Most candidates treat "generalist vs specialist" as a preference about industries. That is the wrong fork. The real choice is which exam you sit and which promotion currency you accumulate for the next five years.
McKinsey, BCG, and Bain all run a broad client-delivery track and a deeper expert or practice-affiliated track. Bain names it plainly: general consulting versus expert consulting, and inside the expert house it even splits an "expert track" (lead client work, help generate new business) from a "specialist track" (foremost authority on a Bain product or tool) on its client delivery expert titles page. McKinsey and BCG use different labels for the same structural idea. After this piece you should be able to name which track a posting is selling, what the interviewer is scoring, and what "up or out" actually measures on each ladder.
What the firms publish, not what prep folklore says
Start with the firms' own career language. It is more precise than the internet's binary.
| Firm | Broad / generalist track | Deep / specialist-adjacent track | What the firm says the deep track does |
|---|---|---|---|
| McKinsey | Generalist consulting (Business Analyst, Associate, then Engagement Manager and above) | Practice consultant; Expert / Solutions pathways in practices such as Sustainability | Experts spend part of their time on client service and part building firm knowledge and capabilities in a domain (Sustainability careers) |
| BCG | Core consulting (Associate, Consultant, and up) | Expertise and Insights / Knowledge Expert roles (often under BCG Vantage) | Embedded experts who bring proprietary assets and topic depth to case teams and senior leaders |
| Bain | General consulting ("generalize, then specialize") | Expert consulting; expert vs specialist ladders under client delivery | Experts staff when domain depth is the winning difference; specialists own a product or tool |
Two clarifications matter. First, "specialist" is not one job: Bain separates client-leading experts from product/tool specialists; McKinsey Experts are not the same as technical data-scientist hires; BCG Knowledge Experts sit with case teams, not as quieter Associates. Second, firms do not publish a fixed "70 percent generalist" hire mix—that is folklore. They do publish staffing logic: generalists rotate; experts arrive when a case needs a defined toolkit.
How the interview actually differs
These are different exams, not two difficulty settings on the same case.
Generalist interviews
The sheet rewards transferable problem solving under ambiguity. McKinsey's public interviewing guidance for most client-facing consulting roles is a personal experience interview plus a problem-solving interview; many candidates also see Solve. Bain and BCG generalist loops follow the same shape: structured case, crisp math, stealable synthesis, and behavioral evidence you can lead without a script.
What I listen for: invent a structure for a problem you have never seen, drive the math without hiding, land a recommendation that names trade-offs. Domain vocabulary is a bonus, not the product.
Expert and practice interviews
McKinsey is explicit that, depending on the role, you may also face an expertise interview, and that technical roles get tailored assessments on the same page. That is the tell: the firm is buying prior skill, not only learning speed.
In the room that usually means a narrower case set inside the practice, a depth probe on a real project you owned, and for technical seats a work sample. Folklore that "experts skip cases" is false for most client-delivery expert seats; what changes is the weight of the expertise block. BCG Knowledge Expert / Vantage interviews lean on research judgment and whether you can partner a case team without becoming a back-office analyst. Bain expert hiring looks for depth in areas such as supply chain, commercial excellence, advanced analytics, or enterprise technology.
| Signal in the posting | Prep that moves the score | Prep that wastes a week |
|---|---|---|
| "Associate / Consultant," no practice named | Full case range, PEI/behavioral depth | Memorizing one industry's jargon |
| Practice named, still a consulting title | Cases plus one credible domain story | Treating it like a pure campus generalist loop |
| Expert / Knowledge Expert / Vantage / product specialist | Expertise interview + role sample; lighter but sharp case | Forty generic profitability cases |
How the promotion ladder differs
Titles can look parallel while the evaluation currency diverges.
Bain's general consulting page states the philosophy in one line: generalize, then specialize. McKinsey's published consulting roles progression is Business Analyst to Associate to Engagement Manager to Associate Partner to Partner. Promotion on that track rewards clean problem solving, client trust across settings, people leadership, and eventually a book of business that is not trapped in one micro-niche. The expensive failure mode on my generalist manager sheets is not weak industry knowledge—it is needing the expert in the room to do the thinking.
Bain's expert arc is concrete: early workstreams; later team leadership, client development, and intellectual property. The client-delivery expert titles page adds the fork—expert track for client leadership and business generation; specialist track for product or tool ownership. McKinsey Experts (for example in Sustainability) split time between client service and building firm capabilities. BCG Expertise and Insights roles deliver proprietary assets to clients and internal teams; published stories include consultants who later move into BCG Vantage.
| Dimension | Generalist track | Expert / Knowledge / practice-affiliated |
|---|---|---|
| Early years | Broad staffing; toolkit first | Domain repetition; depth first |
| Mid-career test | Lead ambiguous, multi-workstream cases | Be the reason the practice wins the work |
| Partner-level product | Cross-industry client relationships | Practice IP, scarce capability, domain advisory |
| Switching cost | Easier to deepen later | Harder to prove broad ownership later |
Pay at the same firm and level is usually the same early. Ladders diverge on what "ready for the next title" means in the review, not the year-one base line.
Worked example: two offers, same week
You have two written offers at the same office and the same total cash (call it $195k all-in for a post-MBA seat). Offer G is generalist consulting. Offer E is expert consulting in commercial excellence.
Reproduce this on a napkin. Assume you stay five years and you care about optionality.
| Year | Offer G (generalist) | Offer E (expert) |
|---|---|---|
| 1 | Three industries, three problem types | Mostly pricing and sales-force work |
| 2–3 | Still sampling; start soft preference | Recognized as go-to on discount waterfalls |
| 4–5 | Can staff on most local cases; pick a practice | Can lead domain workstreams; thinner proof on unrelated industries |
Now score each path on a 0–5 scale for three outcomes you actually care about. Use my rough weights: exit flexibility 40 percent, speed to usable expertise 35 percent, interview rematch risk if you change firms later 25 percent.
| Outcome | Weight | Score G | Score E | Weighted G | Weighted E |
|---|---|---|---|---|---|
| Exit flexibility (corp strat, PE ops, another firm) | 0.40 | 5 | 3 | 2.0 | 1.2 |
| Speed to credible depth clients will pay for | 0.35 | 2 | 5 | 0.7 | 1.75 |
| Rematch as generalist later | 0.25 | 5 | 2 | 1.25 | 0.5 |
| Total | 3.95 | 3.45 |
If your true weights flip—depth and a named franchise matter more than exits—Offer E wins. The point is not the math's absolute truth. The point is that "I like pricing" is not a decision rule. Weights are.
Ned's rule. Read the posting for the exam, not the logo. If the firm is buying depth, bring a domain story you can defend for twenty minutes. If it is buying breadth, prove you can structure a problem you have never seen. Mixing those prep plans is how strong candidates look average.
How to choose when you are still undecided
Bain's published advice for general consulting is to build a general skill set before locking a field. McKinsey's guidance for picking a role says join as a generalist if you do not yet know what to focus on, and choose a practice role if you already know the work and want guaranteed practice mentorship. Undecided people who start expert often spend later years manufacturing breadth evidence; undecided people who start generalist can specialize without rewriting their identity.
Choose expert early when you already have real domain proof, the niche has durable client demand, and you are comfortable that your promotion story will be "scarce skill the practice sells." Otherwise start generalist and specialize on purpose around years two to four—that timing is a planning heuristic, not a firm-published clock.
Practice the exam you will actually sit
If your target is a generalist loop, run a full case under time and force a recommendation with trade-offs. If your target names a practice or expert seat, pair a sharp case with a twenty-minute domain story that survives follow-ups.
Try the five-minute first rep on /start (three typed turns, instant scores, no account), or sit the live voice case on /interview when you need full PEI-plus-case pressure. Structure and synthesis drills live at /drills/structure and /drills/synthesis; behavioral follow-ups are at /behavioral. Everything is open for seven days, no card; then $120 for a recruiting season or $49 a month.
Frequently asked questions
Is an expert consultant still a "real" consultant at Bain or McKinsey?
Yes. Bain places experts on case teams and describes them as core to how client outcomes get delivered. McKinsey Experts still do client service; they also build practice knowledge. The job is client-facing. It is not a back-office research seat by default.
Do specialist interviews skip the case?
Usually no for client-delivery expert seats. McKinsey publishes that most consulting interviews include problem solving, with an expertise interview added depending on role. Technical seats can replace or supplement that with a skills assessment. Assume a case unless your recruiter says otherwise in writing.
Can I move from generalist to expert later?
Often yes, and the firms advertise mobility. BCG publishes consultant-to-Vantage transitions. Bain frames general consulting as generalize-then-specialize. Moving the other way—expert to broad generalist ownership—is harder because you must prove you can lead outside your niche.
Do generalists and specialists get paid differently at the same level?
Firms do not typically advertise a track-based base gap at the same title and office. Early cash is usually level-driven. Divergence shows up later in what kind of book, IP, or scarce capability you can monetize, which is not the same as year-one total compensation.
Should campus candidates apply to a practice or go generalist?
McKinsey's published guidance for North American campus applicants interested in a practice is to use the standard Business Analyst or Associate application and indicate practice interest there. Bain's campus default for most undergraduates and MBAs is still general consulting unless you are explicitly recruiting into an expert capability. When unsure, generalist keeps options open.
Sources
- Consulting Roles | McKinsey & Company — classic BA → Partner progression on the consulting path. Checked 2026-09-24.
- Explore McKinsey Careers - Consulting — firm description of generalist consulting adaptability across industries and functions. Checked 2026-09-24.
- Finding your role in Sustainability at McKinsey — Solutions vs Expert pathways; Expert time split between client service and capability building. Checked 2026-09-24.
- Interviewing at McKinsey — PEI, problem-solving interview, optional expertise interview, technical assessments. Checked 2026-09-24.
- Expertise and Insights | BCG Careers — Knowledge Expert / Vantage embedding in practices; career mobility examples. Checked 2026-09-24.
- General Consulting at Bain — staffing across industries and capabilities; "generalize, then specialize." Checked 2026-09-24.
- Expert Consulting at Bain — domain staffing, IP development, leadership path for experts. Checked 2026-09-24.
- Client Delivery Expert Titles | Bain — expert track vs specialist (product/tool) track inside client delivery. Checked 2026-09-24.
CoachNed is not affiliated with McKinsey, BCG, Bain, or any firm named above.