5 Biggest Accounting Firms in the US

3. Ernst & Young LLP

Market Cap: N/A

Revenue Estimate (FY2023): $49.4 billion

Number of Employees: 395,442

Commonly known by its trade name EY, Ernst & Young LLP is another member of the Big Four accounting firms. This multinational professional services partnership is one of the oldest in the world, and offers specialized tax, consulting, assurance, and transaction services to clients across the globe. It has more than 700 office locations in around 150 countries around the world, and employs more than 395,442 individuals.