- For consulting roles, Bain says candidates typically complete a digital assessment and then one or more case interviews. Some roles also include at least one behavioural interview.
- The assessment is Sova or TestGorilla, and the email after you apply tells you which. Bain says it takes about 30 to 40 minutes, allows a calculator, pen and paper, and strictly prohibits AI tools.
- Bain asks all candidates for a role the same questions, to reduce bias. Your behavioural answers are compared directly with other candidates', so prepare real examples with a clear personal role and result.
- In the case, Bain looks at how you think, structure the problem and build on ideas, not at one right answer. Think aloud, and expect market sizing questions, which candidates report as common at Bain.
- Bain says it looks for people who can explain why they want to join Bain specifically. Prepare "why Bain" with reasons that are yours.
Bain interview preparation starts with a useful advantage: Bain publishes practical guidance about its process, including the rules of its online assessment. This guide follows the process in order: the assessment, the case, the behavioural part and the final round. It separates what Bain says on its careers pages from what candidates commonly report, because formats vary by office, role and year.
The perspective here is that of a coach who prepares candidates for Bain interviews. CasePreparation's coach, Franco Borgonovo, has not worked at Bain. He spent ten years at BCG, from intern to Principal, interviewing and selecting candidates as a global lead recruiter, and today he coaches candidates for Bain, BCG and McKinsey. The facts about Bain below come from Bain's public pages and from candidate reports. CasePreparation is independent and is not affiliated with Bain & Company.
The Bain process at a glance
Bain's interviewing page says that interviews are customised to the role, and that all candidates for a role receive the same questions, to reduce bias. For consulting roles, candidates typically complete a digital assessment and then one or more case interviews. Some roles include at least one behavioural interview; in others, behavioural questions about past work, academic or personal challenges are part of the conversation.
| Step | What Bain says | What candidates report |
|---|---|---|
| Application | Apply online; Bain warns that it never interviews by instant messaging or asks candidates to pay | CV and sometimes a cover letter, depending on the office |
| Digital assessment | Sova or TestGorilla, about 30 to 40 minutes, required for many consulting roles | Often within a week or two of applying |
| Case interviews | A structured conversation about a real business problem; one or more | Two rounds, each with two or three interviews |
| Behavioural questions | At least one behavioural interview in some roles; same questions for each role | A separate behavioural interview in many processes |
| Final round | Not described separately | Partners and senior interviewers; decision after a debrief |
Bain's page also lists other interview types used for some roles: a conversation with future colleagues about your experience and Bain's operating principles, a review of past work, a written take-home assignment (usually with about three days to complete, sometimes followed by a presentation) and coding challenges for technical roles. If your invitation mentions one of these, ask the recruiter how it works.
Ask how many interviews each round has, whether there is a separate behavioural interview, whether the cases are led by you or by the interviewer, and whether any interview is a written case. Recruiters answer these questions routinely, and their answer for your office beats any general guide, including this one.
The digital assessment: Sova or TestGorilla
Bain publishes the rules of its digital assessment on a dedicated page. The essentials, as Bain states them:
Who takes it
Intern and full-time consulting candidates may need to complete it, depending on role and office. When it is required, it is mandatory: applications without a completed assessment by the deadline are not considered.
Which test
Sova or TestGorilla. You learn which one from an email after you apply.
How long and with what
About 30 to 40 minutes, though timing can vary by office or region. A calculator, pen and paper are allowed, for the assessment only and not in later interviews.
Rules
AI tools are strictly prohibited, as are recordings, screenshots and software that transcribes or gives feedback. Complete it on your own, in a quiet place, on a laptop or desktop.
The two versions differ in practical ways. TestGorilla must be completed in one sitting, and Bain says no preparation is needed; it recommends Google Chrome. Sova can be completed over several sittings, as long as all sections are done before the deadline in your email, and Bain points to sample questions in Sova's candidate preparation hub. Bain says applicants can expect to hear back within 60 days of taking the assessment, and that candidates who have already completed it generally do not need to retake it.
What candidates report about the content
Bain does not publish the sections of each test. The details below come from preparation sites and candidate reports, and they change.
| Test | Preparation focus | Confirm in your invitation |
|---|---|---|
| Sova | Practise the official sample questions and short timed reasoning tasks | Sections, time limits and completion deadline |
| TestGorilla | Build fluency with numerical reasoning, critical thinking and business judgement | Sections, instructions and single-sitting requirements |
Use your invitation to identify the test. Office and regional patterns can change between recruiting seasons.
How to prepare
For Sova, start with the official sample questions on Sova's hub, as Bain suggests. For either test, practise short timed numerical questions with a calculator, because the main difficulty is choosing the right data quickly, not the arithmetic itself. Read each chart's title and units before calculating, and do not spend too long on a single question: in a short timed section, one stuck question can cost several easier ones. Do the assessment when you are rested, and check your setup beforehand, since technical problems are harder to recover from than a hard question.
How the Bain case interview runs
Bain describes the case interview as a structured conversation in which you work through a real business problem, used for consulting roles. It says it is not looking for a single right answer; it looks at how you think, how you structure problems and how you build on ideas as the conversation evolves.
Bain's own tips are practical, and each one corresponds to something interviewers notice:
- Clarify the objective. Make sure you understand the question before diving in.
- Structure your thinking. Use a clear approach and walk the interviewer through it.
- Think aloud. Share your reasoning and calculations, even when you are unsure.
- Listen and adapt. Pay attention to the interviewer's cues and adjust.
- Pause when you need to, emphasise your key points, show your personality and ask thoughtful questions.
Bain also publishes two practice cases on its site, Coffee Shop Co. and FashionCo., which are worth doing before anything else because they show the firm's own style.
What candidates report
Reports differ on who leads the case. Some candidates describe Bain cases as led by the candidate, while other reports describe interviewer-led cases with planned exhibits. In practice, it varies by office and interviewer, so prepare both: propose the next step yourself, and answer direct questions precisely. Candidates also report that market sizing questions are common at Bain, either inside a case or on their own, and that written cases appear occasionally, mostly in later rounds.
The skills behind a strong case
If you are new to case interviews, these are the building blocks. Each appears in the worked case below.
- Clarifying questions. Ask only what could change your plan: the objective, the scope and how the business makes money.
- Structure. Split the problem into three or four parts that do not overlap and together cover the question, using the client's facts. End with a hypothesis and where you would start.
- Market sizing. Choose a logical path, state each assumption with a reason, round to easy numbers and check whether the result is plausible.
- Maths. State what you are calculating before the numbers. In Bain interviews, unlike the assessment, there is no calculator.
- Charts. Read the title, axes and units first; on a two-axis chart, check which series belongs to which axis.
- Synthesis. Start with the answer, give two or three supporting numbers, then a risk and a next step.
For more practice on each skill, see the guides to case interview structuring and case interview maths, and the complete case interview guide, which works through a full profitability case.
A Bain-style case from prompt to recommendation
The case below is fictional and written for this guide. It uses a private equity question, a market sizing and a chart with two axes. Try each step before reading the solution.
Your client is a private equity fund considering the purchase of Brightpaw, a chain of 45 dog-grooming salons in the Netherlands. Brightpaw has opened many salons in the last two years, but its average revenue per salon has fallen from about €350,000 to €280,000. The fund asks: is Brightpaw a good investment?
Step 1: clarify and structure
The question
Ask what you need, then present your approach.
Solution
Two questions matter most. What does a good investment mean here? The fund plans to hold the business for about five years and wants to grow it. What does Brightpaw sell? Grooming visits at a fixed price, booked online; there are no products or veterinary services.
A structure built on the fund's question:
- Market: how big the Dutch dog-grooming market is and whether it is growing
- Brightpaw's position: its share, and why revenue per salon is falling
- Growth plan: how many more salons the market can support, and at what return
- Deal: price, risks and how the fund would exit
- Hypothesis and start: the falling average may be a side effect of opening many new salons rather than a weakening business. I would start by sizing the market, then look at salon performance.
"I'd use the 3Cs: customers, competitors and company. Then I'd look at the financials."
"The fund wants to know whether Brightpaw can grow for five years at a good return, so I'd look at four things: the size and growth of the market, Brightpaw's position and the reason revenue per salon has fallen, the room for new salons, and the deal itself. My hypothesis is that the decline comes from new salons that have not matured yet. I'd like to start by sizing the market."
The weaker answer names a generic framework that could fit any case. The stronger one starts from the fund's goal, uses the fact in the prompt (many new salons, falling average) to form a hypothesis, and proposes where to start.
Step 2: size the market
The question
"Give me an estimate of annual spending on professional dog grooming in the Netherlands."
Solution
Lay out the path first, then the numbers, with a reason for each assumption. These assumptions are rounded and fictional; in an interview, the reasoning matters more than the exact figures.
Households: about 18 million people, roughly 8 million households
Households with a dog: assume 20% → 1.6 million dogs (assume one dog per household)
Groomed professionally: assume 40% → about 640,000 dogs
Visits: 4 a year → about 2.6 million visits
Spending: 2.6 million × €50 a visit → about €130 million a year
Then check and use the result. Brightpaw's 45 salons at about €280,000 each make about €13 million, so "Brightpaw has roughly 10% of the market, which leaves room to grow." A sanity check also helps: €130 million spread over 640,000 groomed dogs is about €200 per dog a year, which is plausible for four visits.
"There are 18 million people, and maybe 10% have a dog, and they spend... maybe €300 a year? So that's about €540 million."
"I'll go from households to dogs, then to dogs groomed professionally, visits and price. About 8 million households; I'll assume one in five has a dog, so 1.6 million. Not every dog needs a groomer, so say 40%, or 640,000 dogs. At four visits a year and €50 a visit, that's about €130 million. That puts Brightpaw at about 10% of the market."
The weaker answer jumps between units (people, then dogs) and guesses a total spend without a path. The stronger one states the logic first, gives a reason for each assumption, uses round numbers and ends by saying what the result means for the client.
Step 3: read the exhibit
The question
The interviewer shows you Exhibit 1. "What does this tell you about the decline in revenue per salon?"
Solution
Read the axes first: bars are revenue per salon in thousands of euros on the left; the line is the share of revenue from repeat customers on the right. Then the pattern: the older the salon, the higher its revenue and the higher the share from repeat customers. Salons open three years or more earn €400,000, more than twice the €180,000 of salons in their first year.
The age mix offers a plausible explanation: 30 of the 45 salons are less than three years old. Higher repeat-customer revenue at older salons is consistent with a customer base that builds over time. To confirm this explanation, compare the same salons over time and check whether locations are comparable.
"New salons make less money than old ones. The line goes up too."
"Revenue rises with salon age, from €180,000 in the first year to €400,000 after three years, and the share from repeat customers rises with it, from 35% to 70%. So new salons look like they ramp up as they build loyal customers. Since 30 of the 45 salons are under three years old, the falling average may largely reflect the mix of young and mature salons. If the younger salons follow the same path, revenue should rise as they mature. I'd want to check whether today's mature salons were opened in similar locations, because that is the key assumption."
The weaker answer describes the bars and the line separately. The stronger one connects them, explains the decline in the prompt, states what it means for the investment and names the assumption to test.
Step 4: give the recommendation
The question
"Should the fund buy Brightpaw?"
Solution
"We sized the market and looked at the salons. The market is about €130 million, and new salons earn less than old ones. Overall it could be a good investment, but there are risks."
"Yes, provided the purchase price leaves an attractive return under a conservative growth scenario. The market is about €130 million and Brightpaw has about 10% of it, so there is room to grow. Two thirds of its salons are under three years old, which may explain much of the lower average revenue; mature salons earn €400,000, with 70% from repeat customers. The main risk is that newer salons are in weaker locations and never mature, so before signing I'd compare the first-year performance of today's mature salons with that of the newest ones."
The weaker answer retells the case. The stronger one gives a decision and its condition first, supports it with the market size and the mature-salon figures, and ends with the main risk and how to test it.
Across the four steps, what made the difference was not knowledge of dog grooming. It was a clear path for the estimate, reading both axes of the chart before concluding, and turning each number into what it means for the fund's decision.
Behavioural questions at Bain
Bain says that some roles include at least one behavioural interview, and that in others behavioural questions about past work, academic or personal challenges are woven into the conversation. Bain also says it gives all candidates for a role the same questions, to reduce bias.
That last point changes how you should prepare. When everyone answers the same question, interviewers compare answers directly. A vague story stands out more, and so does one where the candidate's own role is unclear. Your answer needs a concrete situation, what you personally did and why, and a result someone could check.
The questions to prepare
- Your background. "Tell me about yourself" or "walk me through your CV". Prepare 60 to 90 seconds that explain your choices and end with why you are applying now.
- Your motivation. "Why consulting?" and "why Bain?", sometimes "why this office?".
- Your experiences. "Tell me about a time you..." worked in a team that was struggling, delivered a result under pressure, persuaded someone, took initiative, or learned from a mistake.
How to prepare your stories
- List eight to ten real situations from your studies, work and life: leading, influencing, solving a hard problem, recovering from a setback, delivering a result.
- For each, write what you personally decided and did, why, and what changed. Use "I" for your own actions, and keep the context short.
- Map the stories to likely questions, with a backup for each, so you never repeat a story in the same round.
- Tell each story aloud in about two minutes, then let a partner ask "why?", "what exactly did you do?" and "what would you do differently?".
- Check each result: if the interviewer asked for the number or the outcome, could you give it honestly?
"At my internship our team was understaffed, but we all worked very hard and managed to deliver the project on time. I learned a lot about teamwork and resilience."
"In my internship, two of five analysts left a month before a client deadline. I listed the twelve deliverables, asked the manager which three the client valued most, and proposed dropping two low-value ones. I took the market model myself and set up a daily fifteen-minute check-in. We delivered the three priority pieces on time, and the client extended the project. I learned to agree priorities early instead of trying to do everything."
The weaker answer describes the team and lists qualities. The stronger one shows the candidate's own decisions, the reasoning behind them and a verifiable result, which is exactly what an interviewer can compare across candidates.
If you would like an experienced interviewer to test your stories and cases under realistic conditions, 1:1 coaching with Franco covers both, with a written report after each session.
What Bain looks for, shown through examples
Bain's interviewing page says it looks for curious problem-lovers who are ambitious about helping clients get results, including people whose ambition is quieter. It mentions intellectual curiosity, an entrepreneurial mindset and enjoying challenges. Its "What we believe" page lists four values (passion and commitment, honesty and openness, being practical, and working as one team), a promise of "results, not reports", and a guiding commitment it calls True North: always doing the right thing by clients, people and communities.
The table is our interpretation of how these can show up in an interview; it is not Bain's scoring guide.
| What Bain describes | In the case | In your stories |
|---|---|---|
| Curiosity | Asking why the average fell, not only by how much | Something you learned deeply because you wanted to |
| Results, not reports | Ending with a decision and how to test it | An outcome you can measure, not only the work done |
| Practical | Proposing a test before a big commitment | A plan you simplified so it could be delivered |
| Honesty and openness | Saying when an estimate is weak, and correcting errors | A time you raised a problem or admitted a mistake |
| One team | Building on the interviewer's hints | Helping a teammate or settling a disagreement |
Bain's interviewing page also says candidates may be asked to connect their experience to Bain's operating principles. Read Bain's values page before the interview and pick one or two stories that genuinely fit them, rather than repeating the values back.
The final round at Bain
Bain does not describe its final round separately. Candidates commonly report a second round with partners or other senior interviewers, cases that are more open and less scripted, and a decision taken after the interviewers compare notes in a debrief. Weaknesses noted in the first round are often probed again.
How to prepare:
- Write down what went well and what went badly in each first-round interview, while you still remember.
- Practise cases where the interviewer challenges assumptions and changes direction, not only cases that follow a script.
- After each analysis, say what it means for the client's decision, as a partner would expect.
- Rehearse your behavioural stories and your "why Bain" aloud, and prepare two or three genuine questions for a partner.
The guide to final-round interviews covers this stage in more depth, with examples of how senior interviewers change the direction of a case.
How to answer "why Bain"
Bain's interviewing page says it looks for people who can explain why they want to join Bain specifically. The most common weak answer praises the culture in general terms. A strong answer gives two or three reasons, each supported by something you did or learned yourself: a conversation with Bain consultants, a type of work that fits your background (Bain's private equity work, for example, if you come from finance), or something specific about the office.
"Bain has an amazing culture and a strong focus on results, and everyone I met was very nice."
"Two reasons. First, the work: I spent two years in a corporate finance team, and Bain's private equity work, from due diligence to helping portfolio companies after the deal, is where that background is most useful. Second, how results are measured: two consultants from this office told me about projects where they stayed on after the strategy to help implement it. That emphasis on results rather than reports is the reason I want to join."
The stronger answer gives reasons the interviewer can test, links them to the candidate's background and illustrates specific conversations. It also reflects what Bain says about itself without reciting its values.
If you are applying to several firms, make sure your answer could not be moved to another firm by changing the name. The guides to BCG interviews and McKinsey interviews explain how their processes differ.
Virtual and in-person interviews
Bain gives specific advice for both formats on its case interview page:
In person
Bring pen and paper, write clearly and share your notes with the interviewer, watch your body language, dress professionally and arrive early.
Virtual
Set up a quiet, well-lit space, test your technology in advance, minimise distractions, project presence on screen, and tell the interviewer when you are taking notes.
In a virtual case, saying when you are writing matters more than it seems: silence on a screen feels longer than in a room. Saying "I'll take thirty seconds to lay out my structure" keeps the conversation going.
A preparation plan for Bain interviews
The plan below assumes about six weeks before your first-round interviews. Move the assessment work to the front if your invitation arrives early, because the deadline usually comes before the interviews.
| Weeks | Focus | What to check |
|---|---|---|
| 1 | Learn the format; start daily mental maths; draft your story list | You can describe each step of your process |
| 1 to 2 | Assessment practice for the test named in your email | Timed sections finished with few errors |
| 2 to 3 | Market sizing and chart drills; Bain's two practice cases | Each estimate has a path and a check |
| 2 to 5 | Two to four live cases a week, both case styles, with feedback | Recommendation in under a minute |
| 3 to 5 | Behavioural stories told aloud and tested; "why Bain" written | Each story has your role and a result |
| 6 | Partner-style cases with challenges; rest before the day | Same quality on a tired day |
Complete the assessment first if it is pending. Then confirm the format with your recruiter, do Bain's two practice cases and two or three more with a strong partner, note your two most frequent errors and drill only those. Rehearse three market sizings aloud, your introduction, your best three stories and your "why Bain".
The number of cases you complete matters less than the quality of feedback you get and how quickly you fix recurring errors. Practice with other candidates builds fluency, but another candidate rarely notices what an experienced interviewer would: an estimate with no clear logic, a chart described but not interpreted, or a story where your own role is unclear.
Preparing with an experienced interviewer
Coaching helps at three moments: at the start, to get a diagnosis and a plan; when you are practising a lot but no longer know what to change; and before an important round, to rehearse under realistic conditions. For Bain, it is especially useful for market sizing out loud, chart interpretation and behavioural answers that hold up when compared with other candidates'.
Franco prepares candidates for Bain interviews as a coach. He has not worked at Bain, and sessions use original cases written in the style candidates report for Bain, never real Bain interview material. His view of what weighs in a decision comes from ten years of interviewing and selecting candidates at BCG, where he was a global lead recruiter.
"Franco, just heard back: Bain Munich offer! Really appreciated the structured approach we followed."
S., Bain Munich offer. One candidate's experience; results depend on each candidate and process.
"The way you pushed me on structuring and, especially, on communication made a huge difference in the final rounds."
P., after 7+ sessions, with McKinsey and Bain New York offers. One candidate's experience.
1:1 coaching for Bain interviews
Practise Bain-style cases and behavioural answers with an experienced interviewer
Franco Borgonovo spent ten years at BCG and has conducted more than 1,500 interviews, over 800 of them for MBB firms. Every session is with him, and is followed by a written report with your scores and priorities.
- Cases with market sizing and charts, behavioural questions and "why Bain"
- Start with one session for a diagnosis and a plan; packages of 3, 5 or 10 sessions add a progress dashboard, practice materials and email support
- Money-back guarantee if the coaching does not meet your expectations
Not sure what you need? Use the free call to tell Franco your target offices, interview dates and where you feel stuck.
Frequently asked questions
Will I take Sova or TestGorilla?
Bain says you learn which one from an email after you apply. Preparation sites report regional patterns, but they are not confirmed, so rely on the email.
Can I use a calculator at Bain?
In the digital assessment, yes: Bain allows a calculator, pen and paper. Bain also says calculators are allowed only for the assessment, not in later interviews.
Can I prepare for TestGorilla?
Bain says no preparation is needed for TestGorilla. General practice with short timed numerical and reasoning questions still helps you manage time. For Sova, Bain points to the sample questions in Sova's preparation hub.
How long do I wait for assessment results?
Bain says timelines vary by role and office, and that applicants can expect to hear back within 60 days of taking the assessment.
Is the Bain case led by me or by the interviewer?
It varies. Candidate reports differ, and other reports describe interviewer-led cases. Prepare to propose the next step yourself and to answer direct questions precisely.
How long should I prepare?
As a planning reference, six to eight weeks if you are starting from zero and three to four weeks with some practice. Measure progress by recurring errors disappearing rather than by the number of cases completed.
Final checklist
Your next step
Check your invitation, complete the assessment if it is pending, then run one full case this week with a market sizing and a chart, and note where you needed help. If you want an experienced interviewer's view of where you stand and what to fix first, one session gives you a realistic mock, a debrief and a written plan.
Coaching with Franco
Get a precise diagnosis before your Bain round
A realistic interview, a debrief and a written report with your priorities. Start with one session, or talk it through for free first.
About Franco
Franco Borgonovo
Former BCG Principal · 10-year tenure · Official BCG coachFranco spent ten years at BCG, from intern to Principal, interviewing and selecting candidates as a global lead recruiter. He is still an official BCG coach for new hires, and today works one to one with candidates on applications, McKinsey Solve and interviews.
More about Franco →- Bain & Company: Interviewing (careers page) · interview types by role, same questions for each role, what Bain looks for; read 2 November 2026
- Bain & Company: Case interview (careers page) · format, tips, in-person and virtual advice, example cases; read 2 November 2026
- Bain & Company: Digital assessment (careers page) · Sova or TestGorilla, duration, tools allowed, AI rules, results; read 2 November 2026
- Bain & Company: What we believe · values, promise and True North; read 2 November 2026