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🌍 Top 10 Global Accounting & Auditing Firms (2025)
Rank | Firm Name | Revenue (USD) | Employees | Headquarters | Key Services |
1 | Deloitte | $67.2B | 460,300 | London, UK | Audit, Consulting, Tax, Risk Advisory, Legal |
2 | PwC | $55.4B | 370,000 | London, UK | Audit, Tax, Consulting, Legal, ESG Advisory |
3 | EY | $51.2B | 392,995 | London, UK | Audit, Tax, Consulting, Strategy, AI & Technology Solutions |
4 | KPMG | $38.4B | 275,288 | London, UK | Audit, Tax, Legal, ESG, Technology, Advisory |
5 | BDO | $14.0B | 115,600 | Brussels, BE | Audit, Tax, Advisory, Risk, Corporate Finance |
6 | RSM | $10.0B | 57,000 | London, UK | Audit, Tax, Consulting, Risk, Outsourcing |
7 | Grant Thornton | $8.0B | 56,000 | London, UK | Audit, Tax, Advisory, ESG, Forensic Services |
8 | Crowe | $5.8B | 42,000 | Chicago, USA | Audit, Tax, Consulting, Forensic, Risk Advisory |
9 | Baker Tilly | $5.6B | 43,000 | London, UK | Audit, Tax, Legal, Consulting, Corporate Finance |
10 | Mazars | $5.2B | 42,000 | Paris, FR | Audit, Tax, Advisory, Legal, ESG, Technology Solutions |
🔍 Firm Highlights
- Deloitte: The largest global accounting firm by revenue, Deloitte offers a comprehensive range of services, including audit, consulting, tax, risk advisory, and legal services. With a workforce of over 460,000 employees, Deloitte operates in more than 150 countries .Wikipedia
- PwC (PricewaterhouseCoopers): PwC provides services in audit, tax, consulting, legal, and ESG advisory. It employs approximately 370,000 people globally and is known for its strong presence in various industries, including financial services and technology .
- EY (Ernst & Young): EY offers services in audit, tax, consulting, strategy, and AI & technology solutions. With nearly 393,000 employees, EY has made significant investments in artificial intelligence and technology transformation .Business Insider
- KPMG: KPMG provides audit, tax, legal, ESG, technology, and advisory services. It has approximately 275,000 employees and has shown strong revenue growth, particularly in its audit and tax units .Financial Times
- BDO: BDO is a global network offering audit, tax, advisory, risk, and corporate finance services. With over 115,000 employees, BDO has a strong presence in Europe and the Americas .The Big 4 Accounting Firms
- RSM: RSM provides audit, tax, consulting, risk, and outsourcing services. It employs around 57,000 people and has a significant presence in the UK and Europe .The Big 4 Accounting Firms+3Invoicera+3Wikipedia+3
- Grant Thornton: Grant Thornton offers audit, tax, advisory, ESG, and forensic services. With approximately 56,000 employees, it has a strong presence in the UK and the Americas .
- Crowe: Crowe provides audit, tax, consulting, forensic, and risk advisory services. It employs about 42,000 people and has a significant presence in the United States .
- Baker Tilly: Baker Tilly offers audit, tax, legal, consulting, and corporate finance services. With 43,000 employees, it operates in over 140 countries .Wikipedia
- Mazars: Mazars provides audit, tax, advisory, legal, ESG, and technology solutions. It employs around 42,000 people and has a strong presence in Europe and Asia .The Big 4 Accounting Firms