What is Big 4 (Final 4)? - Definition from Whatis.com

The Big 4, also known as the Final 4, are the four largest international accounting and professional services firms. The Big 4 audit the majority of all publicly-traded companies. PricewaterhouseCoopers, Ernst & Young, Deloitte Touche Tohmatsu and KPMG make up the Big Four.

This was last updated in October 2009

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