Department profile
Mori Hamada

Private Wealth Law

High Net Worth Guide 2026 : Japan


Mori Hamada

Rankings

About

Provided by Mori Hamada

Mori Hamada serves numerous high-net-worth individuals who seek the strategic advice of our tax practitioners. Our firm offers bespoke solutions to meet the diverse needs of these clients, who include private business owners, founders and major shareholders of listed companies, and private investors. Our services encompass business succession planning, establishing trust funds to secure assets, advising Japanese residents on overseas investments, supporting cross-border inheritance cases, advising high-net-worth non-residents investing in Japan, and family dispute resolution. Our Wealth Management Practice Group comprises lawyers and licensed tax accountants proficient in Japanese and international corporate reorganizations, M&A, trusts, and asset and international taxation, collaborating with a network of overseas firms and professionals when necessary.

Chambers Review

Provided by Chambers

Private Wealth Law - Japan

Band 1

Band 1


What the Team is Known For

Mori Hamada is one of the largest firms in Japan. It has a strong practice in private wealth work, including business succession planning, trust formation and administration, as well as cross-border inheritance. The firm advises ultra high net worth, high net worth and non-resident clients in Japan, including private business owners, founders and major shareholders of listed companies.

Strengths

Provided by Chambers

  • We consult Mori Hamada when we have particularly difficult and complex cases, and we are never dissatisfied with the way our cases are handled.

    Private Wealth Law respondentHigh Net Worth
  • Mori Hamada have a wide practice and seem to be very experienced with international clients. They are also knowledgeable and responsive.

    Private Wealth Law respondentHigh Net Worth
  • Mori Hamada has a very strong team in private wealth law.

    Private Wealth Law respondentHigh Net Worth

Notable Practitioners

Provided by Chambers

  • Band 1Atsushi Oishi
    Band 1Atsushi Oishi

    Atsushi Oishi

    Atsushi Oishi advises on a wide array of private wealth matters, particularly in business succession and tax investigations. He is also well known for his sophisticated tax and estate planning techniques as well as being knowledgeable on matters related to M&A for both domestic and international clients.
    • Atsushi is a highly reliable attorney with extensive experience in wealth management, and he provides precise advice.

      Private Wealth Law respondentHigh Net Worth
    • Atsushi has a wide range of experience, including on legal and tax matters related to family governance and private wealth. He is arguably one of the best lawyers in Japan.

      Private Wealth Law respondentHigh Net Worth
    • Atsushi is very clear and concise in his advice. It is succinct and to the point, and he can digest complex information and then advise a layperson well.

      Private Wealth Law respondentHigh Net Worth
  • Band 1Makoto Sakai
    Band 1Makoto Sakai

    Makoto Sakai

    Makoto Sakai handles private wealth management and tax matters. He also deals with tax litigation and investigations in addition to his wider M&A practice.
    • Makoto is one of the most sought-after lawyers in this area and is well known for cross-border and international work.

      Private Wealth Law respondentHigh Net Worth
    • Makoto is a friendly person and well received by clients.

      Private Wealth Law respondentHigh Net Worth
    • Makoto is very experienced with issues faced by international clients.

      Private Wealth Law respondentHigh Net Worth

Ranked Individuals at Mori Hamada (2)

Japan

Members

Provided by Mori Hamada

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