Fit interview questions in consulting fall into four recurring families: motivation questions about why you want this work and this firm, behavioural questions asking for specific past experiences, self-assessment questions about how you see your own strengths and limits, and the questions you ask at the end. Every firm draws from these four. The wording varies; the families do not.
Recognising the family is more useful than memorising answers, because it tells you what the question is testing and therefore what shape the answer needs. A rehearsed answer to a slightly different question is worse than a considered answer built on the spot from the right raw material.
Family one: motivation
“Why consulting?”
The test is whether your reason is specific to consulting or would apply equally to investment banking, corporate strategy or a graduate analyst programme anywhere. Most answers fail this test without the candidate noticing.
“I enjoy solving complex problems” describes most professional work. “I want to learn quickly” describes any good first job. Neither is wrong; neither distinguishes.
Reasons that are genuinely consulting-specific:
- The variety of problems within a short period. Three or four different industries in a year is unusual and is a real feature of the work.
- Working on a client’s decision rather than executing it. The consultant’s product is a recommendation, and the accountability structure that follows from that is distinctive.
- The apprenticeship structure. Working directly with people much more senior, with feedback delivered at a frequency few other environments provide.
- Exposure to how decisions actually get made in large organisations, from the inside, repeatedly, across different organisations.
Whichever you choose, attach an experience to it. A candidate who says they want variety and then describes a term where they took on three unrelated projects and found the switching energising has evidence. One who asserts the preference has a claim.
Be prepared for the follow-up that tests the reason: “Corporate strategy teams also work across business units — why not that?” A reason you have actually thought about survives this. A reason assembled for the interview does not.
“Why this firm?”
The test is evidence of contact. Every firm’s website describes collaboration, impact and exceptional people; an answer assembled from that material is recognisable and is the most common weak answer in the round.
The strongest answers could only be held by someone who has spoken to people at the firm:
“I spoke to two people in your Toronto office, and both described the same thing — that engagement managers here run their own workstreams much earlier than they expected. One of them was leading client meetings alone in her second year. That is the part I want, and it was specific enough that I believed it.”
That answer names a source, describes something concrete, and explains why it matters to the candidate. It also cannot be given by someone who has not done the work.
If you have not been able to speak to anyone, the next best route is specificity about the work rather than the culture — a practice area, a published piece of research you actually read and disagreed with, an office’s particular client base. Concrete and moderate beats enthusiastic and generic.
“Why this office?”
Asked more often than candidates expect, particularly outside the largest offices. A specific reason — the sector concentration, a personal connection to the city, language — is straightforwardly better than a general one. For Canadian offices in particular, office choice carries real weight, because the smaller offices run few enough intakes to notice.
Family two: behavioural
These are the “tell me about a time when” questions. They require a story bank rather than a set of answers, because the same experience serves several questions and the wording varies constantly.
The recurring prompts:
| Question | What it is really testing |
|---|---|
| A time you led a team | Whether your role is separable from the group’s |
| A time you disagreed with someone | Whether you can hold a position and still work with them |
| A time you failed | Whether you can be honest about being wrong |
| A time you influenced someone without authority | Persuasion, which is most of consulting |
| A time you worked with someone difficult | Whether you attribute the difficulty to them or examine your part |
| A time you had to decide without enough information | Comfort with the actual conditions of the job |
Building and structuring that bank is covered in detail in the guide to behavioural interviews in consulting, and McKinsey’s version of this round is structured differently and probes far deeper.
One point specific to this family: the follow-up matters more than the story. Every account gets probed, and the probing is where the assessment happens.
Family three: self-assessment
“What is your greatest weakness?”
The test is self-knowledge, not modesty and not confession. The failure modes are well known to interviewers: the disguised strength (perfectionism, working too hard, caring too much), and the disqualifying admission (poor with numbers, dislike presenting).
A working answer has three parts — the real limitation, its concrete cost, and what you have done about it with evidence:
“I move to a recommendation too early. On a project last year I had settled on the answer by the second week, and I ran the remaining analysis to confirm it rather than to test it — we missed a segment that would have changed the emphasis. Since then I write down what evidence would prove me wrong before I start, and I ask someone else to argue the other side at the halfway point. It has caught two things this year that I would otherwise have talked past.”
That answer is specific, costly, and answered. It is also a genuine risk in consulting work, which makes it credible rather than safe.
“What is your greatest strength?”
Easier, and usually under-answered. Pick one, name it precisely, and evidence it. “I am good at getting information out of people who do not want to give it” is more memorable and more useful than “analytical skills”.
“Walk me through your résumé”
Not a recitation. Two to three minutes explaining the decisions: why you chose that programme, why you moved, what you were looking for each time and whether you found it. A résumé walk that explains the transitions tells the interviewer how you make choices, which is the point of asking.
Family four: your questions
These are assessed. An unprepared “no, I think you covered everything” reads as disengagement, and a question answered on the firm’s homepage reads worse.
The test is whether the question could only be answered by this person. Their experience is the resource.
Questions that work:
- “What is a project that changed how you think about a problem?”
- “What surprised you about the work in your first year that you would not have predicted?”
- “Where do you think this office’s client base is heading in the next few years?”
- “What kind of person struggles here who you would not expect to?”
Questions to avoid at this stage: compensation, promotion timing, hours framed as a concern, anything on the careers page, and anything that reads as testing the interviewer rather than learning from them.
Prepare four. Two will usually be answered during the conversation.
Practising the round
Read the answers aloud rather than in your head, because the difference between a written answer and a spoken one is large and only audible out loud. Record two or three and check whether you reached the point within forty-five seconds.
Then have someone ask the questions in a different order and phrasing from the one you rehearsed. The purpose is to break the association between a specific wording and a specific answer, which is the thing that makes a prepared candidate sound prepared.
For where this round sits in a full plan, see the fit interview hub. The firm profiles cover how McKinsey, BCG and Bain each run it, and the case interview hub covers the other half of the day.
