The team of Plus One Service Co., Ltd./Takigawa Tax Accountant Office specializes in accounting, payroll calculation, social insurance, and legal procedures, such as business registrations and tax conventions between Japan and other countries. We challenge ourselves to be our clients’ best partner in business on any given day.

Representative Director

Yoshikazu Takigawa

Worked for a Swedish company in Japan for 28 years and gained experience predominantly in accounting, logistics, and personnel management. He initiated the establishment of Plus One Service Co., Ltd. in 1993 as its Representative Director.

Taku Terao

Started his career at a Japanese tax office. After gaining a year’s experience, he joined Plus One Service Co., Ltd. in September 2002. He is in charge of accounting and all other services for both Japanese and international clients. He was registered as the representative director as a successor to Yoshikazu Takigawa in October 2016.

Representative Tax Accountant

Hisako Takigawa (Certified Tax Accountant)

Co-founded Plus One Service Co., Ltd. and Takigawa Tax Accountant Office together with Yoshikazu Takigawa. With seven years’ experience at an international law office and over 10 years’ experience working for foreign-affiliated companies (U.S. and Swedish) in Japan, her knowledge and deep understanding of the business activities of foreign-affiliated companies in Japan gives Plus One Service Co., Ltd. an edge.

Manager, International Executive Services

Taichi Ueno

After completing his MBA in the U.S. and returning to Japan in 2010, he started working at Plus One Service Co., Ltd. in 2011.


Ayako Hashimoto

After having worked as an accountant at other accounting firms, started working at Plus One Service Co., Ltd. since November 2014. Currently, her role is to assist senior accountants by engaging in various works. She is determined to do her best to develop her expertise as an accountant to be of any help for our clients.

Tomoka Seki

Joined Plus One Service Co.,Ltd in 2015. She passed some of the tax and public accountant exams in 2014 and has continued the study, aiming to be a certified tax accountant.

Kohnosuke Uehara

After completing a college, worked at a medical corporation for 3 years and engaged in managerial accounting there. Being attracted to Plus One Service engaging in a wide rage of services for its foreign affiliated companies and looking for an opportunity for a growth, joined Plus One Service in June 2017.

Hiroaki Yui

After achieving a master's degree and passed the exams of bookkeeping and financial statement accounting, which are the examination subjects of the Tax Accountant Exam, he started working at Plus One Service Co., Ltd. in October 2017.

Shotaro Murakami

After majoring in French literature at university, decided to become a tax accountant. Having experienced an accounting job, he joined Plus One Service Co., Ltd. in April 2018, seeking for more global career. Now he's studying to pass the tax account exams while working, pursuing to be more professional in the feild.