Kevin appears in the 

Top 100 Attorneys Magazine


Kevin E. Thorn 

Known as an ultimate Washington, D.C. insider, Kevin E. Thorn is one of the area’s most popular “go-to” tax attorneys   —representing a vast range of clients across the United States as well as throughout the world. As managing partner of Thorn Law Group, PLLC, he assists high net worth individuals, businesses, professional athletes, artists, banks, corporations, and many others in both civil and criminal matters and in resolving complex tax and legal issues. Recently, we had the pleasure of speaking with Kevin and learning more about his leading practice. 

Let’s start by going back to the founding of Thorn Law Group. What motivated you to establish your own firm?

Early on in my career, I recognized that most of the larger firms were assigning cookie cutter cases to their attorneys and the clients were being treated as numbers. The impersonal (and sometimes inadequate) service I witnessed inspired me to become more client-centric. In other words, I wanted to open a boutique firm that offered proactive, individualized services that would meet the specific legal needs of each client. That’s why I personally selected each member of the dedicated, passionate team of professionals who make up Thorn Law Group. Our attorneys hold prior government, private law firm, and accounting firm experience in order to best serve the interests of both our national and international clients. We are also selective in who we represent, so everyone is guaranteed the full service of our firm. 

Thorn Law Group has offices in Maryland, Virginia, New Jersey, and Massachusetts, so why choose Washington, D.C. as your headquarters?

I strategically chose to maintain my office in D.C. for a home field advantage and to further develop and grow our professional relationships. Washington, D.C. is where all the major government headquarters and policy makers reside, and the in-person accessibility helps the Thorn Law Group to successfully navigate the complex legal landscape for the benefit of our clients. As a result, our attorneys have gained significant exposure and experience practicing before the Internal Revenue Service, the United States Tax Court, the Department of Justice, the Court of Federal Claims, state courts, the IRS’s Office of Professional Responsibility, and the IRS Whistleblower Office. 

What are the firm’s primary practice areas? 

We have an amazing team of former government attorneys, so there are very few firms that can offer our level of experience. We are jacks of all trades. My partner Mary Elizabeth Rinaldi and I take a collaborative approach doing IRS work and government work, both civil and criminal. Then, we add in the international tax planning on a super high level. Our attorneys also focus on representing sensitive federal tax disputes, tax controversies, and tax litigation problems. They consult with counsel on business and employment tax, criminal tax investigations, IRS audits and appeals, international tax issues, and offshore account issues. 

What are your personal areas of expertise? 

I’m highly sought after to represent attorneys, CPAs, both U.S. and international businesses, and other tax professionals in ethics audits before the IRS, the IRS Office of Professional Responsibility, the IRS Whistleblower Office, the U.S. Department of Justice, the U.S. Tax Court, and state licensing boards. I frequently handle cases involving IRS audits, agreements, investigations, and criminal examinations, IRS voluntary disclosures, administrative appeals and protest of IRS determinations, 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. I also receive referrals for clients considering estate planning, wealth management, asset protection, and business planning transactions as my unique perspective brings benefits to them as well. 

Tell us a bit more about the range of clients your firm represents. 

Thorn Law Group serves clients in all 50 states and U.S. territories as well as most countries around the world. Our clients include individuals, tax professionals, partnerships, trusts, banks, closely held businesses, accounting firms, law firms, artists, sports teams, athletes, entertainers, and corporations.  We even represent other attorneys, which is unusual, but we have a lot of connections and are effective in getting results in a private manner. Our international clients include U.S. citizens living, working, or earning money abroad; U.S. taxpayers with international trusts; non-U.S. taxpayers with U.S.-sourced income; U.S. businesses with operations in other countries; international businesses with U.S. tax reporting requirements and tax liabilities; U.S. and non-U.S. entertainers with worldwide income; and expatriates.  Our team also works with high net worth individuals and does estate planning both nationally and internationally with the ability to do tax planning and tax planning succession on a global scale.

How does Thorn Law Group give back to the community?

My partner, Mary Elizabeth, is heavily involved with several women’s rights groups, and the entire firm works with the Washington Kastles tennis team in D.C., the Washington Ballet, and the Bill Belichick Foundation, which provides coaching, mentorship, and financial support to future professionals. The Thorn Law Group also supports local animal organizations and frequently contributes to local women’s shelters, athletic organizations for the youth, and the arts. Since we all work with artists, athletes, and entertainers we take pride in staying involved with the community.

1775 Eye Street, NW, Suite 1150, Washington, DC 20006

Instagram: @thorntaxlaw


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