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Matt Landwehr


St. Louis
314 552 6541 direct

Matt practices in the areas of state and local tax (SALT) controversy, banking and financial services litigation, business litigation, and appellate. 

His tax controversy work involves representing taxpayers (from large multi-state companies to individuals) before Missouri and Illinois state and local taxing authorities in corporate income, franchise, sales/use, property, and other tax controversies. He has negotiated and successfully resolved tax controversies at every stage from audits through appeals, and has also successfully prosecuted numerous large refund claims. 

Matt’s banking and financial services work includes representing banks in disputes involving lender liability, check collection and check fraud, and other aspects of the Uniform Commercial Code. His business litigation practice covers a wide range of business disputes including medical practice breakups and peer review proceedings, fraud, insurance, real estate, non-compete, officer fiduciary, and company dissolution and accounting.  

Matt has experience in all facets of litigation, and has tried cases before the Missouri Administrative Hearing Commission, and state and federal trial courts in Missouri and Illinois. He has also handled appeals at the Missouri State Tax Commission, the Supreme Court of Missouri, the Missouri and Illinois Courts of Appeal, and the United States Courts of Appeal for the Seventh and Eighth Circuits. 

Matt is a former law clerk for the Honorable Duane Benton of the Supreme Court of Missouri, a former Missouri Director of Revenue who currently serves as Circuit Judge of the United States Court of Appeals for the Eighth Circuit.


"Handling Tax Controversies to 'Win'"
Council On State Taxation (COST), Midwest Regional State Tax Seminar, St. Louis, Missouri (August 10, 2017)

"Lender Liability Issues in Loan Documentation, Administration, and Enforcement"
Central Bancompany, Inc., Jefferson City, Missouri (June 23, 2017)

"Recent National Developments in Sales and Use Tax Exemption for Utilities"
State Tax Roundtable for Utilities & Power, Spring 2017 STARTUP Conference Hosted by Ameren Corporation, St. Louis, Missouri (May 17, 2017)

"Nuts & Bolts of State and Local Tax: Practicing Constitutional Law Every Day"
American Bar Association (ABA), Section of Taxation, 2017 May Meeting, Washington, D.C. (May 11, 2017)

"Dealing with the Difficult Audit and Preparing for Appeal/Litigation in Court and in Appeals Court"
American Bar Association (ABA); Institute for Professionals in Taxation (IPT) Advanced Sales and Use Tax Seminar, New Orleans, Louisiana (March 22, 2017)

“Nuts & Bolts of State and Local Tax: Practicing Constitutional Law Every Day”
American Bar Ass’n (ABA), Section of Taxation, 2017 Midyear Meeting, Orlando, Florida (January 21, 2017)

“Taking the Fright out of Ethics”
Institute for Professionals in Taxation (IPT), St. Louis Luncheon Group Meeting, St. Louis, Missouri (October 25, 2016)

“Traps for the Unwary in Audits, Appeals, and Litigation”
Associated Industries of Missouri (AIM), 2016 Missouri Tax, Business and Manufacturing Conference, Columbia, Missouri (October 20, 2016)

"Witness Examination and Cross-Examination in Real Property Tax Appeals"
International Association of Assessing Officers (IAAO), Preparation and Trial Seminar, Chapel Hill, North Carolina (June 3, 2016)

"Preparing A Case For Trial – What Do I Do?"
American Bar Association (ABA)/Institute For Professionals In Taxation (IPT), Advanced Income Tax Seminar, New Orleans, Louisiana (February 29, 2016)

"Recent State & Federal Banking Court Decisions"
Missouri Bankers Association (MBA), 19th Annual Bank Legal Issues Conference, Columbia, Missouri (October 25 & 26, 2012)

"Recent State & Federal Banking Court Decisions";
Missouri Bankers Association (MBA),18th Annual Bank Legal Issues Conference, Columbia, Missouri, (October 27 & 28, 2011)

"Ethical Advocacy in Federal Court";
Fifth Annual Federal Practice Fundamentals Seminar, Thomas F. Eagleton United States Courthouse, (October 8, 2009)