Thomas J. McMahon

Thomas McMahon has an active business and healthcare practice. He has extensive experience in structuring and negotiating complex mergers and acquisitions, real estate and securities transactions and in rendering related tax advice. Thomas is also active in the areas of state and local taxation and has litigated a number of significant cases before administrative and judicial bodies. He works regularly with a number of healthcare clients. Thomas advises on tax considerations in the prosecution and settlement of lawsuits and arbitration proceedings. He also consults with accountants and lawyers outside the firm regarding tax issues.


  • Speaker, 2001 Advanced Conference on Commercial Real Estate Purchases and Sales, The Seminar Group, 2001
  • Speaker, “Real Estate Law Practice in Ever Increasingly Interesting Times,” Kansas City Metropolitan Bar Association, 1997
  • Speaker, “Taxation of Limited Liability Companies & Partnerships,” University of Missouri-Kansas City, 1995


  • Author, “Coordinating Partners’ Profit and Loss Allocations with Economic Sharing Agreements,” Journal of Partnership Taxation (W,G&L), Fall 1993, pp. 220-231

Professional Affiliations

  • American Bar Association, Taxation Section, Subcommittee on Partnerships
  • The Missouri Bar

Community Involvement

  • Children’s Mercy Hospital Foundation, Secretary
  • YMCA Invest in Youth Campaign, Major Gifts Campaigner, 1989-90
  • Greater Kansas City Chamber of Commerce, Centurions Class of 1989
  • Kansas City Soccer Foundation, Inc., Vice President and Director, 1985-86
  • Kansas City Spirit, Inc., Vice President and Member of Executive Committee, 1983-85


  • Selected among The Best Lawyers in America®, 2003-2024
  • Named to Best of the United States, Lawyer Section, 2006
  • Selected for Missouri/Kansas Super Lawyers, 2005-2013
  • Selected for Best Attorneys Network Directory, 2005
  • Fellow, American College of Tax Counsel
  • Listed in Who's Who in American Law
  • Martindale-Hubbell® "AV" Rating
Photo of Thomas J. McMahon
F: 816.292.2001


Jackie Baker


Court Memberships

  • Missouri
  • U.S. Tax Court
  • U.S. District Court for the Western District of Missouri


University of Missouri-Kansas City School of Law, LL.M., 1987

Yale Law School, J.D., 1981

Hofstra University, B.B.A., Finance, summa cum laude, 1978