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Revenue of the Big Four accounting / audit firms worldwide in 2019

With total revenue of approximately 46.2 billion U.S. dollars, Deloitte was the biggest of the Big Four accounting firms in 2019. The combined revenue of the firms increased by around four percent between 2018 and 2019, exceeding 150 billion U.S. dollars for the first time.

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 2019, whereas PwC and EY received most of their revenue from auditing services.

How many employees do the Big Four have?

The three biggest companies generated most of their revenue in the region of the Americas – KPMG’s largest region was its network of firms in Europe, the Middle East, and Africa (including India). The United States remains a major market for all four firms, and Deloitte generated nearly half of its total revenue in the country in 2019. In terms of the number of employees, the four firms had a combined global workforce of more than one million people, with Deloitte once again leading the way in 2019.

Revenue of the Big Four accounting / audit firms worldwide in 2019

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Sources

Release date

December 2019

Region

Worldwide

Survey time period

2019

Supplementary notes

Fiscal years: Deloitte ends May 31; PwC and EY end June 30; KPMG ends September 30.

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