The Big 4 Apr 2026

While they are often referred to as "accounting firms," they have evolved into diversified global giants that dominate not only auditing but also management consulting, tax advisory, and risk management. The Four Pillars

Each firm operates as a network of independently owned and managed entities that share a common brand, quality standards, and intellectual property. The Big 4 Accounting Firms: An Overview - Investopedia The Big 4

The "Big 4" is the common moniker for the world's four largest professional services networks: , PwC (PricewaterhouseCoopers), EY (Ernst & Young), and KPMG . While they are often referred to as "accounting