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Taxpayer Defense Center

NTUF’s Taxpayer Defense Center (TDC), our public interest litigation arm, argues in court for taxpayers’ rights. Our lawyers challenge overzealous, unfair tax administration, and TDC lawsuits have led to better policy and wins worth tens of millions of dollars for individuals and businesses nationwide.

Active Litigation 

Past Litigation

Amicus Briefs 

Contact TDC

Blog 

NTUF Files Brief to Stop IRS Stealing Taxpayer’s Money

by Joe Bishop-Henchman, Lindsey Carpenter March 24, 2025

Blog 

Maryland’s Digital Advertising Tax Faces Seemingly Endless Litigation

by Joe Bishop-Henchman, Lindsey Carpenter March 06, 2025

Commentary 

U.S. Treasury and IRS Propose Changes That Could Harm Taxpayers

by Lindsey Carpenter, Joe Bishop-Henchman, Pete Sepp February 24, 2025

Letters 

DC's Red Light Fine Pilot Program Must Treat All Low-Income Drivers Equally

by Lindsey Carpenter, Joe Bishop-Henchman February 24, 2025

Blog 

Amicus Brief: USF Fee on Phone Bills Violates No Taxation Without Representation Principle

by Tyler Martinez February 19, 2025

NTUF Response to Lower South Platte Water Conservancy District’s Resolution

by Tyler Martinez January 30, 2025

Blog 

Supreme Court Declines to Consider Double Taxation Case

by Joe Bishop-Henchman, Lindsey Carpenter January 13, 2025

Blog 

NTUF Helps Protect Taxpayers in FTC’s Final “Deceptive Fees” Rule

by Joe Bishop-Henchman, Lindsey Carpenter December 19, 2024

Blog 

Biden Administration Asks Supreme Court Not To Take Double Taxation Case

by Joe Bishop-Henchman, Lindsey Carpenter December 12, 2024

Blog 

Protecting Privacy and Advocacy: Dangerous Proposed Amendments to Federal Rule of Appellate Procedure Rule 29

by Tyler Martinez December 11, 2024

Blog 

NTUF Continues the Fight Against 95% Tax as an Excessive Fine

by Tyler Martinez November 13, 2024

Blog 

Third Circuit Hears Oral Arguments on Tax on Prescription Drugs Cases

by Lindsey Carpenter, Tyler Martinez November 08, 2024

Blog 

NTUF Urges Fourth Circuit to Strike Down Maryland’s ‘Tax Speech’ Ban, Defending First Amendment

by Tyler Martinez November 07, 2024

Blog 

Eighth Circuit Hears Oral Arguments for High Stakes 3M Case

by Lindsey Carpenter, Tyler Martinez October 29, 2024

Blog 

Massachusetts Land Court Hears Case on Property Owner’s Rights

by Lindsey Carpenter October 23, 2024