Big 4 Consulting Firms: Deloitte, PwC, EY, KPMG Compared (2026)
Mar 30, 2026
Firm Specific · Big 4 Consulting, Deloitte Consulting, Pwc Consulting
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Published Mar 30, 2026
Summary
Deloitte, PwC, EY, and KPMG compared: services, salaries, interview formats, and which firm is right for your career path.On this page
The Big 4 consulting firms are Deloitte, PwC, EY, and KPMG. Together they employ over 1.5 million professionals across 150+ countries and generated a combined $220+ billion in global revenue in 2025 — making them collectively the largest professional services ecosystem in the world.
If you're comparing your options as a consulting candidate, this guide gives you what you actually need: verified revenue and headcount figures, salary ranges by level, a plain-English breakdown of each firm's interview process, and an honest side-by-side against MBB.
Quick Comparison: Big 4 Consulting Firms at a Glance
| Firm | 2025 Global Revenue | Employees (2025) | Consulting/Advisory Brand | US Analyst Starting Salary |
|---|---|---|---|---|
| Deloitte | $70.5B | ~470,000 | Monitor Deloitte + Deloitte Digital | ~$90,000–$100,000 |
| PwC | $56.9B | ~364,000 | Strategy& (formerly Booz & Co.) | ~$85,000–$100,000 |
| EY | $53.2B | ~406,000 | EY-Parthenon | ~$90,000–$100,000 |
| KPMG | $39.8B | ~276,000 | KPMG Advisory / Global Strategy Group | ~$85,000–$97,000 |
Sources: Deloitte Global FY2025 Revenue Report; PwC Global Annual Review 2025; EY Global Revenue Announcement FY2025; KPMG Global Revenue Report FY2025 (ended Sept 30, 2025). Salary data from Levels.fyi, Glassdoor, and Management Consulted (2025–2026).
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Try a free caseDeloitte Consulting
Deloitte is the largest of the Big 4 by both revenue and headcount. In FY2025 (ended May 31, 2025), Deloitte reported $70.5 billion in global revenue — the first professional services firm in history to cross the $70 billion mark — representing 4.9% growth year-over-year in US dollar terms. Its global workforce grew by roughly 10,000 to approximately 470,000 employees.
What Deloitte Consulting Does
Deloitte's consulting arm is organized into five main service areas:
- Strategy & Analytics (including Monitor Deloitte, its high-level strategy practice)
- Human Capital — workforce transformation, organizational design, talent strategy
- Customer & Marketing — customer experience, marketing analytics, loyalty programs
- Enterprise Technology & Performance — SAP, Salesforce, Oracle implementation and cloud migration
- Core Business Operations — supply chain, procurement, finance transformation
Deloitte Digital sits as a dedicated sub-brand for digital transformation, handling everything from app development to large-scale technology modernization. It's one of Deloitte's fastest-growing units and competes directly with Accenture Interactive and IBM iX.
Key industries: financial services, life sciences, government, energy, consumer products, technology, media and telecom.
Deloitte Consulting Salary by Level (US, 2025–2026)
| Level | Base Salary Range | Total Compensation (est.) |
|---|---|---|
| Analyst (Business Analyst) | $90,000–$100,000 | $95,000–$110,000 |
| Consultant | $100,000–$123,000 | $110,000–$135,000 |
| Senior Consultant | $113,000–$145,000 | $125,000–$160,000 |
| Manager | $145,000–$175,000 | $160,000–$200,000 |
| Senior Manager | $175,000–$215,000 | $200,000–$250,000 |
| Partner/Principal | $300,000–$587,000+ | $500,000–$2.5M+ |
Data: Levels.fyi, Glassdoor, Management Consulted (2025–2026). Bonuses typically add 10–20% at junior levels.
Deloitte Consulting Interview Process
Deloitte's consulting interview process runs 2–3 rounds and is distinctively candidate-led — you are expected to drive the structure, select which areas to explore, and push toward a recommendation without being guided.
Typical process:
- Online application + screening — resume screen and sometimes a short online assessment
- First-round interviews — one 30–45 minute behavioral interview and one or two 30–45 minute case interviews, conducted by consultants or junior managers
- Final round — partner or director interview, combining a more senior case with a deeper behavioral component; some offices add a group case exercise
The cases themselves tend to be structured around operations, strategy, and technology transformation themes — reflecting Deloitte's client base. Expect profitability problems, market entry cases, and increasingly, cases with a digital or AI implementation angle.
For full prep guidance, see our Deloitte case interview guide.
Deloitte Culture and Fit
Deloitte consultants describe a large-firm environment where your experience varies significantly by practice area and office. The tech consulting practices tend to be more structured and process-oriented; Monitor Deloitte (strategy) is smaller and operates closer to MBB norms. The firm scores well on work-life balance relative to MBB, with more predictable travel schedules in many practices.
One area where Deloitte consistently stands out is investment in employee development. The firm runs Deloitte University (DU), a leadership development campus in Westlake, Texas, where consultants across all levels attend training programs. This structured learning culture means new analysts receive more formal onboarding and skills development than at smaller strategy boutiques.
Deloitte's consulting practice is also one of the few Big 4 environments where you can realistically pivot between strategy, technology, and operations work within a single firm — useful for early-career consultants still deciding what they want to specialize in.
PwC Consulting (Strategy&)
PwC reported $56.9 billion in global revenue for FY2025, with its global headcount declining to approximately 364,000 — a reduction of 5,600 from the previous year, reversing an earlier goal to reach 400,000 employees. The cuts were concentrated in non-client-facing roles and some lower-utilization advisory practices.
What PwC Consulting Does
PwC's consulting identity is defined by two distinct brands operating under the same parent:
Strategy& is PwC's premium strategy consulting arm, formed from the 2014 acquisition of Booz & Company. It competes directly with McKinsey, BCG, and Bain for high-stakes strategic mandates — corporate strategy, M&A due diligence, growth strategy, operating model redesign. Strategy& operates with a culture and compensation structure meaningfully different from the broader PwC firm.
PwC Advisory (sometimes called Management Consulting or Deals Advisory) covers implementation, risk, technology, transactions, and regulatory consulting. This is where the majority of PwC's consulting headcount sits.
Key industries: financial services (particularly strong), healthcare, government, industrials.
PwC Consulting Salary by Level (US, 2025–2026)
| Level | PwC Advisory (Base) | Strategy& (Base) |
|---|---|---|
| Associate / Analyst | $72,000–$100,000 | $90,000–$115,000 |
| Consultant / Senior Associate | $96,000–$138,000 | $120,000–$156,000 |
| Senior Consultant | $114,000–$170,000 | $140,000–$195,000 |
| Manager | $148,000–$227,000 | $196,000–$308,000 |
| Partner | $299,000–$542,000 | up to $700,000 |
Data: PwC pay range disclosures, Levels.fyi, Management Consulted (2025–2026). Strategy& compensation is notably higher and approaches MBB at senior levels.
PwC / Strategy& Interview Process
PwC and Strategy& run parallel but distinct recruiting tracks. Applying to Strategy& requires a separate application.
Strategy& interview format:
- First round — two 45-minute interviews, each combining a candidate-led case with a behavioral/fit component
- Final round — two to three interviews; one or more include written case components where you receive materials 30–60 minutes in advance and prepare a brief presentation
The written case is Strategy&'s signature differentiator from Deloitte and KPMG. It tests synthesis and communication under time pressure — not just structured thinking.
PwC Advisory uses a more standard format: one behavioral interview and one or two case interviews, typically spanning two rounds.
See our dedicated PwC case interview guide for practice cases and prep strategy.
PwC Culture and Strengths
PwC Advisory's culture is described as more formal and structured than Deloitte's, with a strong emphasis on risk management and regulatory process — a natural carry-over from its audit heritage. For consultants in financial services or healthcare, this orientation is a feature rather than a limitation.
Strategy& operates quite differently from the broader PwC firm. It has a smaller, more selective recruiting cohort, heavier case interview requirements, and compensation that approaches MBB. If your target is high-level corporate strategy work and you want to remain within the Big 4 ecosystem, Strategy& is the most direct path.
EY (EY-Parthenon)
EY reported $53.2 billion in global revenue for FY2025, a 3.9% increase in US dollar terms. After reducing headcount in the prior year, EY expanded its global workforce by 3.4% to 406,206 employees in FY2025.
What EY-Parthenon Does
EY's consulting story in 2025 centers almost entirely on EY-Parthenon, which underwent a major expansion in early 2025 when EY merged its Strategy & Transactions division (including its M&A advisory, real estate advisory, and restructuring teams) into the EY-Parthenon brand.
The result is a 25,000-person strategy and transactions powerhouse operating across 150 countries — making EY-Parthenon the largest strategy consulting practice of any Big 4 firm by headcount. EY announced a $250 million investment in AI tools and partnerships with Microsoft and OpenAI to support the expansion.
EY-Parthenon's core services:
- Corporate strategy — growth strategy, portfolio optimization, competitive positioning
- Transaction strategy & execution — M&A diligence, carve-outs, post-merger integration
- Restructuring & turnaround — operational and financial restructuring for distressed companies
- Sector strategy — deep sector expertise in private equity, healthcare, industrials, and technology
EY-Parthenon is particularly well-known for its private equity clientele — many PE firms use EY-P for both commercial due diligence and portfolio company transformation work.
EY-Parthenon Salary by Level (US, 2025–2026)
| Level | Base Salary Range | Total Compensation (est.) |
|---|---|---|
| Analyst | $85,000–$100,000 | $90,000–$108,000 |
| Consultant | $100,000–$134,000 | $110,000–$150,000 |
| Senior Consultant | $134,000–$198,000 | $150,000–$220,000 |
| Manager | $183,000–$285,000 | $200,000–$310,000 |
Data: Glassdoor (2,766 salaries as of Feb 2026), Wall Street Oasis, Fishbowl. EY-Parthenon pays at the top end of the Big 4 range.
EY-Parthenon Interview Process
EY-Parthenon interviews are structured around strategy-heavy cases with strong behavioral components. The typical process:
- Online application and screening — resume review; some offices use an online aptitude test
- First-round interviews — two case interviews and one behavioral interview, conducted by consultants or senior consultants
- Final round — two to three interviews mixing advanced case work with deeper culture and leadership questions at manager or partner level
EY-Parthenon cases lean toward M&A, market assessment, and portfolio strategy — reflecting the firm's PE client base. Expect more due diligence and investment framing than operations or IT transformation cases.
See our EY-Parthenon case interview guide for firm-specific practice cases.
EY-Parthenon Culture and Strengths
EY-Parthenon's culture combines the analytical rigor of a strategy boutique with the resources and industry access of a global professional services firm. The private equity orientation means you will work on deal timelines — which are non-negotiable — and develop strong skills in financial modeling, commercial due diligence, and investment thesis development.
The 2025 expansion into a 25,000-person organization creates new career mobility: EY-Parthenon consultants can now move into EY's broader transactions, restructuring, or sector advisory practices without leaving the brand. For candidates who want the optionality of a large firm with the intellectual environment of a strategy boutique, this is a meaningful differentiator versus Deloitte or KPMG.
KPMG Consulting
KPMG is the smallest of the Big 4, reporting $39.8 billion in global revenue for FY2025 (ended September 30, 2025) and employing 276,030 people worldwide. Despite its smaller scale, KPMG consulting is a serious employer — particularly in regulated industries where its audit relationships create natural consulting adjacencies.
What KPMG Consulting Does
Unlike Deloitte's Monitor or PwC's Strategy&, KPMG built its strategy consulting practice in-house through the KPMG Global Strategy Group rather than acquiring an established boutique. This shapes the culture: KPMG consulting tends to be more integrated with its audit and tax practices, which can be a strength in client contexts where regulatory knowledge matters.
KPMG Advisory is organized around:
- Management Consulting — operating model, cost transformation, technology advisory
- Deal Advisory — M&A strategy, valuation, due diligence, integration support
- Risk Consulting — compliance, regulatory risk, cybersecurity, ESG
- Technology Consulting — cloud, ERP implementation, data and analytics
Key industries: financial services (banking, insurance), government, healthcare, energy and utilities.
KPMG Consulting Salary by Level (US, 2025–2026)
| Level | Base Salary Range | Total Compensation (est.) |
|---|---|---|
| Associate | $68,000–$97,000 | $75,000–$108,000 |
| Consultant | $91,000–$130,000 | $100,000–$145,000 |
| Senior Consultant | $104,000–$143,000 | $115,000–$160,000 |
| Manager | $149,000–$223,000 | $165,000–$245,000 |
| Director | $247,000–$400,000 | $280,000–$450,000 |
Data: Levels.fyi, ZipRecruiter, Management Consulted (2025–2026).
KPMG Consulting Interview Process
KPMG's interview process has the most distinctive format of the four firms. It includes a "Virtual Launch Pad" assessment that no other Big 4 firm uses at the same scale.
Typical four-stage process:
- Online application — resume and cover letter screen
- 90-minute hypothetical business assessment — scenario-based questions about transforming a small business; a calculator is provided; this tests quantitative reasoning and structured thinking
- 60-minute written and video assessment — firm- and role-specific questions combining written analysis with short video responses
- Virtual Launch Pad — a three-hour virtual exercise involving a group simulation, firm information sessions, and live assessment activities evaluated by KPMG assessors
The Virtual Launch Pad replaces the traditional partner interview at many KPMG offices. It's collaborative by design — assessors watch how candidates interact with peers, not just how they solve problems individually.
Big 4 vs MBB: Which Is Better?
This question comes up constantly. The honest answer: it depends on what you're optimizing for.
Salary Comparison
| Level | MBB (US) | Big 4 Consulting (US) | Premium |
|---|---|---|---|
| Analyst / BA (pre-MBA) | $120,000–$135,000 base | $85,000–$100,000 base | MBB +30–40% |
| Associate (MBA hire) | $190,000–$192,000 base | $85,000–$110,000 base | MBB +75–100% |
| Manager | $220,000–$280,000 | $148,000–$227,000 | MBB +20–50% |
| Partner | $500,000–$1.5M+ | $300,000–$700,000 | MBB +30–100% |
MBB figures: MyConsultingOffer, Management Consulted (2025). Big 4 figures are ranges across all four firms.
The salary gap is significant and persistent. MBB has not raised starting compensation in three consecutive years (2023–2025), but the absolute differential versus Big 4 has not closed.
What Each Path Offers
| Dimension | MBB | Big 4 Consulting |
|---|---|---|
| Brand prestige (strategy) | Higher | Lower (except Strategy&, EY-P) |
| Entry difficulty | Harder (1–3% acceptance) | Easier (8–15% acceptance) |
| Starting salary | ~$130,000–$135,000 | ~$85,000–$100,000 |
| Work-life balance | Demanding | More predictable at most levels |
| Technology work | Limited | Significant (especially Deloitte) |
| Breadth of services | Narrow (strategy only) | Wide (audit, tax, risk, tech) |
| Exit opportunities | PE, corp dev, C-suite fast | Corp strategy, ops, tech industry |
| MBA sponsorship | Common | Less common |
For candidates interested in pure strategy — board-level corporate strategy, growth strategy, private equity due diligence — MBB is the higher-prestige path and the more direct route to top-tier consulting exit opportunities. McKinsey, BCG, and Bain alumni networks remain the most powerful in the industry for placing consultants into private equity, C-suite roles, and venture capital.
For candidates interested in technology transformation, operations, risk, or regulated industry advisory, Big 4 firms offer comparable technical depth and better work-life balance. PwC Strategy& and EY-Parthenon specifically are credible alternatives to MBB for strategy work, at compensation that is now approaching MBB levels at senior grades.
For a deeper look at how the overall landscape maps, see our management consulting firms ranking and what is consulting overview.
Which Big 4 Firm Should You Target?
If you're choosing between the four firms, here's a practical decision framework:
- Target Deloitte if you want the broadest platform, the largest consulting headcount, and strong options in technology consulting (Deloitte Digital, cloud, AI transformation). Deloitte's Monitor practice is also a credible path for strategy-focused candidates who don't land MBB.
- Target PwC / Strategy& if you want to do pure strategy work within a Big 4 environment. Strategy& is the most MBB-adjacent option and offers compensation that converges with Bain and BCG at senior levels. Financial services is a particular strength.
- Target EY-Parthenon if you're interested in M&A, private equity, or transaction strategy. The 2025 expansion makes it the largest strategy practice at any Big 4, and the $250M AI investment signals where the firm is building. Strong for candidates coming from finance or investment banking.
- Target KPMG if you're interested in regulated industries, government consulting, or risk advisory. KPMG's smaller consulting headcount means more direct access to senior mentorship early in your career.
How to Get a Big 4 Consulting Offer
The Big 4 recruit at scale — combined they hire thousands of consultants annually — but the process still eliminates most candidates at the case interview stage.
Application Funnel
- Resume screen — target GPA above 3.5, internship experience, and clear articulation of why consulting
- Online assessments — numerical reasoning, situational judgment; KPMG and Deloitte use these most heavily
- First-round case interviews — typically 1–2 cases per round; this is where most candidates are cut
- Final-round interviews — more senior interviewers, written cases (at Strategy&), and culture/fit depth
What Actually Matters
The single biggest differentiator at the case interview stage is structured thinking under pressure — not pre-memorized frameworks. Big 4 interviewers are looking for:
- A clear problem decomposition before diving into analysis
- Comfort with rough quantitative estimates (market sizing, break-even, profitability math)
- An ability to synthesize data into a recommendation, not just describe findings
- Genuine curiosity about the business problem, not performance of curiosity
The behavioral component is more heavily weighted at Big 4 firms than at MBB. Interviewers at Deloitte, PwC Advisory, and KPMG will probe for teamwork, stakeholder management, and examples of navigating ambiguity — reflecting the collaborative, multi-disciplinary client engagements these firms run. At EY-Parthenon and Strategy&, behavioral questions focus more on leadership and influence, closer to the MBB standard.
One practical edge: Big 4 recruiting teams are more accessible than MBB. If you can connect with a recruiter or consultant at a target firm — through on-campus events, LinkedIn outreach, or a mutual connection — the referral channel matters more at Big 4 than at McKinsey, where hiring decisions are almost entirely case-driven.
For a full breakdown of what case interviews are and how to prepare, start with our case interview guide, then work through firm-specific prep for whichever firm you're targeting.
Timeline and Recruiting Cycles
Big 4 firms recruit on two main cycles in the US:
- Full-time hiring: September–December for start dates the following summer
- Summer internship recruiting: October–January for MBAs; varies for undergraduates
OCR (on-campus recruiting) at target schools runs earlier. Off-cycle and experienced-hire recruiting happens year-round.
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Try a free caseConsulting Career Path and Progression
All four firms share a broadly similar career ladder for consulting:
Analyst / Business Analyst → Consultant → Senior Consultant → Manager → Senior Manager → Director → Partner
Promotion timelines differ: at MBB, strong performers move from analyst to consultant in 2 years; at Big 4, the typical cadence is 2–3 years per level. The path to partner is 10–15 years at both, though Big 4 partnerships are somewhat larger and admission somewhat less selective.
For a full breakdown of timelines, compensation growth, and what drives promotion decisions, see our consulting career path and consulting salary guide.
Frequently Asked Questions
What are the Big 4 consulting firms? The Big 4 consulting firms are Deloitte, PwC, EY, and KPMG. Each operates a consulting or advisory division as part of a broader professional services network that also includes audit, tax, and legal services.
Is Big 4 consulting the same as MBB? No. MBB (McKinsey, BCG, Bain) are pure strategy consulting firms. Big 4 firms are professional services networks where consulting is one of several divisions. MBB pays more, carries higher brand prestige for strategy roles, and has more selective recruiting. Big 4 firms offer more breadth, technology-adjacent work, and a more accessible entry path.
How much do Big 4 consultants earn? US entry-level Big 4 consultants earn approximately $85,000–$100,000 in base salary, rising to $148,000–$227,000 at manager level. PwC Strategy& and EY-Parthenon pay at the top of these ranges. Partners earn $300,000–$700,000+.
What is the Big 4 consulting interview format? All four firms use case interviews. Deloitte and KPMG are candidate-led; PwC Strategy& adds a written case component in final rounds; EY-Parthenon uses two cases plus a behavioral interview. Most processes run 2–3 rounds.
Which Big 4 firm is best for consulting? Deloitte has the largest consulting practice and strongest brand for technology and operations work. PwC Strategy& is closest to MBB in culture and compensation for pure strategy. EY-Parthenon is the largest Big 4 strategy practice after its 2025 expansion and is particularly strong for PE-adjacent work. KPMG is smaller but deep in regulated industries.
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