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About us
Deloitte Touche Tohmatsu LLC
About Deloitte Touche Tohmatsu LLC
Deloitte Touche Tohmatsu LLC (DTT) is one of the Members of Deloitte Asia Pacific Limited, a member firm of the Deloitte network. As Japan’s leading audit firm and principal firm of the Deloitte Tohmatsu Group, DTT provides audit & assurance and risk advisory services. These services are delivered to many clients including multinational enterprises and major Japanese business entities through over 7,800 professionals, including about 3,000 Certified Public Accountants, in about 30 cities in Japan.
Corporate history
May 1968
Tohmatsu Awoki & Co. established
May 1975
Joined Touche Ross International (“TRI”) alliance
October 1986
Merged with Sanwa & Co. (established in 1973) and changed company name to Tohmatsu Awoki & Sanwa
April 1988
Merged with Marunouchi & Co. (established in 1968)
October 1988
Merged with Nishikata Audit Corporation (established in 1969) and Sapporo Dai-ichi Kaikei Audit Corporation (established in 1976)
February 1990
The merger of TRI with Deloitte Haskins & Sells (“DH&S”) in the U.S. led the way for the merger of Tohmatsu Awoki & Sanwa with Mita Audit Corporation (DH&S-Japan established in 1985) which resulted in a change of the company name to Tohmatsu & Co.
April 2001
Merged with SAN-AI Audit Corporation (established in 1983)
July 2002
Merged with Seiwa Audit Corporation (established in 1974)
April 2004
Changed company name in English to Deloitte Touche Tohmatsu
July 2009
Converted to a limited liability company and changed company name in English to Deloitte Touche Tohmatsu LLC
Transparency Report
Deloitte Touche Tohmatsu LLC presents stakeholders with a “Transparency Report” that addresses the basic information related to our auditing practice including a description of our organization, governance, system of quality management, independence and learning, for our fiscal year ended 31 May 2024.