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Deloitte

deloitte.com · Accounting & audit firms · Advisory

Deloitte, officially known as Deloitte Touche Tohmatsu Limited, is a leading global professional services network headquartered in London, United Kingdom. Founded in 1845, it has grown to become the largest professional services firm in the world, employing over 470,000 professionals across more than 150 countries.

Company facts

Founded1845 (181 years)
Latest fundingOther
Employees476,000
HeadquartersLenexa, United States
Trusted networks on Proven2 investor, bank and government networks offer Deloitte to their members

Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.

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Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.