Most candidates prepare for "case interview rounds" as if the process starts when a consultant opens a case folder. It does not. McKinsey, BCG, Bain, and Deloitte each publish a multi-gate funnel—application, online assessment, first round, final round, offer—and the person who can advance you changes at every gate. After this piece you should be able to draw your firm's sequence on one page, know who decides at each step, and put practice hours on the next gate rather than the one after it.
This article stays on end-to-end structure and timing. For the room-level shift between rounds, see first round vs final round and final-round prep.
The five gates, not "two rounds"
Prep folklore compresses everything into "first round" and "final round." Firm career pages do not. The modal consulting funnel has five stages:
| Gate | Who usually decides | What the sheet is looking for | Typical clock |
|---|---|---|---|
| Application | Recruiting screeners (sometimes AI-assisted triage) | Resume signal, school or experience filters, basic fit to role | Hours to a few weeks after deadline |
| Online assessment | Algorithm plus recruiter review | Speed, numerical or logical skill, sometimes case judgment without a human | 30–75 minutes of your time; days to weeks of firm review |
| First round | Consultants / managers / project leaders | Case mechanics + short fit; "would I staff this person?" | 2–3 interviews, ~45–60 min each |
| Final round | Partners / principals / senior directors | Judgment, client-room composure, deeper fit | 2–3 interviews, often same half-day |
| Offer | Recruiting + partner consensus | Written offer, start date, sometimes references | Often within a week of finals (Deloitte states this explicitly for US offers) |
"Two rounds" is true only of the human case days. If you skip the assessment gate in your mental model, you will under-prep the stage that culls the largest share of applicants before a partner ever hears your name.
Office, channel (campus vs experienced hire), and role can collapse or stretch this map. Treat the table as the default shape, then read your invite email as the source of truth.
What each firm publishes (and what it does not)
Firms rarely publish pass rates. They do publish sequence, formats, and rough lengths. Below is what the career sites state as of late 2026—not what Glassdoor threads claim.
McKinsey
McKinsey's interviewing page describes an application that may include a game or test—most consulting candidates meet Solve—then interviews that combine a Personal Experience Interview (PEI) with a problem-solving (case) interview. Regional pages fill in the round structure: Sweden's full-time page states two one-hour first-round interviews with consultants, then two one-hour finals with partners, with feedback within a week of finals.
| Stage | McKinsey (as published) | Who decides |
|---|---|---|
| Application | Online CV / materials; office windows vary | Recruiting |
| Assessment | Solve (gamified problem-solving) for most consulting roles | Assessment + recruiting |
| First round | Often 2 × ~1 hour; PEI + case | Consultants |
| Final round | Often 2 × ~1 hour with partners (some offices pack same day) | Partners |
| Offer | After successful finals | Partner + recruiting |
Confirm length and same-day vs multi-day from your recruiter; McKinsey does not publish one global minute-count.
BCG
BCG's global interview process lists application, skills interview, case, and team interview. Office pages are sharper on assessments. BCG Mexico sequences apply → Online Case Experience (Casey, ~30 minutes) and, for Associates, CCA (~30 minutes) → first round of two or three 45-minute cases → final round of two or three more → offer. For Associates there, deadline to offer often takes about two to three weeks. US Associate postings add a CCA invite within hours of apply (48-hour window) and a select-group online case roughly two weeks after the deadline.
| Stage | BCG (modal published pattern) | Who decides |
|---|---|---|
| Application | Portal apply; CV (+ cover letter in many offices) | Recruiting |
| Assessment | CCA and/or OCE / Casey (~30–35 min) | Assessment + recruiting |
| First round | 2–3 × 45 min case interviews | Consultants / managers |
| Final round | 2–3 × 45 min case interviews | More senior interviewers |
| Offer | Written offer after successful finals | Recruiting + partners |
Bain
Bain's hiring process overview covers application review, possibly a recruiter call, and several interview rounds; consulting adds a digital assessment and cases. The digital assessment hub states that intern and full-time consulting candidates may need Sova or TestGorilla (~30–40 minutes), that missing the deadline means the application is not considered, and that hearing back can take up to about 60 days. London Associate Consultant pages describe assessment after apply, then two case-interview rounds.
| Stage | Bain (as published) | Who decides |
|---|---|---|
| Application | CV / education / experience / scores as required | Recruiting |
| Assessment | Sova or TestGorilla when required (~30–40 min) | Assessment + recruiting |
| First round | Case interviews (count set by office) | Consultants / managers |
| Final round | Case interviews; often denser senior presence | Partners / senior leaders |
| Offer | After successful finals | Recruiting + partners |
Bain allows a calculator on the digital assessment only—not in subsequent interviews. That single line tells you the assessment and the case days reward different habits.
Deloitte (US consulting path)
Deloitte's US recruiting tips publish meet → search → apply → interview → offer. Selected candidates usually get an initial interview within one to two weeks, then two to three rounds mixing behavioral, technical, and case formats by role. Written offers often arrive within one week of the final interview. Case and scenario tips emphasize clarify, assumptions, summarize, recommend, and next steps.
| Stage | Deloitte US (as published) | Who decides |
|---|---|---|
| Application | Online apply; resume review | Recruiting |
| Assessment | Role-dependent; not always a universal game like Solve | Recruiting / practice teams |
| First / middle rounds | Mix of behavioral, technical, case across 2–3 rounds | Professionals at rising seniority |
| Final / senior round | Often more senior interviewers + deeper fit | Partners / principals |
| Offer | Often written within ~1 week of finals | Recruiting |
Big Four tracks vary more by service line than MBB; the assessment gate may be a written exercise, a case day, or skipped for some experienced hires.
Worked example: one campus timeline you can reproduce
Invented firm, real arithmetic. You apply to "Northbridge Consulting" in Week 0 under the modal MBB campus shape.
| Week | What happens | Your prep focus |
|---|---|---|
| 0 | Submit application | Resume one-pager clean; no case grinding yet beyond light reps |
| 0–1 | Online assessment invite; 48-hour window; 40 minutes on the clock | Numerical speed + one timed chatbot or exhibit set |
| 2 | First-round invite for Week 4 | Structure + math hygiene; two PEI/fit stories |
| 4 | Two 50-minute interviews (consultant, EM) | Mechanics; ask recruiter about case style |
| 5 | Advance email | Shift to synthesis and partner-room pushback |
| 6 | Three final interviews, one half-day | Recommendation quality + fit depth |
| 7 | Offer call + written letter | Negotiation questions ready |
Five human cases; two earlier gates (application, assessment) that can end you without a case. If Weeks 0–3 go 80% to full mocks and 20% to assessment speed, you are prepping the wrong gate.
Reality check on calendars: many batch MBB campus cycles run 4–10 weeks from deadline to offer; BCG Mexico cites roughly 2–3 weeks for Associates; Bain allows up to ~60 days after the digital step in some markets. Do not copy another office's calendar.
Who decides, and why that changes your prep
Recruiters and algorithms decide whether you get a human case. Consultants decide whether you are "staffable." Partners decide whether they want you in a client meeting next quarter. Those are different questions.
Ned's rule. Prep for the next person who can kill your process, not for the person you hope to impress two gates later. An elegant partner recommendation does not help if Solve or Sova already filtered you out.
That is why first-round sheets overweight structure, exhibits, and clean arithmetic, while finals overweight synthesis, tradeoffs, and fit under pushback. Sequence the practice: assessment reps before first-round mocks when the invite says assessment first.
Common timing traps
Same-day finals. Some McKinsey offices run first and final on one day. Plan a two-minute reset, not a restudy block.
Short assessment windows. BCG CCA often wants completion within 48 hours of invite; Bain links can arrive within a week of apply. Block time the day you submit.
Big Four ≠ MBB. Deloitte publishes 2–3 mixed rounds and a fast written offer, not two identical three-case days. Ask recruiting for your role's formats.
Channel. Experienced hire may skip the campus assessment or compress to one day. Campus MBB almost never skips the assessment when the office uses one.
Practice the next gate, not the whole funnel
If your next email is an assessment, run a timed numerical or chatbot-style case, not a three-hour partner mock. If your next email is first round, tighten structure and math. If finals are booked, practice short recommendations and fit under interruption.
Concrete assignment for today: open a timer for 45 minutes. Spend 15 minutes on a structure drill, 15 on quick math, and 15 writing a 60-second recommendation for a case you already know. That is one first-round slot's rhythm. For a full voice case with a seven-score debrief, use the live interview (CopperCup, about 18 minutes). Everything on CoachNed is open for seven days with no card; then $120 for a recruiting season or $49 a month.
Frequently asked questions
How many case interview rounds do consulting firms run?
Most MBB processes use two human interview rounds after screening, typically two or three interviews each, so four to six cases total. That sits on top of an application gate and, for many offices, an online assessment. Deloitte US describes two to three interview rounds that may mix formats. Always confirm from your invite.
What comes before the first-round case interview?
Usually an online application and, at McKinsey, BCG, and Bain consulting tracks, a digital assessment (Solve, CCA/OCE, or Sova/TestGorilla). Recruiters review those results before booking first-round slots. Skipping assessment prep is the most common early funnel mistake.
Who interviews you in first round vs final round?
First rounds are usually consultants, engagement managers, or project leaders. Final rounds add partners, principals, or other senior leaders. The seniority shift is the clearest public signal that the evaluation standard has moved from mechanics toward judgment and fit.
How long does the full process take from apply to offer?
It varies by office and cohort. Compressed campus cycles can finish in about two to three weeks after the deadline; many MBB campus processes run closer to one to two months; Bain notes that post-assessment feedback can take up to about 60 days in some markets. Use your recruiter's stated dates, not a generic blog calendar.
Does every Big Four consulting process include an online game?
No. Deloitte US publishes application, multi-round interviews, and offer without mandating a single firm-wide game for every consulting hire. Some roles use cases, scenarios, or technical screens instead. Ask recruiting what your track requires.
Sources
- Interviewing at McKinsey — Solve / assessment mention; PEI and problem-solving interview structure. Checked 2026-09-24.
- McKinsey Sweden full-time opportunities — Two consultant first-rounds and two partner finals; feedback timing. Checked 2026-09-24.
- BCG consulting interview process — Application, skills, case, and team interview framing. Checked 2026-09-24.
- BCG Mexico careers — OCE/CCA lengths; 2–3 × 45-minute first and final rounds; Associate timeline. Checked 2026-09-24.
- Bain hiring process — Application, recruiter call, interview rounds; consulting case path. Checked 2026-09-24.
- Bain digital assessment — Sova/TestGorilla, 30–40 minutes, deadline rules, ~60-day response window. Checked 2026-09-24.
- Deloitte US recruiting tips — Apply, 2–3 interview rounds, offer often within one week of finals. Checked 2026-09-24.
- Deloitte case and scenario interview tips — Five-step case approach and what cases assess. Checked 2026-09-24.
CoachNed is not affiliated with McKinsey, BCG, Bain, Deloitte, or any firm named above.