Experienced Tax Attorneys

Call Us Confidentially Now: 240-235-5096

Call us confidentially now:

Kevin E. Thorn

Managing Partner


Mr. Thorn is recognized as a leader in his area of practice throughout the country and across the globe. His clients include individuals, tax professionals, trusts, banks, accounting firms, high net worth individuals, corporations and law firms. He has represented taxpayers in federal, state and international tax matters, IRS tax audits, IRS conservation easements, and is known as one of the “go-to” tax attorneys in our nation’s capital and throughout the region.

Mr. Thorn is highly regarded by high-net-worth individuals and heads of companies around the country. In the business of helping his clients solve their complicated tax matters, Mr. Thorn’s expertise is sought after by businesses and individuals across the country. His clients favor his confidentiality and ability to work with high-profile cases in a discreet manner.

Throughout his career, Mr. Thorn has advocated on behalf of his clients before the Internal Revenue Service, the Department of Justice, the United States Tax Court, the Internal Revenue Service’s Office of Professional Responsibility, the Internal Revenue Service’s Whistleblower Office, and DC, Virginia, Maryland and other state taxing authorities.

As managing member of Thorn Law Group, Mr. Thorn and his team of experienced tax professionals can help clients experiencing civil and criminal tax controversies, including:


Mr. Thorn makes a great tax lawyer because his knowledge of the Internal Revenue Service goes beyond just the law. He previously worked with the United States Tax Court and the Internal Revenue Services as an attorney. His unique background lends him a unique perspective when working with cases involving IRS audits, criminal investigations, IRS disclosures, and protests of IRS determinations.

Thorn Law Group is often called upon to provide advice on these cases, as well as matters involving the Department of Justice investigations, and litigation of tax and tax-related cases in U.S. district and appellate courts, the U.S. Court of Federal Claims, and the U.S. Tax Court.

Working from the center of the action – in Washington DC – and from other locations throughout the area, our team can take advantage of their close proximity to the headquarters of the Internal Revenue Service, Department of Justice, United States Tax Court, IRS Whistleblower Office, the IRS’ Office of Professional Responsibility.


Mr. Thorn is a regular speaker and instructor at many professional organizations. He has spoken with and advised banks in Europe, as well as, financial service providers in the Caribbean and other parts of the world regarding FATCA and U.S. information reporting requirements. Mr. Thorn has also spoken on several tax law and government procedure matters to such professional organizations as the American Bar Association’s Section of Taxation, the Federal Bar Association, state bar associations, and several academic and regional conferences. While serving as an attorney for the IRS, Mr. Thorn was a regular instructor at many IRS professional development conferences across the country.

Professional Memberships:


  • Partner and the Chair of the Tax Controversy Practice of a major Southeastern law firm
  • Judicial Law Clerk to the Honorable Laurence J. Whalen of the United States Tax Court
  • IRS Attorney and Acting Chief of Enforcement for IRS Office of Professional Responsibility



  • District of Columbia
  • New Jersey

To learn more about how a Maryland tax attorney from the Thorn Law Group can help you with your tax and legal issues, contact Kevin. E. Thorn at (240) 235-5096.

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