Assessment Centres in Finance: What Happens and How to Prepare

Sep 24

12 min read

A friend's younger brother, a junior at Michigan spending his spring semester in London, forwarded me an email last year with the subject line "Invitation to Assessment Centre." He'd applied to a bank's London summer program on a whim, and now he had a full day of something he'd never heard of and one question for me: is this a test or an interview?

Both, and neither, and it's closer to what he'd already prepared for than he thought. I'm Stephen Turban, founder of WSG. The McKinsey final round I went through was built the same way: a full day, several interviewers, one debrief where they compared notes. American banks don't use the words "assessment centre," but the superday runs on the same logic, and once you see the logic, the whole day gets easier to prepare for.

This guide covers what happens at an assessment centre in finance hour by hour, how the US superday compares, what each exercise is actually scoring, and how to prepare for all of it in the two weeks you'll usually get.

In US recruiting the closest equivalent to an assessment centre is the superday, and these JP Morgan superday tips here carry over well to the back-to-back interviews and group tasks described above. Most centres also include a competency interview, so work through the 30 behavioral questions here before the day itself.

What is an assessment centre in finance?

An assessment centre is a half-day or full-day final-round event where a bank evaluates a group of candidates at once, using several exercises instead of interviews alone: a group exercise, a case study or presentation, online tests, two or three interviews, and usually a networking lunch. Banks in London, Hong Kong, and the rest of Europe, the Middle East and Africa use it as the standard final round for internships and graduate roles. An assessment centre tests how you work as well as what you know, which is why it includes a group exercise and a case.

Do US banks use assessment centres?

Not by that name. The US final round is the superday: a half day or full day of back-to-back one-on-one and two-on-one interviews, typically four to six of them, at the bank's office. Some elite boutiques and middle-market banks may add a short modeling test, written case, or case-study exercise to the interview process, particularly in later rounds. However, there is no standardized U.S. Superday format: many banks still conduct Superdays primarily through a series of technical and behavioral interviews, while others may incorporate a modeling or case component depending on the firm and recruiting cycle. For example, current interview guides describe Goldman Sachs' U.S. Superday as interview-based without a case or group exercise, while other recruiting resources identify case-study and modeling exercises at firms including Evercore, Lazard, Centerview, Moelis, and some middle-market banks. The scoring works the same way at both: multiple evaluators grade you independently, then meet to compare notes.

1. The superday and the assessment centre are the same idea with different exercises

Here's what both formats are doing. A first-round interview is one person's opinion formed in 30 minutes, and banks know that's noisy. So for the final decision they put a candidate in front of several people over several hours, have each one score the same set of qualities (technical ability, communication, judgment under pressure, fit with the team), and then hold a debrief where an interviewer who said "strong yes" has to defend it against one who said "no."

The US superday gets that sample by stacking interviews; the assessment centre gets it by adding exercises that expose behaviors an interview can't. Those behaviors are how you act in a group with no leader, whether you can read twenty pages of material and make a call in 45 minutes, whether you're the same person at lunch that you were in the interview room.

The reason London banks lean on the broader format, as the Mergers & Inquisitions guide to assessment centers points out, is that their applicant pool comes from dozens of countries and education systems, and the exercises give them a way to compare a candidate from Bocconi with one from LSE on the same task.

Both formats exist so that no single interviewer can get you hired or rejected, and preparing for that debrief is the whole game.

2. What happens at an assessment centre, hour by hour

A typical London investment banking assessment centre for a summer analyst program runs four to six hours with 20 to 40 candidates in the building. The order of the day varies by bank, but the pieces don't.

Arrival and welcome, 15 to 30 minutes. A recruiter explains the day. You're being watched from the moment you walk in.
Online assessments, typically around 30–40 minutes. These can include numerical reasoning, situational judgment, and other cognitive or behavioral assessments. Some banks may use a supervised or repeated assessment later in the process to validate earlier results, but this is not a universal feature of current London banking assessment centres and varies by bank and programme.
Group exercise, 45 to 60 minutes. Five or six candidates get a business problem, a pack of information, and a deadline to present a joint recommendation to observers who say nothing and write constantly. Section 3.
Individual case study, 45 to 90 minutes. You read a company profile or a short deal scenario, do some arithmetic, and present a recommendation to one or two bankers who then push on it. Section 4.
Interviews, two or three, 30 to 45 minutes each. One is usually technical and one is usually fit; senior bankers cross-check your story against what you told the last person. Section 5.
Lunch or a networking session, 30 to 60 minutes. Scored. Section 7.

The US superday version, for comparison, is four to six interviews of 30 minutes each, often two interviewers per room, sometimes with a short break and a lunch or coffee with analysts in the middle. Some firms send a modeling test or case in advance or run one on the day.

The assessment centre has more moving parts than a superday, but every part scores the same four things: technical ability, communication, judgment, and fit.

3. The group exercise scores your behavior, not your answer

The exercise usually looks like this. Your group gets a scenario: a client is weighing three acquisition targets, or deciding how to fund an expansion, or choosing between two capital structures. Each person may get a different piece of the information pack. You have 40 minutes to agree on a recommendation and five minutes to present it. Two or three observers sit around the edge of the room with scoring sheets.

Almost nobody fails the group exercise because their group picked the wrong target; candidates fail it because of how they behaved for 40 minutes. The observers are marking things like:

Did you contribute regularly without dominating? One substantive comment every three or four minutes is the rhythm that scores well. Silence for ten minutes and then a monologue does not.
Did you build on other people's points or ignore them? "Building on what Priya said about the margin gap, that also affects the financing" is worth more than the best point made in isolation.
Did you do the unglamorous jobs? Keeping time, taking notes, and pulling the final presentation together are the roles most candidates avoid, and they're the ones observers notice, because that's what an analyst does all day.
Did you use people's names, listen, and stay calm when someone disagreed?
Did you help the group reach a decision on time? A group that runs out of time and has no recommendation fails together.

Never interrupt. Never be negative about a teammate's idea in front of observers. Never try to "win" the exercise. The candidate who visibly steers the group toward a decision while making everyone else look competent is the one who gets the offer.

In the group exercise, the observers are scoring how you'd behave on a deal team at 2 a.m., and the recommendation your group lands on barely matters.

4. The case study is back-of-envelope math plus a decision you can defend

The individual case is where the assessment centre gets technical. Formats vary: a two-page company profile and the question "would you recommend acquiring this business," a short pitch scenario, or, at some banks, a modeling test in Excel. The arithmetic in a case study is simple by design; what's being tested is whether you can structure a problem, do the math without a calculator, and commit to a recommendation.

Take the acquisition version. A workable structure in 45 minutes:

Strategic rationale first. Why would the client want this? Growth, cost synergies, a capability it lacks, a geography it wants. Pick the two that the materials support.
Sanity-check the price. If the pack gives EBITDA of $50 million and comparable companies trade at 8 to 10 times, the business is worth roughly $400 to $500 million. If the asking price is $700 million, say so and say what synergies would need to be worth to justify it.
Financing. Can the client pay in cash, does it need to borrow, would it use stock? One sentence on what that does to the client's leverage.
Risks. Two or three specific ones from the materials: customer concentration, a key contract expiring, integration in a different country.
Recommendation. Say yes, no, or yes at a lower price in the first sentence of your presentation, not the last.

Then the bankers push. "What if the synergies don't show up?" "The CEO says the multiple is fair, what do you tell him?" Hold your view if the math supports it and move if they show you something you missed. The score comes from how you handle the pushback as much as from the recommendation.

A case study answer that opens with the recommendation and shows the math on one page beats a longer answer that gets to the point at the end.

5. The interviews test consistency, because every interviewer has notes from the last one

By the time you reach the interview rooms at an assessment centre (or the third room at a superday), the bankers have your application, your first-round notes, and, increasingly, a summary of what you said an hour ago. Senior interviewers use that to cross-check. If you told the first interviewer you want the industrials group because of a specific deal and tell the second you're flexible on group, both of them write it down, and it comes up in the debrief.

So the preparation is the same as for any final round, with one extra rule: decide your story and tell the same one all day.

Your three reasons for banking, in the same order every time.
Your two reasons for this bank, with a named contact or a named deal.
Three stories that cover leadership, failure, and conflict, each with a number in it.
The technicals: the three statements, the $10 depreciation walk, enterprise versus equity value, the valuation methods and when each one is high or low, and one deal you can discuss for five minutes.

For London programs, expect significant emphasis on motivation, commercial awareness, and financial markets for example, being able to discuss a recent transaction or market development and explain why it matters. Technical questions still feature prominently at many major banks, however, so it is safer not to assume that London interviews are materially less technical than U.S. Superdays. Current London processes vary by bank: J.P. Morgan describes a mix of behavioral, commercial-awareness, and technical interviews, while Lazard explicitly says its final-round interviews cover financial markets, world affairs, and technical financial questions.

The practical takeaway: prepare for both. Know your technical fundamentals, but be especially ready to explain why a market event, company, or transaction matters to clients and the bank.

Interviewers at a final round compare notes, so the safest story is the one you tell identically to all of them.

6. The tests and the pre-round screens are easier to prepare for than students think

London banks screen with online numerical, verbal, and situational judgment tests before the assessment centre, and often repeat a version of them on the day. US banks lean on recorded video interviews and short online assessments before the first round. Both kinds of screen reward practice, and both are the stage where most candidates get cut, because most candidates don't practice.

Numerical reasoning tests are timed data-interpretation questions: read a chart, compute a percentage change, pick the answer. The math is percentages, ratios, and reading tables quickly. Major London banks use different assessment providers and can change formats by bank, program, and recruiting cycle. SHL is used in some major banking processes, including reported J.P. Morgan programs, while other banks use different providers or proprietary assessments. Lazard, for example, currently describes a timed aptitude assessment but does not publicly name its provider.

Situational judgment tests present workplace scenarios and ask what you'd do. The right answers on a situational judgment test are consistently the ones where you communicate early, escalate a real problem to the person responsible, and don't cut corners. Read the bank's stated values before the test; the questions are written to them.

For recorded video interviews, the standard is a 30 to 60 second response with the answer in the first sentence. Record yourself on your phone, watch it back once, and fix the things you notice.

Screening tests reward timed practice more than any other part of the process, and they're where the largest share of applicants gets cut.

7. Lunch is scored, and so is the hallway

Every recruiter at every assessment centre and superday will tell candidates that the lunch is informal. Treat the claim that lunch is informal as untrue. The analysts and associates you eat with fill in feedback forms, and "seemed disengaged at lunch" or "spent the whole time talking about comp" has ended candidacies that were otherwise fine.

The behavior that works: ask the analysts about their work, remember their names, keep the questions to things you can't Google (what surprised them about the group, what a good summer analyst did last year), and don't check your phone. Don't ask about pay, hours, or exit opportunities, and don't drink if alcohol is offered, even if everyone else does.

The same rule applies to the recruiter who walks you to the room, the receptionist, and the candidate next to you in the waiting area. Treating other candidates as competition to be managed, or as an audience, gets noticed.

Anyone who works at the bank can submit feedback on you, and the informal parts of the day are where candidates relax into mistakes.

8. What decides the offer: the debrief, and the numbers behind it

After the last exercise, the interviewers and observers meet with recruiting. Each candidate's scores go on a board. The conversation is about the candidates in the middle: the ones with a strong technical score and a weak group exercise, or a glowing fit interview and a flat case. A consistent "yes" across four evaluators is an offer, and a single strong "no" from a senior banker usually isn't survivable. That's why the consistency in section 5 matters so much.

Offer rates at both formats generally land in a similar range, although there is no reliable public data tracking conversion rates across banks and recruiting cycles. A commonly cited rule of thumb is that roughly 20–40% of candidates at a typical assessment centre or Superday receive offers, with the actual rate varying substantially by bank, year, office, and number of seats available. The odds at a final round are therefore meaningfully better than at any earlier stage but still far from a sure thing, despite how easy it can be to feel otherwise once you receive the invitation.

By the time you're in the room, the bank wants to hire you, and the debrief is about whether anyone found a reason not to.

9. How to prepare in the two weeks before the day

Most invitations arrive one to three weeks out. A plan that fits:

Days 1 and 2: lock your story. Write your three reasons for banking, two for the bank, and three stories. Say them out loud until they're identical each time.
Days 3 to 5: technicals. Run the three-statement questions daily, redo enterprise versus equity value, prepare one deal. For a London program, add a commercial awareness habit: one market story a day with a one-line "why it matters to a bank."
Days 6 and 7: timed tests. Two numerical reasoning sets under the clock, one situational judgment set, and, for US programs, two recorded video answers.
Days 8 and 9: case practice. Take any public company, give yourself 45 minutes and a two-page summary, and produce a one-page acquisition recommendation with a valuation sanity check. Do it twice.
Days 10 and 11: group exercise practice. The group exercise is the hard one to rehearse alone, and it's the one most candidates skip. Get three or four friends who are also recruiting, give the group a made-up scenario, set a 40-minute timer, and have one person observe and score using the behaviors in section 3. Switch roles.
Days 12 and 13: mock the full day. Two interviews back to back with different people, then a case, then a conversation over coffee with someone who'll give you honest feedback on how you came across.
Day 14: logistics. Route, clothes, printed copies of your resume, the names of the people you've met at the bank, an early night.

Two weeks is enough if every day has one task, and the group exercise is the one most candidates skip because it's awkward to rehearse.

10. Say this, not that

In the group exercise, when someone makes a point you disagree with

Don't say: "That's wrong, because..."

Say: "I see it a bit differently. If we look at the margin data on page three, it suggests..."

When a banker pushes back on your case recommendation

Don't say: "You're right, I'd change my answer." (Unless they showed you something you missed.)

Say: "That's a fair risk. Even with lower synergies, the deal clears the client's hurdle rate at anything under $600 million, so I'd hold the recommendation but negotiate the price."

At lunch, when an analyst asks what you want to know

Don't say: "What's the bonus like?" or "How many hours do you actually work?"

Say: "What did the summer analyst who got the return offer last year do that the others didn't?"

When an interviewer asks why this bank

Don't say: "Your brand and your culture."

Say: "I spoke with an associate in your consumer group in March, and the way she described running a process with two juniors on the team is the kind of responsibility I want early."

My friend's brother went through the London assessment centre in April. He said afterward that the group exercise was the strangest hour of his recruiting year and the case was the most fun. He got the offer, and the thing he credited most was having done two full mock days with friends the week before, because by the real one nothing surprised him. Assessment centres and superdays reward the candidate who has already lived through a version of the day, so build that version yourself before the bank does.