GYOSEI & CO. GYOSEI & CO. will assist clients in creating the most powerful business solutions which exceed their expectations.

About Us

Established September 1990
Executive Director
of Gyosei group
Naruhito Minami
Head office Kojimachi Bldg. 2F, 3-3-6 Kudan Minami,Chiyoda-ku,Tokyo 102-0074, Japan
Tel: +81-3-5211-7878
Fax: +81-3-5211-7879
Certified Public Accountants
Junior Accountants
Other specialists and administrative
Number of corporate clients
for audit services
Audits under the Financial Instruments and Exchange Law or the Corporate Law
Voluntary audits
International association


Gyosei & Co. is an independent member of Nexia International,
a worldwide association of independent accounting and consulting firms


PCAOB is a private, nonprofit corporation created by the Sarbanes-Oxley Act of 2002 to
oversee the auditors of public companies.


Head office Tokyo Kojimachi Bldg. 2F, 3-3-6, Kudan Minami, Chiyoda-ku, Tokyo, 102-0074, Japan
Tel: +81-3-5211-7878    Fax: +81-3-5211-7879
Osaka office Krabo-Anex Bldg. 9F, 2-4-11, Kyutaro-cho, Chuo-ku, Osaka, 541-0056, Japan
Tel: +81-6-6265-8461    Fax: +81-6-6265-8462
Nagoya office Nagoya TCCI Bldg. 8F, 2-10-19, Sakae, Naka-ku, Nagoya, 460-0008, Japan
Tel: +81-52-209-5755    Fax: +81-52-209-5756
Hokuriku office 11-25, Motomachi, Kennroku, Kanazawa-shi, Ishikawa, 920-0931, Japan
Tel: +81-76-221-8788    Fax: +81-76-222-1323


Audit services

Our commitment to the quality, efficiency and integrity of our audits will provide you with an exceptional audit service completed by our highly qualified and experienced professionals.

IFRS support

We provide consulting service in converting from local GAAP to IFRS by our IFRS specialists. You can minimize your cost and efforts in IFRS conversion with our made-to-measure roadmap.

IPO support

Our confidence in IPO support service is backed up with precise knowledge and solid experience in each of our professionals. We have deep knowledge of the Japanese stock market and will deliver the most adequate advice if your company is willing to go public.

Internal control support

We provide consulting service in designing internal control assessment structure, not only to just comply with J-SoX regulations, but also to implement the assessment most efficiently and effectively in accordance with companies' business.

International association

[Nexia International]
GYOSEI & CO. is a member of Nexia International, a worldwide association of independent accounting and consulting firms in over 100 countries. Through Nexia International, we deliver a wide range of service including cross-boarder mergers and acquisitions, corporate finance, International taxation and audit.

Business reorganization consulting

The legislation regarding business reorganization in Japan has been well maintained and companies could have several options; however, it has become too complicated to manage for most companies. We will provide professional support to our clients based on the most updated knowledge and experience on these issues such as equity swap, acquisition, merger and corporate split etc. and also issues on business restructuring.

Corporate recovery consulting

Laws and regulations in Japan on corporate recovery have been maintained and companies could have several options. We have expertiese and experience to support your company's recovery.

Other support

We also offer our clients other supports and services such as below based on our professional knowledge and experience in accounting and finance.
- Valuation of unlisted shares
- Due diligence
- Accounting review
- Risk management advisory service


GYOSEI & CO. is a member firm of the “Nexia International” network. Nexia International is a leading worldwide network of independent accounting and consulting firms, providing a comprehensive portfolio of audit, accountancy, tax and advisory services. “Nexia International” also refers to the trading name of Nexia International Limited, a company registered in the Isle of Man, which operates the Nexia International network. Company registration number: 53513C. Registered office: 1st floor, Sixty Circular Road, Douglas, Isle of Man, IM1 1SA. Nexia International Limited does not deliver services in its own name or otherwise. Nexia International Limited and the member firms of the Nexia International network (including those members which trade under a name which includes the word Nexia) are not part of a worldwide partnership. Nexia International Limited does not accept any responsibility for the commission of any act, or omission to act by, or the liabilities of, any of its members. Each member firm within the Nexia International network is a separate legal entity. Nexia International Limited does not accept liability for any loss arising from any action taken, or omission, on the basis of the content on this website or any documentation and external links provided. The trade marks Nexia International, Nexia and the Nexia logo are owned by Nexia International Limited and used under licence. References to Nexia or Nexia International are to Nexia International Limited or to the “Nexia International” network of firms, as the context may dictate.


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