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CPA and Estates & Trusts Attorney Matt Mentzer Joins Foulston Siefkin’s Overland Park Office

December 14, 2023

OVERLAND PARK, Kan. – CPA and estate planning attorney Matt Mentzer has joined Foulston Siefkin LLP’s Overland Park office. Previously the lead tax attorney for a large national wealth management company, Mentzer’s 15 years of accounting and legal experience encompasses trusts, estates, probate, and tax matters.

Mentzer frequently works with high-net-worth clients to develop and implement income and gift/estate tax minimization and mitigation strategies. His experience also includes serving as tax counsel on M&A transactions. He represents clients before the US Tax Court, IRS Office of Appeals, and state taxing authorities on various tax issues and controversies and has represented clients ranging from C-suite officers of Fortune 500 companies to startup founders undergoing initial rounds of funding.

Prior to his leadership position in the wealth management firm, Mentzer spent more than a decade in private practice focused on estate planning, trust administration, and tax planning. He is a member of the American Bar Association Tax Section as well as a member of the Kansas Bar Association, the Missouri Bar, Johnson County Bar Association, and Kansas City Metropolitan Bar Association. Mentzer is a two-time University of Kansas graduate, earning his Bachelor of Science degree in Business Administration and Accounting as well as his Juris Doctor from the University of Kansas School of Law.

As the largest law firm based in Kansas, with offices in Kansas City, Topeka, and Wichita, Foulston Siefkin LLP provides legal services to a broad range of clients — from large national and international corporations to closely held businesses and individuals. Foulston’s lawyers are consistently recognized as among the leading lawyers in the United States. For more than 100 years, Foulston’s lawyers have provided counsel in a wide range of practice areas, including civil and complex litigation, tax, business matters, employment and labor, and healthcare. For more information, contact Tammy Allen, chief marketing officer, at 316.291.9572,; or visit