The team at Mori Hamada & Matsumoto Tokyo Office specialises in tax planning and disputes, advising both corporate and individual clients. Co-led by Atsushi Oishi, Makoto Sakai, and Makoto Sakai, the team offers expertise in M&A, corporate reorganisations, and cross-border transactions. Oishi handles tax-related matters such as investigations, appeals against tax authorities, and transactional issues. Sakai focuses on M&A and corporate reorganisations from a tax planning perspective, while Kurihara is skilled in handling complex tax disputes. Other key members are Hiroshi Oyama, who specialises in tax planning and disputes, and Koyo Madakoro, who is a licensed tax accountant.

Led by the ‘experienced’ Yushi Hegawa, the team at Nagashima Ohno & Tsunematsu assists clients with a wide range of tax-related matters. Hegawa focuses on the tax law aspects of corporate, finance, and commercial transactions, while Takashi Saida frequently advises taxpayers in disputes with tax authorities and on tax matters across various transactions. Shigeki Minami handles general tax matters, including audits, disputes, and competent authority procedures, and Koichiro Yoshimura specialises in both tax planning and contentious tax matters. Other key individuals include Tsutomu Endo and Kenji Horiuchi, who are well versed in tax advice and planning matters related to a variety of transactions.

 

The team at Anderson Mori & Tomotsune is well versed in international taxation, covering areas like transfer pricing, CFC taxation, and tax treaty advisory. The team is co-led by Koji Fujita, who is an expert in cross-border tax matters including planning, structuring, and litigation, and Eiichiro Nakatani, who focuses on cross-border taxation transactions and contracts. Yutaka Shimoo, another key member of the team, provides counsel on tax issues related to digital transactions, including cryptocurrencies and NFTs.

Led by Yo Oto, the tax team at Nishimura & Asahi has expertise in managing tax controversies and related disputes. Oto is adept in domestic and cross-border tax, M&A, and corporate governance-related matters, while Akihiro Hironaka specialises in dispute resolution and litigation regarding international taxation. Tsuyoshi Ito brings extensive experience in corporate taxation and financial transactions. Other names to note are Yasutaka Nishikori, who focuses on the tax treatment of financial instruments, and Mayuko Nakamura, who has a strong background in international tax and tax disputes.

Led by Nobuaki Iwashina, the team at TMI Associates is well-versed in advising clients from both tax and corporate perspectives. Utsumi specialises in providing corporate and tax-related advice, especially in tax lawsuits and audit matters, while Iwashina focuses on corporate income tax and international taxation matters. Hiroyuki Yoshioka is also a key figure, particularly in tax planning and audit-related matters. Former joint practice head Hidehiro Utsumi departed in December 2024.

The team at Yokogi & Masui Partners is known for its ‘exceptional expertise’ in tax issues, particularly concerning import transactions. Under the leadership of Yoichi Masui and Kai Isoyama, the team assists clients with advance rulings on customs duties, post-clearance audits, and transaction structuring from a tax law perspective. Masui brings extensive experience in handling transactions across various industries, while Isoyama specialises in tax law and dispute resolution, with a focus on customs duties.