OC & Associates Tax Co.

OC & Associates Tax Co. is a regulated professional services firm incorporated specifically to provide tax services. In Japan, there are numerous returns which require filing and it is easy to miss some of the filings on some of the more obscure ones. Knowing how and when to file your corporate tax returns can make a considerable difference in how much you pay. Equally, whether the foreign enterprise operating in Japan is classified as a domestic or foreign corporation, also makes a difference when filing your returns. We will coordinate with your foreign shareholders and/or head offices to get the job done. There are some of the professional services to foreign entities we provide in Japan:

  • Corporate Income Tax return preparation *
  • Enterprise and Inhabitant Tax returns preparation *
  • Depreciable Assets (Property) Tax return preparation *
  • Business Location Tax return preparation *
  • Factor Based Tax return compilation *
  • Notification for Ultimate Parent Entity
  • Representation in tax audits
  • Country-by-Country Report (CbC Report) preparation
  • FAS109 and FIN48 tax provision analysis

Please email contact@ocassociates.jp for a tax return fee preparation table.

Managing Partners

Michiya Akuzawa

Michiya Akuzawa

CPTA (Japan), CPA (USA - Alaska)

Graduate of Waseda University. He spent nearly 10 years at KPMG AZSA, originally in the CAS (Client Accounting Services) department working on accounting and payroll outsourcing engagements for foreign companies and subsequesntly in the audit department performing due diligence and other assurance engagements. He has a total of 18 years of public accounting experience working on converting financial statements to/from JGAAP, USGAAP, or IFRS as well as handling tax affairs of foreign companies in Japan. Becomes partner in 2016.

Hiroko Hanato

Hiroko Hanato

CPTA (Japan), Certified Social Insurance and Labor Consultant (Japan)

Graduate of Ritsumeikan University. Member of the Tokyo Certified Public Tax Accountant Association and Tokyo Certified Social insurance and Labor Consultant Association. Provided accounting and payroll outsourcing services to foreign owned companies in the UK and Japan with Arthur Andersen, followed by OC & Associates. Becomes partner in 2000. Has the ability to advise companies on tax and social insurance matters for expats from both perspectives, as well as compliance with Japanese labor laws.


Firm name:
OC & Associates Tax Co.

Date of incorporation:
June 21, 2016

Kioicho Building 17F, 3-12, Kioicho, Chiyoda-ku, Tokyo, 102-0094



Michiya Akuzawa (CPTA #112272)
Hiroko Hanato (CPTA #80982)
Fumihisa Shimono (CPTA #116264)

Other CPTA Professionals: