Landing an interview at McKinsey, BCG, Bain or one of the other top strategy consulting firms guarantees nothing: the final stage, often a full day of exercises, remains the most selective. Unlike a typical banking assessment center, a strategy consulting one relies almost entirely on a single central exercise - the case study - delivered across several formats. Understanding this mechanic completely changes how you prepare.
What is a consulting firm assessment center
At strategy consulting firms, the assessment center - sometimes called a "final round" or interview day - packs several back-to-back interviews into a single day, each built around a business case to solve in real time in front of a consultant or manager. The format differs sharply from a banking assessment center: fewer group exercises, but a sequence of two to four one-on-one interviews, each combining a case interview and a Personal Experience Interview (PEI).
The three so-called MBB firms - McKinsey, BCG, Bain - share a common evaluation foundation: structured thinking, calculation speed under time pressure, business judgment, and clarity of the final synthesis. The recruitment process described on McKinsey France's official careers page 🔗 follows this pattern: several interview rounds, each made up of a case study and a PEI, conducted by consultants or managers at different seniority levels.
The selectivity of this format is extreme - on the order of 1% of applications resulting in an offer according to several consulting-prep firms - which is why methodical preparation makes a real difference, unlike a standard interview where experience alone can sometimes carry a candidate through.
💡 Go further: our overview of banking assessment centers, group exercises and role plays lets you compare this format to the one used in investment banking and audit, which differs noticeably.
The typical exercises: case, group exercise, interview
A consulting firm's interview day typically combines several assessment formats:
The individual case interview - the core of the process. A consultant presents a real or realistic business situation (a company losing market share, an investment decision, a strategy for entering a new market) and evaluates your reasoning in real time, out loud, over 30 to 45 minutes.
The Personal Experience Interview (PEI) - an in-depth motivational interview that explores your past experiences (leadership, teamwork, handling a difficult situation) using a structured method close to STAR (Situation, Task, Action, Result).
A written or digital test - increasingly common ahead of or during the final day: a timed cognitive test (the most recent format at BCG Paris, for instance, combines logical, numerical and verbal questions under a strict time limit), or a written case to prepare alone before presenting it back.
The group exercise, rarer in pure strategy consulting than in banking, but present at some generalist firms or during early "insight days" organized ahead of the formal process.
📊 Go further: our guide on strategy consulting recruitment and case interviews details the step-by-step method for solving a case.
How to prepare for each exercise
For the case interview: the most effective preparation combines three angles - mastering a reusable structuring framework (profitability, investment feasibility, market entry), practicing out loud with a partner rather than alone on a written case, and working on mental calculation speed, since a consulting panel penalizes slowness far more than a small rounding error.
For the PEI: prepare three or four solid personal stories (an owned failure, a successful leadership moment, a managed conflict, a goal achieved against the odds) that you can adapt to different questions, rather than improvising on the spot. Interviewers systematically check the consistency between these stories and your resume.
For the cognitive or digital test: these tests are best prepared like a standard exam, through repeated practice of timed exercises of the same type - execution speed improves markedly with practice, contrary to what many candidates initially assume.
⚠️ Watch out: before the big day, our article on preparing for the strategy consulting motivational interview details the most frequently asked PEI questions and the pitfalls to avoid.
Mistakes that hurt candidates
Several pitfalls come up repeatedly among consulting assessment center candidates, even among academically very strong profiles:
- Jumping into calculations before structuring the problem: a consulting panel values a candidate who takes 30 seconds to lay out a clear framework far more than one who calculates fast but in a disorganized way
- Reciting a memorized framework without adapting it to the case at hand: consulting interviewers immediately spot reasoning that's applied by rote rather than built for the specific case
- Neglecting the PEI in favor of case-only practice: many candidates who are strong on cases fail on a poorly prepared PEI, even though both exercises count equally
- Failing to think out loud: staying silent for several minutes of calculation, without sharing your reasoning as you go, deprives the evaluator of exactly what they're trying to observe
- Ignoring the "fit" dimension of the day: beyond the graded exercises, behavior during breaks and transitions between interviews is often observed informally
Day-of checklist
- Three to four structuring frameworks mastered and adaptable (not recited word for word)
- Three to four personal stories prepared for the PEI, consistent with your submitted resume
- Recent practice out loud on at least 5 cases with a partner
- Up-to-date general knowledge of the targeted firm's sector and, if possible, recent economic news
- A good night's sleep before a day that often runs 4 to 6 hours straight
The same principle applies well before assessment day: most consulting firms filter applications through an ATS before a recruiter ever reads the resume. FinanceCV takes that formatting burden off your hands: your background stays front and center, the presentation stays clean and consistent, and the document produced is built to be read correctly by these tracking systems - a factor that matters just as much as your preparation for the day's cases.
Ready to structure your consulting application? Use our free generator to get a professional resume in just a few minutes.