Accounting Firm Rankings

Top Accounting Firms in 2025

The accounting industry is dominated by the “Big Four” firms, which consistently lead in terms of revenue and global presence. As of 2025, these firms are ranked as follows:

1. Deloitte

   • Revenue: $67.2 billion
   • Employees: Approximately 457,000
   • Overview: Deloitte maintains its position as the largest accounting firm globally, offering a wide range of services including audit, consulting, financial advisory, risk management, and tax services.
     big4accountingfirms.com

2. PwC (PricewaterhouseCoopers)

   • Revenue: $55.4 billion
   • Employees: Around 364,000
   • Overview: PwC is renowned for its audit and assurance services, as well as its consulting and tax advisory expertise. The firm has a significant global footprint, serving clients across various industries.
     big4accountingfirms.com

3. EY (Ernst & Young)

   • Revenue: $51.2 billion
   • Employees: Approximately 365,399
   • Overview: EY offers services in assurance, consulting, strategy and transactions, and tax. The firm emphasizes innovation and has invested heavily in technology and digital transformation.
     big4accountingfirms.com

4. KPMG

   • Revenue: $38.4 billion
   • Employees: Around 275,000
   • Overview: KPMG provides audit, tax, and advisory services. The firm has shown notable growth, particularly in its audit and tax divisions, and continues to invest in technology and training.
     ft.com

Beyond the Big Four, several mid-tier firms have demonstrated significant growth and are making notable contributions to the industry:

• Baker Tilly

  • Revenue: Over $5 billion
  • Overview: Baker Tilly has solidified its position among the top 10 accounting firms worldwide. The firm focuses on providing specialized services and maintains a strong mid-tier presence, differentiating itself through a people-first culture and flexible work environment.
    businessinsider.com

• Moore Global

  • Revenue: $5.1 billion
  • Overview: Moore Global reported record revenues, driven by organic growth and private equity investments in its member firms. The network focuses on serving small and medium-sized businesses, with significant growth in accounting services, tax practices, and advisory divisions.
    thetimes.co.uk

These firms, among others, continue to shape the accounting landscape through strategic investments, technological advancements, and a commitment to client service.