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

Click here to learn more about the McKinsey interview process.

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)
Written cases guide (by IGotAnOffer)
Digital transformation case with ex-Bain consultant
Bain case mock interview - profitability case- with ex-Bain manager (by IGotAnOffer)
Bain case mock interview - classic growth case with ex-Bain consultant (by IGotAnOffer)

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

5. How to practise case interviews

We've coached more than 15,000 people for interviews since 2018. There are essentially three activities you can do to practice case interviews. Here’s what we've learned about each of them.

5.1 Practise by yourself

Learning by yourself is an essential first step. We recommend you make full use of the free prep resources on our consulting blog. You can start with our complete Case Interview Prep guide.

If you prefer visual content (which can be really useful for explaining case interview techniques), watch the video below to see one of our coaches take you through how to ace a case interview, step by step.

Once you’re in command of the subject matter, you’ll want to practice answering cases. But by yourself, you can’t simulate thinking on your feet or the pressure of performing in front of a stranger. Plus, there are no unexpected follow-up questions and no feedback.

That’s why many candidates try to practice with friends or peers.

5.2 Practise with peers

If you have friends or peers who can do mock interviews with you, that's an option worth trying. It’s free, but be warned, you may come up against the following problems:

It’s hard to know if the feedback you get is accurate
They’re unlikely to have insider knowledge of interviews at your target company
On peer platforms, people often waste your time by not showing up

For those reasons, many candidates skip peer mock interviews and go straight to mock interviews with an expert.

5.3 Practise with experienced MBB interviewers

In our experience, practising real interviews with experts who can give you company-specific feedback makes a huge difference.

Find a consulting interview coach so you can:

Test yourself under real interview conditions
Get accurate feedback from a real expert
Build your confidence
Get company-specific insights
Learn how to tell the right stories, better.
Save time by focusing your preparation

Landing a job at a top consulting company often results in a $50,000 per year or more increase in total compensation. In our experience, three or four coaching sessions worth ~$500 will make a significant difference in your ability to land the job. That’s an ROI of 100x!

Click here to book case interview coaching with experienced MBB interviewers.