Biography
Adam Thimmesch joined the law faculty in 2012 and is the Margaret R. Larson Professor of Law. His research focuses on state tax policy and the impacts of the U.S. constitutional structure on state fiscal capacity. His research has been published in a variety of legal journals, including most recently the University of Pennsylvania Journal of Constitutional Law, the Tennessee Law Review, the Florida State University Law Review, the Arizona State Law Journal, and the Temple Law Review. Professor Thimmesch frequently speaks at academic and professional conferences around the country and is active in national organizations. He served as a member of the executive committee of the American Association of Law Schools’ Section on Taxation and was its Chair in 2022. Thimmesch also served as the reporter for the Uniform Law Commission’s study committee on online sales taxation in 2020. Professor Thimmesch testifies before state legislative committees and provides advice to legislators and policy groups on state tax matters.
At the Nebraska College of Law, Professor Thimmesch teaches Antipoverty Tax, Individual Income Taxation, State and Local Taxation, and the Taxation of Business Entities. He was voted the Professor of the Year by upper class law students in 2013, 2017, and 2018 and received a College Distinguished Teaching Award in 2014 and 2022. Professor Thimmesch also serves as the faculty director of the Law+Business program.
Before joining the College of Law, Professor Thimmesch worked at Faegre & Benson LLP in Minneapolis before joining the College of Law. His legal practice focused on tax and business matters, including structuring and negotiating domestic and international transactions, advising on state, federal, and international tax matters, and handling tax disputes before the Internal Revenue Service and state taxing agencies. He received his J.D. with highest distinction in 2005 from the University of Iowa College of Law, where he was an Articles Editor on the Iowa Law Review.
Courses
- Business Assocations Law 632/G (4 cr hr)
An introduction to the law of business associations. This course examines the relationships among the various participants in business entities and, to a lesser extent, the relationships between business entities and outsiders. - Corporate Finance Law 746/G (3 cr hr)
Introduction to the theories and applications of modern corporate finance. The course will explore a range of topics, including: valuation theories; the efficient capital market hypothesis; risk, return, the capital asset pricing model, and arbitrage pricing theory; investment and financing decisions; optimal capital structure; the role of classical finance theory in legal decisions; and option theory. Prerequisite: Business Associations or permission of instructor. - Taxation - Individual Income Tax Law 637/G (4 cr hr)
Introduction to the structure and content of the federal income tax system, focusing primarily on taxation of individuals. Material covered includes the concept of income, deductions, income splitting, capital gains, and tax accounting. The course will attempt to give the student some technical proficiency in solving tax problems as well as an understanding of the tax policy decisions implicit in the technical rules. - Taxation - State and Local Law 692/G (3 cr hr)
This course covers how state and local governments raise revenues and how the U.S. Constitution limits their choices. We will look specifically at how the evolution of interstate commerce (and specifically electronic commerce) has impacted state and local governments and how those governments are seeking new ways to finance themselves. We will also look at the structure of state income, sales, and property taxes. Students interested in public policy, state and local government, or issues of federalism will likely enjoy the class. Students need not have taken (or particularly enjoyed) any previous tax course to enroll or succeed in this course. Student grade is based on class participation and on one final examination. - Corporate Tax Law 638/G (3 cr hr)
Advanced federal income tax focusing on income taxation of corporations and shareholders. Pre-requisite: Individual Income Tax
Articles
- Adjudicative Retroactivity and Constitutional Safe Harbors, 28 U. Penn. J. of Const. Law 1 (2026)
- The Dimensions of State Antipoverty Tax, 22 Pitt. Tax Rev. 179 (2025)
- Beyond ChatGPT: Transforming Government with Augmented LLMs, 92 Tenn. L. Rev. 87 (2024) (with Orly Mazur)
- A Future for the State Corporate Income Tax, 77 Tax Lawyer 761 (2024)
- Cooperative Federalism and the Digital Tax Impasse, 51 Fl. St. U. L. Rev. 647 (2024) (with Orly Mazur)
- Tax, Incorporated: Dynamic Incorporation and the Modern Fiscal State, 54 Ariz. St. L.J. 179 (2022)
- Weathering State and Local Budget Storms: Fiscal Federalism with an Uncooperative Congress, 55 U. Mich. J. L. Reform 309 (2022) (with David Gamage, Darien Shanske, and Gladriel Shobe)
- The Unified Dormant Commerce Clause, 92 Temple L. Rev. 331 (2020)
- Taxing E-Commerce in the Post-Wayfair World, 58 Wash. U. J. L. & Pol’y 71 (2019) (with David Gamage & Darien Shanske)
- Consuming the Benefits of Copyright: Multijurisdictional Sales Tax Compliance, 107 Ky. L.J. 685 (2019)
- Tax Privacy?, Temp. L. Rev. (2018)
- A Unifying Approach To Nexus Under The Dormant Commerce Clause, Mich. L. Rev. Online (2018)
- Transacting in Data: Tax, Privacy, and the New Economy, 94 Denv. L. Rev. 145 (2016)
- Testing the Models of Tax Compliance: The Use-Tax Experiment, Utah L. Rev. 1083 (2015)
- Taxing Honesty, 118 W. Va. L. Rev. 147. (2016)
- Comptroller v. Wynne and the Futile Search for Non-Discriminatory State Taxation, 67 Vand. L. Rev. En Banc 283 (2014)
- The Tax Hangover: Trailing Nexus, 33 VA. Tax Rev. 497 (2014)
- The Illusory Promise of Economic Nexus, 13 Fla. Tax Rev. 157 (2012)
- The Fading Bright Line of Physical Presence: Did KFC Corporation v. Iowa Department of Revenue Give States the Secret Recipe for Repudiating Quill?, 100 Kentucky L.J. 339 (2012)
- Beyond Treble Damages: Hanover Shoe and Direct Purchaser Suits after Comes v. Microsoft Corp., 90 Iowa L. Rev. 1649 (2005)
Media
- Think Before Jettisoning Corporate Taxes, Professor Cautions States Bloomberg Tax (2023)
- Banks' state income taxes could rise after physical presence standard rejected, S&P Global Market Intelligence (2018)
- Enjoying those tax-free online purchases? Supreme Court could change that, StarTribune (2018)
- State Plans to Mitigate Federal Tax Cap No Sure Thing Bloomberg Law (2018)
- Family Planning/Abortion Hearing Draws Crowd; Internet Sales Tax Proposal Tweaked NET News (2018)
- Justices Likely To Set New Tax Standard For Remote Vendors Law 360 (2018)
- High Court Signals Interest In Hearing 2nd State Tax Case Law 360 (2018)
Other
- Iowa Expands Renewable Fuel Incentives, Ethanol Producer Magazine, July 2011
- Iowa Decision Upholds Tax Assessment Against Out-of-State Franchisor, Law Journal Newsletter's Franchising Business & Law Alert, February 2011
- Iowa Tax Case Could Cost Nation’s Franchises, Franchising World, September 2010
- IRS May Lengthen Depreciation Schedule for Ethanol Plants—But Relief is Possible, Ethanol Producer Magazine, December 2009
Education
- J.D., highest distinction, 2005, University of Iowa College of Law
- B.S., magna cum laude, 2002, Oklahoma State University
Areas of Expertise
Appointments
- Professor of Law, 2020
- Associate Professor of Law, 2017
- Assistant Professor of Law, 2012