The private equity case study interview, and how funds differ
How private equity case studies and modelling tests work at Blackstone, KKR, CVC and EQT: formats, what the investment memo needs, and common mistakes. 8 min readUpdated By the Prepper team
Private equity interviews add something banking interviews do not have: you are asked whether you would invest. The case study is where that judgement is tested, and it usually decides the offer.
The formats you will meet
- Paper LBO. Ten to fifteen minutes with pen and paper. Simple numbers, no calculator. Tests whether you know the mechanics cold.
- Timed Excel model. One to three hours from a short brief or a blank sheet. Tests speed, structure and error-checking.
- Take-home case. A confidential information memorandum, a few days, and a short investment memo or slides at the end, followed by a discussion.
How funds tend to differ
- Blackstone combines a modelling test (a paper LBO or a two to three hour Excel case) with a deal discussion and fit. Candidates report that investment judgement counts for more than raw speed.
- KKR uses a case study and an LBO model, and spends real time on the deals on your CV: why each was a good or bad investment.
- CVC processes in Europe often use a memorandum-based case plus a model, with sector questions on top.
- EQT asks about values and its thematic approach to investing alongside a modelling case.
What a good answer contains
- A clear recommendation in the first sentence: invest, pass, or invest at a lower price.
- Three or four reasons, each tied to a number: market growth, margin trend, cash conversion, entry multiple against peers.
- The return. Base case IRR and money multiple, and what drives it: growth, margin, deleveraging or multiple expansion.
- The risks that matter and how you would test them in due diligence.
- A price. The highest multiple at which the deal still meets the fund's return target.
Mistakes that cost offers
- Building a perfect model and running out of time for the recommendation.
- Listing every risk instead of ranking the two that could break the deal.
- Assuming multiple expansion to make the return work.
- Not checking that the balance sheet balances and cash never goes negative.
Practise the mechanics first with a paper LBO, then time yourself on full models in model prep.
Frequently asked questions
How long is a private equity modelling test?
Anything from a 10-minute paper LBO to a three-hour Excel build. Take-home cases can run over several days.
Do I need to recommend investing?
No. A well-argued pass, or an offer at a lower price, is a strong answer. What matters is that the recommendation follows from your numbers.
What return do private equity funds look for?
Large buyout funds commonly target around 20% IRR and roughly 2 to 2.5 times their money over a five-year hold, though targets vary by fund and strategy.
Keep reading
- Investment bankingThe investment banking interview guide: every stage, and how to prepare for it12 min read
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- Investment banking“Walk me through a DCF”: the model answer and the follow-ups9 min read
- Investment bankingHow to do a paper LBO, step by step9 min read