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Deloitte generated a revenue of approximately **** billion U.S. dollars worldwide for the fiscal year ending 31 May 2025. This was an increase of roughly *** billion U.S. dollars when compared to the previous year. This meant that 2025 was the most profitable fiscal year ever for Deloitte. 

Deloitte - additional information

Between 2009 and 2025, Deloitte’s revenue increased from **** billion U.S. dollars to **** billion U.S. dollars. The consistent revenue growth of the firm allowed Deloitte to become the largest of the Big Four firms. The Big Four also include PwC (PricewaterhouseCoopers), EY (Ernst & Young), and KPMG. PwC was the second largest of these firms in terms of revenue, which grossed around * billion U.S. dollars less than Deloitte. Deloitte operates in over 150 countries worldwide in the Americas, Europe, the Middle East and Africa (EMEA), and Asia-Pacific. Every year since 2006, around half of Deloitte’s total revenue was generated in the Americas. In 2024, the firm made almost ** billion U.S. dollars in revenue in the Americas. In the same year, the company’s revenue from the rest of the world combined was **** billion U.S. dollars. 

Deloitte - business units

Deloitte operates four main service lines - audit and enterprise risk services, consulting, tax and financial advisory. The consulting services segment had some of the largest revenue growth year-on-year since 2006. The consulting services line increased its revenues from *** billion U.S. dollars in 2008 to **** billion U.S. dollars in 2024. The second-largest revenue share comes from audit and assurance services, generating **** billion U.S. dollars in the same year.