: Consistently one of the top two, with 2021 revenues around $45 billion.
: Earned roughly $40 billion in 2021 and is known for strong tax and transaction advisory. so big 4
As of early 2026, these firms collectively generate over in annual revenue and employ more than 1.5 million professionals globally. : Consistently one of the top two, with
: Often ranked first by revenue, earning approximately $50 billion in 2021 . : Often ranked first by revenue, earning approximately
: Beyond standard accounting, they offer digital transformation, cybersecurity, valuation, and risk management across more than 150 countries. Career & Lifestyle Impact
The phrase "" typically refers to the four largest professional services networks in the world: Deloitte, PwC (PricewaterhouseCoopers), EY (Ernst & Young), and KPMG. These firms dominate the global market for auditing , tax, consulting, and advisory services. The Core Firms