The Big Four - additional information
The Big Four are the four global leaders in auditing and accounting. Deloitte, PricewaterhouseCoopers (PwC), Ernst and Young (EY), and KPMG together audit the majority of publicly traded companies worldwide. In 2022, Deloitte employed the largest number of people with approximately 412,000. Founded in London in 1845 and headquartered in New York today, the company employs the largest share of its staff in the Americas, closely followed by Europe, the Middle East and Africa. Combined, the Big Four employed almost 1.5 million people worldwide in 2022.
Deloitte was the largest auditing firm out of the four in terms of revenue in 2022, with PwC generating approximately five billion U.S. dollars less.