Deloitte
Sign in to saveDeloitte is a multinational professional services network based in London, England. It is the largest professional services network in the world by revenue and number of employees, and is one of the Big Four accounting firms, along with EY, KPMG, and PwC. The Deloitte network is composed of member firms of Deloitte Touche Tohmatsu Limited ( ) a private company limited by guarantee incorporated in England and Wales.
Key facts
- Company.name
- Deloitte Touche Tohmatsu Limited
- Company.logo
- Logo of Deloitte.svg
- Company.logo_upright
- 1.05
- Company.trade_name
- Deloitte
- Company.type
- Private company limited by guarantee
- Company.foundation
- in London, England
- Company.founder
- William Welch Deloitte
- Company.location
- London, England, UK
- Company.area_served
- Worldwide
- Company.key_people
- Anna Marks (Chairperson Deloitte Global)Joseph B. Ucuzoglu (CEO Deloitte Global)
- Company.industry
- Professional services
- Company.revenue
- US$70.5 billion (2025)
- Company.num_employees
- 470,000 (2025)
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Article
47 sectionsContents
- History
- Early history
- Recent history
- Name and branding
- Legal structure
- Services
- Audit
- Consulting
- Financial advisory
- Tax and legal
- GovLab
- Offices
- Operations in India
- Awards and recognition
- Litigation and regulatory action - auditing
- 1MDB scandal
- Adelphia Communications
- Autonomy
- Banro Corporation audit independence fine
- Bondfield Construction
- Carillion
- China Huarong Asset Management Co.
- Johnston Press audit
- Livent
- Mitie plc
- Philip Services Corp
- Serco Geografix Ltd.
- SIG plc
- Standard Chartered
- Steinhoff International
- Tingo
- Tongaat Hulett
- Litigation and regulatory action - consulting and oversight
- Bandar Malaysia Sdn Bhd
- Canadian Bar Association
- Eskom
- Netherlands regulator fine
- Quality control failures in Canada
- Rhode Island Benefits system
- US companies in China
- US unemployment portals
- Computer hack
- Sponsorships
- See also
- References
- Further reading
- External links
Deloitte is a multinational professional services network based in London, England. It is the largest professional services network in the world by revenue and number of employees, and is one of the Big Four accounting firms, along with EY, KPMG, and PwC. The Deloitte network is composed of member firms of Deloitte Touche Tohmatsu Limited ( ) a private company limited by guarantee incorporated in England and Wales.
The firm was founded by the accountant William Welch Deloitte in London, England in 1845 and expanded into the United States in 1890. It merged with Haskins & Sells to form Deloitte Haskins & Sells in 1972 and with Touche Ross in the US to form Deloitte & Touche in 1989. In 1993, the international firm was renamed Deloitte Touché Tohmatsu, later abbreviated to Deloitte. In 2002, Arthur Andersen's practice in the UK as well as several of that firm's practices in Europe and North and South America agreed to merge with Deloitte. Subsequent acquisitions have included Monitor Group, a large strategy consulting business, in 2013.
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