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In Japan for foreign companies from MOS Tax Corporation

MOS Tax Corporation has been providing customised, bilingual accounting and tax services to small and medium-sized foreign companies in Japan, including leading European companies.
We offer value-added services by always working personally with clients who have special requirements and challenges.

Personal Background

Yuko Ota (Managing Partner)

Licensed Tax Accountant
Master of Science in Pure Mathematics, Imperial College London
Joined MOS Tax Corporation in 2010
A member of the Board of the Finnish Chamber of Commerce in Japan (FCCJ)

Yoshinori Sano (Advisor)

Certified Public Accountant
Founder of MOS Tax Corporation
In 2014, bestowed the Insignia of the Knight, First Class, of the Order of the Lion of Finland by the President of the Republic of Finland, for long-term contributions to strengthen business ties between Finland and Japan.

Our service lines

In dealing with MOS Tax Corporation, you will always be in contact with one of our managing partners. As reflected in the client roster, MOS Tax Corporation provides superior service at greater cost-efficiency for small and medium-sized operations.


  • Monthly bookkeeping and preparation of general ledger, sub-ledger, trial balance and financial statements
  • Preparation of reporting package (monthly, quarterly, annually to the overseas parent)
  • Year-end closing and preparation of annual financial statements
  • Communication and liaison with the overseas parent
  • Cash management

Tax Consulting

Preparation and filing of various tax returns including:

  • Corporation income, inhabitant and enterprise taxes
  • Consumption tax
  • Property and other taxes
  • Individual income taxes for expatriates

Payroll Service

  • Monthly salary and bonus processing
  • Year-end income tax adjustments and preparation of legal records
  • Social security and labor insurance compliance

Social Security

  • Preparation and filing of initial application documents to join social insurance
  • Declaration of labor insurance premium and annual review of social security premium

Paralegal Assistance

  • Completion of various tax, social insurance and other requirements for the opening of representative offices or branches and the establishment of subsidiaries

Contact information

  • Address: Meguro OK Bldg. 4F 4-5-18, Kami-osaki, Shinagawa-ku, Tokyo 141-0021
  • Telephone: +81-3-6420-3031
  • Fax: +81-3-6420-3080
  • E-mail: office@mostaxcorp.jp