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 (Ernst & Young, KPMG. Deloitte and PwC) amounted to more than 134 billion U.S. dollars in 2017.

According to revenue figures from 2017, Deloitte was the biggest of the four companies, with around 38.8 billion U.S. dollars in revenue for that year. PricewaterhouseCoopers (PwC) also generated almost 37.7 billion U.S. dollars in revenue in 2017. Ernst & Young and KPMG, also high rollers in the industry, generated 31.4 and 26.4 billion U.S. dollars in revenue respectively. The Big Four generate the largest share of their revenue through their audit/assurance branches.

Each of these four firms employs more than 190,000 people a piece. Deloitte has the most employees at approximately 263,900 and KPMG has the fewest with around 197,000 employees.

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.
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Worldwide revenue of Deloitte

38.8bn USD

Aggregated gross revenues of PwC

37.7bn USD
Deloitte
Worldwide revenue of Deloitte 38.8bn USD Deloitte's worldwide revenue in the Americas 20.4bn USD Number of employees of Deloitte worldwide 263,900 Deloitte's revenue in the U.S. 18.55bn USD

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PricewaterhouseCoopers
Aggregated gross revenues of PwC 37.7bn USD Aggregated revenue of PwC's assurance services 15.97bn USD Number of PwC assurance employees 103,019 Number of PwC employees in Western Europe 72,665
KPMG
Revenue of KPMG worldwide 26.4bn USD Global revenue of KPMG from audits 10.39bn USD KPMG's revenue in EMEA 11.5bn USD Number of KPMG employees in the Americas 55,856
Ernst & Young
Combined revenue of EY 31.4bn USD Combined global revenue of EY's assurance services 11.63bn USD Number of EY employees in EMEIA 124,296 Revenue of EY in the Americas 14.51bn USD

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Deloitte
Worldwide revenue of Deloitte 38.8bn USD Deloitte's worldwide revenue in the Americas 20.4bn USD Number of employees of Deloitte worldwide 263,900 Deloitte's revenue in the U.S. 18.55bn USD

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Banking & Finance in the U.S. 2018

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PricewaterhouseCoopers
Aggregated gross revenues of PwC 37.7bn USD Aggregated revenue of PwC's assurance services 15.97bn USD Number of PwC assurance employees 103,019 Number of PwC employees in Western Europe 72,665
KPMG
Revenue of KPMG worldwide 26.4bn USD Global revenue of KPMG from audits 10.39bn USD KPMG's revenue in EMEA 11.5bn USD Number of KPMG employees in the Americas 55,856
Ernst & Young
Combined revenue of EY 31.4bn USD Combined global revenue of EY's assurance services 11.63bn USD Number of EY employees in EMEIA 124,296 Revenue of EY in the Americas 14.51bn USD

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