In a typical first round of eight MBB candidates, two or three lose the case on agenda control, not on arithmetic. McKinsey's interviewer owns the path; BCG expects you to own it. That single difference explains more of the McKinsey vs BCG prep gap than revenue, prestige, or culture slogans.
After this piece you should be able to pick which format you are about to sit, score a sample answer the way an interviewer does, and build a one-week drill plan that stops you from practicing "one generic MBB case" for both firms.
The decision that actually moves your odds
Brand, pay, and "which firm feels nicer" are real later. In recruiting season they are secondary. The primary fork is how the case is scored.
| Dimension | McKinsey (what the sheet rewards) | BCG (what the sheet rewards) |
|---|---|---|
| Case control | Interviewer leads prompts; you follow cleanly | You set structure and next steps |
| Online screen | Solve gamified assessment for many consulting roles | Chatbot / online case (often called Casey) in many offices; follow your invite |
| Fit format | Personal Experience Interview with deep follow-ups | Skills interview plus team interview for client-facing roles |
| Common failure mode | Ignoring the interviewer's turn; forcing your own tree | Waiting for prompts; passive structure |
McKinsey's own careers page describes, for most client-facing roles, a personal experience interview and a problem-solving interview, with Solve as a common early step and expertise interviews when the role needs them. BCG publishes a four-step sequence: application, skills interview, case interview, and team interview. Neither firm publishes a confidential scoring rubric. Treat that gap as a gap: the formats above are public; the folklore about "exactly how many points for creativity" is not.
Size and brand: useful context, bad primary filter
As of BCG's April 2026 press release, the firm reported $14.4 billion in 2025 revenue and about 33,500 employees, a seventh consecutive year of published growth after $13.5 billion in 2024. Forbes lists McKinsey at roughly $16 billion revenue and about 40,000 employees (FactSet/Forbes figures; McKinsey has not kept publishing a fresh annual total the way BCG does).
Vault's 2025 North America "best to work for" ranking put BCG first overall, while McKinsey stayed first in prestige in that survey's peer rankings. Those numbers matter for campus talk. They do not change how you open a profitability case at 9:15 a.m.
My estimate, labeled as such: for most US undergrad and MBA recruiting channels, office strength and school relationship swing interview odds more than global revenue. Prefer the firm whose local partners hire from your channel over the firm that wins the LinkedIn flex.
Pay is close enough to ignore until you have two offers
Harvard Business School's MBA Class of 2025 employment report put consulting median base pay at $190,000, with most consulting offers clustered tightly around that base. Firm-level McKinsey vs BCG packages for the same level in the same city usually differ by a few thousand dollars of base or bonus, not by a lifestyle. Use pay as a tiebreaker after offer, not as a reason to under-prep one process.
How the same answer scores differently
Take a short original case. HarborLight Apparel sells mid-price outdoor jackets. Revenue is down 8% year over year. Contribution margin held. The partner asks: why, and what would you do first?
A candidate says: "I would look at price, volume, mix, and competition, then dig into channels."
McKinsey-style interviewer-led scoring (Ned's rough 1–5):
| Move | Score | Why |
|---|---|---|
| Waits for the first directed prompt after stating a short MECE list | 4 | Matches interviewer control |
| Immediately launches a full 12-branch tree and talks for three minutes | 2 | Burns the clock the interviewer already planned |
| Answers the prompt "volume in wholesale vs DTC" with clean math | 5 | Follows the sheet's path |
BCG-style candidate-led scoring:
| Move | Score | Why |
|---|---|---|
| Owns a prioritized tree, states hypothesis, asks for the first cut of data | 5 | Shows agenda ownership |
| Lists frameworks and waits "what would you like me to look at?" | 2 | Hands control back |
| Changes branch when mix data arrives and narrates the update | 5 | Coachable ownership |
Same candidate, same words, two different sheets. That is the McKinsey vs BCG difference that shows up on offer day.
Work the HarborLight numbers yourself. Suppose units fell from 1.20 million to 1.08 million jackets and average price rose from $120 to $124. Revenue moves from $144.0 million to $133.9 million. Volume explains most of the miss; price helped. In an interviewer-led room, say the decomposition when asked. In a candidate-led room, ask for unit and price data early, then drive to the channel that lost volume.
Ned's rule. Prep the control model first, the industry second. If you cannot say in one sentence who is supposed to pick the next question, you are not ready for that firm's case.
Solve versus chatbot cases: separate lanes
McKinsey positions Solve as a gamified problem-solving assessment. Performance is weighed with the rest of the application, not as a lone veto. Integrity rules are explicit: alone, no AI, no notes, no second screens unless you have an approved accommodation. McKinsey tells candidates not to "case-prep" Solve into a memorized script.
BCG's published interview process page does not name a product called Casey. Many offices still send a chatbot-style online case before or alongside live rounds; your recruiter email is the source of truth for timing and tools. Treat chatbot practice as case practice with typed answers and a short recorded recommendation, not as a video game.
Do not mix lanes. Solve drills do not fix a weak candidate-led structure. Candidate-led structure drills do not teach ecosystem prioritization under Solve's constraints.
Fit: depth versus breadth
McKinsey's personal experience interview often parks on one story and keeps asking what you did. Generic leadership language dies under that pressure. Prep fewer stories, with actions, trade-offs, and measurable impact.
BCG's skills interview covers experience, motivation, and fit more broadly. The team interview, which BCG lists for client-facing roles, is not a lunch-culture chat. It probes whether your analysis holds when someone else pushes, hints, or disagrees. Coachability is part of the evidence, not a soft extra.
Reuse stories across firms only after you re-cut them. A McKinsey PEI version needs action-and-impact specificity. A BCG version needs collaboration and how you adjusted when the room pushed back.
Staffing folklore versus what you can verify
Candidates repeat "McKinsey is global staffing, BCG is local" as if it were a law of physics. Staffing systems change by office and practice, and neither firm publishes a current public staffing manual for applicants. What you can verify is softer: McKinsey markets a strong one-firm identity; BCG's recruiting language leans harder on curiosity, collaboration style, and office experience. Use office visits, coffee chats, and recent alumni in your city for day-to-day reality. Do not treat Glassdoor threads as firm policy.
Exit paths are broadly overlapping: private equity, corporate strategy, tech, and entrepreneurship hire from both brands. Prestige still tilts slightly toward McKinsey in many peer surveys; that is a market perception, not a guarantee that one PE associate program only takes one logo.
A one-week prep split if you have both processes
| Day | McKinsey track | BCG track |
|---|---|---|
| 1–2 | Two PEI stories to five follow-ups each; one Solve familiarization pass | Two candidate-led cases where you never ask "what next?" |
| 3–4 | Three interviewer-led cases; take hints without restarting the tree | One chatbot-style case plus a 60-second recommendation recording |
| 5 | Mix: PEI + short case | Team-style case with a partner who interrupts |
| 6–7 | Weakest skill only (math, charts, or synthesis) | Weakest skill only |
If only one firm invited you, ignore the other column until you have capacity. Parallel prep that dilutes both formats is how strong candidates look average.
Practice this today
Run one HarborLight-style profitability case twice: once with a partner who only asks directed questions (McKinsey control), once where you must state the next analysis before any hint (BCG control). Score yourself with the tables above.
Then do a five-minute first rep on CoachNed (three typed turns, instant scores, no account required), or the live voice case on /interview. For BCG-style chatbot flow, try /casey/urbanbrew-coffee-margin-case. For McKinsey assessment familiarization, use /mckinsey-sea-wolf and /mckinsey-red-rock. Everything is open for seven days, no card; then $120 for a recruiting season or $49 a month.
CoachNed is not affiliated with McKinsey, BCG, Bain, Deloitte, or any firm named here.
Frequently asked questions
Is McKinsey harder to get into than BCG?
Neither firm publishes acceptance rates. Difficulty tracks office, school channel, and year more than a global ranking. Treat both as selective; prepare for the format in front of you.
Does McKinsey or BCG pay more?
At the same level and city, packages are usually close. HBS Class of 2025 consulting median base sat at $190,000 industry-wide for that school's acceptors. Use pay after you have offers, not as your prep priority.
What is the difference between McKinsey Solve and BCG Casey?
Solve is McKinsey's official gamified assessment. Casey is the common name for BCG's chatbot-style online case in many offices, even though BCG's main process page does not brand that step. Prep them in different lanes.
Should I prepare differently for McKinsey and BCG?
Yes. McKinsey rewards clean following of interviewer prompts plus PEI depth. BCG rewards candidate-led structure plus collaboration under pushback. Shared case math still matters; agenda control is the fork.
Can I apply to both McKinsey and BCG at once?
Yes, if you are eligible for both. Sequence live prep by whichever interview lands first, and keep Solve or chatbot practice separate from live-case reps.
Sources
- Interviewing at McKinsey — PEI, problem-solving interview, and assessment overview. Checked 2026-09-24.
- Solve, McKinsey's assessment game — how Solve is framed and integrity expectations. Checked 2026-09-24.
- BCG consulting interview process — application, skills, case, and team interview sequence. Checked 2026-09-24.
- BCG case interview preparation — official guidance that reasoning quality matters more than a single right answer. Checked 2026-09-24.
- BCG reports $14.4 billion revenue (April 2026) — 2025 revenue and headcount. Checked 2026-09-24.
- Forbes: McKinsey & Company — published revenue and employee figures. Checked 2026-09-24.
- Vault 2025 best consulting firms release — BCG overall rank and prestige context. Checked 2026-09-24.
- HBS MBA Class of 2025 employment report summary — consulting share and median base salary. Checked 2026-09-24.