Deloitte - statistics & facts

Deloitte is a privately held company which is limited by guarantee. It is one of the largest accountancy and audit firms in the world and is included in the Big Four along with PricewaterhouseCooper (PwC), Ernst & Young (EY), and KPMG. The origin of the company dates back to 1845, when William Deloitte opened his first accounting office in London, England. Today, Deloitte is headquartered in New York City, and through a series of mergers is officially called Deloitte Touche Tohmatsu Limited (DTTL), but uses ‘Deloitte’ as its public brand name. The firm now operates in over 150 countries as its number of employees reached almost 457,000 people worldwide in 2023.

Growth upon growth

Since 2009, the revenue of Deloitte has increased year-on-year and totaled almost 65 billion U.S. dollars in 2023. Deloitte was also the largest of the Big Four accounting firms worldwide in 2023. The success of Deloitte can in part be attributed to its dominance in the Americas. Compared to the other Big Four firms, Deloitte generated almost seven billion U.S. dollars more revenue in this geographical region than the second largest of the Big Four in PwC, and more than twice as much as KPMG. The consistently high turnover of Deloitte within the American continent has been reflected in the United States, as Deloitte has routinely been the leading accounting firm by revenue in the country with the largest GDP in the world in 2022.

What does Deloitte consist of?

Deloitte offers four main service lines - audit and enterprise risk services, consulting, tax, and financial advisory. In 2023, the largest share of these service lines was held by the consulting segment, overthrowing the audit and risk advisory service line, which consistently generated the highest annual revenue up until 2016. The consulting service line has also been the fastest growing segment held by the firm. The revenue generated by this service grew from 4.5 billion U.S. dollars in 2006 to almost 30 billion U.S. dollars in 2023. Advisory and consulting was also the function with the highest revenue across the Big Four firms.
This text provides general information. Statista assumes no liability for the information given being complete or correct. Due to varying update cycles, statistics can display more up-to-date data than referenced in the text.
Published by Statista Research Department, Nov 16, 2023

Key insights

Revenue of the largest accounting firm in U.S.
27.94bn USD
Number of employees at Deloitte in the U.S.
156,397
Professionals employed at Deloitte in the U.S.
129,110
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Revenue of Deloitte worldwide from 2006 to 2023 (in billion U.S. dollars)

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Revenue of Deloitte worldwide 2006-2023

Revenue of Deloitte worldwide from 2006 to 2023, by service line (in billion U.S. dollars)

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Revenue of Deloitte worldwide by service line 2006-2023

Revenue of Deloitte worldwide from 2006 to 2023, by region (in billion U.S. dollars)

Business Services

Revenue of Deloitte worldwide by region 2006-2023

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"Big Four" accounting firms
"Big Four" accounting firms
Accounting services in the U.S.
Accounting services in the U.S.
EY (Ernst & Young)
EY (Ernst & Young)
PwC (PricewaterhouseCoopers)
PwC (PricewaterhouseCoopers)
KPMG
KPMG

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