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Deloitte - Statistics & Facts

Deloitte is 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 and employs over 334,000 people worldwide.

Since 2009, Deloitte increased its revenue year-on-year to 47.6 billion U.S. dollars in 2020. Deloitte was also the largest of the Big Four accounting firms worldwide that year. The success of Deloitte can in part be attributed to its dominance in the Americas. Compared to the other Big Four firms, Deloitte generated over 6.4 billion U.S. dollars more in revenue in the region than the second largest of the Big Four, PwC, in 2019, and twice as much as KPMG. Deloitte’s high revenue streams on the American continent are reflected in the United States as Deloitte was the largest accounting firm in the country.

Deloitte offers four main services - audit and enterprise risk services, consulting, tax and financial advisory. In 2020, 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 is also the fastest growing segment. The revenue generated by this service has increased from 4.5 billion U.S. dollars to around 19.8 billion U.S. dollars between 2006 and 2020.

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