Accounting & Tax









About​​ Itseki

Itseki Group is a team of experts consisted by CPA and tax accountants.

We provide high quality services with creativity and execution ability in order to support the growth of wide range of customers from startups level to enterprise level.

As the meaning of “Itseki”, we are willing to jump on the same boat and to grow together with our clients.

There are various stage that company faces in the course of business.

A company may select to go abroad, select to go public or select to buy/sell businesses.

In any cases, we are here to support you as your partner to overcome hardships to achieve a big success.


Geneva Group International ("GGI")

Itseki is a member of GGI, one of the top-ten accounting, tax and legal professional alliances.

With 120+ members in the world, we are able to provide clients with various global opportunities with decent qualities.

GGI members exchange knowledge and expertise through practice groups and Global Conferences, and we establish strong partnerships among the members to support clients to tackle international accounting/tax issues rapidly. 


GGI Geneva Group International (GGI) is a global Alliance of independent professional firms. GGI Geneva Group International AG, a company incorporated in accordance with the laws of Switzerland, operates solely as an administrative resource of the Alliance and therefore provides no legal, audit or other professional services of any type to third parties. Such services are provided solely by GGI member firms in their respective geographic areas. GGI and its member firms are legally distinct and separate entities. These entities are not and shall not be construed to be in the relationship of a parent firm, subsidiary, partner, joint venture, agent or a network. No member firm of GGI has any authority (actual, apparent, implied or otherwise) to obligate or bind GGI or any other GGI member firm in any manner whatsoever, equally, nor does GGI have any such authority to obligate or bind any member firm. All GGI members are independent firms, as such they all render their services entirely on their own account (including benefit and risk), without any involvement of GGI and/or other GGI member firms.



MT-O Jinbocho 3F, 1-14-3 Kanda Jinbocho, Chiyoda-ku,

TOKYO 101-0051

Hanzomon Line      Jinbocho Station A5 Exit  1min.
Toei Mita Line         Jinbocho Station A5 Exit  1min.
Toei Shinjuku Line  Jinbocho Station A5 Exit  1min.
Tozai Line          Kudan-shita Station 5 Exit  10min.

JR Suidobashi Station 10min.