Management Consulting Case Interview
The MBB case interview plus the fit / Personal Experience Interview — structuring, market sizing, math and a crisp recommendation.
A free AI panel interview that questions you in Management Consulting’s style, follows up when an answer is thin, and returns a scored, evidence-backed report — seeded from your own practice history on Wrexa Edge.
The Management Consulting interview, in brief
Management-consulting recruiting at McKinsey, BCG, Bain and peers is built around the case interview: a live business problem you structure and solve with the interviewer, paired with a fit / behavioural round. Firms are testing a repeatable problem-solving toolkit — structuring an ambiguous problem into a clear framework, doing quick and accurate mental math, drawing insight from charts and data, and delivering a confident, top-down recommendation — rather than industry knowledge. Alongside the case, the fit round (at McKinsey, the Personal Experience Interview) probes leadership, personal impact, and drive. Some firms also add a gamified online assessment before the live rounds.
Applications are typically screened via resume and cover letter, often with a referral. Many candidates then complete an online assessment — most notably McKinsey's Solve, a roughly 60–70 minute gamified problem-solving test (ecosystem-building and data-interpretation scenarios) you must clear to reach live rounds. Live interviews come in two rounds of two to three interviews each; every interview combines a case with fit/behavioural questions. First rounds are usually with managers/associates, final rounds with partners. McKinsey runs interviewer-led cases (the interviewer drives the sequence of questions) and pairs each with a Personal Experience Interview deep-dive; BCG and Bain lean candidate-led (you drive the analysis), with Bain blending both and occasionally using a written case where you read a pack, structure it, and present.
Interview rounds
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Resume / cover-letter screen Application · referrals help
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Online assessment (e.g. McKinsey Solve) ~60–70 min · gamified
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First round 2–3 interviews · ~45 min each
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Final round 2–3 interviews · with partners
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Decision / offer Interviewer debrief
Key topics assessed
The defining round
The case interview is the defining round. You are given a business situation — a client with falling profits, a company weighing a new market, a possible acquisition, or a "how big is this market" estimate — and must solve it live. Start by clarifying the objective, then structure the problem into a clean, MECE issue tree (for profitability, decompose into revenue and cost drivers; for market entry, assess market attractiveness, competition, capabilities, and entry mode). Drive the analysis hypothesis-first, ask for the data you need, and interpret exhibits and charts as they arrive. Market-sizing questions test structured estimation — break the number into logical building blocks and reason from sensible assumptions rather than guessing. Throughout, you must do quick, accurate arithmetic (growth rates, margins, breakeven, payback) out loud and stay numerate under pressure. Close every case with a synthesis: a top-down, one-line recommendation supported by the two or three findings that matter, plus risks and next steps. McKinsey drives the case (interviewer-led); BCG and Bain more often let you steer (candidate-led) — the underlying skills are the same.
Behavioural round
The fit round — McKinsey's Personal Experience Interview (PEI) — is roughly half the evaluation and is far from a formality. The interviewer picks a dimension (typically personal impact / persuasion, entrepreneurial drive / achievement, or leadership) and drills deeply into one specific story: what the situation was, what you personally did, the obstacles, and the outcome. Answers should be structured (situation-action-result), true, and rich in your own actions and reflection. Firms are assessing leadership, drive, resilience, and the ability to influence others — the raw material of a consultant.
Representative question categories
Patterns in Management Consulting’s style — not verbatim proprietary questions.
- ProfitabilityA client's profits are declining — diagnose why by decomposing revenue and cost drivers.
- Market entryShould our client enter a new market or launch a new product? How would you decide?
- Market sizingEstimate the market size for a product in a given country from first principles.
- M&A / acquisitionShould the client acquire this target — is it attractive, and does it fit strategically?
- Exhibit interpretationRead this chart — what does it tell you and what would you do next?
- Fit / PEITell me about a time you led a team, persuaded someone, or drove a difficult result.
How to prepare
Do
- Structure before you solve — take a few seconds, then present a clean, MECE framework tailored to the specific question rather than a memorised template.
- Narrate your math and state assumptions on market-sizing; accuracy and a logical path matter more than the final number.
- Stay hypothesis-driven and lead the case where the format allows (BCG/Bain), while responding crisply to prompts at McKinsey.
- Prepare two or three PEI stories with real depth — your specific actions, obstacles, and reflection — mapped to leadership, impact, and drive.
Avoid
- Forcing a generic framework onto the case instead of adapting your structure to the actual problem.
- Doing math silently or fumbling percentages and growth rates — numeracy under pressure is directly scored.
- Ending without a clear, top-down recommendation, or treating the fit/PEI round as a throwaway when it is about half the assessment.
Who can apply
Open to strong students and graduates from any degree (not just business or economics) — undergraduates, MBAs, and increasingly PhDs and other "advanced-degree" candidates. Firms look for top academics, leadership and impact on the resume, and demonstrated problem-solving; a referral helps at the screening stage. There is no single GPA cutoff, and non-traditional backgrounds are actively recruited.
Management Consulting interview FAQ
- What types of cases do McKinsey, BCG and Bain ask?
- The most common are profitability cases, market-entry cases, and market-sizing/estimation questions, with M&A and operations cases also appearing. First rounds lean on the common types; the skills tested — structuring, math, insight, recommendation — are consistent across firms.
- What is the difference between interviewer-led and candidate-led cases?
- McKinsey uses interviewer-led cases: the interviewer drives the sequence and you answer discrete questions. BCG and Bain lean candidate-led: you drive the analysis and decide what to investigate next. Bain often blends both. The underlying problem-solving skills are the same.
- What is the McKinsey Solve assessment?
- Solve (the Problem Solving Game) is a gamified online test, typically about 60–70 minutes, with interactive tasks such as ecosystem-building and data-interpretation scenarios. It screens problem-solving ability and must be passed before you are invited to live case interviews.
- What is the Personal Experience Interview (PEI)?
- The PEI is McKinsey's structured behavioural round — a roughly 15–20 minute deep-dive into one story along a dimension like personal impact, entrepreneurial drive, or leadership. It accounts for about half the evaluation, so it should be prepared as rigorously as the case.
Practise now
Rehearse the full loop with an AI panel modelled on Management Consulting’s process, in text, voice, or video.
Other company interviews
Verified from
- McKinsey — Interviewing (careers)
- CaseCoach — How the MBB interviews differ
- IGotAnOffer — Case interview examples (McKinsey, BCG, Bain)
Wrexa Edge is an independent exam-prep platform and is not affiliated with, authorised by, or endorsed by Management Consulting. This guide is based on publicly documented interview practice; it does not reproduce any employer’s internal rubric or question bank, and it does not predict a hiring outcome.