Background & History

Kieran Carter joined Frost Law in 2026 as Of Counsel, bringing a wealth of knowledge in federal tax controversy, tax strategy, and estate/fiduciary litigation. Kieran spent the past 10 years of her legal career litigating high-stakes tax cases as a senior Trial Attorney in the U.S. Department of Justice’s Tax Division. There, she led litigation teams in some of the most complex tax cases in the country, involving multi-million-dollar disputes, complicated trust structures, FBAR and FATCA compliance, and closely-held assets. Today, she leverages her insider knowledge of the IRS and DOJ to maximize her clients' outcomes.

Kieran also served in DOJ leadership as Counsel to the Deputy Assistant Attorney General for Policy and Planning at the Tax Division, advising on tax cases before the Supreme Court and handling sensitive matters involving the IRS, Congress, and the White House. Prior to DOJ, she was a criminal prosecutor for five years for the Commonwealth’s Attorney’s Office in Fairfax County, VA, where she tried over 400 bench trials and 24 jury trials.

In 2025, Kieran started Oakgrove Legal Strategies, where she helps clients navigate sophisticated tax strategies, trust administration, and estate transitions. At Frost Law, Kieran helps clients navigate tax controversies, as well as providing sophisticated federal tax planning services. She offers tax advice not in isolation, but as part of a broader, integrated wealth management strategy that considers estate planning and potential litigation risks. Kieran is deeply committed to her clients and is known as someone who empathetically listens to her clients' needs. She is based in Arlington, Virginia, and enjoys hiking with her family and two labrador retrievers.

Kieran Carter

Of Counsel

kieran.carter@askfrost.com

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Of Counsel

Kieran Carter

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Estates and Trusts

Tax Law

International Tax Consulting

Litigation

Precision

Every detail matters in litigation

The difference between winning and losing often comes down to what you noticed that others missed. I don't overlook anything.

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Clarity

You need to understand your options

Legal jargon clouds judgment. I explain your situation plainly so you can make decisions with full knowledge of what's at stake.

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Specialties

Six practice areas, one standard

The law doesn't fit neatly into boxes, but the problems people face do. I've spent years learning what works in each arena.

Criminal

Defense when the stakes run highest

The first hours after arrest determine everything. I know how to protect your rights when it matters most.

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Family

Custody and divorce require clear thinking

Family law isn't about winning. It's about protecting what matters most to you and your children.

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Business

Contracts and disputes demand precision

Most business problems start with unclear agreements. I help prevent them before they become costly litigation.

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Appeals

Winning on appeal requires different strategy

Appeals aren't about retrying your case. They're about finding what was missed and making it matter.

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Employment

Your rights at work deserve aggressive defense

Employers count on you not knowing your rights. I make sure you do and that they're protected.

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White collar

Complex cases need someone who understands

Federal charges and financial crimes require specialized knowledge. I know how to navigate the details that prosecutors rely on.

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Writing

Thoughts on the law

Practical insight for your case and situation

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Criminal

Foundation

Decades of courtroom work shaped my approach

I've seen what wins cases and what doesn't. The difference lies in preparation, clarity, and the willingness to challenge every assumption. Your case deserves someone who knows the weight of these decisions.

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Strategy that works

Every case demands a fresh look and a willingness to question everything.

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Results matter most

What you need is someone who knows how to win and won't settle for less.

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Direct and honest

No promises you can't keep, no strategies that don't serve your interests.

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Trusted by clients across every practice area

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Criminal defense

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Family law

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Business law

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Advocate

Built on experience and honest counsel

Twenty years in the courtroom taught me that the best legal strategy is the one that works. I listen first, act decisively, and never waste time on anything that doesn't serve your case.