The Big 4: An Overview of the World's Largest Accounting Firms
- Marcelo Serafim
- Mar 25
- 3 min read
Updated: Apr 2
The term "Big 4" refers to the four largest professional services firms in the world that specialize in audit, tax, consulting, and advisory services. These firms are Deloitte, PricewaterhouseCoopers (PwC), Ernst & Young (EY), and KPMG. They dominate the global accounting industry and provide services to major corporations, governments, and financial institutions worldwide.