. It's also great to illustrate any unique challenges the client had. This better explains their situation to the reader.
• Did you have to make any changes you weren't anticipating once you became a customer? Readers of your case study can learn how switching to your product came with some unexpected changes (good or bad) and how they navigated them. If you helped your client with troubleshooting, ask them to explain that here.

How has your perception of the product changed since you've become a customer? Get the interviewee to describe how your product changed how they do business. This includes how your product accomplished what they previously thought was impossible.

Case Study Interview Questions About the Decision Process

Readers of the case study will be interested in which factors influenced the decision-making process for the client. If they can relate to that process, there's a bigger chance they'll buy your product.

The answers to these questions will help potential customers through their decision-making process.

• How did you hear about our product? If the client chose to work with you based on a recommendation or another positive case study, include that. It will demonstrate that you are a trusted brand with an established reputation for delivering results.
• How long had you been looking for a solution to this problem? This will add to the reader's understanding of how these particular challenges impacted the company before choosing your product.
• Were you comparing alternative solutions? Which ones? This will demonstrate to readers that the client explored other options before choosing your company.
• Would you describe a few of the reasons you decided to buy our product? Ask the interviewee to describe why they chose your product over the competition and any benefits your company offered that made you stand out.
• What were the criteria you used when deciding to buy our product? This will give readers more background insight into the factors that impacted their decision-making process.
• Were there any high-level initiatives or goals that prompted the decision to buy? For example, was this decision motivated by a company-wide vision? Prompt your clients to discuss what lead to the decision to work with you and how you're the obvious choice.
• What was the buying process like? Did you notice anything exceptional or any points of friction? This is an opportunity for the client to comment on how seamless and easy you make the buying process. Get them to describe what went well from start to finish.
• How would you have changed the buying process, if at all? This is an opportunity for you to fine-tune your process to accommodate future buyers.
• Who on your team was involved in the buying process? This will give readers more background on the key players involved from executives to project managers. With this information, readers can see who they may potentially need to involve in the decision-making process on their teams.

Case Study Interview Questions About the Customer's Business Case

Your case study questions should ask about your product or solution's impact on the customer's employees, teams, metrics, and goals. These questions allow the client to praise the value of your service and tell others exactly what benefits they derived from it.

When readers review your product or service's impact on the client, it enforces the belief that the case study is credible.

• How long have you been using our product? This will help readers gauge how long it took to see results and your overall satisfaction with the product or service.
• How many different people at your company use our product? This will help readers gauge how they can adapt the product to their teams if similar in size.
• Are there multiple departments or teams using our product? This will demonstrate how great of an impact your product has made across departments.
• How do you and your team currently use the product? What types of goals or tasks are you using the product to accomplish? Get specifics on how the product actively helps the client achieve their goals.
• If other teams or departments are using our product, do you know how they're using it? With this information, leads can picture how they can use your product across their teams and how it may improve their workflow and metrics.
• What was the most obvious advantage you felt our product offered during the sales process? The interviewee should explain the benefits they've gained from using your product or service. This is important for convincing other leads you are better than the competition.
• Were there any other advantages you discovered after using the product more regularly? Your interviewee may have experienced some additional benefits from using your product. Have them describe in detail what these advantages are and how they've helped the company improve.
• Are there any metrics or KPIs you track with our product? What are they? The more numbers and data the client can provide, the better.
• Were you tracking any metrics prior to using our product? What were they? This will allow readers to get a clear, before-and-after comparison of using your product.
• How has our product impacted your core metrics? This is an opportunity for your clients to drive home how your product assisted them in hitting their metrics and goals.

Case Study Interview Questions About the Buying Team and Internal Advocates

See if there are any individuals at the customer's company who are advocates for your product.

• Are there any additional team members you consider to be advocates for our product? For example, does anyone stick out as a "power user" or product expert on your team? You may want to interview and include these power users in your case study as well. Consider asking them for tips on using your service or product.
• Is there anyone else on your team you think we should talk to? Again, the more people can share their experience using your product, the better.
• Are there any team members who you think might not be the biggest fans of our product or who might need more training? Providing extra support to those struggling with your product may improve their user experience and turn into an opportunity to not only learn about their obstacles but turn them into a product fan
• Would you share some details about how your team implemented our product? Get as much information as possible about the rollout. Hopefully, they'll gush about how seamless the process was.
• Who from your company was involved in implementing our product? This will give readers more insight into who needs to be involved for a successful rollout of their own.
• Were there any internal risks or additional costs involved with implementing our product? If so, how did you address them? This will give insight into the client's process and rollout and this case study question will likely provide tips on what potential leads should be on the lookout for.
• Is there a training process in place for your team's use of our product? If so, what does it look like? If your company provided support and training to the client, have them describe that experience.
• About how long does it take a new team member to get up to speed with our product? This will help leads determine how much time it will take to onboard an employee to your using your product. If a new user can quickly get started seamlessly, it bodes well for you.
• What was your main concern about rolling this product out to your company? Describing their challenges in detail will provide readers with useful insight.

Case Study Interview Questions About Customer Success

Has the customer found success with your product? Ask these questions to learn more.

• By using our product can you measure any reduced costs? If it has, you'll want to emphasize those savings in your case study.
• By using our product can you measure any improvements in productivity or time savings? Any metrics or specific stories your interviewee can provide will help demonstrate the value of your product.
• By using our product can you measure any increases in revenue or growth? Again, say it with numbers and data whenever possible.
• Are you likely to recommend our product to a friend or colleague? Recommendations from existing customers are some of the best marketing you can get.
• How has our product impacted your success? Your team's success? Getting the interviewee to describe how your product played an integral role in solving their challenges will show leads that they can also have success using your product.
• In the beginning, you had XYZ concerns; how do you feel about them now? Let them explain how working with your company eliminated those concerns.
• I noticed your team is currently doing XYZ with our product. Tell me more about how that helps your business. Illustrate to your readers how current customers are using your product to solve additional challenges. It will convey how versatile your product is.
• Have you thought about using our product for a new use case with your team or at your company? The more examples of use cases the client can provide, the better.
• How do you measure the value our product provides? Have the interviewee illustrate what metrics they use to gauge the product's success and how. Data is helpful, but you should go beyond the numbers. Maybe your product improved company morale and how teams work together.

Case Study Interview Questions About Product Feedback

Ask the customer if they'd recommend your product to others. A strong recommendation will help potential clients be more open to purchasing your product.

• How do other companies in this industry solve the problems you had before you purchased our product? This will give you insight into how other companies may be functioning without your product and how you can assist them.
• Have you ever talked about our product to any of your clients or peers? What did you say? This can provide you with more leads and a chance to get a referral.
• Why would you recommend our product to a friend or client? Be sure they pinpoint which features they would highlight in a recommendation.
• Can you think of any use cases your customers might have for our product? Similar industries may have similar issues that need solutions. Your interviewee may be able to provide a use case you haven't come up with.
• What is your advice for other teams or companies who are tackling problems similar to those you had before you purchased our product? This is another opportunity for your client to talk up your product or service.
• Do you know someone in X industry who has similar problems to the ones you had prior to using our product? The client can make an introduction so you can interview them about their experience as well.
• I noticed you work with Company Y. Do you know if they are having any pain points with these processes? This will help you learn how your product has impacted your client's customers and gain insight into what can be improved.
• Does your company participate in any partner or referral programs? Having a strong referral program will help you increase leads and improve customer retention.
• Can I send you a referral kit as a thank-you for making a referral and give you the tools to refer someone to us? This is a great strategy to request a referral while rewarding your existing customers.
• Are you interested in working with us to produce additional marketing content? The more opportunities you can showcase happy customers, the better.

Case Study Interview Questions About Willingness to Make Referrals

• How likely are you to recommend our product to a friend or client? Ideally, they would definitely refer your product to someone they know.
• Can you think of any use cases your customers might have for our product? Again, your interviewee is a great source for more leads. Similar industries may have similar issues that need solutions. They may be able to provide a use case you haven't come up with.
• I noticed you work with Company Y; do you know if they are having any pain points with these processes? This will help you learn how your product has impacted your client's customers and gain insight into what can be improved.

Case Study Interview Questions to Prompt Quote-Worthy Feedback

Enhance your case study with quotable soundbites from the customer. By asking these questions, prospects have more insight into other clients and their success with your product — which helps build trust.

• How would you describe your process in one sentence prior to using our product? Ideally, this sentence would quickly and descriptively sum up the most prominent pain point or challenge with the previous process.
• What is your advice to others who might be considering our product? Readers can learn from your customer's experience.
• What would your team's workflow or process be like without our product? This will drive home the value your product provides and how essential it is to their business.
• Do you think the investment in our product was worthwhile? Why? Have your customer make the case for the value you provide.
• What would you say if we told you our product would soon be unavailable? What would this mean to you? Again, this illustrates how integral your product is to their business.
• How would you describe our product if you were explaining it to a friend? Your customers can often distill the value of your product to their friends better than you can.
• What do you love about your job? Your company? This gives the reader more background on your customer and their industry.
• What was the worst part of your process before you started using our product? Ideally, they'd reiterate how your product helped solve this challenge.
• What do you love about our product? Another great way to get the customer's opinion about what makes your product worth it.
• Why do you do business with us? Hopefully, your interviewee will share how wonderful your business relationship is.

Case Study Interview Questions About the Customers' Future Goals

Ask the customer about their goals, challenges, and plans for the future. This will provide insight into how a business can grow with your product.

• What are the biggest challenges on the horizon for your industry? Chances are potential leads within the same industry will have similar challenges.
• What are your goals for the next three months? Knowing their short-term goals will enable your company to get some quick wins for the client.
• How would you like to use our product to meet those challenges and goals? This will help potential leads understand that your product can help their business as they scale and grow.
• Is there anything we can do to help you and your team meet your goals? If you haven't covered it already, this will allow your interviewee to express how you can better assist them.
• Do you think you will buy more, less, or about the same amount of our product next year? This can help you gauge how your product is used and why.
• What are the growth plans for your company this year? Your team? This will help you gain insight into how your product can help them achieve future goals.
• How can we help you meet your long-term goals? Getting specifics on the needs of your clients will help you create a unique solution designed for their needs.
• What is the long-term impact of using our product? Get their feedback on how your product has created a lasting impact.
• Are there any initiatives that you personally would like to achieve that our product or team can help with? Again, you want to continue to provide products that help your customers excel.
• What will you need from us in the future? This will help you anticipate the customer's business needs.
• Is there anything we can do to improve our product or process for working together in the future? The more feedback you can get about what is and isn't working, the better.

Before you can start putting together your case study, you need to ask your customer's permission.

If you have a customer who's seen success with your product, reach out to them. Use this template to get started:

Thank you & quick request

Hi [customer name],

Thanks again for your business — working with you to [solve X, launch Y, take advantage of Z opportunity] has been extremely rewarding, and I'm looking forward to more collaboration in the future.

[Name of your company] is building a library of case studies to include on our site. We're looking for successful companies using [product] to solve interesting challenges, and your team immediately came to mind. Are you open to [customer company name] being featured?

It should be a lightweight process — [I, a product marketer] will ask you roughly [10, 15, 20] questions via email or phone about your experience and results. This case study will include a blurb about your company and a link to your homepage (which hopefully will make your SEO team happy!)

In any case, thank you again for the chance to work with you, and I hope you have a great week.

[Your name]

If one of your customers has recently passed along some praise (to you, their account manager, your boss; on an online forum; to another potential customer; etc.), then send them a version of this email:

Hey [customer name],

Thanks for the great feedback — I'm really glad to hear [product] is working well for you and that [customer company name] is getting the results you're looking for.

My team is actually in the process of building out our library of case studies, and I'd love to include your story. Happy to provide more details if you're potentially interested.

Either way, thank you again, and I look forward to getting more updates on your progress.

You can also find potential case study customers by usage or product data. For instance, maybe you see a company you sold to 10 months ago just bought eight more seats or upgraded to a new tier. Clearly, they're happy with the solution. Try this template:

I saw you just [invested in our X product; added Y more users; achieved Z product milestone]. Congratulations! I'd love to share your story using [product] with the world -- I think it's a great example of how our product + a dedicated team and a good strategy can achieve awesome results.

Are you open to being featured? If so, I'll send along more details.

Case Study Benefits

• Case studies are a form of customer advocacy.
• Case studies provide a joint-promotion opportunity.
• Case studies are easily sharable.
• Case studies build rapport with your customers.
• Case studies are less opinionated than customer reviews.

1. Case studies are a form of customer advocacy.

If you haven't noticed, customers aren't always quick to trust a brand's advertisements and sales strategies.

With every other brand claiming to be the best in the business, it's hard to sort exaggeration from reality.

This is the most important reason why case studies are effective. They are testimonials from your customers of your service. If someone is considering your business, a case study is a much more convincing piece of marketing or sales material than traditional advertising.

2. Case studies provide a joint-promotion opportunity.

Your business isn't the only one that benefits from a case study. Customers participating in case studies benefit, too.

Think about it. Case studies are free advertisements for your customers, not to mention the SEO factor, too. While they're not promoting their products or services, they're still getting the word out about their business. And, the case study highlights how successful their business is — showing interested leads that they're on the up and up.

3. Case studies are easily sharable.

No matter your role on the sales team, case studies are great to have on hand. You can easily share them with leads, prospects, and clients.

Whether you embed them on your website or save them as a PDF, you can simply send a link to share your case study with others. They can share that link with their peers and colleagues, and so on.

Case studies can also be useful during a sales pitch. In sales, timing is everything. If a customer is explaining a problem that was solved and discussed in your case study, you can quickly find the document and share it with them.

4. Case studies build rapport with your customers.

While case studies are very useful, they do require some back and forth with your customers to obtain the exact feedback you're looking for.

Even though time is involved, the good news is this builds rapport with your most loyal customers. You get to know them on a personal level, and they'll become more than just your most valuable clients.

And, the better the rapport you have with them, the more likely they'll be to recommend your business, products, or services to others.

5. Case studies are less opinionated than customer reviews.

Data is the difference between a case study and a review. Customer reviews are typically based on the customer's opinion of your brand. While they might write a glowing review, it's completely subjective and there's rarely empirical evidence supporting their claim.

Case studies, on the other hand, are more data-driven. While they'll still talk about how great your brand is, they support this claim with quantitative data that's relevant to the reader. It's hard to argue with data.

An effective case study must be genuine and credible. Your case study should explain why certain customers are the right fit for your business and how your company can help meet their specific needs. That way, someone in a similar situation can use your case study as a testimonial for why they should choose your business.

Use the case study questions above to create an ideal customer case study questionnaire. By asking your customers the right questions, you can obtain valuable feedback that can be shared with potential leads and convert them into loyal customers.

Editor’s Note: This article was originally published in June 2021 and has been updated for comprehensiveness.

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What are the most common case study interview questions at McKinsey, BCG and Bain?

If you’re preparing to interview at a top management consulting firm like McKinsey, BCG or Bain (MBB), you might be wondering what kind of questions you can expect to receive in your case interviews .

In this article we take a look at the most common types of case questions asked by interviewers at the world’s top-3 consulting firms. We also consider how you can develop the skill of structuring answers to case questions.

The 10 most common case interview questions

To identify the most common case interview questions posed by interviewers at McKinsey, BCG and Bain, we surveyed CaseCoach users who interviewed at one of the firms for a generalist role in 2023. We found that 90% of the 260+ case interviews reported by respondents fell into one of 10 question types:

The respondents in our study all interviewed for generalist consulting positions at McKinsey, BCG and Bain. It’s no coincidence that the case interview questions that they were asked align to the typical challenges and opportunities faced by CEOs.

However, it’s important to bear in mind that this is not an exhaustive list. If you’re interviewing for a practice-focused role on the firms’ expert career track you may be given cases that focus on your area of specialization, rather than the topics in our list.

Your target firm and location may also have a bearing on the type of cases you are given. This is because MBB offices tend to use the work they have done for clients to develop their case questions for candidates.

Knowing the frameworks that correspond to these questions is critical

As a management consulting candidate, it’s vital that you have an understanding of the issues behind the most common case questions and know the frameworks for tackling them inside out.

In our Interview Prep Course, we provide detailed examples of how to structure these questions at the beginning of a case interview. We also explain how different circumstances should influence your approach.

You can learn more about structuring frameworks for specific types of cases in our articles on mastering profitability questions , answering revenue growth questions and nailing market sizing question s.

You can also find examples of the following types of cases in our Case Library :

• Profit improvement
• Market entry
• Mergers and acquisitions
• Response to a competitive threat

If you’re not a CaseCoach subscriber, you can gain access to these examples by signing up for a free account.

You must be able to create custom approaches to answering case study interview questions

When it comes to answering a case question effectively, applying a framework in a ‘cookie-cutter’ fashion simply won’t allow you to give the best possible answer or impress your interviewer with your structuring skills.

In fact, respondents in our survey reported that many of the cases they received could be assigned to several case types and could not be solved by applying an off-the-shelf framework. A profitability question may have a focus on market growth or launching a product, for example. To structure a response to this kind of question, candidates need to combine several frameworks and use them as building blocks for creating their answer.

Even common questions require a custom approach: a profitability question that relates to a chain of restaurants, for example, will naturally require a different approach to a question on the same topic in the manufacturing industry.

Interviewers want to understand how your mind works and to see you think on your feet. Increasingly, they are using non-traditional cases (such as those set in the public sector) to test this. Ten percent of the respondents in our survey couldn’t assign the questions they had faced to a particular case type, suggesting that they were given an unusual problem to solve.

As a candidate, you’ll need to demonstrate that you are capable of proposing a custom structure to any case question, rather than simply relying on a framework.

What does a good custom structure look like?

An effective structure should focus on the right question and then break it down into an exhaustive set of independent drivers. The structure should also provide an approach to solving the case and supply helpful insights. In other words, it should pass ‘the AIM test’:

• Answer-focused: a strong case structure will be focused on the right question and will provide an approach to solving the case.
• Insightful: the structure should be tailored to the specific situation posed by the case question and should provide helpful insights.
• MECE: this stands for ‘mutually exclusive and collectively exhaustive’. A good MECE structure will break the question down into an exhaustive set of independent drivers that neither overlap nor omit anything important.

You should use the AIM test as a guide for structuring your answers to case questions. If your structure meets all the criteria, it should provide a strong foundation upon which to solve the case. You can learn more in our article on case structuring and how to do it effectively .

Structuring skills take time and practice to develop

Building the muscle required to structure answers to a wide range of case questions, combine frameworks and develop your own approach to solving non-traditional cases takes a great deal of preparation.

First, you need to build an inventory of frameworks that you can use as building blocks to develop custom structures. You can do this by watching the structuring lectures in our Interview Prep Course , which covers topics such as the AIM test, business and academic frameworks, and using logical approaches to craft bespoke structures for unusual cases.

You then need to gain exposure to a variety of cases. You can choose from the 100+ questions in our Case Library and then schedule a practice session with a partner from our diverse community of top candidates in our Practice Room .

Structuring is one of the case interview skills you can practice alone in addition to practicing with a partner. Our Interview Prep Course includes 60+ structuring drills – which provide multiple solutions to each problem – to help you do this.

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Hacking the Case Interview

We’ve compiled 50 case interview examples and organized them by industry, function, and consulting firm to give you the best, free case interview practice. Use these case interview examples for practice as you prepare for your consulting interviews.

If you’re looking for a step-by-step shortcut to learn case interviews quickly, enroll in our case interview course . These insider strategies from a former Bain interviewer helped 30,000+ land consulting offers while saving hundreds of hours of prep time.

Case Interview Examples Organized by Industry

Below, we’ve linked all of the case interview examples we could find from consulting firm websites and YouTube videos and organized them by industry. This will be helpful for your case interview practice if there is a specific consulting industry role that you are interviewing for that you need more practice in.

Aerospace, Defense, & Government Case Interview Examples

• Agency V (Deloitte)
• The Agency (Deloitte)
• Federal Finance Agency (Deloitte)
• Federal Civil Cargo Protection Bureau (Deloitte)

Consumer Products & Retail Case Interview Examples

• Electro-light (McKinsey)
• Beautify (McKinsey)
• Shops Corporation (McKinsey)
• Climate Case (BCG)
• Foods Inc. (BCG) *scroll to bottom of page
• Chateau Boomerang (BCG) *written case interview
• PrintCo (Bain)
• Coffee Co. (Bain)
• Fashion Co. (Bain)
• Recreation Unlimited (Deloitte)
• Footlose (Deloitte)
• National Grocery and Drug Store (Kearney)
• Whisky Co. (OC&C)
• Dry Cleaners (Accenture) *scroll to page 15
• UK Grocery Retail (Strategy&) *scroll to page 24
• Ice Cream Co. (Capital One)

Healthcare & Life Sciences Case Interview Examples

• GlobaPharm (McKinsey)
• GenCo (BCG) *scroll to middle of page
• PrevenT (BCG)
• MedX (Deloitte)
• Medical Consumables (LEK)
• Medicine Company (HackingTheCaseInterview)
• Pharma Company (Indian Institute of Management)

Manufacturing & Production Case Interview Examples

• Aqualine (Oliver Wyman)
• 3D Printed Hip Implants (Roland Berger)
• Talbot Trucks (McKinsey)
• Playworks (Yale School of Management)

Social & Non-Profit Case Interview Examples

• Diconsa (McKinsey)
• National Education (McKinsey)
• Conservation Forever (McKinsey)
• Federal Health Agency (Deloitte)
• Robinson Philanthropy (Bridgespan)
• Home Nurses for New Families (Bridgespan)
• Reach for the Stars (Bridgespan)
• Venture Philanthropy (Bridgespan)

Technology, Media, & Telecom Case Interview Examples

• NextGen Tech (Bain)
• Smart Phone Introduction (Simon-Kucher)
• MicroTechnos (HackingTheCaseInterview)

Transportation Case Interview Examples

• Low Cost Carrier Airline (BCG)
• Transit Oriented Development (Roland Berger)
• Northeast Airlines (HackingTheCaseInterview)
• A+ Airline Co. (Yale School of Management)
• Ryder (HackingTheCaseInterview)

Travel & Entertainment Case Interview Examples

• Wumbleworld (Oliver Wyman)
• Theater Co. (LEK)
• Hotel and Casino Co. (OC&C)

Case Interview Examples Organized by Function

Below, we’ve taken the same cases listed in the “Case Interview Examples Organized by Industry” section and organized them by function instead. This will be helpful for your case interview practice if there is a specific type of case interview that you need more practice with.

Profitability Case Interview Examples

To learn how to solve profitability case interviews, check out our video below:

Market Entry Case Interview Examples

Merger & acquisition case interview examples.

Growth Strategy Case Interview Examples

Pricing case interview examples.

New Product Launch Case Interview Examples

Market sizing case interview examples.

To learn how to solve market sizing case interviews, check out our video below:

Operations Case Interview Examples

Other case interview examples.

These are cases that don’t quite fit into any of the above categories. These cases are the more unusual, atypical, and nontraditional cases out there.

Case Interview Examples Organized by Consulting Firm

Below, we’ve taken the same cases listed previously and organized them by company instead. This will be helpful for your case interview practice if there is a specific company that you are interviewing with.

McKinsey Case Interview Examples

BCG Case Interview Examples

Bain Case Interview Examples

Deloitte Case Interview Examples

Lek case interview examples, kearney case interview examples, oliver wyman case interview examples, roland berger case interview examples, oc&c case interview  examples, bridgespan case interview examples, strategy& case interview examples, accenture case interview examples, simon kutcher case interview examples, capital one case interview examples, case interview examples from mba casebooks.

For more case interview examples, check out our article on 23 MBA consulting casebooks with 700+ free practice cases . There additional cases created by MBA consulting clubs that make for great case interview practice. For your convenience, we’ve listed some of the best MBA consulting casebooks below:

• Australian Graduate School of Management (2002)
• Booth (2005)
• Columbia (2007)
• Darden (2019)
• ESADE (2011)
• Fuqua (2018)
• Goizueta (2006)
• Haas (2019)
• Harvard Business School (2012)
• Illinois (2015)
• INSEAD (2011)
• Johnson (2003)
• Kellogg (2012)
• London Business School (2013)
• McCombs (2018)
• Notre Dame (2017)
• Queens (2019)
• Ross (2010)
• Sloan (2015)
• Stern (2018)
• Tuck (2009)
• Wharton (2017)
• Yale (2013)

Consulting casebooks are documents that MBA consulting clubs put together to help their members prepare for consulting case interviews. Consulting casebooks provide some case interview strategies and tips, but they mostly contain case interview practice cases.

While consulting casebooks contain tons of practice cases, there is quite a bit of variety in the sources and formats of these cases.

Some practice cases are taken from actual consulting interviews given by consulting firms. These are the best types of cases to practice with because they closely simulate the length and difficulty of an actual case interview. Other practice cases may be written by the consulting club’s officers. These cases are less realistic, but can still offer great practice.

The formats of the practice cases in consulting casebooks also vary significantly.

Some practice cases are written in a question and answer format. This type of format makes it easy to practice the case by yourself, without a case partner. Other practices cases are written in a dialogue format. These cases are better for practicing with a case interview partner.

MBA consulting casebooks can be a great resource because they are free and provide tons of practice cases to hone your case interview skills. However, there are several caveats that you should be aware of.

• Similarity to real case interviews : Some cases in MBA consulting casebooks are not representative of actual case interviews because they are written by consulting club officers instead of interviewers from consulting firms
• Quality of sample answers : While consulting casebooks provide sample solutions, these answers are often not the best or highest quality answers
• Ease of use : Consulting casebooks are all written in different formats and by different people. Therefore, it can be challenging to find cases that you can consistently use to practice cases by yourself or with a partner

Therefore, we recommend that you first use the case interview examples listed in this article and wait until you’ve exhausted all of them before using MBA consulting casebooks.

Case Interview Examples from HackingTheCaseInterview

Below, we've pulled together several of our very own case interview examples. You can use these case interview examples for your case interview practice.

1. Tech retailer profitability case interview

2. Airline profitability case interview

3. Ride sharing app market entry

4. Increasing Drug Adoption

How to Use Case Interview Examples to Practice Case Interviews

To get the most out of these case interview examples and maximize your time spent on case interview practice, follow these three steps.

1. Understand the case interview structure beforehand

If case interviews are something new to you, we recommend watching the following video to learn the basics of case interviews in under 30 minutes.

Know that there are seven major steps of a case interview.

• Understanding the case background : Take note while the interviewer gives you the case background information. Afterwards, provide a concise synthesis to confirm your understanding of the situation and objective
• Asking clarifying questions : Ask questions to better understand the case background and objective
• Structuring a framework : Lay out a framework of what areas you want to look into in order to answer or solve the case
• Kicking off the case : Propose an area of your framework that you would like to dive deeper into 
• Solving quantitative problems : Solve a variety of different quantitative problems, such as market sizing questions and profitability questions. You may also be given charts and graphs to analyze or interpret
• Answering qualitative questions : You may be asked to brainstorm ideas or be asked to give your business opinion on a particular issue or topic
• Delivering a recommendation : Summarize the key takeaways from the case to deliver a firm and concise recommendation

2. Learn how to practice case interviews by yourself 

There are 6 steps to practice case interviews by yourself. The goal of these steps is to simulate a real case interview as closely as you can so that you practice the same skills and techniques that you are going to use in a real case interview.

• Synthesize the case background information out loud : Start the practice case interview by reading the case background information. Then, just as you would do in a live case interview, summarize the case background information out loud
• Ask clarifying questions out loud : Just as you would do in a live case interview, ask clarifying questions out loud. Although you do not have a case partner that can answer your questions, it is important to practice identifying the critical questions that need to be asked to fully understand the case
• Structure a framework and present it out loud : Pretend that you are in an actual interview in which you’ll only have a few minutes to put together a comprehensive and coherent framework. Replicate the stress that you will feel in an interview when you are practicing case interviews on your own by giving yourself time pressure.

When you have finished creating your framework, turn your paper around to face an imaginary interviewer and walk through the framework out loud. You will need to get good at presenting your framework concisely and in an easy to understand way.

• Propose an area to start the case : Propose an area of your framework to start the case. Make sure to say out loud the reasons why you want to start with that particular area
• Answer each case question out loud : If the question is a quantitative problem, create a structure and walk the interviewer through how you would solve the problem. When doing math, do your calculations out loud and explain the steps that you are taking.

If the question is qualitative, structure your thinking and then brainstorm your ideas out loud. Walk the interviewer through your ideas and opinions.

• Deliver a recommendation out loud : Just as you would do in a real case interview, ask for a brief moment to collect your thoughts and review your notes. Once you have decided on a recommendation, present your recommendation to the interviewer.

3. Follow best practices while practicing case interviews :    

You’ll most likely be watching, reading, or working through these case interview examples by yourself. To get the most practice and learnings out of each case interview example, follow these tips: 

• Don’t have notes or a calculator out when you are practicing since you won’t have these in your actual interview
• Don’t take breaks in the middle of a mock case interview
• Don’t read the case answer until you completely finish answering each question
• Talk through everything out loud as if there were an interviewer in the room
• Occasionally record yourself to understand what you look like and sound like when you speak

4. Identify improvement areas to work on

When the case is completed, review your framework and answers and compare them to the model answers that the case provides. Reflect on how you could have made your framework or answers stronger.

Also, take the time to reflect on what parts of the case you could have done better. Could your case synthesis be more concise? Was your framework mutually exclusive and collectively exhaustive? Could your math calculations be done more smoothly? Was your recommendation structured enough?

This is the most important part of practicing case interviews by yourself. Since you have no partner to provide you feedback, you will need to be introspective and identify your own improvement areas.

At the end of each practice case interview, you should have a list of new things that you have learned and a list of improvement areas to work on in future practice cases. You’ll continue to work on your improvement areas in future practice cases either by yourself or with a partner.

5. Eventually find a case partner to practice with

You can only do so many practice case interviews by yourself before your learning will start to plateau. Eventually, you should be practicing case interviews with a case partner.

Practicing with a case partner is the best way to simulate a real case interview. There are many aspects of case interviews that you won’t be able to improve on unless you practice live with a partner:

• Driving the direction of the case
• Asking for more information
• Collaborating to get the right approach or structure
• Answering follow-up questions

If you are practicing with a case partner, decide who is going to be giving the case and who is going to be receiving the case.

If you are giving the case, read the entire case information carefully. It may be helpful to read through everything twice so that you are familiar with all of the information and can answer any question that your partner asks you to clarify.

As the person giving the case, you need to be the case expert.

You should become familiar with the overall direction of the case. In other words, you should know what the major questions of the case are and what the major areas of investigation are. This will help you run the mock case interview more smoothly.  

Depending on whether you want the case interview to be interviewer-led or candidate-led, you will need to decide how much you want to steer the direction of the case.

If your partner gets stuck and is taking a long time, you may need to step in and provide suggestions or hints. If your partner is proceeding down a wrong direction, you will need to direct them towards the right direction.

Where to Find More Case Interview Examples

To find more case interview examples, you can use a variety of different case interview prep books, online courses, and coaching. We'll cover each of these different categories of resources for more case interview practice in more detail.

Case Interview Prep Books

Case interview prep books are great resources to use because they are fairly inexpensive, only costing $20 to $30. They contain a tremendous amount of information that you can read, digest, and re-read at your own pace.

Based on our comprehensive review of the 12 popular case interview prep books , we ranked nearly all of the case prep books in the market.

The three case interview prep books we recommend using are:

• Hacking the Case Interview : In this book, learn exactly what to do and what to say in every step of the case interview. This is the perfect book for beginners that are looking to learn the basics of case interviews quickly.
• The Ultimate Case Interview Workbook : In this book, hone your case interview skills through 65+ problems tailored towards each type of question asked in case interviews and 15 full-length practice cases. This book is great for intermediates looking to get quality practice.
• Case Interview Secrets : This book provides great explanations of essential case interview concepts and fundamentals. The stories and anecdotes that the author provides are entertaining and help paint a clear picture of what to expect in a case interview, what interviewers are looking for, and how to solve a case interview.

Case Interview Courses

Case interview courses are more expensive to use than case interview prep books, but offer more efficient and effective learning. You’ll learn much more quickly from watching someone teach you the material, provide examples, and then walk through practice problems than from reading a book by yourself.

Courses typically cost anywhere between $200 to $400.

If you are looking for a single resource to learn the best case interview strategies in the most efficient way possible, enroll in our comprehensive case interview course .

Through 70+ concise video lessons and 20 full-length practice cases based on real interviews from top-tier consulting firms, you’ll learn step-by-step how to crush your case interview.

We’ve had students pass their consulting first round interview with just a week of preparation, but know that your success depends on the amount of effort you put in and your starting capabilities.

Case Interview Coaching

With case interview coaching, you’ll pay anywhere between $100 to $300 for a 40- to 60-minute mock case interview session with a case coach. Typically, case coaches are former consultants or interviewers that have worked at top-tier consulting firms.

Although very expensive, case interview coaching can provide you with high quality feedback that can significantly improve your case interview performance. By working with a case coach, you will be practicing high quality cases with an expert. You’ll get detailed feedback that ordinary case interview partners are not able to provide.

Know that you do not need to purchase case interview coaching to receive a consulting job offer. The vast majority of candidates that receive offers from top firms did not purchase case interview coaching. By purchasing case interview coaching, you are essentially purchasing convenience and learning efficiency.

Case interview coaching is best for those that have already learned as much as they can about case interviews on their own and feel that they have reached a plateau in their learning. For case interview beginners and intermediates, it may be a better use of their money to first purchase a case interview course or case interview prep book before purchasing expensive coaching sessions.

If you do decide to eventually use a case interview coach, consider using our case coaching service .

There is a wide range of quality among coaches, so ensure that you are working with someone that is invested in your development and success. If possible, ask for reviews from previous candidates that your coach has worked with.

Summary of the Best Consulting Interview Resources

Here are the resources we recommend to land your dream consulting job:

For help landing consulting interviews

• Resume Review & Editing : Transform your resume into one that will get you multiple consulting interviews

For help passing case interviews

• Comprehensive Case Interview Course (our #1 recommendation): The only resource you need. Whether you have no business background, rusty math skills, or are short on time, this step-by-step course will transform you into a top 1% caser that lands multiple consulting offers.
• Case Interview Coaching : Personalized, one-on-one coaching with a former Bain interviewer.
• Hacking the Case Interview Book   (available on Amazon): Perfect for beginners that are short on time. Transform yourself from a stressed-out case interview newbie to a confident intermediate in under a week. Some readers finish this book in a day and can already tackle tough cases.
• The Ultimate Case Interview Workbook (available on Amazon): Perfect for intermediates struggling with frameworks, case math, or generating business insights. No need to find a case partner – these drills, practice problems, and full-length cases can all be done by yourself.

For help passing consulting behavioral & fit interviews

• Behavioral & Fit Interview Course : Be prepared for 98% of behavioral and fit questions in just a few hours. We'll teach you exactly how to draft answers that will impress your interviewer.

Land Multiple Consulting Offers

Complete, step-by-step case interview course. 30,000+ happy customers.

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How to Succeed in a Case Study Interview

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Instructor: Jena Viviano

You’ve nailed the first few rounds of interviews, and now you’ve been invited to participate in a case study interview. Curious about what this next stage of the process looks like? In this course, Jena Viviano breaks it down for you, explaining the basic components of a case study interview, how to prepare, and what to do to project confidence and engage your interviewer. Learn how case study interview questions are used and why employers find them beneficial. Discover the key elements that interviewers use to evaluate your answers. Plus, learn how to formulate key questions to dig deeper into the case, develop your own framework for every case study answer, and craft a conclusion with supporting rationale that’s concise and clear. Jena also provides tips for quelling your performance anxiety, as well as sample case study questions that give you a better understanding of what to expect.

• May 13, 2020

A Quick Guide to Preparing for a Case Study Interview

Recruiting & Careers Social Influencer

Reviewed by Chris Leitch

Invited to participate in a case study interview but not sure about the best ways to get ready for it?

As you always want to be at your very best when interviewing with a company, the case study interview requires a bit more preparation than recognising some of the common types of job interviews .

While you’ll still need to impress a prospective employer with strong research, confident interview responses and a professional appearance , the case study interview tests your knowledge and abilities through a spontaneous, analytical exercise. It examines how you approach problem-solving with the pressure of handling a situation without previous knowledge of any details or context.

Although the consulting industry utilises it as an essential part of the hiring process, the case study interview can be also found in many other environments, including startups, government and corporate organisations. It measures a candidate’s analytical, logic reasoning and communication abilities while under pressure.

In this guide, we will cover what you need to know to successfully prepare for a case study interview.

Case Study Interviews Explained

Even if you’ve never participated in one, it’s likely you’ve heard stories about the case study interview format. The case study puts you, the candidate, on the spot to solve a business problem posed by the interviewers.

Case study interview questions cover a wide range of topics and do not look for a single ‘right’ answer. Instead, the format gives the interviewers a look at how you respond spontaneously while applying problem-solving skills to create a solution to the business challenge presented.

For example, an exercise might ask what the potential market size is for a vegan food company within a prospective city and if setting up shop within the region would be worth it. The case study may not share all the details to help you reach an answer, but it should prompt you to ask questions that help you structure your thought process.

What to Expect in a Case Study Interview

The ways by which a case study interview is conducted will vary by company. However, this format bears unique characteristics:

• You’ll receive an introduction to the business problem, its relevant details and other information that lend to setting context. Some companies may choose to share a briefing document for you to read, while others may prefer to communicate the scenario in conversation.
• Information about the business problem will be, to some degree, vague. While the problem may cover complex business concepts, expect that the information will provide a high-level description of the scenario – not detailed reports with specific facts and figures. Case study interviews present such information in general terms for a reason. They’re meant to provide just enough information so that you can choose how to approach your line of questioning to solve the problem.
• The discussion about the business problem will be led by either the interviewer or the candidate. You need to be prepared for both situations. Who leads the conversation about the business problem is important, as it reveals the direction the discussion will take.

In interviewer-led sessions, the interviewer seeks to gauge the quality of your approach as it relates to a specific part of the business problem. They control the dialogue, focusing on a series of tough questions unlike those considered to be difficult in other interview formats . The interviewer sticks to a line of questioning that refers to details and themes relevant to the business problem, and evaluates how you comprehend, interpret and recommend actions within this specific domain.

On the hand, candidate-led conversations evaluate your ability to understand a business problem comprehensively, and from multiple points of view. Consultants play different roles on projects. Their actions cover various levels of activity, from analysing the business facts and data, creating the solutions and communicating directly with the clients on the overall strategy and approach. You’ll need to show strong methodology to guide others in your process.

Candidate-led sessions are challenging because they give you the freedom to explain your best approach to tackle the entire problem, but without receiving the input or comments of others to help guide a conversation along.

How to Prepare for a Case Study Interview

As you might find these interviews to be difficult, intense and downright nerve-wracking , you can succeed in a case study interview through thoughtful preparation. Here are five tips to help you ace the interview:

1. Demonstrate Your Analytical, Reasoning and Communication Skills

While recapping key details of the business problem is important, the case study interview measures much more than your ability to recall the facts. It showcases how you think on your feet as you seek out information to determine your course of action.

While you might be comfortable sketching out a framework or a mathematical formula that helps you identify the way you wish to solve the problem, this interview format also tests your ability to explain the reasoning in a clear and believable manner to others.

To be successful in a case study interview, you must demonstrate the skill to process information quantitatively, as well as speak about your rationale and decisions convincingly.

2. Get Ready to Play an Active Role in the Discussion

Case study interviews require a high level of engagement. While other interviews might have you responding to questions with rehearsed answers, the case study interview presents a situation that is dynamic and unpredictable.

You’ll want to approach the session with an active disposition. This typically includes taking notes, documenting your observations and ideas, sketching out diagrams and charts, and asking follow-up questions throughout the interview .

3. Identify the Type of Problem Posed to You

Jobseekers may find that there are common themes that appear when covering the type of business problems found in case study interviews. Eight of the most common exercises explore these questions:

• Maths – eg: ‘How many more units do we need to sell to double the profit?’
• Market size – eg: ‘How big is the market size within the US for smart wearable devices?’
• Framework/Issue tree - eg: ‘Identify the factors you would consider in addressing the problem.’
• Data-chart insights – eg: ‘What story do the numbers tell about the operations of this business?’
• Value proposition – eg: ‘What factors do customers look for in choosing a mobile phone carrier?’
• Business valuation – eg: ‘Just how much is this company worth today, and would it change if acquired by our competitor?’
• Hypothesis – eg: ‘What are some possible reasons that explain this trend?’
• Brain teaser – eg: ‘How many tennis balls can you fit in an area that is twice the size of a football field?’

There is not a single approach that solves all business problems. By identifying the type of problem you’re encountering, you’ll be able to quickly determine the most appropriate method to apply.

For example, you might discover that a maths problem will rely on the knowledge of specific formulas and expressions, while a hypothesis question calls for a closer look at the root causes behind an issue.

4. Organise a Framework that Helps You Solve the Problem

Having a good framework to apply to a problem is the key to doing well in a case study interview. You want to show that you understand a business issue well enough to formulate recommendations or insights that address the problem. As there isn’t one right answer to such a problem, your interviewer will be interested to hear about the thought process you applied to arrive at your decisions.

The process may involve a range of problem-solving skills and methods, including the use of mathematical formulas, first-hand knowledge about an industry and decision-tree flowcharts that guide through questions you’ve applied to the issue.

It’s helpful to write down your framework and refer to it as needed. By having the steps outlined, you’ll be able to explain your recommendations in a clear and confident manner so that the rationale used in your analysis appears sound.

5. Practise, Practise, Practise!

Prepare for the case study interview by engaging in mock practice sessions before the big day. While it’s important to spend time putting together the methods you’ll use to analyse a business problem, enlisting the help of a friend or two familiar with this interview format is essential.

You’ll want to find case study examples online and share your selections with those helping you practise. Your friends should read the materials before the practice sessions and play the role of the interviewer.

By conducting a practice session as if it were the real thing, your friends will help you work through the awkwardness and spontaneity of the case study interview and develop the confidence to perform successfully.

By following these tips, you’ll be ready to show off your analytical, communication and problem-solving skills, all important to the case study interview. However, don’t limit your preparation only to the guidance given for this specific style; rather, you’ll want to make sure you continue the things that served you well for other interview formats, including making a good first impression and avoiding interview faux pas .

By combining those behaviours with the preparation, mindset and practice needed to solve business problems on your feet, you’ll put yourself in a great position to succeed at a case study interview.

Have you ever found yourself in a case study interview? What advice do you have to give? Let us know in the comments section below!

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50+ Case Interview Questions and Examples From Top Firms

Discover over 50 case interview questions and examples from top consulting firms. Prepare effectively for your next interview with expert insights and tips!

Posted August 22, 2024

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Table of Contents

Let’s face it, consulting interviews can be intimidating, especially with their complex case questions. These questions are designed to assess your problem-solving skills, analytical ability, and strategic thinking, crucial competencies for success in the consulting world. Recognizing the types of case interview questions and mastering them can significantly elevate your chances of landing your dream job in prestigious firms like McKinsey, BCG, or Bain.

This article serves as a comprehensive guide to mastering case interview questions, providing insights into the most common consulting case interview questions and detailed case interview examples from top consulting firms. From McKinsey case interview questions to unique challenges posed by firms like Deloitte and Accenture, we've got you covered. We will also share tips on how to ace your case interview and how to prepare for different types of case interview questions effectively.

By the end of this article, you'll have a well-rounded understanding of what to expect and how to showcase your problem-solving prowess when it matters most. Let’s begin!

List of Case Interview Questions, Practice Cases, and Examples

In preparing for your consulting interviews, it's crucial to familiarize yourself with the most common types of case interview questions. On this list, we will provide sample questions from the top consulting firms.

McKinsey Case Interview Examples

To excel in McKinsey case interviews , it's crucial to practice with specific examples that mirror the real challenges you might face. Here are some detailed scenarios from McKinsey to guide your preparation:

1. Beautify Case

Sample Question #1 : Beautify is excited to support its current staff of beauty consultants on the journey to becoming virtual social media-beauty advisors. Consultants would still lead the way in terms of direct consumer engagement and would be expected to maintain and grow a group of clients. They would sell products through their own pages on beautify.com, make appearances at major retail outlets, and be active on all social media platforms.

What possible factors should Beautify consider when shifting this group of employees toward a new set of responsibilities?

Sample Question #2 : One of the key areas that Beautify wants to understand is the reaction of current and potential new customers to the virtual social media-beauty advisors.

Imagine you are a current Beautify customer and you mostly shop at your local department store because you enjoy the high-touch service offered by in-store consultants. What features would make you consider switching to a mostly virtual sales experience?

See more questions here .

2. Diconsa Case

Sample Question #1 : What should the team investigate to determine whether the Diconsa network could and should be leveraged to provide a range of basic financial services to Mexico’s rural population?

Sample Question #2: The team has estimated that it currently costs a family 50 pesos per month in transportation and food to make the journey to collect benefit payments. The team also estimates that if benefits were available for collection at local Diconsa stores, the cost would be reduced by 30 percent.

Twenty percent of Mexico’s population is rural, and of that number, half currently receive state benefits.

You can assume that Mexico has a population of 100 million.

You can also assume that families in Mexico have an average four members, and that this does not vary by region.

If every family could collect state benefits at their local Diconsa stores, how much in total per year would be saved across all Mexican rural families receiving state benefits?

3. Electro-Light Case

Sample Question #1: What key factors should SuperSoda consider when deciding whether or not to launch Electro-Light?

Sample Question #2: SuperSoda executives believe that the company's position as a top-three beverage company gives it strategic impetus toward achieving the desired market share. However, they ask the team to outline what would be needed to achieve the target 12.5 percent share of the electrolyte-drinks market. What would SuperSoda need to do to gain the required market share for Electro-Light following its launch?

4. National Education System Transformation

Sample Question #1: What issues would you want to investigate in diagnosing the current state of the Loravian school system?

Sample Question #2: One of the clients at Loravian’s educational department mentions neighbor country “C” as an example, because it’s outperforming all of Loravia's economic peers and neighbors in the international assessment. She believes that the more concentrated school structure in this country is a big reason for better outcomes in the international assessment. She suggests that having larger, less fragmented schools allows for more effective teacher selection and training, leading to improved education outcomes for students. Finally, she shares that 15 percent of Loravia's population is currently attending school.

What would be the reduction in the total number of schools in Loravia if it were to achieve the same average school size as neighbor country C?

5. Talbot Trucks Case

Sample Question #1: What information would you want to collect to understand the attractiveness for Talbot Trucks in producing and selling eTrucks in Europe?

Sample Question #2: After running focus groups with Talbot Trucks’ customers, the team concluded that the total cost of an eTruck needs to be the same as a diesel truck to be considered attractive to customers. Currently, a Talbot Trucks diesel truck costs €100,000.

Assuming that the figures above do not change, what is the maximum price Talbot Trucks can charge for its eTruck so that the total cost of ownership is equal to that of a diesel truck?

6. Shops Corporation Case

Sample Question #1: What types of factors would you want to explore to understand how Shops Corporation might improve its diversity within senior leadership?

7. Conservation Forever Case

Sample Question #1: What factors could the team consider when choosing one of the three specific geographies on which to focus the conservation efforts?

Sample Question #2: The director of CF likes these initial projections, but is not convinced that the assumptions are realistic. They tell the team, “According to your model, there are three levers we need to focus on to generate revenue from ecotourism in Peru: number of visitors, length of stay, and spending amount. What are your best ideas for how to maximize each lever? And how about some ideas outside of the constraints of this model?”

Your team is meeting in ten minutes to generate ideas in preparation for a workshop with leaders from several coastal communities, and you are jotting down some notes.

What ideas do you have to generate revenue linked to ecotourism?

McKinsey offers case interview examples that cover various industries and problem-solving scenarios, helping you prepare for any interview question. Engaging with these cases will not only boost your confidence but also enhance your ability to approach complex business problems with innovative solutions.

BCG Case Interview Examples

At BCG , the case interview process is designed to simulate the real-world problems that client teams face, allowing you to demonstrate your problem-solving abilities and specialized skills relevant to the role. Embracing the challenge with enthusiasm will not only make the experience rewarding but also provide a true taste of consulting life at BCG. Here are some of their case interview examples:

Here are a few examples of common case questions:

• Should a company enter a new market?
• Should a company pursue a new product line?
• How can a company improve its profitability?
• How can a company reduce costs?
• How can a company improve its customer satisfaction?

Read: How to Prepare for Boston Consulting Group Management Consulting Case Interviews?

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Bain Case Interview Examples

During your preparation for Bain case interviews, it's essential to delve into specific examples that reflect the real challenges you may encounter. Here's are five examples of practice cases and mock interview tips provided by Bain to guide your preparation:

• Coffee Shop Co. Practice Case
• FashionCo. Practice Case
• Associate Consultant Mock Interview
• Consultant Mock Interview
• Written Case Interview Tips

Read : Bain Case Interviews: A Comprehensive Preparation Guide

Deloitte Case Interview Examples

Deloitte provides a rich array of materials and interactive case studies designed to prepare you for the rigors of their case interviews. These examples reflect real client engagements, offering insights into the complex problems you may face and the analytical, creative, and strategic thinking required to solve them.

Deloitte Case Examples

Footloose Case Study sample questions:

• How big is the work boot market (expressed in euros)? Does Duraflex get more of its revenue from work boots or casual boots?
• Explain why Badger is outperforming Duraflex in the work boot market.
• What changes would you recommend to Duraflex’s work boot strategy? Why? Would you recommend they introduce a sub- branded boot line?

Engagement Strategy: Federal Agency V sample questions:

• To begin an engagement strategy, how might you establish a baseline to measure employee engagement against?
• What characteristics would you look for in external organizations to use as potential benchmarks?
• What are the various populations of the workforce and how would you engage them?
• How will you use Deloitte’s relationship with, and institutional knowledge, of Agency V to develop your deliverables?

Recreation Unlimited sample questions :

• What are potential reasons for Recreation Unlimited's poor eCommerce performance relative to competitors?
• In order to win digital customers, Recreation Unlimited wants to find ways to improve and differentiate their digital customer experience. What are some potential ways to improve the customer experience and how does improving customer experience create value for the customer and value for the business?
• As part of the digital strategy that Recreation Unlimited is considering, they are debating whether to improve the website experience or increase digital marketing. Since they are not sure they will have the budget for both, they want you to help them decide. How would you approach this question?

Strategic Vision: Federal Benefits Provider sample questions :

• What steps should the Deloitte team take to develop a 10-year strategic roadmap for the Agency?
• What are the components or metrics of a business case that should be considered to justify the development of a 10-year strategic roadmap?
• In building the 10-year strategic road map, the Deloitte team realizes there are several key challenges that pose impediments to implementing the Agency’s vision. What is the cost of each challenge to the Agency?
• Leaders in the various departments remain skeptical that the 10-year vision can positively impact their unique operations, while employees are largely unaware of the 10-year vision initiative. How might Deloitte develop an impactful change management strategy to institutionalize the goals of the 10-year vision and ensure buy-in across the Agency’s diverse workforce?

Talent Management: Federal Civil Cargo Protection Bureau sample questions:

• What data would you want to have to be able to move forward?
• What immediate steps would you take to review screening processes and training procedures?
• How would you incorporate things like job descriptions and competencies in your review in order to build a new human capital strategy?
• How will you engage and develop leadership given the Chief Administrator is new to the role and has a different background?

Click here to practice a consulting case interview.

Read : Best 30 Free Resources to Get into Management Consulting

Accenture Case Interview Examples

Accenture's case interviews serve as the final hurdle to becoming a consultant at the firm. These interviews are uniquely structured to assess a candidate's ability to solve complex business problems. The format includes both interviewer-led and candidate-led cases, providing a comprehensive evaluation of your problem-solving capabilities.

Learn more about Accenture’s Case Interview Workbook here .

OC&C Case Interview Examples

OC&C , a globally recognized but relatively smaller strategy consulting firm, is known for its rigorous case interviews that reflect real-life client challenges. These interviews are designed to assess a wide range of skills, from analytical thinking to business acumen, tailored to the firm's focus on private equity clients and seven key industries.

1. Leisure Clubs Case sample questions:

• What factors might you analyze to determine what is going to happen to demand for leisure clubs?
• What is likely to happen to demand for leisure clubs?
• What is the critical issue for our client?

2. Important Whisky in an Emerging Market Case sample questions:

• What information would you require to help explain the slowing down of growth?
• What is driving profitability down?
• What are the potential strategic options?

Oliver Wyman Case Interview Examples

Oliver Wyman's case interviews are designed to uncover how you approach unstructured challenges and evaluate data to build comprehensive solutions. The firm encourages candidates to think critically and creatively, using logical components to break down complex problems.

See how Oliver Wyman can help you with interview preparation by explaining conversational and case interviews, as well as sharing interview tips and explaining what the role of the case interview is.

A.T. Kearney Case Interview Examples

A.T. Kearney's interview process is notably rigorous, tailored to assess a wide range of abilities from analytical thinking to strategic problem-solving. Take a look at A.T. Kearney’s case example and case book to help you how to prepare effectively:

• Promotional Planning Case example
• Consulting Case Book and Tips for Interviewing

Strategy& / PWC Case Interview Examples

Strategy& / PWC focuses on executive-level strategic issues, such as capability identification, market positioning, and operational efficiency. This branch's case interviews are designed to simulate real business challenges, helping to prepare candidates for the demands of strategic consulting roles. Here's a closer look at the types of questions you might encounter:

Sample Question 1: Market sizing

• Estimate the size (by value) of the UK grocery retail market

Sample Question 2: Market sizing

• Estimate the size (by value) of the UK retail cooking sauces market

Sample Question 3: Interpreting information and drawing conclusions

• Look at the chart on the following slide
• Interpret the meaning of the chart
• How are things changing? Who's winning and who's losing?
• Given your knowledge of the UK grocery market, why might this be?

Learn more about case interview preparation by reading through Strategy& / PWC’s presentation .

L.E.K. Consulting Case Interview Examples

The case interview process at L.E.K. Consulting is rigorous – designed to evaluate a candidate's ability to solve complex business problems. The interviews are structured across multiple rounds, each focusing on different aspects of your analytical and strategic thinking abilities. Here's what you need to know to prepare effectively:

• Interview Preparation
• Market Sizing Case Example Video Walkthrough

Roland Berger Case Interview Examples

The case interviews at Roland Berger are designed to evaluate your ability to display key personality traits, with a notable preference for candidates who have international experience, as this is explicitly stated by the firm. Roland Berger has provided two case webinars on their website. Each example provides a case scenario, problem, and tips on how to answer the questions.

• 3D Printed Hip Implants Case / 3D Printed Hip Implants Case 2 sample questions:
• Based upon the explanation process: Which are the most important costs to consider?
• Is additive manufacturing of the hip implant – based upon the given information – lucrative?
• Which measures could increase the economic feasibility of the product?
• Transit Oriented Development Case / Transit Oriented Development Case 2 sample questions:
• How would you split the 416 stations between little, medium, and large revenue potential?
• How can the public transport operator of Munich increase its revenue through focusing on its existing rail stations?

Capital One Case Interview Examples

The structure of a Capital One case interview typically involves three key sections: outlining the business situation and framework, tackling quantitative questions, and formulating a recommendation based on your calculations. Expect scenarios that might not strictly adhere to the MECE principle (Mutually Exclusive, Collectively Exhaustive), which is often a staple in consulting case interviews. This approach reflects the real-world ambiguity you might face in business situations, requiring a flexible and adaptive problem-solving strategy. Here's a video walkthrough on everything there is need to know about Capital One case interview:

• Strategy Analyst - Case Study Guide

EY Parthenon Case Interview Examples

EY-Parthenon case interviews are designed to mimic real-life challenges, providing a glimpse into the practical work of a consultant. The interviews are candidate-led, similar to styles seen at BCG or Bain, and focus on several key areas including analytical thinking, structured problem-solving, and effective communication. The EY-Parthenon behavioral interview questions are comparable to those you would encounter in interviews for other top-tier management consulting firms. Be prepared to answer the following questions:

EY-Parthenon Case Interview Behavioral/FIT Questions

• Tell me about yourself.
• Why are you interested in consulting, and why specifically EY-Parthenon?
• Describe a time when you worked on a team project. What was your role, and how did you contribute to the team’s success?
• Can you provide an example of a challenging problem you faced at work and how you solved it?
• How do you handle tight deadlines and pressure? Can you give an example?
• Tell me about a time when you had to influence someone to achieve a goal.
• How do you prioritize tasks when you have multiple projects to manage?
• Describe a situation where you had to deal with a difficult team member. How did you handle it?
• What is your greatest professional achievement so far?
• Give an example of a time when you had to learn something new quickly.
• Why do you think you would be a good fit for EY-Parthenon’s culture?
• Tell me about a time you failed or made a mistake. How did you handle it?
• Can you provide an example of a project where you demonstrated leadership?
• How do you handle feedback and criticism?
• Are there any questions that you have for me?
• Your answer for this question must be a resounding “YES”. The more you have questions for them, the better because that shows that you’ve researched the company. You may ask about a particular previous project they did or something in particular to their operations.

Online Case Interview Examples from Consulting Clubs

Mastering the case interview is essential in consulting, and consulting clubs are key in this preparation. NYU, Duke, and Kellogg Consulting Club, for instance, provide free various interview cases, both individual and group, that mimic real consulting challenges.

• NYU Stern MCA 2020-2021 Casebook
• Columbia Business School 2021 Casebook
• The Duke MBA Consulting Club Casebook 2021-2022
• UCLA Case Book 2019 – 2020
• Darden School Of Business 2021-2022 Casebook
• Kellogg Consulting Club 2020 Casebook
• Cornell MBA Johnson Consulting Club Casebook 2020-2021
• Notre Dame Casebook 2022
• FMS Consulting Casebook 2021-22
• INSEAD Consulting Club Casebook 2021
• IIMC Consulting Casebook 2021-22
• IIM Lucknow Casebook 2022
• Harvard Business School Management Consulting Club Case Interview Examples
• Berkeley Haas School of Business Consulting Club Interview Preparation Guide and Case Interview Examples 2019

How to Ace Your Case Interview

To excel in your case interview, it's crucial to demonstrate a blend of problem-solving skills, analytical ability, strategic and logical thinking, and comfort with ambiguity. These elements are essential as they reflect real client projects that you might handle at firms like Deloitte Consulting LLP.

Read : The 15 Most Common Consulting Interview Questions — With Answers

Step-by-Step Approach to Case Interviews

• Understand the Issue : Start by clarifying the case question. Ensure you fully grasp the problem before proceeding.
• Develop a Framework : Articulate a framework and initial hypothesis to explore. This helps in structuring your response and guides your analysis.
• Analytical Execution : Engage in logical storytelling. Walk the interviewer through your thought process and explain your assumptions. Take notes and structure your analysis clearly.
• Recommendation and Next Steps : Conclude with a strong recommendation based on your findings. Outline the next steps and expected results or impacts.

Read : Mastering Consulting Cases: A Step-by-Step Approach

Tips on How to Prepare For Your Case Interview

To excel in your case interview preparation, it's essential to engage in extensive practice with a variety of case types. Successful candidates often practice with dozens of case interview scenarios, treating the preparation process with the same rigor as studying for finals or the GMAT. Here are key steps to enhance your preparation:

• Diverse Practice Cases : Ensure the practice cases you use cover a broad spectrum of problems, including profitability, market sizing, and business expansion scenarios. This variety prepares you for any curveballs and helps develop flexibility in applying different frameworks.
• Quality of Practice Materials : Select high-quality practice cases from trusted sources. The content and structure of these cases should closely mimic the types of cases presented in actual interviews at top consulting firms.
• Framework Mastery : Rather than memorizing frameworks, focus on understanding and adapting them to fit different case scenarios. This approach helps in crafting tailored solutions during your actual interview.
• Time Management : Practice managing your time effectively during mock interviews. Top consulting firms like Bain appreciate candidates who can efficiently organize and analyze information under time constraints.
• Engage with Realistic Simulations : Participate in mock interviews and case sessions that simulate the actual interview environment. This practice helps you refine your problem-solving approach and improve your communication skills under pressure.
• Continuous Learning and Adaptation : Stay informed about new trends and changes in the consulting interview landscape. Engage with resources that provide updates and insights into evolving interview formats.

Personalized Coaching : Consider working with an experienced coach who can provide personalized feedback and guidance. Coaching can significantly enhance your performance by focusing on areas that need improvement.

Practice with Experts from Leland

Through an extensive exploration of the various aspects of case interviews across prestigious consulting firms like McKinsey, BCG, Bain, Deloitte, Accenture, and others, it's evident that thorough preparation and an adaptable mindset are critical for success.

Leland offers comprehensive case study interview preparation tailored to help you excel in consulting case interviews. Our experienced consultants provide personalized coaching, realistic case simulations, and strategic feedback to enhance your problem-solving skills and boost your confidence. With our expert guidance, you'll be well-prepared to tackle any case interview challenge and make a lasting impression.

What questions should you consider asking during a case study interview?

• In your case study interview, it's crucial to ask insightful questions to understand the context fully. Consider asking about how the interviewee discovered your company, the timeline of their engagement, their initial experiences with your company, the challenges they aimed to address, and whether they considered any competitors or alternative solutions.

What strategies can enhance your performance in a case interview?

• To excel in a case interview, start by taking a moment to organize your thoughts before responding. Structure your response logically, guiding the interviewer through your thought process and clarifying any assumptions you make. Maintain composure and treat the interview as a professional conversation, which can help alleviate pressure.

How can you excel in a case study interview?

• To perform well in a case study interview, make sure to take detailed notes throughout. Even if you are not familiar with the industry, focus on demonstrating your analytical skills and how you approach problem-solving. Communicate clearly and ensure you have a thorough understanding of the problem you're asked to analyze.

What types of questions are typically asked in case interviews?

• Case interviews generally include questions from nine key categories, such as framework or issue tree questions, market-sizing and guesstimate questions, valuation inquiries, brain teasers, chart interpretation, value proposition analysis, informational queries, and mathematical problems.

Preparing for consulting recruiting and/or case interviews? Here are some additional resources to help:

• Top 3 Tactics to Ace Your Case Interview
• A Comprehensive Guide to McKinsey & Co., Bain & Co., and Boston Consulting Group
• From No Offers to Multiple Offers - How to Take Your Casing to the Next Level
• Soft Skills for Consulting: Why They Matter and How to Develop Them
• Five Tips to Break Into Management Consulting

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280 Free Case Interview Examples

Do you want to get access to over 280 free case interview examples (with answers)?

If you have interviews planned at McKinsey ,  The Boston Consulting Group , or any other consulting firm, you are probably looking for case interview examples.

So, to help you prepare, I have compiled a list of 280 free case interview examples:

• Over 30 free case interview examples (+ interview prep tips) from the websites of top consulting firms
• More than 250 free case interview examples from top business school case books

Moreover, you’ll get  my take on which case studies you will likely have in interviews.

In short, the resources listed hereafter will be very helpful if you are starting out or have already made good progress in preparing for your case interviews.

One last word : check out this free case-cracking course to learn how to crack the most recent types of case questions consulting firms use in actual interviews.

Let’s get started!

Table of Contents

Get the latest data about salaries in consulting, mckinsey: tips and case interview examples.

McKinsey & Company’s website is definitely one of my favorites.

Because this gives so much insightful information about the role of a consultant and what the hiring process looks like.

Therefore, I highly recommend spending time on their website, even if you are not targeting McKinsey.

In the meantime, here are 8 McKinsey case interview examples

• Electro-light
• GlobaPharma
• National Education
• Talbot trucks
• Shops corporation
• Conservation forever

Check out the McKinsey Hub : A library of 20+ free resources that cover everything you need to secure a job offer at McKinsey.

Besides, here is another McKinsey case interview example.

This case interview question has been recently asked in a real interview:

𝘦𝘊𝘢𝘳𝘊𝘰, 𝘢 𝘑𝘢𝘱𝘢𝘯𝘦𝘴𝘦 𝘭𝘦𝘢𝘥𝘪𝘯𝘨 𝘮𝘢𝘯𝘶𝘧𝘢𝘤𝘵𝘶𝘳𝘦𝘳 𝘰𝘧 𝘦𝘭𝘦𝘤𝘵𝘳𝘪𝘤 𝘱𝘢𝘴𝘴𝘦𝘯𝘨𝘦𝘳 𝘷𝘦𝘩𝘪𝘤𝘭𝘦𝘴, 𝘩𝘢𝘴 𝘣𝘦𝘦𝘯 𝘴𝘵𝘳𝘶𝘨𝘨𝘭𝘪𝘯𝘨 𝘸𝘪𝘵𝘩 𝘢 𝘭𝘰𝘸 𝘮𝘢𝘳𝘬𝘦𝘵 𝘴𝘩𝘢𝘳𝘦 𝘪𝘯 𝘵𝘩𝘦 𝘉2𝘉 𝘴𝘦𝘨𝘮𝘦𝘯𝘵. 𝘛𝘩𝘦𝘺 𝘦𝘯𝘫𝘰𝘺 𝘴𝘵𝘳𝘰𝘯𝘨 𝘱𝘰𝘴𝘪𝘵𝘪𝘰𝘯𝘴 𝘪𝘯 𝘵𝘩𝘦 𝘉2𝘊 𝘴𝘱𝘢𝘤𝘦, 𝘣𝘰𝘵𝘩 𝘥𝘰𝘮𝘦𝘴𝘵𝘪𝘤𝘢𝘭𝘭𝘺 𝘢𝘯𝘥 𝘪𝘯 𝘵𝘩𝘦 𝘪𝘯𝘵𝘦𝘳𝘯𝘢𝘵𝘪𝘰𝘯𝘢𝘭 𝘮𝘢𝘳𝘬𝘦𝘵. 𝘏𝘰𝘸𝘦𝘷𝘦𝘳, 𝘦𝘊𝘢𝘳𝘊𝘰’𝘴 𝘴𝘢𝘭𝘦𝘴 𝘵𝘰 𝘴𝘮𝘢𝘭𝘭 𝘢𝘯𝘥 𝘮𝘦𝘥𝘪𝘶𝘮 𝘴𝘪𝘻𝘦 𝘣𝘶𝘴𝘪𝘯𝘦𝘴𝘴𝘦𝘴 𝘤𝘰𝘯𝘵𝘪𝘯𝘶𝘦 𝘴𝘵𝘢𝘺𝘪𝘯𝘨 𝘧𝘢𝘳 𝘣𝘦𝘭𝘰𝘸 𝘦𝘹𝘱𝘦𝘤𝘵𝘢𝘵𝘪𝘰𝘯𝘴. 𝘛𝘩𝘦 𝘊𝘌𝘖 𝘩𝘢𝘴 𝘪𝘯𝘷𝘪𝘵𝘦𝘥 𝘺𝘰𝘶 𝘵𝘰 𝘩𝘦𝘭𝘱 𝘵𝘩𝘦𝘮 𝘰𝘶𝘵.

How would you approach this business problem?

When ready, check this video below where I present how to approach this problem.

BCG: Tips And Case Interview Examples

The Boston Consulting Group website  states something very important: the goal of the hiring process is to get to know you better, which means, in the context of Consulting interviews, understanding how you solve problems .

Remember this: in case interviews,  to show how you think is MUCH MORE IMPORTANT than to find an answer to the case .

As a result, you will have case study questions to showcase your problem-solving skills. Likewise, fit interviews have the same purpose: to show what problems you faced and how you resolved them.

• BCG interview prep tips
• BCG’s interactive case tool
• BCG case interview example: climate change challenge
• BCG case interview example: GenCo
• BCG case interview example: FoodCo

Check out the BCG Hub : A library of 20+ free resources that cover everything you need to secure a job offer at BCG.

Bain: Tips And Case Interview Examples

Bain & Company’s website highlights something very important: successful applicants manage to turn a case interview into a conversation between two consultants .

In other words, you don’t want to appear as a candidate but as a consultant !

To do this, you need to master the main problem-solving techniques that consulting firms want to see.

• Bain interview prep tips here and here
• Bain case interview examples: coffee , fashioco
• Bain case interview sample videos: a first video , a second video

Check out the Bain Hub : A library of 20+ free resources that cover everything you need to secure a job offer at Bain & Company.

Deloitte: Tips And Case Interview Examples

As for the BCG’s section above, the Deloitte website clearly states that in case interviews , it is much more important to show how you think and interact with your interviewer than to find the right answer to the case.

• Deloitte interview prep tips
• Deloitte case interview examples: here (more than 15 case interview examples)
• Deloitte case interview example: Federal Agency
• Deloitte case interview example: Recreation Unlimited
• Deloitte case interview example: Federal benefits Provider
• Deloitte case interview example: Federal Civil Cargo protection Bureau

Get 4 Complete Case Interview Courses For Free

You need 4 skills to be successful in all case interviews: Case Structuring, Case Leadership, Case Analytics, and Communication. Join this free training and learn how to ace ANY case questions.

Oliver Wyman: Tips And Case Interview Examples

Like the Deloitte website, Oliver Wyman’s website points out that, above all,  you must demonstrate your ability to think in a structured, analytical, and creative way.

In other words, there are no right or wrong answers, but only showing how you solve problems matters.

• Oliver Wyman interview prep tips
• Oliver Wyman case interview examples: here (Aqualine) and here (Wumbleworld)

Kearney: Tips And Case Interview Examples

Now it’s time to tell you something you could have heard a hundred times.

Yet too many candidates do it.

Do NOT force your solution to adapt to a standard framework . As a result, this will only take you to a place you don’t want to go: the pool of rejected candidates .

To learn more about this, check the “What Not To Do” section on the AT Kearney website .

• Kearney interview prep tips
• Kearney case interview examples: here and here
• Kearney case book: here

Strategy&: Interview Prep Tips

Strategy& doesn’t provide case study examples on its website, but it shares insights on career progression, which I recommend reading when you prepare for your fit interviews.

• Strategy& interview prep tips

Roland Berger: Tips And Case Interview Examples

I like the examples of case studies presented on the Roland Berger website .

Because the two examples of case studies are very detailed and illustrate the kind of solutions your interviewers expect during case discussions.

• Roland Berger interview prep tips
• A first Roland Berger case interview example: part 1 and part 2
• A second Roland Berger case interview example: part 1 and part 2

Alix Partners: Interview Prep Tips

Like Strategy&, Alix Partners doesn’t provide case study examples on its website.

However, they give an overview of what they are looking for: they want entrepreneurial, self-starter, and analytical candidates, which are skills that all consulting firms highly appreciate .

• Alix Partners interview prep tips

OC&C: Interview Prep Tips

Here are two case study examples from OC&C:

• Imported spirit
• Leisure clubs

253 Case Studies From Business School Case Books

Most of these 253 case study examples are based on case interviews used by consulting firms in real job interviews .

As a result, you can have a good idea of the case study questions you can have when interviewing at these firms .

The Full List Of 253 Free Case Study Examples

• Chicago business school
• Australian Graduate School of Management
• Columbia business school
• Harvard business school
• Wharton business school (2009)
• Wharton busines school (2017)
• Darden business school

Do you want to practice a specific type of case study? Now you can…

I have sorted this list of 253 case studies by type:  profitability, market expansion, industry analysis, pricing, investment or acquisition,  and guesstimates (also known as market sizing questions).

Bonus #1: Know The Types Of Cases You Are Likely To have During Your Interviews

• Profitability cases (29% of cases from that list)
• Investment cases (19% of cases from that list)
• Market sizing questions (15% of cases from that list)

As a result, assuming you’ll have 6 interviews (and therefore 6 case interviews) during the recruitment process:

• “Profitability cases are 29%”  means that chances to have 2 profitability case studies during your recruitment process are very high
• “Investment cases are 19%”  means that chances to have 1 investment case study during your recruitment process are very high.
• “ Guesstimates are 15%”  means that chances of having  1 market sizing question during your recruitment process are high.

Bonus #2: The 10 Cases I Recommend You Doing Now

Over 250 examples of case interviews are a great list, and you may not know where to start.

So, I’ve compiled a list of my 10 favorite case studies.

The 5 case studies I recommend doing if you are a BEGINNER

1. stern case book: drinks gone flat (starting at page 24).

This is a good introduction to a common type of case (declining sales here). I liked the solution presented for this case, particularly how it started by isolating declining sales (what range of products? Volumes or prices, or both?).

2. Stern case book: Sport bar (starting at page 46)

This is an investment case (should you invest in a new bar). Even if the solution presented in this case book is not MECE , it covers the most common quantitative questions you might have in such a case. I recommend doing this case.

3. Stern case book: MJ Wineries (starting at page 85)

This is a profitability case. I liked the solution presented in this case because it illustrates how specific good candidates should be. The case concerns wine, so a good candidate should mention the quality of lands and grapes as important factors.

4. AGSM case book: Piano tuners (starting at page 57)

This is a typical market sizing question. How to answer this type of question is a must-know before going to your interviews.

5. Darden case book: National Logistics (starting at page 49)

Again, this is a very common case (how to reduce costs). I liked the broad range of questions asked in this case, covering key skills assessed by consulting firms during case interviews: brainstorming skills (or creativity), quantitative skills, and business sense.

The 5 case studies I recommend if you are more ADVANCED in your preparation

1. stern: the pricing games (starting at page 55).

This case study asks you to help your client assess different business models. I liked this case because the range of issues to tackle is quite broad.

2. Wharton 2017: Engineer attrition at SLS Oil & Gas Services (starting at page 55)

I liked this case study because the case prompt is uncommon: your client has been facing a very high attrition rate among its population of Engineers. As a result, it’s very unlikely that your solution fits a well-known framework, and you’ll have to demonstrate your problem-solving skills by developing a specific solution.

3. Wharton 2017: Pharma Company Goes International, Outsources Benefits, Integrates New Technology (starting at page 95)

This case is about a client considering outsourcing a part of their activity. Even though I don’t know if this type of case study is very common, I had many case studies like this when I passed my interviews a few years ago. And I always found them difficult!

4. Insead: Gas retail case (starting at page 73)

The question in the problem statement is very broad, making this case difficult. So, only good candidates can have a structured case discussion here.

5. Darden: Fire Proof (starting at page 84)

This is a market entry case. Try to solve it by developing a structure as MECE as possible.

CareerInConsulting.com's Free Resources

Access my exclusive free training to help you prepare for your case interviews .

Besides, you can learn my step-by-step guide to answering market sizing questions .

You’ll get my formula to solve all market sizing questions.

Moreover, if you are a beginner, you can read my article on how to solve business cases (+ a 4-week prep plan to get case interview ready).

Also, check these 11 must-know frameworks to ace your case interviews.

Finally, you can read the articles in the blog section of my website.

That’s quite a list.

To complete this list, check this free case interview course , where you’ll find case questions recently asked in actual interviews.

Now, I’d like to hear from you.

Which key insights were new to you?

Or maybe I have missed something.

Either way, let me know by leaving a comment below.

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You need 4 skills to be successful in all case interviews: Case Structuring, Case Leadership, Case Analytics, and Communication. Enroll in our 4 free courses and discover the proven systems +300 candidates used to learn these 4 skills and land offers in consulting.

35 Case Interviews Examples from MBB / Big Four Firms

Studying case interview examples is one of the first steps in preparing for the  management consulting  recruitment process. If you don’t want to spend hours searching the web, this article presents a comprehensive and convenient list for you – with 35 example cases, 16 case books, along with a case video accompanied by detailed feedback on tips and techniques.

A clear understanding of “what is a case interview” is essential for effective use of these examples. I suggest reading our  Case Interview 101  guide, if you haven’t done so.

McKinsey case interview examples

Mckinsey practice cases.

• Diconsa Case
• Electro-Light Case
• GlobaPharm Case
• National Education Case

What should I know about McKinsey Case interviews?

At McKinsey, case interviews often follow the interviewer-led format , where the interviewer asks you multiple questions for you to answer with short pitches.

How do you nail these cases? Since the questions can be grouped into predictable types, an efficient approach is to master each question type. However, do that after you’ve mastered the case interview fundamentals!

For a detailed guide on interviewer-led cases, check out our article on McKinsey Case Interview .

BCG & Bain case interview examples

Bcg practice cases.

• BCG – Written Case – Chateau Boomerang

Bain practice cases

• Bain – Coffee Shop Co.
• Bain – Fashion Co.
• Bain – Mock Interview – Associate Consultant
• Bain – Mock Interview – Consultant

What should I know about BCG & Bain case interviews?

Unlike McKinsey, BCG and Bain case interviews typically follow the candidate-led format – which is the opposite of interviewer-led, with the candidate driving the case progress by actively breaking down problems in their own way.

The key to acing candidate-led cases is to master the case interview fundamental concepts as well as the frameworks.

Some BCG and Bain offices also utilize written case interviews – you have to go through a pile of data slides, select the most relevant ones to answer a set of interviewer questions, then deliver those answers in a presentation.

For a detailed guide on candidate-led cases, check out our article on BCG & Bain Case Interview .

Deloitte case interview examples

Deloitte practice cases.

Undergrad Cases

• Human Capital – Technology Institute
• Human Capital – Agency V
• Strategy – Federal Benefits Provider
• Strategy – Extreme Athletes
• Technology – Green Apron
• Technology – Big Bucks Bank
• Technology – Top Engine
• Technology – Finance Agency

Advanced Cases

• Human Capital – Civil Cargo Bureau
• Human Capital – Capital Airlines
• Strategy – Club Co
• Strategy – Health Agency
• Technology – Waste Management
• Technology – Bank of Zurich
• Technology – Galaxy Fitness

What should I know about Deloitte case interviews?

Case interviews at Deloitte also lean towards the candidate-led format like BCG and Bain.

The Deloitte consultant recruitment process also features group case interviews , which not only test analytical skills but also place a great deal on interpersonal handling.

Accenture case interview examples

Accenture divides its cases into three types with very cool-sounding names.

Sorted in descending order of popularity, they are:

These are similar to candidate-led cases at Bain and BCG. albeit shorter – the key is to develop a suitable framework and ask the right questions to extract data from the interviewer.

These are similar to the market-sizing and guesstimate questions asked in interviewer-led cases – demonstrate your calculations in structured, clear-cut, logical steps and you’ll nail the case.

These cases have you sort through a deluge of data to draw solutions; however, this type of case is rare.

Capital One case interview examples

Capital One is the odd one on this list – it is a bank-holding company. Nonetheless, this being one of the biggest banks in America, it’s interesting to see how its cases differ from the consulting ones.

Having gone through Capital One’s guide to its cases, I can’t help but notice the less-MECE structure of the sample answers. Additionally, there seems to be a greater focus on the numbers.

Nonetheless, having a solid knowledge of the basics of case interviews will not hurt you – if anything, your presentation will be much more in-depth, comprehensive, and understandable!

See Capital One Business Analyst Case Interview for an example case and answers.

Other firms case interview examples

Besides the leading ones, we have some examples from other major consulting firms as well.

• Oliver Wyman – Wumbleworld
• Oliver Wyman – Aqualine
• LEK – Cinema
• LEK – Market Sizing
• Kearney – Promotional Planning
• OC&C – Imported Spirits
• OC&C – Leisure Clubs

Consulting clubs case books

In addition to official cases, here are a few case books you can use as learning materials.

Do keep in mind: don’t base your study on frameworks and individual case types, but master the fundamentals so you can tackle any kind of case.

• Wharton Consulting Club Case Book
• Tuck Consulting Club Case Book
• MIT Sloan Consulting Club Case Book
• LBS Consulting Club Case Book
• Kellogg Consulting Club Case Book
• INSEAD Consulting Club Case Book
• Harvard Consulting Club Case Book
• ESADE Consulting Club Case Book
• Darden Consulting Club Case Book
• Berkeley Consulting Club Case Book
• Notre-Dame Consulting Club Case Book
• Illinois Consulting Club Case Book
• Columbia Consulting Club Case Book
• Duke Consulting Club Case Book
• Ross Consulting Club Case Book
• Kearney Case Book

Case interview example – Case video

The limitation of most official case interview examples is that they are either too short and vague, or in text format, or both.

To solve that problem for you, we’ve extracted a 30-minute-long, feedback-rich case sample from our Case Interview End-to-End Secrets Program .

This is a candidate-led, profitability case on an internet music broadcasting company called Pandora.

In 30 minutes, this candidate demonstrates the exact kind of shortcoming that most candidates suffer during real case interviews – they come in with sharp business senses, then hurt their own chances with inadequate techniques.

Here are seven notable areas where the candidate (and you) can improve:

Thanking Throughout the case, as especially in the opening, he should have shown more appreciation for the time the interviewer spent with him.

Structured opening The candidate’s opening of the case feels unstructured. He could have improved it by not mixing the playback and clarification parts. You can learn to nail the case in a 3-minute start through this video on How to Open Any Case Perfectly .

Explicitness A lot of the candidate’s thought process remains in his head; in a case interview, it’s better to be as explicit as possible – draw your issue tree out and point to it as you speak; state your hypothesis when you move into a branch; when you receive data, acknowledge it out loud.

Avoiding silence The silence in his case performance is too long, including his timeout and various gaps in his speech; either ask for timeout (and keep it as short as possible) or think out loud to fill those gaps.

Proactivity The candidate relies too much on the interviewer (e.g: asking for data when it can easily be calculated); you don’t want to appear lazy before your interviewer, so avoid this.

Avoiding repeating mistakes Making one mistake twice is a big no-no in consulting interviews; one key part of the consulting skill set is the ability to learn, and repeating your mistakes (especially if the interviewer has pointed it out) makes you look like someone who doesn’t learn.

Note-taking Given the mistakes this candidate makes, he’s probably not taking his notes well. I can show you how to get it right if you watch this video on Case Interview Note-Taking .

Nonetheless, there are three good points you can learn from the candidate:

The candidate sums up what he’s covered and announces his upcoming approach at the start and at key points in the case – this is a very good habit that gives you a sense of direction and shows that you’re an organized person.

The candidate performs a “reality check” on whether his actions match the issue tree; in a case interview it’s easy to lose track of what you’re doing, so remember to do this every once in a while.

The candidate prompts the interviewer to give out more data than he asked for; if anything, this actually matches a habit of real consultants, and if you’re lucky, your interviewer may actually give out important pieces you haven’t thought of.

These are only part of the “ninja tips” taught In our Case Interview E2E Secrets Program – besides the math and business intuition for long-term development, a key feature is the instant-result tips and techniques for case interviews.

Once you’ve mastered them, you can nail any case they throw at you!

For more “quality” practice, let’s have a mock case interview with former consultants from McKinsey, BCG, Bain, Oliver Wyman, Strategy& and many other consulting firms. They will help you identify your problem areas and give you actionable feedback, making your preparation much easier and faster.

Hi! This is Kim and welcome to another performance in the Tips & Techniques part of our amazing End-to-end program. You are about to hear a really interesting performance.

There is a common Myth that Profitability cases are easier. Well, for beginners, that’s may make sense, but I would argue that Profitability cases can be really tricky and candidates without good foundation will make about the same level of mistakes regardless of type of cases given.

The profitability case we are about to watch will show that. It’s a very unconventional

Profitability. It started out like a typical one but getting more and more tricky toward the end.

The candidate is fairly good in term of business intuition, but the Tips & Techniques aspect needs a lot of fine tune! Now let’s go ahead and get started! 

It’s actually a little better to playback the case information and ask clarifications. The candidate does not distinguish between the two and do both at a same time. Also, the candidate was asking these clarifications in an unorganized and unstructured fashion. This is not something terrible, but could have been better, especially when this is the very first part of the case, where the crucial first impression is being formed.

My pitch would sound like this:

“That’s a very interesting problem and I am happy to get the chance to solve it. First of all let me tell you my understanding of the case context and key objectives. Then I would like to ask a few clarifying questions regarding a few terminology and concepts. Both of these are to make sure that I will be solving the right problem.

So here is my understanding of the case: The client is ABC. Here are some DEF facts about the situation we just talked about. And the key case question is XYZ.

Does that correctly and adequately summarize the case?”

Once the interviewer confirms, I would move to the clarification part as follows: “Now I would like to ask a few clarification questions. There are three of them: No 1, … No 2, … and No 3, …”

You may see above pitch as obvious but that’s a perfect example of how you should open any cases. Every details matters. We will point out those details in just a second. But before we do that, it’s actually very helpful if you can go back, listen carefully to the above pitch, and try to point out the great components yourselves. Only after that, go back to this point and learn it all together.

Alright, let’s break down the perfect opening.

First of all, you hear me say: “That’s a very interesting problem and I am happy to get a chance to solve it”. This seems trivial but very beneficial in multiple ways:

1. I bought myself a couple of seconds to calm down and get focused. 2. By nature, we as human unconsciously like those who give us compliments. Nothing better than opening the case with a modest compliment to the interviewer.

And (c) I showed my great attitude towards the case, which the interviewer would assume is the same for real future consulting business problems.

You should do that in your interviews too. Say it and accompany it with the best smile you can give. It shows that you are not afraid of any problems. In fact, you love them and you are always ready for them.

Secondly, I did what I refer to as the “map habit”, which is to always say what you are about to do and then do it. Just like somebody in the car showing the drivers the route before cruising on the road. The driver would love it. This is where I said: “Let me tell you my understanding of the case context and key objectives. Then ABC…”.

Third, right at the beginning of the case, I try to be crystal clear and easy to follow. I don’t let the interviewer confused between playing the case vs. asking clarification questions. I distinguish between the two really carefully. This habit probably doesn’t change the outcome of how the case goes that much, but it certainly significantly changes the impression the interviewer has of me.

Fourth, in playing back the case, each person would have a different way to re-phrase. But there are three buckets to always include:

1. Who is the client 2. The facts regarding the client and the situation and (c) The key question and the objective of the case.

Fifth, after playing the case context and objectives, I pause for a second and ALIGN with the interviewer: “Does it correctly and adequately summarize the case?”. This is a habit that every consulting manager loves for young consultants to do. Nobody wants first-year folks to spend weeks of passion and hard-work building an excel model that the team can’t use. This habit is extensively taught at McKinsey, Bain and BCG, so therefore interviewers would love somebody that exhibits this habit often in case interview.

Lastly, when asking clarification questions, you hear me number them very carefully to create the strong impression that I am very organized and structured. I said I have three clarifying questions. Then I number them as I go through each. No.1, No.2, and No.3.

Sometimes, during interviews it’s hard to know exactly how many items you are going to get. One way is to take timeout often to carefully plan your pitch. If this is not possible in certain situations, you may skip telling how many items you have; but you should definitely still number your question: No.1, No.2; and so on. 

Just a moment ago, the candidate actually exhibited a good habit. After going through his clarification questions, the candidate ended by asking the “is there anything else” question. In this case, I actually give out an important piece of data.

Though this is not very common as not every interviewer is that generous in giving out data. But this is a habit management consultants have to have every day when talking to experts, clients, or key stakeholders. The key is to get the most data and insights out of every interview and this is the type of open-ended question every consultant asks several times a day.

To show of this habit in a case interview is very good!

There are three things I would like you to pay attention to:

First, it took the candidate up to 72 seconds to “gather his thoughts”. This is a little too long in a case interview. I intentionally leave the 72 seconds of silence in the recording so you get an idea of how long that is in real situations. But it’s worth-noting here is not only that. While in some very complicated and weird cases, it’s ok to take that long to really think and gather ideas. In this case, the approach as proposed by the candidate is very simple. For this very approach, I think no more than 15 to 20 seconds should be used.

No.2, with that said, I have told I really like the fact that this candidate exhibits the “map” habit. Before going straight to the approach he draws the overall approach first.

No.3. You also see here that the candidate tried to align the approach with me by asking my thoughts on it. As I just said on the previous comment, this is a great habit to have. Not only does it help reduce chance of going into the wrong direction in case interviews, but it also creates a good impression. Consulting interviewers love people doing it often!

Here we see a not-really-bad response that for sure could be much better. The candidate was going into the first branch of the analysis which is Revenue. I would fix this in 3 aspects:

First, even though we just talked about the overall approach, it’s still better to briefly set up the issue tree first then clearly note that you are going into one branch.

Second, this is not a must, but I always try to make my hypothesis as explicitly clear as possible. Here the candidate just implicitly made a hypothesis that the problem is on the revenue side. The best way to show our hypothesis-driven mindset is to explicitly say it.

Third, you hear this a ton of times in our End-to-End program but I am going to repeat it again and again. It is better to show the habit of aligning here too. Don’t just go into revenue, before doing that, give the interviewer a chance to agree or to actually guide you to Cost.

So, summarizing the above insights, my pitch would sound something like this:

“So as we just discussed, a profit problem is either caused by revenue or by cost. Unless you would like to go into cost first, let’s hypothesize that the problem is on revenue side. I would like to look deeper into Revenue. Do we have any data on the revenue?”

And while saying this, you should literally draw an issue tree and point to each as you speak.

There is an interesting case interview tip I want to point out here. Notice how the candidate responds after receiving two data points from me. He went straight into the next question without at least acknowledging the data received and also without briefly analyzing it.

I am glad that the candidate makes this mistakes… well, not glad for him but for the greater audience of this program. I would like to introduce to you the perfect habit of what you should react and do every time you have any piece of data during case interviews. So three things you need to do:

Step 1: Say … that’s an interesting piece of data. This helps the interviewer acknowledge that you have received and understand the data. This also buys you a little time. And furthermore, it’s always a good thing to give out modest compliments to the interviewer.

Step 2: Describe the data, how it looks, is there any special noteworthy trend? In this case, we should point out that revenue actually grew by more than 50%.

Also notice here that I immediately quantified the difference in specific quantitative measurement (in this case, percentage). Saying revenue went up is good, but it’s great to be able to say revenue went up by more than 50%.

Step 3: Link the trend identified back to the original case question and the hypothesis you have. Does it prove, disprove, or open up new investigation to really test the hypothesis? In this case, this data piece actually opened up new investigating areas to test the hypothesis that the bottleneck is within revenue.

My sample pitch for this step 3 would sound like this: “It’s interesting that revenue went up quite a bit. However, to be able to fully reject our hypothesis on the revenue, I would like to compare our revenue to that of the competitors as well.”

Then only at this point, after going through 3 steps above, I ask for the competitors’ revenue like the candidate did.

Notice here that I ended up asking the same question the candidate did. This shows that the candidate does have a good intuition and thought process. It’s just that he did all of these implicitly on his head.

In consulting case interview, it’s always good to do everything as explicitly as possible. Not only is it easier to follow but it helps show your great thought process.

… the rest of the transcript is available in our End To End Case Interview

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Elevate your case interview skills with a well-rounded preparation package

Preparing for case interviews is a hard task when you only have 1 week, so the first part you need to learn during this time is fundamentals of case interview

Case interview in consulting is difficult with the passing rate is around 10%. This is because big consulting firms keep an extremely high recruitment standard

A case interview is where candidates is asked to solve a business problem. They are used by consulting firms to evaluate problem-solving skill & soft skills

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Case Interview Prep

The recruiting process for firms in the consulting industry often includes a combination of both behavioral interviews and case interviews. Case interviews provide additional opportunities to demonstrate your relevant skills and fit for the position. Significant preparation and practice is required to master the case interview. Work with your Career Coach to build a plan that works for you and that will have you ready by the time your case interview skills are put to the test.

Case Interviewing

What is it?  A type of interview where a candidate is given a business problem to analyze and provides recommendations on how to solve. Case interviews serve as a means to evaluate a candidate’s communication, analytical skills, and professionalism and are meant to model what a true client engagement might feel like. 

What types of companies use it as a part of the recruiting process?  Originated in the Consulting industry and is now a standard across most consulting firms. It’s also commonly utilized as a part of the interview process for product management and private equity roles as a supplement to technical questions. We are continually seeing case interviews being adopted by more and more types of companies.

2024 Mock Case Interview Coaches

Schedule with a Career Coach  Career Peer Leaders have stopped for the summer. They will be resumed in the fall.

General Outline of the Case Interview

Check out this Case Interview Prep Resources & Tracker  to track your practice and development. more_vert

Springboard to Consulting: Case Interviewing WorkshopWatch this three-part series covering all aspects of the case interview process.wustl.box.com

Case Interview Digital Resources

• Management Consulted : the world’s largest community on management consulting and resource to learn how to ace the case interview and build management consulting skills. The MC site includes comprehensive case interview content, drills, and a case interview bank. Check out Management Consulted’s robust  YouTube channel  as well.
• Wall Street Oasis :  Access Wall Street Oasis’ Master Consulting Case Interviews guide which includes an overview of the firms, case interview training, and a bank of sample cases.
• MConsulting Prep :  additional case interview samples from top consulting firms and case books from leading MBA programs.
• Career websites for the Consulting Firms:  don’t forget to tap into the rich resources the consulting firms, themselves, offer. The firms commonly offer you tips and tricks for preparing for their interview process and may give you deeper insights into their practice areas. It would be a mistake to gloss over!

In addition to the resources listed above, don’t forget to tap into  OlinConnect’s Research Tools  to find out which firms have hired our students in recent years. Stay up-to-date with real-time recruiting information updates by checking our  Consulting channel  on Microsoft Teams.

Case Interview Practice Resources

Oftentimes, the best place to start is with practice. You have several mock case interview resources including: 

• Career Coaches
• Career Peer Leaders- school year only
• MBA Peer Case Coaches
• Lenore Albee, Career Coach, Consulting
• Don’t forget about your peers! Practice with friends or classmates who are actively preparing for case interviews as well

Meeting with your Career Coach is a great starting point to develop your practice strategy and get an understanding of your case interview abilities relative to your peers.more_vert

CCE Career Coach AppointmentCareer coaching appointments are available to WashU students from all schools, including undergraduates, masters, PhDs, postdocs, and alumni.students.wustl.edu

2024 WashU Consulting Case Buddy Sign-upThe coordination with a case buddy is completely student-driven. Share your name and contact information and connect with peers to practice. Be up front with your level of commitment and proficiency to maintain fairness.docs.google.com

Popular Case Interview Prep Books

• Case in Point,  Marc Cosentino
• Crack the Case,  David Ohrval
• Case Interview Secrets,  Victor Cheng
• Interview Math, L ewis C. Lin
• Various MBA case books  such as Esade, Fuqua, Darden, etc.

Reading and learning about different case interview structures and approaches is helpful,  but nothing beats pure and simple live practice. 

BCG Case Interview Guide

The Boston Consulting Group , more commonly known as BCG, is a global strategy consulting firm with over $8bn in revenue and 21,000 employees worldwide. It is the second-largest consulting firm in the world by revenue and is part of the prestigious MBB group (McKinsey, Bain, BCG).

Every year BCG receives thousands of job applications from undergraduates, masters, and MBA students across the globe. Working at BCG is considered one of the most highly reputable graduate jobs in the market and therefore is incredibly competitive. The acceptance rate at BCG is well below 1% and being an exceptional student is rarely enough.  

The BCG case interview is the cornerstone of their application process and is a problem-based interview where candidates are required to solve a business problem with limited information.

• 1. What BCG is Looking for

With such an abundance of talent applying for jobs at BCG they are particular about the skills and personality traits they are looking for and they go beyond academic excellence. The type of work that BCG does on a daily basis for their clients requires a mix of quantitative ability, business acumen, and relationship building .

The traits they state they are looking for on their website are:

Problem-solving – The problems that BCG works with their clients on are complex and natural curiosity and problem-solving skills are critical.

Structured thinking – The complexity of problems means it is easy to get lost in insignificant details and so BCG is looking for structured thinkers that can take a pragmatic approach to the problem in order to ensure analysis is comprehensive. This is at the core of the BCG case interview .

Feedback incorporation – The culture of strategy consulting is one of high performance and so whilst consultants need to be confident they also need to have the humility required to take on feedback and change their opinion when the facts present the change.

Alternative thinking – The unique nature of the client problems that BCG consultants face means that often there is not a best practice approach to solving it that the team can take, therefore, alternative approaches are highly valued by BCG.

• 2. BCG Application Process

There are four steps to the BCG application process, resume and cover letter , online assessments , and first and then second-round interviews.

The first step of the BCG application process is the same as most other graduate jobs. Applications for BCG are straightforward and done online. They require a resume and a cover letter as well as some personal details. The cover letter needs to be unique to BCG and not a generic cover letter with the company name changed.

The online assessments consist of two different tests; the BCG potential test and the BCG Pymetrics game assessment . These are the filtering mechanisms that test candidates' quantitative skills and personality traits.

The first-round interviews are similar to those at Bain, are usually with a junior consultant (3-6 years experience), and are where you will first be tested with a case interview . You will typically have 2 interviews both starting with fit questions such as ‘ Why consulting? ’ or ‘Tell me about a time when…’ for the first 15 minutes and then followed by a 45-minute case interview .

The second-round interviews follow the same structure as the first-round interviews but are conducted by more senior members of the team , usually directors, and junior or senior partners. These consultants will be more rigorous in their assessment and provide a final hiring decision.

• 3. Types of Interviews

BCG use three types of interview across their network:  case interview, experience interview, and written case interview (also known as a structured case interview). The most common interview is the case interview but you need to be prepared for all three unless the recruiter states the type of interview you can expect.

• 3.1 Case Interview

BCG uses case interviews with the same weighting as other strategy consulting firms and typically a candidate will face four separate interviews before they receive a job offer . The case questions are based on real-life examples and the interviewers will have worked on the problem themselves, this allows them to provide context and data easily.

BCG is looking to test candidates’ ability to do the day-to-day work that will be required of them. On their website this covers:

Problem-solving

Alternative thinking

Structured analysis

Communication

Read our full guide on how to work through case interviews because these skills will be applicable for all case interviews.

• 3.2 Experience Interview

The experience interview is normally integrated into a case interview or written case interview with the first 15 minutes of a 60-minute interview devoted to the experience and fit questions. The questions are closely aligned to other job interview questions but strategy consultants will want to see a certain approach to answering them. The types of questions they will ask are:

• Why consulting?
• What is your greatest achievement and why?
• When have you led a team and how did you approach the role?
• What is a difficult decision you have made in the last year?
• What is an example of a time when you showed initiative and leadership?
• What do you most like to do in your free time?
• Why would you be a good fit for one of our project teams?

The key to these questions is to develop a structure that can be applied to all of them . By structuring your answer, you will show that even when discussing non-business-related topics you apply a considered approach to your answer.

• 3.3 Written (structured) Case Interview

The written case interview assesses the same attributes as the case interview and requires the same skills. However, instead of working through the case with the interviewer, you are given a large document pack (20-30 pages) that contains all the information required to answer the case. The information pack is dense and the time provided to read and digest it is small (c.10 minutes). This means that you are required to find the key pieces of information, interpret data quickly and structure a recommendation to present back to the interviewer under time pressure .

As with the case interview, there is no correct answer and the important part of your answer is the consideration of trade-offs for making decisions and comparing the possible strategic decisions the business in question can take . The interviewer will test your thinking and recommendations to see how robust your conclusions are and the steps you took to get there.

• 4. Case Interview

The consulting case interview is the cornerstone of every strategy consulting firm’s interview process due to the ability to replicate the problems and challenges of the work they do.

To score well in a BCG case interview, you must meet the criteria laid out above and you can do this following a structured approach to case interviews . The structure of a BCG case interview is as follows:

• Situation and problem
• Hypothesis validation
• Framework development
• Root cause analysis
• Mathematical calculation (sometimes)
• Creativity test (sometimes)
• Recommendation

At the start of the case, the interviewer will outline the context and the problem to be explored. An example might be:

“A high street retailer wants to cut costs by 30% in response to the Covid-19 pandemic, how would you approach this?”

You would then be expected to put forward an initial hypothesis on what the answer might be and explain your intention to prove or disprove it.

From there you will be expected to develop a framework to conduct your analysis and test it with the interviewer.

If your framework is MECE and you explore it correctly then you will find the root cause of the issue for the client (in this case where costs can be reduced) and begin calculations if relevant.

The creativity test is when the interviewer asks you for an alternative to your findings or recommendation e.g. “Okay, the client says they do not want to shut stores, how else can they reduce cost?” They may ask this more than once and it tests the candidates' ability to think of alternatives, even if their answer is appropriate.

Finally, you will be asked to provide a recommendation whereby you need to synthesize your findings and give a clear and concise proposal.

For more information on how to approach and solve case interviews, you can read our case interview guide.

• 5. Additional Tips

Case interviews are pressurized situations where your anxiety levels are heightened and you don’t have the safety net of notes or the internet to fall back on.

For in-person interviews, it is common that one of the questions will have a mathematical element or a market sizing question included . These require long maths calculations without a calculator. If you haven’t practiced long addition, multiplication, division, or subtraction recently then it is a good idea to do so. Being quick at maths shows your competent quantitative skills and reduces unnecessary pressure during the interview, increasing your overall performance.

We have published guidance and practice questions dedicated to case interview maths, that will give you an idea of what to expect.

As with maths, practicing case interviews is the best way to improve your performance. Through practice, you will begin to develop a robust approach that satisfies the structure and framework components of the case and you will recognize how to navigate the case successfully .

If you are applying to BCG then you are probably applying to other strategy consulting firms too, this practice will be relevant to all of the firms you apply to as they all use case interviews in their application process.

• Apply structure to everything

The key requirement of a candidate in a case interview is the application of structure, specifically with a MECE approach . As mentioned above, you can even apply structure to the FIT questions and it is recommended you do so.

An example answer to the question ‘walk me through your CV’ would be to segment your experience into 1) Experience relevant to consulting 2) Experience not relevant to consulting and then briefly cover the experience you have in each bucket. This shows you understand what consulting is and what is relevant and also a key skill of a consultant – structured thinking .

If you can demonstrate robust structured thinking in your interview, you will score highly.

Continue to Learn

Bain Case Interview Guide

Are you facing a Bain case interview? We have the ultimate preparation guide for you!

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The HBR Guide to Standing Out in an Interview

• HBR Editors

How to dazzle your interviewer — and what to do if the conversation goes sideways.

Job interviews can be daunting. In this video, author Amy Gallo culls advice from top experts in the field and shares strategic tips on how best to prepare, what to do, and what to say so that you can make a great impression in your next interview. She also offers advice on what to do if you notice your interviewer losing interest or you’ve stumbled over some answers. Mistakes happen. Just keep going and stay focused. Answer the current question as if it’s the first one. Even acknowledging the situation with a corrective statement like, “Am I giving you what you need? Is there other information I could give you?” and then following their cues can help dig you out of the current hole and get the conversation back on track.

There are many moving parts to a job interview, which go far beyond just questions and answers . This video, hosted by HBR’s Amy Gallo, offers a quick, all-in-one guide to acing an interview , from preparation to real-time strategies. Have interview-related topics we should cover or questions you want us to answer? Let us know here .

• This story is by the staff at Harvard Business Review.

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JSmol Viewer

Developing a culture of safety for sustainable development and public health in manufacturing companies—a case study.

1. Introduction

2. literature review, 3. materials and methods, 4.1. questionnaire survey, 4.2. questionnaire interview, 5. discussion, 6. conclusions.

• The company’s employees rate the level of safety culture highly, reflected in an average score of 4.59 out of 5.
• The highest scores were given to components such as “psychological, social, and organizational factors” (4.96), “safety management” (4.94), and “values” (4.84), highlighting the importance of training and management involvement.
• A high level of safety culture correlates with fewer workplace accidents and improved overall employee health.
• Increased awareness of occupational safety and employee engagement in safety activities contribute to a safer working environment.

Author Contributions

Institutional review board statement, informed consent statement, data availability statement, acknowledgments, conflicts of interest.

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Kabiesz, P.; Tutak, M. Developing a Culture of Safety for Sustainable Development and Public Health in Manufacturing Companies—A Case Study. Sustainability 2024 , 16 , 7557. https://doi.org/10.3390/su16177557

Kabiesz P, Tutak M. Developing a Culture of Safety for Sustainable Development and Public Health in Manufacturing Companies—A Case Study. Sustainability . 2024; 16(17):7557. https://doi.org/10.3390/su16177557

Kabiesz, Patrycja, and Magdalena Tutak. 2024. "Developing a Culture of Safety for Sustainable Development and Public Health in Manufacturing Companies—A Case Study" Sustainability 16, no. 17: 7557. https://doi.org/10.3390/su16177557

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