OC & Associates International Accounting Office Logo OC & Associates English Site OC & Associates Site Map OC & Associates English Site OC & Associates Japanese Site
About OC & Associates Our people in OC & Associates Professional Services of OC & Associates Information from OC & Associates OC & Associates Links Careers OC & Associates
Greater Transparency and Accountability
Accounting and Tax Compliance Specialists for Foreign Companies in Tokyo Japan, OC & Associates
OC & Associates Introduction
Originally established in October 1992 and incorporated in February 1996, OC & Associates K.K. (formerly Okamoto & Company) is a four-partner accounting firm, specializing in accounting, auditing, payroll/statutory benefits services to foreign companies in Japan. Our client sizes range from one-person SOHO type startup offices to subsidiaries with over 2,000 employees. Tax services are being provided by OC & Associates Tax Co., an office located next to OC & Associates K.K. This allows for the important integration between our accounting and tax services as tax treatment are often guided by the accounting treatment. We are also one of the few accounting firms in Japan registered with the PCAOB (Public Company Accounting Oversight Board) and have also obtained a Type1 ISAE 3402 Report for our payroll services. A subsidiary office was established in Singapore in October 2014.
OC & Associates News & Events
Mar. 15~16, 2017
Global Ethics Summit 2017 in New York, NY USA
May 15~19, 2017
IASB Meeting - London
May 23~25, 2017
IFRS Foundation Trustees - Tokyo
May 31, 2017
FASB issues update on modification accounting for share-based payment awards
May 31, 2017
OCA issues the spring 2017 newsletter
Jun. 13, 2017
IFRS Interpretations Committee - London
Jun. 15~16, 2017
Meeting of IASB representatives with the Capital Markets Advisory Committee and the Global Preparers Forum - London
Jun. 19~23, 2017
IASB Meeting - London
Jun. 21, 2017
OC & Associates HR Co. has been established to provide social insurance services.
Jun. 29~30, 2017
IFRS Foundation IFRS Conference - Amsterdam
OC & Associates clients portal
OC & Associates Associated Firms
OC & Associates Tax Co.
OC & Associates Pte. Ltd. (Singapore)
Kreston Japan Member Audit Firms
 Yaesu Audit Company
 Ark Meiji Audit & Co.
OC & Associates Global Affiliations
OC & Associates Global Network with Kreston International
OC & Associates Latest Newsletter
OC & Associates Office Tax Calendar
OC & Associates awards and testimonials
Top Page
LinkedIn Buttons Image LinkedIn Button
Access Disclaimer Privacy Policy