What is the Big 4 accounting scandal?

Written by Editorial Team | Last Updated: August 2026

The "Big Four" accounting firms—Deloitte, Ernst & Young (EY), KPMG, and PwC—have collectively faced numerous historical and recent corporate scandals involving audit failures, professional misconduct, and massive regulatory fines. Notable historical examples include PwC's association with the collapse of Tyco and Satyam, Ernst & Young's failure to uncover fraud at HealthSouth and Wirecard, and KPMG's involvement in the scandal surrounding Collins & Aikman. These incidents frequently trigger intense regulatory scrutiny and governance reforms.

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