Visualizing the Revenue of the Big Four Accounting Firms


This post is by Marcus Lu from Visual Capitalist


See this visualization first on the Voronoi app.

Donut chart showing revenue of the top four accounting firms.

Visualizing the Revenue of the Big Four Accounting Firms

This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources. The Big Four accounting firms – Deloitte, Ernst & Young (EY), PricewaterhouseCoopers (PwC), and KPMG – have solidified their positions as global industry leaders, boasting a combined revenue exceeding $200 billion in 2023. Together, these firms audit the majority of publicly traded companies worldwide. This infographic details the revenues of the “Big Four” accounting firms for the fiscal year 2023, based on data from Statista.

Deloitte Leads the Big Four in 2023 Revenues

Offering diverse services, the Big Four specialize in auditing and assurance, ensuring financial transparency, and regulatory compliance for their clients. Additionally, they provide strategic consulting services. All four are legally headquartered in the UK and command a dominant global market share.
CompanyAuditing & AssuranceConsultingTaxOtherTotal ($ billions)
Deloitte$20.1$29.6$10.3$5.1$65.1
PwC$18.7$22.6$11.8$53.1
EY$15.1$16.1$12.1$6.1$49.4
KPMG$12.6$15.9$7.9$36.4
Interestingly, the largest accounting firms were formerly known as the “Big Eight,” but mergers and closures starting in the late 1980s have reduced their number to four. The original group consisted of Arthur Andersen, Arthur Young, Coopers & Lybrand, Deloitte Haskin & Sells, Ernst & Whinney, Peat Marwick Mitchell, Price Waterhouse, and Touche Ross, all headquartered in (Read more…)