Audit/Accounting firms - the Big Four - Statistics & Facts

Published by E. Mazareanu, Jan 3, 2019
The term "Big Four", in relation to auditing and accounting, refers to the four major professional services networks specializing in accountancy and professional services. The Big Four companies serve as auditors for the majority of publicly traded companies, and deal with a number of private companies as well. The combined revenue of the Big Four (EY, KPMG. Deloitte and PwC) amounted to more than 148 billion U.S. dollars in 2018.

According to revenue figures from 2018, Deloitte was the biggest of the four companies, with around 43.2 billion U.S. dollars in revenue for that year. PricewaterhouseCoopers (PwC) generated almost 41.3 billion U.S. dollars in revenue in 2018. Ernst & Young (EY) and KPMG, also high rollers in the industry, generated 34.8 and 29 billion U.S. dollars in revenue respectively. PwC and EY generate the largest share of their revenue through their audit/assurance branches, while Deloitte and KPMG generate the largest share of their revenue through their advisory/consulting branches.

Each of these four firms employs more than 200,000 people a piece. Deloitte has the most employees at approximately 286,200 and KPMG has the fewest with around 207,000 employees.

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"Big Four" accounting firms

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PricewaterhouseCoopers

KPMG

Ernst & Young

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