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

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 157 billion U.S. dollars in 2020.

According to revenue figures from 2020, Deloitte was the biggest of the four companies, with around 47.6 billion U.S. dollars in revenue for that year. PricewaterhouseCoopers (PwC) generated almost 43 billion U.S. dollars in revenue in 2019. Ernst & Young (EY) and KPMG, also high rollers in the industry, generated 37.2 and 29.22 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 335,000, whereas KPMG has the fewest with around 227,000 employees.

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PricewaterhouseCoopers

KPMG

Ernst & Young

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"Big Four" accounting firms

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

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 157 billion U.S. dollars in 2020.

According to revenue figures from 2020, Deloitte was the biggest of the four companies, with around 47.6 billion U.S. dollars in revenue for that year. PricewaterhouseCoopers (PwC) generated almost 43 billion U.S. dollars in revenue in 2019. Ernst & Young (EY) and KPMG, also high rollers in the industry, generated 37.2 and 29.22 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 335,000, whereas KPMG has the fewest with around 227,000 employees.

Interesting statistics

In the following 5 chapters, you will quickly find the {amountStatistics} most important statistics relating to "Audit/Accounting firms - the Big Four".

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