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Key Facts & Figures about the big 4 accounting firms
Big 4 Revenue
The big 4 accountancy firms together earned $154.8 billion in 2019.
The break out of the big four accounting firms in order :
Big Four Accounting Firms Number of Employees
The top four audit firms in the world employed 1.1 million in employees in 2019.
Number of Countries Where the Big Four CPA Firms Operate
Each of the top 4 cpa firms operates in over 150 countries.
The actual number of countries by firm is included below
Deloitte – 150 countries
PwC – 158 Countries
EY – Over 150 countries
KPMG – 154 countries
Where is each top 4 cpa firms headquartered?
EY is headquartered in London, UK
Deloitte is headquartered in London, UK
KPMG is headquartered in Amstelveen, Netherlands
PwC is headquartered in New York City, NY
History of the big 4 accounting firms
Each of the big 4 accounting firms was created by a series of mergers. In the list below we’ve included the earliest start date of the member firms of each big 4 firm, and we’ve also included the last date of significant merger for each top accounting firm.
EY History – The earliest founding date for a member firm is 1849. The last major merger for Ernst & Young was in 1989.
PwC History – The earliest founding date for a member firm of PwC was in 1914. The last major merger date for PwC was in 1998 when Pricewaterhouse merged with Coopers & Lybrand.
Deloitte History – The earliest founding date for a member firm of Deloitte was in 1849. The last major merger date for Deloitte was in 1989.
KPMG History – The earliest founding date for a member firm of KPMG was in 1891. The last major merger date for KPMG was in 1987.