Big Four
Big Four is the largest four accounting firms in the world: Deloitte, EY, KPMG, and PriceWaterhouseCoopers.
Definitions
According to Managerial Accounting by Braun, Tietz (5th edition),
- Big Four. The largest four accounting firms in the world: Deloitte, EY, KPMG, and PriceWaterhouseCoopers.