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As of April 1st,2009

Group Companies
  • ・Komiyama & Co.CPAs
  • ・Azabu Partners Tax & Accounting Co.
  • ・IGI K.K.
  • ・Komiyama Social and Labor Insurance Firm
Corporate History
(About Us)


Opened a Certified Tax Accountant Firm in Minato-ku, Tokyo


Merged with a Certified Public Accountant Firm


Became Japanese representative member firm of CPAAI(CPA Associates International, Inc.) CPAAI_logo


Established a Certified Tax Accountant Corporation

Business Outline
  • Tax and Accounting Service
  • Audits and Assurance
  • Services for International Clients
  • Outsourcing Service
  • Management Consulting
  • Financial Planning
Certified Personnel
  • Certified Public Accountant
  • Certified Tax Accountant
  • Certified Public Accountant (USA)
  • Certified Social Insurance and Labor Consultant
  • Management Consultant for Small and Medium Enterprises
  • Authorized Sales Staff for Real Estate Deals
  • CFP
  • Financial Analyst
Group Employees

50 specialists and staffs


Ryoichi Komiyama, Advisor (Tax accountant, Management Consultant for Small and Medium Enterprises)
Mitsuru Komiyama,Managing Partner (Certified Public Accountant(Japan), CPA(USA) Tax Accountant)

Contact us

3-6-9 Roppongi, Minato-ku, Tokyo, 106-0032 JAPAN
Tel: +81-3-6697-7000
Fax: +81-3-3588-0532
Click here for Contact us


4-minute on foot from Exit 2 at Roppongi Itchome Station (Tokyo Metro Namboku Line).
6-minute on foot from Exit 3 or 5 at Roppongi Station (Tokyo Metro Hibiya-Line / Toei Subway Oedo Line)
Office Map