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Thomas Richardson concentrates his practice in the areas of: estate planning; estate and trust administration; representation of family businesses, including succession planning; tax controversies involving the Internal Revenue Service and local tax authorities; fiduciary litigation; asset protection planning; charitable giving; and creation and representation of tax-exempt entities, including family foundations and public charities. A 1990 graduate of Rutgers Law School, Mr. Richardson was an associate in the trusts and estates department of an international law firm in New York before joining Arnold & Porter.


Chambers High Net Worth
Private Wealth Law (Washington, D.C.) (2016–2024)
Private Wealth: Eastern Region (USA) (2017–2024)
Best Lawyers
Trusts and Estates (DC) (2006-2024)
Washingtonian Magazine
“Top Wealth Adviser Hall of Fame“—Estate Attorneys (2023)
“Top Lawyers Hall of Fame” (2022)
“Top Lawyers“—Trusts and Estates (2004, 2007, 2009, 2011, 2013, 2015, 2017, 2018, 2022)
“Top Financial Advisor“ (2017-2019)
“Top Money Advisers“—Estate Attorneys (2014)



  • J.D., Rutgers University School of Law, 1990
  • B.A., University of Vermont, 1985


  • District of Columbia
  • New York


  • Member, DC Estate Planning Council