Top 10: Financial Consulting Brands

Finance leaders have rarely leaned harder on outside advice, and AI is driving the spend. 

Gartner reports that 59% of CFOs and senior finance leaders used AI in the finance function in 2025, and nearly six in 10 plan to lift that investment by at least 10% in 2026.

That money is swelling the firms selling the roadmaps. 

Finance Chief looks at 10 consulting brands shaping how finance functions are run, ranked by latest reported global revenue, which for the Big Four spans audit, tax and advisory, lifting the giants above the pure strategy firms

10. Oliver Wyman

Revenue: US$3.6bn
CEO: Ted Moynihan

Oliver Wyman, now trading as a Marsh business after its parent unified its brands this year, remains the strategy house with the deepest financial services bench. Its finance and treasury practice spans finance transformation, capital and liquidity management and stress testing for most of the world’s largest financial institutions.

Ted Moynihan, a 30-year veteran of the firm, became CEO in April, with revenue up 6% in 2025 inside parent Marsh’s US$27bn group result.

9. FTI Consulting

Revenue: US$3.79bn
CEO: Steven Gunby

FTI Consulting is the name boards call when the numbers turn ugly. The NYSE-listed firm leads global bankruptcy and restructuring league tables and was named Global Turnaround Consulting Firm of the Year for a 10th time in 2025.

Corporate finance and forensic work drove a record year, and the firm tops the Lexology Index 2026 restructuring list with 37 professionals recognised. Chairman, President and CEO Steven Gunby has extended his contract through to 2029.

8. Bain & Company

Revenue: US$7bn 
CEO: Christophe De Vusser

Bain & Company keeps its accounts private, though Consultancy.org estimates the firm has roughly doubled in size since 2018. Christophe De Vusser, the first European to serve as worldwide managing partner and CEO, took office in July 2024.

Under him, Bain has expanded its lead global partnership with Palantir to push AI-powered cost and decision-making programmes, backed by more than 1,500 AI, data and engineering specialists. That capability targets the forecasting and performance-improvement work that made Bain’s name.

7. Boston Consulting Group

Revenue: US$14.4bn
CEO: Christoph Schweizer

BCG grew 7% in 2025, its 22nd consecutive year of expansion, and Bloomberg reports client work on AI, from strategy to building tools, generates about a quarter of its revenue.

The real draw is the firm's Center for CFO Excellence, which pairs corporate finance strategy with the build muscle of BCG X. CEO Christoph Schweizer launched the unit to design and ship technology rather than just recommend it, channelling AI into cost programmes and capital allocation.

6. Mckinsey & Company

Revenue: US$16bn​​​​​​​
CEO: Bob Sternfels

A century old this year, McKinsey has remade itself around AI. Its finances stay private, but the Financial Times reports a headcount cut of about 10%, to around 40,000, the biggest in its history. Global Managing Partner Bob Sternfels leads the shift.

QuantumBlack drives client work, while internal platform Lilli reaches nearly three-quarters of employees and fields hundreds of thousands of prompts a month. That machinery targets the cost, capital and growth questions that define its CFO work.

5. KPMG

Revenue: US$39.8bn
CEO: Bill Thomas

KPMG grew revenue 5.1% in FY2025 and has committed US$2bn to its Microsoft alliance, a bet the firm projects could unlock US$12bn in growth.

Its Workbench platform coordinates AI agents across audit, tax and advisory, where tax and legal grew 7.5% on demand for AI-enabled managed services. In 2026 KPMG extended Microsoft 365 Copilot to its entire global workforce. Global

4. EY

Revenue: US$53.2bn
CEO: Janet Truncale

EY's consulting line contributed US$16.4bn in FY2025, growing 5.2%, with its EY-Parthenon strategy arm adding a further US$6.2bn. Janet Truncale, the first woman to lead a Big Four firm globally, has built that growth around EY.ai, the firm's AI platform.

It rests on a US$1.4bn investment and includes EY's own large language model, EYQ. The strategy is to fold AI through audit, tax and advisory rather than sell it as a standalone service.

3. PwC

Revenue: US$56.9bn
CEO: Mohamed Kande

Advisory is PwC’s engine room, generating US$24.3bn in FY2025, more than two-fifths of everything the firm earns. Global Chairman Mohamed Kande put US$1.5bn into AI during the year and launched agent OS in March 2025.

The orchestration platform connects AI agents across Anthropic, OpenAI, Microsoft, SAP and Workday systems for enterprise clients. The pitch is enterprise-wide automation that finance functions can plug into directly.

2. Accenture

Revenue: US$69.7bn
CEO: Julie Sweet

Accenture booked US$5.9bn in Gen AI bookings in FY2025, the clearest evidence yet of where consulting demand is heading.

Chair and CEO Julie Sweet has scrapped the firm's decades-old structure to rebuild around AI. She has fused its strategy, consulting, technology, operations and Song units into a single division called Reinvention Services, at a cost of US$923m in restructuring charges, and installed Manish Sharma as Accenture's first Chief Services Officer.

The bet is that clients want reinvention faster than a traditional consulting model can deliver. “Our clients need more value faster, and Accenture is their reinvention partner of choice,” says Julie. With around 784,000 people, the firm is retraining its workforce at scale, and Fortune reports that promotions are now tied to AI fluency.

1. Deloitte

Revenue: US$70.5bn​​​​​​​
CEO: Joe Ucuzoglu

Deloitte tops this table on two counts, with the largest revenue of any professional services firm and, by Brand Finance's reckoning, the most valuable commercial services brand.

Global CEO Joe Ucuzoglu has committed US$3bn to gen AI through FY2030. An alliance with Anthropic is rolling Claude out to its entire global workforce, in what CNBC reports is Anthropic's largest enterprise deployment. Its AI Advantage for CFOs offering, built with AWS and Anthropic, aims that firepower at finance.

No brand in consulting is betting harder on AI, and the rest of this table is chasing it.