Author: Taylor Warfield, Former Bain Manager and interviewer

Last Updated: March 19, 2026

Private equity case interviews ask you to evaluate whether a PE firm should acquire a company. They follow a predictable structure, and once you know the 5-step method and the right framework, you can solve any PE case that comes your way.

 

In my experience coaching hundreds of candidates at Bain, private equity cases are actually one of the easiest case types to master. They show up regularly at McKinsey, BCG, Bain, and other top consulting firms because PE due diligence is a major revenue driver for these firms.

 

But first, a quick heads up:

 

McKinsey, BCG, Bain, and other top firms accept less than 1% of applicants every year. If you want to triple your chances of landing interviews and 8x your chances of passing them, watch my free 40-minute training.

 

What Is a Private Equity Case Interview?

 

A private equity case interview is a consulting interview where you evaluate whether a PE firm should acquire or invest in a target company. You play the role of a consultant conducting a commercial due diligence, and your job is to recommend whether the deal should go forward.

 

These cases are common at McKinsey, BCG, and Bain because PE due diligence is one of the most profitable types of consulting work. According to Bain's 2025 Global Private Equity Report, global PE deal value reached approximately $2 trillion, and consulting firms play a major role in evaluating these transactions.

 

There is an important distinction to understand. A private equity case interview in consulting is different from a case study at an actual PE firm. Here is how they compare:

 

	Consulting PE Case	PE Firm Case Study
Format	30-45 min live interview	1-3 hour modeling test or take-home
Focus	Strategic due diligence (market, company, risks)	Financial modeling (LBO, IRR, debt structure)
Math	Basic valuation, ROI, and market sizing	Full LBO model in Excel
Output	Verbal recommendation to interviewer	Investment memo and/or presentation

 

This article focuses on the consulting version of the PE case interview. If you are interviewing at a consulting firm like McKinsey, BCG, or Bain, this is the format you will encounter. You will not be asked to build an LBO model in Excel.

 

For a deeper look at related case types, see our guide on M&A case interviews.

 

Why Do Consulting Firms Give Private Equity Case Interviews?

 

Consulting firms give private equity case interviews because they closely simulate actual PE due diligence work. If you can solve a PE case well, you will likely succeed on real PE projects for the firm's clients.

 

PE work is extremely lucrative for consulting firms. According to industry estimates, firms typically charge 20-50% higher billing rates for private equity due diligence compared to other consulting engagements. This makes PE one of the most profitable practice areas at McKinsey, BCG, and Bain.

 

In a case interview, interviewers assess whether you have the core skills needed for consulting. PE cases specifically test:

 

• Structured thinking: Can you break down a complex acquisition decision into clear, logical components?

 

• Analytical problem solving: Can you interpret financial data, perform calculations, and draw sound conclusions?

 

• Business judgment: Do your recommendations make sense from both a strategic and financial perspective?

 

• Communication: Can you present a clear, confident investment recommendation?

 

Showing strong performance on a PE case signals that you can handle high-stakes, data-heavy projects. That makes you a highly attractive candidate. For more on what interviewers evaluate, see our guide on what interviewers look for in case interviews.

 

How Do You Solve a Private Equity Case Interview?

 

Every private equity case interview follows the same five steps. Once you have practiced a few PE cases, you will notice this pattern repeating. Having coached hundreds of candidates through PE cases at Bain, I can confirm that this 5-step process works for any PE case you will encounter.

 

Step 1: Understand the Goal of the Acquisition

 

The first step is to clarify what the PE firm is trying to achieve. Different goals require different analyses, so you need to understand the objective before you can evaluate whether the deal makes sense.

 

Common acquisition goals include:

 

• Growth: Expanding into new markets, launching new products, or increasing market share

 

• Operational improvement: Fixing inefficient processes to boost profitability

 

• Strategic portfolio fit: Adding a company that complements existing portfolio holdings

 

• Turnaround: Acquiring a distressed company at a discount and restructuring it

 

• Market timing: Taking advantage of low valuations during economic downturns or industry consolidation

 

Ask the interviewer directly: what is the PE firm hoping to achieve with this acquisition? This single question shapes your entire analysis.

 

Step 2: Build a Framework

 

Next, create a case interview framework to organize your due diligence. A good framework breaks the big question of "should the PE firm acquire this company?" into smaller, manageable pieces.

 

We cover the specific PE framework components in detail in the next section. For now, know that your framework should cover the market, the company, the PE firm's capabilities, synergies, financials, and risks.

 

If you want to master frameworks for all case types, my case interview course walks you through proven strategies in as little as 7 days.

 

Step 3: Develop a Hypothesis

 

Once you have a framework, form a case interview hypothesis. Based on the limited information you have so far, what is your initial take on whether the acquisition makes sense?

 

Your hypothesis does not need to be correct. It simply gives you a starting direction. Think of it as a strawman that you will either support or reject as you gather more information.

 

For example, you might say: "My initial hypothesis is that the acquisition is attractive because the target operates in a high-growth market with strong margins, but I want to verify the competitive dynamics and valuation before making a final recommendation."

 

Step 4: Analyze Data and Build Support

 

Now it is time to work through your framework. You will do both quantitative analysis (case math) and qualitative discussions with the interviewer to gather evidence for or against the acquisition.

 

Keep a running list of key insights as you work through each area. Write down the major takeaway from each question the interviewer asks. This will make your final recommendation much easier to deliver.

 

Pay special attention to any data that contradicts your hypothesis. Being willing to adjust your thinking based on new evidence shows strong analytical maturity.

 

Step 5: Deliver a Recommendation

 

The final step is to synthesize everything into a clear recommendation. Ask the interviewer for 30 seconds to collect your thoughts. Then deliver your recommendation using this structure:

 

• Lead with your answer: "I recommend the PE firm acquire this company" or "I recommend passing on this investment."

 

• Give 2-3 supporting reasons: Pull from the key insights you noted throughout the case.

 

• Mention risks and next steps: Briefly acknowledge what you would investigate further if you had more time.

 

Do not start your recommendation by summarizing all your work and saving the conclusion for the end. That approach buries the answer and confuses the interviewer. Lead with the recommendation, then support it.

 

What Is the Best Private Equity Case Interview Framework?

 

The framework you build is the single most important step in any private equity case interview. A strong framework makes the rest of the case straightforward. A weak framework makes everything harder.

 

While you should always customize your framework to the specific case, there are six components that apply to nearly every PE case. In my experience at Bain, almost every PE due diligence project touches on all six of these areas.

 

Component	What to Analyze	Key Questions
Market Attractiveness	Market size, growth rate, profitability, competitive intensity	Is this a market with long-term potential? Is it growing or declining?
Company Attractiveness	Revenue, margins, market share, competitive advantages, weaknesses	Is the company a strong performer? What differentiates it from competitors?
PE Firm Capabilities	Industry expertise, operational resources, network, track record	Can the PE firm actually improve this company? Do they have relevant experience?
Synergies	Revenue synergies, cost synergies with existing portfolio companies	Are there cross-selling or cost-sharing opportunities with other portfolio companies?
Financial Implications	Acquisition price, valuation multiples, expected ROI, payback period	Is the price fair? What return can the PE firm expect? How long to recoup the investment?
Risks	Market risks, execution risks, regulatory risks, competitive threats	What could go wrong? Can these risks be mitigated? How likely are they?

 

You do not need to include all six components in every case. Select the 3-5 that are most relevant based on the specific prompt and information you receive. The key is to customize your framework rather than memorizing it.

 

What Clarifying Questions Should You Ask in a Private Equity Case?

 

Asking the right clarifying questions at the start of a PE case sets you up for success. Based on having conducted and observed dozens of PE case interviews at Bain, here are the questions that separate strong candidates from average ones:

 

• "What is the PE firm's goal for this acquisition?" Growth, turnaround, portfolio synergies, or financial returns? This shapes your entire framework.

 

• "Is there a target return or hurdle rate?" PE firms typically target a 20-25% internal rate of return (IRR). Knowing the target helps you evaluate the deal's financials.

 

• "What is the expected holding period?" Most PE firms hold investments for 3-7 years. A shorter horizon changes the risk calculus significantly.

 

• "Does the PE firm have experience in this industry?" A healthcare-focused PE firm acquiring a tech company raises different questions than a tech-focused firm buying a tech company.

 

• "Are there other companies in the portfolio that could create synergies?" This tells you whether to weight the synergies component of your framework heavily or lightly.

 

You do not need to ask all five. Pick the 2-3 that are most critical for the specific case. The interviewer may not answer all of them, and that is perfectly fine. The questions themselves demonstrate investor-level thinking.

 

What Math Comes Up in Private Equity Case Interviews?

 

Private equity case interviews at consulting firms do not require you to build an LBO model. However, you should be comfortable with a few types of PE-specific math that commonly appear. About 70% of PE cases at top consulting firms include at least one quantitative question.

 

EBITDA Multiples and Valuation

 

The most common PE math question involves valuing a company using EBITDA multiples. The formula is simple:

 

Enterprise Value = EBITDA x Multiple

 

For example, if a company has $50 million in EBITDA and comparable companies trade at 8x EBITDA, the estimated enterprise value is $400 million. Industry average EBITDA multiples typically range from 6x to 12x depending on the sector, with technology companies often trading at higher multiples than manufacturing companies.

 

Return on Investment and Hurdle Rates

 

You may be asked to calculate whether an investment meets the PE firm's target return. A simplified ROI calculation works like this:

 

Annual ROI = Annual Profit / Purchase Price

 

If a PE firm buys a company for $200 million and the company generates $30 million in annual profit, the annual ROI is 15%. If the firm's hurdle rate is 20%, this deal would not meet the target without operational improvements.

 

Quick IRR Estimation

 

You will not need to calculate exact IRR in a consulting case interview, but you should know the Rule of 72: divide 72 by the annual return rate to estimate how many years it takes to double your investment.

 

At a 20% annual return, an investment roughly doubles in 3.6 years (72 / 20 = 3.6). At a 15% return, it takes about 4.8 years. This shortcut helps you quickly assess whether a deal's return timeline makes sense for a typical PE holding period of 5-7 years.

 

Private Equity Case Interview Example With Full Walkthrough

 

Let's walk through a complete PE case using all five steps so you can see how the method works in practice.

 

Prompt: Your client is a PE firm evaluating the acquisition of FreshPack, a mid-size organic food packaging company. FreshPack has $80 million in annual revenue and $12 million in EBITDA. The asking price is $96 million. Should the PE firm acquire FreshPack?

 

Step 1: Understand the Goal

 

You ask the interviewer: "What is the PE firm hoping to achieve with this acquisition?" The interviewer tells you the firm specializes in consumer goods and sees organic food packaging as a high-growth sector. Their target IRR is 20% over a 5-year holding period.

 

Step 2: Build a Framework

 

You structure your analysis around four areas: market attractiveness (is organic food packaging growing?), company performance (is FreshPack a strong player?), financial returns (does the deal math work?), and risks (what could go wrong?).

 

Step 3: Develop a Hypothesis

 

Based on the prompt, you hypothesize: "FreshPack is likely an attractive acquisition given the growth in organic food, but I need to verify the valuation and whether operational improvements can boost returns to meet the 20% target."

 

Step 4: Analyze the Data

 

The interviewer shares several data points as you work through your framework:

 

• The organic food packaging market is growing at 9% annually, compared to 2% for conventional food packaging

 

• FreshPack holds 15% market share in a fragmented market with no dominant player

 

• FreshPack's EBITDA margin is 15%, while best-in-class competitors achieve 20%

 

• The asking price of $96 million represents an 8x EBITDA multiple, in line with industry comparables

 

Now let's do the math. At the current $12 million EBITDA, the annual ROI would be $12M / $96M = 12.5%. That is below the 20% target. However, if the PE firm can improve EBITDA margins from 15% to 20% (matching best-in-class), EBITDA rises to $16 million on $80 million revenue. That brings the annual return to $16M / $96M = 16.7%.

 

Factor in the 9% market growth rate, and revenue could reach approximately $123 million in 5 years. At a 20% margin, EBITDA would be about $24.6 million. Selling at the same 8x multiple would yield an exit value of roughly $197 million on a $96 million investment, more than doubling the initial investment over 5 years.

 

Step 5: Deliver the Recommendation

 

"I recommend the PE firm acquire FreshPack. Three reasons support this recommendation. First, organic food packaging is growing at 9% annually, providing a strong market tailwind. Second, FreshPack has a 5-percentage-point margin gap versus best-in-class competitors, creating a clear value creation opportunity. Third, the math works: at the asking price of 8x EBITDA, the deal can generate returns exceeding the 20% target if the PE firm executes on operational improvements."

 

"Key risks to investigate further include whether FreshPack's margin gap is due to fixable inefficiencies or structural issues, and whether the organic food trend is sustainable over a 5-year horizon."

 

For more examples to practice with, see our collection of case interview examples and practice cases.

 

What Are Common Private Equity Case Interview Examples?

 

Below are eight example prompts that represent the types of PE cases you could encounter at McKinsey, BCG, Bain, and other top firms. Each one highlights a different acquisition rationale.

 

• Example 1 (Growth): A PE firm is evaluating a technology startup with a rapidly growing SaaS platform. The startup has 40% year-over-year revenue growth but is not yet profitable. Should the PE firm invest?

• Example 2 (Operational Improvement): A PE firm wants to acquire a manufacturing company with $200 million in revenue but EBITDA margins 8 percentage points below the industry average. Should they acquire it?

• Example 3 (Healthcare): A PE firm specializing in healthcare is considering a pharmaceutical company with a promising drug pipeline. Two drugs are in Phase 3 trials. Should they proceed?

• Example 4 (Consumer Goods): A PE firm is looking at a well-established retail brand with strong customer loyalty but declining foot traffic. Should they acquire this brand?

• Example 5 (Renewable Energy): A PE firm has identified a solar energy company with stable cash flows and long-term government contracts. What is the most the PE firm should bid?

• Example 6 (Turnaround): A PE firm specializing in distressed investing wants to acquire a struggling automotive supplier facing liquidity challenges. What price should they offer?

• Example 7 (Portfolio Synergy): A PE firm already owns three logistics companies and is considering acquiring a fourth to consolidate the market. Should they make this acquisition?

• Example 8 (Valuation): A PE firm is evaluating a software company with $25 million in EBITDA. Comparable companies trade at 10-12x EBITDA. How much should they bid, and what assumptions drive your answer?

 

Practice each of these by building a framework, forming a hypothesis, and sketching out the key analyses you would conduct. You can find more practice cases in our MBA casebooks collection.

 

What Are the Most Common Private Equity Case Interview Mistakes?

 

Having interviewed candidates at Bain for PE cases, I see the same mistakes repeated over and over. Avoiding these will immediately put you ahead of most candidates.

 

1. Using a generic framework instead of customizing. Many candidates present the same cookie-cutter framework regardless of the case specifics. If the prompt mentions the PE firm already has portfolio companies in the same industry, your framework must include synergies. If the target is distressed, your framework must emphasize turnaround potential and risk.

 

2. Skipping clarifying questions. Jumping straight into analysis without understanding the PE firm's goals is like solving the wrong problem. Always take 30 seconds to ask about objectives, target returns, and holding period.

 

3. Ignoring the financial return. Some candidates give a thorough strategic analysis but never address whether the deal actually generates the required return. PE firms exist to make money for their investors. Your recommendation must address the financial math.

 

4. Sitting on the fence. Ending with "it depends" or "I would need more data" is one of the fastest ways to fail a PE case. Make a clear recommendation and defend it. It is completely acceptable for your recommendation to include caveats, but you must take a position.

 

5. Forgetting to discuss risks. A recommendation without risk acknowledgment sounds naive. Always mention 1-2 key risks and how you would mitigate them or investigate further.

 

6. Saving the recommendation for last in your summary. Do not build up to your conclusion like a mystery novel. State your recommendation first, then give the supporting reasons. This mirrors how real consultants present to clients.

 

What Is the Difference Between a PE Case and an M&A Case Interview?

 

Private equity case interviews and M&A case interviews both involve evaluating an acquisition. However, there are important differences in how you approach each one.

 

Dimension	PE Case Interview	M&A Case Interview
Time Horizon	Long-term (5-10 years). PE firms hold investments before selling.	Short-term impact. The acquiring company expects immediate benefits.
Primary Goal	Financial return for investors (target 20-25% IRR).	Strategic value: market expansion, synergies, or competitive positioning.
Key Risks	Market risk, execution risk, exit risk.	Integration risk, cultural fit, regulatory compliance.
Exit Strategy	Critical. You may be asked about IPO, strategic sale, or secondary buyout options.	Rarely discussed. The acquiring company plans to keep the asset.
Value Creation	Operational improvements, revenue growth, financial engineering.	Revenue and cost synergies from combining two companies.

 

The biggest practical difference: in a PE case, you need to think about how the PE firm will eventually sell the company and whether the return meets their hurdle rate. In an M&A case, you focus more on whether the two companies fit together strategically.

 

What Key Private Equity Terms Should You Know?

 

You do not need deep finance knowledge for a consulting PE case interview, but familiarity with these terms will help you sound credible and follow the interviewer's questions more easily.

 

Term	Definition
EBITDA	Earnings Before Interest, Taxes, Depreciation, and Amortization. The most common measure of a company's operating profitability in PE.
EBITDA Multiple	A valuation metric: Enterprise Value divided by EBITDA. An 8x multiple means the company is valued at 8 times its annual EBITDA.
IRR	Internal Rate of Return. The annualized return on an investment. PE firms typically target 20-25% IRR.
Hurdle Rate	The minimum acceptable return for a PE firm to proceed with an investment. Usually 15-25%.
Due Diligence	The investigation process before making an acquisition. This is the work consulting firms are hired to do.
Exit Strategy	How the PE firm plans to sell the investment and realize returns. Common exits include IPO, sale to a strategic buyer, or secondary buyout.
Dry Powder	Uninvested capital that a PE firm has available for new deals. According to Preqin, global PE dry powder exceeded $2.5 trillion in 2025.
Rule of 72	A shortcut to estimate doubling time: divide 72 by the annual return percentage. At 20% return, money doubles in ~3.6 years.

 

Frequently Asked Questions

 

How long does a private equity case interview last?

 

A private equity case interview at a consulting firm typically lasts 30 to 45 minutes. This is the same length as any other consulting case interview. You will spend roughly 5 minutes on the case setup and clarifying questions, 25-30 minutes working through the analysis, and 5 minutes delivering your recommendation.

 

Do private equity case interviews require financial modeling?

 

No. In a consulting PE case interview, you will not build an LBO model or use Excel. You may need to do basic valuation math using EBITDA multiples, calculate simple ROI, or estimate whether a deal meets a target return. These calculations can all be done with pen and paper.

 

How many private equity cases should you practice?

 

Practicing 3-5 PE cases is usually enough to feel confident with the format. PE cases follow a predictable pattern, so the skills transfer quickly. Most candidates benefit more from practicing a variety of case types rather than doing 20 PE cases. Based on Glassdoor data, PE cases make up roughly 10-15% of consulting case interviews.

 

Can you fail a PE case but still get an offer?

 

Yes. Consulting firms evaluate your overall performance across multiple interview rounds, not just one case. If you struggle on one PE case but perform well on your other cases and fit interview, you can absolutely still receive an offer. Interviewers weigh your thinking process as heavily as your final answer.

 

What is the difference between a PE case interview and an LBO modeling test?

 

A PE case interview at a consulting firm is a live, conversational interview testing strategic thinking and business judgment. An LBO modeling test, given at actual PE firms, requires you to build a leveraged buyout model in Excel within 1-3 hours. Consulting interviews never require LBO modeling.

 

What industries come up most often in private equity case interviews?

 

Healthcare, technology, consumer goods, manufacturing, and energy are the most common industries in PE case interviews. However, you could get a case in virtually any sector. Focus on learning the framework rather than memorizing industry-specific knowledge. The 5-step process works regardless of industry.

 

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