About
Kevin E. Thorn is the Managing Member of Thorn Law Group and a Washington, DC tax attorney focused on civil and criminal tax controversies. He represents individuals, businesses, tax professionals, trusts, banks, accounting firms, and other clients in federal and state tax matters. His practice includes IRS audits, voluntary disclosures, offshore accounts, international tax, administrative appeals, collections, professional-responsibility investigations, cryptocurrency disclosures, and complex civil or criminal tax litigation.
Thorn earned an LL.M. from Boston University School of Law, a J.D. from Nova Southeastern University School of Law, and a B.A. from the State University of New York. His advanced tax education complements prior government experience with the Internal Revenue Service and U.S. Tax Court. That background gives him direct familiarity with tax enforcement, administrative procedure, and the decision-making processes that shape high-stakes disputes with taxing authorities.
Thorn previously served as an IRS attorney and Acting Chief of Enforcement for the IRS Office of Professional Responsibility. He also clerked for Judge Laurence J. Whalen of the U.S. Tax Court and later chaired a tax controversy practice at a major Southeastern law firm. His current work includes representing taxpayers before the IRS, Department of Justice, U.S. Tax Court, Office of Professional Responsibility, IRS Whistleblower Office, and state taxing authorities.
Kevin E. Thorn brings government, judicial, and private-practice experience to tax disputes involving financial reporting, investigations, penalties, and litigation. He participates in American Bar Association tax committees and tax-penalty initiatives and works with clients whose matters can involve domestic and international reporting obligations. His practice is centered on analyzing tax exposure, responding to enforcement activity, and developing strategies for resolving complex civil or criminal tax controversies.
Law Office Affiliations
- Managing Partner, Thorn Law Group
- Member, District of Columbia Bar
- Member, New Jersey State Bar Association
- Member & Active Contributor, American Bar Association
- Member & Contributor, ABA Section of Taxation’s Civil & Criminal Tax Penalties Committee
- Member, J. Edgar Murdoch Inn of Court (U.S. Tax Court)
- Member, Civil & Criminal Tax Penalties Task Force
- Member, IRS Offshore Voluntary Disclosure Task Force
Licensed State
- District of Columbia
- New Jersey
Education
- Boston University School of Law
Master of Laws (LLM) - Nova Southeastern University School of Law
Juris Doctor (JD) - State University of New York
Bachelor of Arts (BA)
Awards & Badges



- Business
- Business Litigation
- Civil Rights
- Estate Planning
- Lawsuits & Disputes
- Litigation
- Tax





