Skip to main content

Deloitte Touche Tohmatsu Limited

Founders

Who Founded Deloitte?

William Welch Deloitte, George Touche, Nobuzo Tohmatsu · Founded 1845 · HQ today: London, United Kingdom

Who founded Deloitte?

Deloitte was founded by William Welch Deloitte, George Touche, Nobuzo Tohmatsu in 1845 in London, United Kingdom. It is now led by Joe Ucuzoglu.

Founders
William Welch Deloitte, George Touche, Nobuzo Tohmatsu
Founded
1845
Headquarters
London, United Kingdom
Number of founders
3
Current CEO
Joe Ucuzoglu (since 2022)
Where was Deloitte founded?
Deloitte was founded in London, United Kingdom in 1845. wikidata.org
When was Deloitte founded?
Deloitte was founded in 1845.
Who started Deloitte?
Deloitte was founded by William Welch Deloitte, George Touche and Nobuzo Tohmatsu.
How old is Deloitte?
Deloitte is 181 years old as of 2026.

Founding Story

William Welch Deloitte opened an accounting office on Basinghall Street in London in 1845, during the railway boom. In 1849 he was appointed an independent auditor of the Great Western Railway, and in 1888 he became president of the Institute of Chartered Accountants in England and Wales. The modern network formed through mergers with American firm Haskins & Sells, Touche Ross (rooted in George Touche's practice) and Japan's Tohmatsu, culminating in the 1989 Deloitte Haskins & Sells and Touche Ross combination.

What each Deloitte founder did

FounderRole at foundingContributionSource
William Welch DeloitteFounder of DeloitteOpened an accounting office in London and became an important figure in the development of professional audit work.en.wikipedia.org
George ToucheFounder of Touche lineageFounded a predecessor firm that later became part of the Deloitte & Touche global network.en.wikipedia.org
Nobuzo TohmatsuFounder of Tohmatsu lineageFounded the Japanese firm that became part of Deloitte's global name and network history.—

Background

William Welch Deloitte was an effective, pioneering 19th-century British accountant who single-handedly founded the original London accounting practice in 1845. He is widely celebrated globally as one of the true, founding fathers of the modern, professional accounting industry, famously becoming the first independent auditor of a major public railway company.

Role at Deloitte Touche Tohmatsu Limited

William Welch Deloitte (1818-1898) opened his London accounting office in 1845. In 1849 he was appointed an independent auditor of the Great Western Railway, and he later served as president of the Institute of Chartered Accountants in England and Wales. His firm combined with Haskins & Sells of New York in 1952, took the Deloitte Haskins & Sells name in 1978, and merged with Touche Ross in 1989. William Welch Deloitte was born in 1818.

Background

George Touche trained as an accountant in Edinburgh before moving to London, where he built an accounting and investment-trust practice and later expanded to New York.

Role at Deloitte Touche Tohmatsu Limited

Sir George Alexander Touche was a prominent 19th-century British accountant and a foundational founding figure behind the modern Deloitte Touche Tohmatsu global network. Educated in Edinburgh, Touche moved to London and established his own accounting practice, George A. Touche & Co., in 1899. He successfully expanded his firm internationally, forming a critical partnership in New York that laid the groundwork for the modern Touche Ross network. A highly influential figure in both finance and politics, he also served as a Conservative Member of Parliament and was knighted for his services. In 1989, his legacy firm officially merged with Deloitte Haskins & Sells, creating the massive modern Deloitte empire.

George Touche was born in 1861. Education: Stewart's Melville College.

Background

Nobuzo Tohmatsu was a paymaster in the Imperial Japanese Navy and rose to admiral rank. His years managing naval supply chains and accounts were his training for building an auditing firm in Japan.

Role at Deloitte Touche Tohmatsu Limited

Nobuzo Tohmatsu was a Japanese accountant and former naval officer whose firm gave the Tohmatsu name to Deloitte Touche Tohmatsu. He served in the Imperial Japanese Navy, where he managed supply and accounts and ended World War II as a rear admiral. He then moved into civilian finance and qualified as a CPA in 1952. In 1968 he co-founded Tohmatsu, Awoki & Co. as an auditing practice. The firm became an international partner of Deloitte, and his name was added to the global brand in the 1993 merger. (Exact birth year remains publicly undisclosed).

Deloitte Touche Tohmatsu Limited: CEO & Leadership History

Full timeline →

Joe Ucuzoglu

Global Chief Executive Officer

2022 – Present

Under Ucuzoglu, aggregate revenue rose from $64.9B in FY2023 to $74.5B in FY2026, and Deloitte launched the Zora AI agentic platform with NVIDIA.

Punit Renjen

Former Global Chief Executive Officer

2015 – 2022

During his tenure, Deloitte's revenue grew from about $35 billion to more than $59 billion. He launched the WorldClass societal-impact program and the WorldClimate strategy, and became Global CEO Emeritus on retirement.

Barry Salzberg

Global Chief Executive Officer

2011 – 2015

Deloitte grew its consulting and advisory work during his term. Punit Renjen succeeded him in 2015.

Keep researching Deloitte

Who Founded Deloitte? FAQ

Who was William Welch Deloitte and how did he establish the firm in 1845?

William Welch Deloitte (1818 to 1898) was an English accountant and pioneer of the modern independent auditing profession. In 1845, at age 27, he opened his first office on Basinghall Street in London, transforming railroad accounting and becoming the first independent auditor of the Great Western Railway.

Who were Charles Waldo Haskins and Elijah Watt Sells and how did they form Haskins & Sells in 1895?

Charles Waldo Haskins and Elijah Watt Sells founded Haskins & Sells in New York in 1895 after working on the US government's Dockery Commission accounting review. The firm combined with Deloitte in 1952 and adopted the Deloitte Haskins & Sells name in 1978.

Who was Sir George Touche and what was his founding contribution?

Sir George Alexander Touche (1861 to 1935) was a Scottish accountant, investment trust pioneer, and British Member of Parliament who founded George A. Touche & Co. in London in 1899 and co-founded Touche, Niven & Co. in New York in 1900.

Who was Nobuzo Tohmatsu and how did Tohmatsu & Co. join the network in 1968?

Nobuzo Tohmatsu was a former Imperial Japanese Navy officer who became a certified public accountant after World War II. In 1968 he co-founded Tohmatsu Awoki & Co. in Tokyo, which joined the Touche Ross network in 1975.

How did the historic 1989 merger create Deloitte & Touche?

In 1989, Deloitte Haskins & Sells merged with Touche Ross globally to form Deloitte & Touche (Deloitte Touche Tohmatsu), creating a worldwide accounting and consulting colossus with leading scale across North America, Europe, and Asia.

Who founded Deloitte?

William Welch Deloitte founded the firm in London in 1845. The network's name also honors George Touche and Nobuzo Tohmatsu, whose firms joined through mergers.

Related Founder Profiles

Compare founding stories, origins, and entrepreneurial journeys

Content is for informational purposes only. Not financial advice. Data sourced from SEC filings, annual reports, and public records. See our full disclaimer and methodology.