Kazuaki Mizuchi

Certified Public Accountant

Passed the CPA exam in 2008; registered as a CPA in 2011; passed the U.S. CPA exam in 2015; registered as a licensed tax accountant in 2022; and has been a certified public accountant for over 20 years. From 2007 to 2017, he mainly practiced accounting and auditing for major Japanese listed companies and New York Stock Exchange listed companies. During those three years, from 2012 to 2015, he was seconded to the main accounting department of a major chemical company. Experienced in accounting and finance operations of listed companies. From 2017 to 2019, he was seconded to the Ministry of Economy, Trade and Industry. Engaged in policy planning and drafting work, including legal and tax reform requests, mainly in the areas of business restructuring, business reorganization, and venture startups. From 2019 to 2022, he was engaged in supporting IPOs of startups before becoming independent and supporting web3 startups.

Education and Professional Background

Graduated from Meiji University, School of Commerce in 2003
Joined Ernst & Young ShinNihon auditing firm (currently EY Ernst & Young ShinNihon LLC) in 2007
Joined the Economic and Industrial Policy Bureau, Ministry of Economy, Trade and Industry in 2017
Joined EY Ernst & Young ShinNihon LLC in 2019
2022Established Kazuaki Mizuchi Certified Public Accountant and Tax Accountant Office
2023Formed a business alliance with Waseda Legal Commons Law Office

Practice Areas

Crypto assets, NFT, venture finance, IPO, M&A, restructuring, international taxation

Membership and Official Positions

The Japanese Institute of Certified Public Accountants
Tokyo Association of Certified Public Tax Accountants


The area known as web3, which is centered on blockchain technology, is an area where social systems such as law, taxation, and accounting have not yet been developed, and the respective risks are extremely high. We have decided to join forces with Waseda Legal Commons to provide one-stop legal, tax, and accounting services in this area. We look forward to working with you.