Geoffrey M. Mason

Geoffrey Mason advises high net worth clients on estate planning and trust administration. He works with private equity and venture capital principals, corporate executives, and entrepreneurs to develop and implement estate and gift plans that meet their personal and financial goals in a tax-efficient manner. Geoff also serves as trustee of many family trusts, and advises trustees and beneficiaries in connection with investment, tax, and fiduciary matters.


  • The Best Lawyers in America (2023)
  • Boston Magazine “Top Lawyers” (2021)
  • Chambers High Net Worth (2021-2023)

Publications and Presentations

  • “Marital Estate Planning After Tax Reform,” co-presenter, Massachusetts Continuing Legal Education, Inc., July 2019 and July 2018
  • “2017 Tax Reform/Charitable Planning Update,” co-presenter, State Street Global Advisors Charitable Asset Management 2018 Gift Planning Conference, April 10, 2018

Education & Credentials

New York University School of Law
JD, 2005, cum laude
Robert McKay Scholar
Colby College
BA, 2000, with honors



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