Top 5 Accounting Firms in the World

1. Deloitte

2020 Revenue: $46.2 billion

Topping the list of the top accounting firms in the world is Deloitte, a global professional services firm that was founded in London in 1845 by William Welch Deloitte. Initially, the firm focused on providing accounting services to businesses, and it quickly established itself as a leader in the field.

Over the years, Deloitte has expanded its services to include a wide range of professional services, including assurance (including financial audit), consulting, tax, and advisory services. The firm has a strong presence in a variety of industries, including financial services, technology, and healthcare.

In 1989, Deloitte merged with Haskins & Sells, a New York-based accounting firm, to form Deloitte & Touche. The merged firm became known as Deloitte in 2003. Today, Deloitte is one of the “Big Four” accounting firms, along with PwC, EY, and KPMG, and is one of the largest professional services firms in the world, with a presence in over 150 countries.

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