Anderson Mori & Tomotsune's group provides advice across the full range of Japanese and international tax matters. The team frequently handles complex domestic and cross-border cases including those regarding corporate structuring, corporate reorganisations, real estate tax matters, CFC rules, customs duties, and the taxation of investment vehicles, as well as private equity, financial product and joint venture-related cases. The practice is co-led by Koji Fujita who is a seasoned authority on regulatory frameworks and tax policy, and Eiichiro Nakatani who is regularly involved in high-stakes tax disputes and transactions, as well as legislative reform and the advising of government ministries. Akira Tanaka is another key figure, known for his wide-ranging expertise spanning tax planning, tax litigation and general dispute resolution.

Mori Hamada’s team is known for its strong focus on tax planning and dispute resolution for both corporate and individual clients, with particular expertise in M&A, corporate reorganisations and cross-border transactions. Atsushi Oishi handles a wide range of tax matters, including tax audits, appeals against tax authorities and complex transactional work such as cross-border M&A and reorganisations. Makoto Sakai advises on both domestic and international M&A and reorganisations, providing strategic guidance from both corporate and tax planning angles, and is also active in tax audits, litigation and high-net-worth tax planning. Hiroyuki Kurihara concentrates on tax, M&A, and leveraged finance work, with deep experience in structuring cross-border deals and resolving intricate tax disputes. The three co-head the group, in which another notable practitioner is Hiroyuki Kurihara  who is active across tax and M&A matters.

Nagashima Ohno & Tsunematsu's team advises clients on a broad array of tax issues, offering both transactional and disputes expertise. Yushi Hegawa leads the team and is known for his focus on the tax elements of corporate, finance and commercial deals. Koichiro Yoshimura plays a key role within the group and has capabilities in both strategic tax planning and contentious matters. Shigeki Minami is experienced in handling audits, tax disputes and competent authority proceedings, while Takashi Saida regularly represents taxpayers in disputes with tax authorities and provides guidance on tax aspects across a range of complex transactions.

Nishimura & Asahi's team is highly regarded for its strength in tax controversies, with a standout record of success in tax litigation before Japanese courts. The team is headed up by Yo Ota who brings a wealth of experience in both domestic and international matters, including M&A, cross-border transactions, tax, corporate governance and IP issues. Akihiro Hironaka focuses on dispute resolution, particularly in tax-related cases, in addition to handling complex and large-scale tax disputes. Tsuyoshi Ito has expertise in corporate tax and financial transactions under Japanese law, has been a key figure in a number of significant tax litigation matters, and advises both corporate entities and private clients on tax planning and compliance issues.

TMI Associates' team offers integrated tax and corporate advice, delivering well-rounded support on a variety of matters. At the helm of the practice is Nobuaki Iwashina who specialises in corporate income tax and international taxation matters. Hiroyuki Yoshioka is a key figure in the team, with experience advising on tax planning, audits, and litigation, as well as providing tax guidance across a wide range of corporate transactions. Tomonori Oda is noted for his work in international tax planning, cross-border restructurings, tax audits and tax disputes.

Yokogi & Masui Partners' collective provides specialist advice on tax matters related to import transactions, including customs duties and consumption tax matters. The team is co-led by Yoichi Masui who counsels clients across a range of sectors such as food, machinery, cosmetics, apparel and e-commerce; and Kai Isoyama who brings strong expertise in tax law, including customs duties, and is also well-versed in dispute resolution. Another notable practitioner is Seisuke Imai.