Deloitte vs KPMG
Side-by-side comparison of AI visibility scores, market position, and capabilities
London global professional services (largest Big 4) at $70.5B FY2025 revenue (+4.8%); Anthropic strategic alliance with Scout AI tool and 460,000 employees serving 90% Fortune 500 competing with PwC and Accenture for consulting and audit mandates.
About
Deloitte Touche Tohmatsu Limited (DTTL) is a London, England-headquartered global professional services network — operating as the world's largest professional services firm by revenue, reporting $70.5 billion in aggregate global revenue for fiscal year 2025 (ended May 31, 2025, +4.8% in local currency) with approximately 460,000 employees across 150+ countries — providing audit and assurance, consulting, tax and legal, risk advisory, and financial advisory services to nearly 90% of the Fortune 500 and 8,500+ US private companies. Consulting represents 40%+ of total revenue as Deloitte's largest service line. Global CEO Joseph Ucuzoglu has led the firm since January 2023. Key AI initiatives include the strategic alliance with Anthropic (using Claude for client engagements and internal operations), the Scout AI research tool for client strategy engagements, and $2+ billion in AI capability investment. Founded with roots to 1845 when William Welch Deloitte opened his London accounting office; modern Deloitte formed through the 1989 merger of Deloitte Haskins & Sells with Touche Ross.
Big Four professional services network at $38.4B FY2024 revenue (+5.4%, highest Big Four growth); CEO Bill Thomas with KPMG Clara AI audit, $100M Google Cloud investment, and Hippocratic AI partnership across 143 countries.
About
KPMG is a global professional services network — registered in the Netherlands and headquartered in Amsterdam — operating as one of the Big Four accounting and consulting firms with 275,288 employees across 143 countries and over 90 offices in the United States alone. In fiscal year 2024, KPMG achieved record global revenue of $38.4 billion, representing 5.4% growth in US currency — the highest year-over-year revenue growth rate among the Big Four firms. All three core service lines achieved growth, led by tax and legal services at 9.9% growth. Under Global Chairman and CEO Bill Thomas (since 2017), KPMG has invested $100 million in its Google Cloud practice and launched KPMG Clara (its smart audit platform powered by AI), acquired LlamaZOO for 3D visualization capabilities, and partnered with Microsoft, Google Cloud, and Hippocratic AI for healthcare AI. KPMG has earned a place on Fortune's 100 Best Companies to Work For list for 18 consecutive years. The modern KPMG firm formed on January 1, 1987, when Peat Marwick merged with Klynveld Main Goerdeler (KMG) in what was then the largest accounting merger in history with combined worldwide revenues of $2.7 billion, honoring founding partners Klynveld, Peat, Marwick, and Goerdeler.
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