Accounting Firms – The Big 4: Deloitte, PwC, EY, and KPMG
The Big 4 accounting firms are the four largest professional services networks globally: Deloitte, PricewaterhouseCoopers (PwC), Ernst & Young (EY), and KPMG, offering audit, tax, consulting, and advisory services, auditing the vast majority of public companies and employing millions worldwide, forming the pinnacle of the accounting and consulting industry.