Big Four accounting firms revenue 2023 | Statista (2024)

With a total revenue of almost 65 billion U.S. dollars, Deloitte was the largest of the Big Four accounting firms in 2023. The combined revenue of the firms increased steadily in the last decade and exceeded 200 billion U.S. dollars in 2023.

The Big Four accounting firms

The leading accounting firms in the world are Deloitte, PricewaterhouseCoopers (PwC), Ernst & Young (EY), and Klynveld Peat Marwick Goerdeler (KPMG). The firms provide their clients with various professional services that include auditing, corporate finance, and legal advice. Consulting revenue accounted for around 40 percent of Deloitte’s record total in 2023, whereas PwC and EY received most of their revenue from auditing services.

International firms with workforces to match

When broken down by geographical region, the three biggest firms generated most of their revenue in the Americas region – KPMG’s most lucrative region was its network of firms in Europe, the Middle East, and Africa (including India). The United States has remained a major market for all four firms, where Deloitte generated nearly half of its total revenue in 2023. In terms of the number of employees, the four firms had a combined global workforce of more than one million people, as Deloitte once again led the way in 2023.

Big Four accounting firms revenue 2023 | Statista (2024)


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