Top 5 Accounting Firms in the World

4. KPMG

2020 Revenue: $29.2 billion

KPMG was founded in 1987 through the merger of four leading accounting firms: Klynveld Main Goerdeler (KMG), Peat Marwick Mitchell (PMM), William Barclay Peat & Co., and Thompson McLintock & Co.

In the early years of the firm, KPMG focused on providing accounting and tax services to small and medium-sized businesses. Over time, the firm expanded its services and grew its client base to include larger organizations and multinational corporations.

Today, KPMG has a network of member firms in over 150 countries and provides a range of professional services including audit and assurance, tax compliance and advisory, consulting, and financial planning. The firm serves a wide variety of clients, including small and medium-sized enterprises, as well as large multinational corporations.