What Are The Big 4 Companies?

The “Big 4” refers to the four largest professional services firms in the world, primarily known for their accounting, auditing, consulting, and advisory services. These firms are:

1. Deloitte
   • Headquarters: London, UK
   • Services: Audit & Assurance, Consulting, Financial Advisory, Risk Advisory, Tax
   • Revenue (2023): Over $60 billion
2. PricewaterhouseCoopers (PwC)
   • Headquarters: London, UK
   • Services: Audit & Assurance, Consulting, Tax, Legal Services, Advisory
   • Revenue (2023): Over $50 billion
3. Ernst & Young (EY)
   • Headquarters: London, UK
   • Services: Assurance, Consulting, Tax, Strategy and Transactions
   • Revenue (2023): Over $45 billion
4. KPMG
   • Headquarters: Amstelveen, Netherlands
   • Services: Audit & Assurance, Tax, Advisory, Consulting
   • Revenue (2023): Over $35 billion

These firms dominate the professional services industry, offering a broad range of services across industries and markets worldwide. They employ hundreds of thousands of professionals and have offices in multiple countries.