Photographic portrait of Koichi Tsuji
Companies need to demonstrate how they contribute to society. As long-term value becomes more important, it’s essential that companies stay ahead of changes in society and move forward without being bound by conventional thinking.

Koichi Tsuji

EY Japan Chairman & CEO and Japan Regional Managing Partner

Advocate for innovative approaches that increase the quality of services.

Areas of focus Innovation Customer Purpose Trust
Office Tokyo, JP

As the EY Japan Chairman & CEO and Japan Regional Managing Partner, Koichi Tsuji leads member firms and plays a vital role in elevating the presence of EY in Japan. Koichi has more than 30 years of professional auditing experience, serving multinational corporations and financial institutions, including international experience gained in Zurich, Switzerland.

Koichi became a partner of Ernst & Young ShinNihon LLC in 1996. In his previous role, he was a member of the EY Global Account Committee, which manages EY’s key clients. In addition, he served as the Japan representative on the EY Global Governance Council. He is also a member of the EY Global Practice Group, a group of EY’s world leaders, and the EY Global Diversity & Inclusiveness Steering Committee.

Koichi is a Japan certified public accountant (CPA), and received an MA in Economics from Waseda University, Japan and a BSc in Accounting from Chuo University, Japan.

How Koichi is building a better working world

In a time of heightened uncertainty, it is essential that companies prioritize long term value creation and proactively take on challenges for transformation to achieve sustainable growth and development.

To help companies identify solutions to their most pressing issues, we leverage EY’s advanced technology, talented professionals, and global network to offer our clients comprehensive, integrated solutions. I believe our mission is to build a better working world by supporting our clients in building on their unique long-term value.

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