U.S. Tax Court

Challenging an IRS notice of deficiency in the U.S. Tax Court, before paying the disputed tax.

When the IRS issues a notice of deficiency, you can challenge it in the United States Tax Court before paying any of the disputed tax. For many taxpayers this is the only realistic way to contest the IRS's proposed tax before it is assessed, and the process can feel intimidating: the IRS has attorneys whose sole job is defending the government's position.

We help clients navigate the U.S. Tax Court with confidence, explaining the process, preparing the petition, and protecting your rights throughout the case. Whiteford represents taxpayers from the first notice through trial.

What sets the Tax Court apart

The U.S. Tax Court is a federal court that hears disputes between taxpayers and the IRS before any tax is paid. That is different from U.S. District Court, which generally requires paying the assessed tax first and then filing a refund claim. For many taxpayers, Tax Court is the only realistic way to challenge the IRS's proposed tax without draining resources to pay the full amount the government claims is due.

Tax Court litigation often involves disagreements about income reporting, disallowed deductions, penalties for late filing, or alleged underpayment of tax. These issues are governed by complex tax law and strict court procedures, and filing deadlines are unforgiving: missing the 90 day window to file a petition after receiving a notice of deficiency can mean losing the right to contest the deficiency in Tax Court.

Civil cases only, including fraud penalties

The Tax Court hears civil disputes only, over issues such as business expense deductions, employment tax controversies, or penalties for failure to file. Civil cases are serious because penalties and interest can grow quickly, creating large balances that burden families and businesses.

Some civil cases involve fraud. The IRS can assert a civil fraud penalty of 75 percent of the underpayment that fraud caused, and it must prove the fraud by clear and convincing evidence. Criminal tax charges, such as willful evasion or filing a false return, are not heard in the Tax Court. The Justice Department prosecutes them in federal district court. If a civil case shows signs of criminal exposure, get advice before you say or file anything more.

Why representation matters

Tax Court litigation is a formal process with pleadings, discovery, and potential trial, and the government has an attorney representing its side from the beginning. Taxpayers who try to handle a case alone risk missing deadlines, failing to present the right evidence, or being pressured into an unfavorable settlement.

We prepare every case as if it will go to trial, gathering documents, working with experts when necessary, and negotiating from a position of strength. Our experience in both civil and criminal tax law protects you whether the case settles or moves forward in court. See our Tax Appeals & Litigation overview for how a dispute moves from an IRS notice through appeal or trial.

Frequently asked questions

What is the difference between the U.S. Tax Court and U.S. District Court?
The U.S. Tax Court hears disputes between taxpayers and the IRS before any tax is paid, which lets you contest the IRS's proposed tax without first paying it. U.S. District Court generally requires paying the assessed tax first and then filing a claim for a refund. For most taxpayers, Tax Court is the only realistic way to challenge a notice of deficiency without paying it first.
How long do I have to petition the Tax Court after a notice of deficiency?
You generally have 90 days from the date of the notice of deficiency to file a petition with the U.S. Tax Court. This deadline is unforgiving: missing it can mean losing the right to contest the deficiency in Tax Court. Because the window is strict, it is worth speaking with an attorney as soon as a notice of deficiency arrives.
What kinds of disputes does the Tax Court handle?
The Tax Court hears only civil cases, such as disagreements over income reporting, disallowed deductions, penalties for late filing, or alleged underpayment of tax, including issues like business expense deductions and employment tax controversies. Some involve the civil fraud penalty, where the IRS must prove fraud by clear and convincing evidence. Criminal tax charges are not heard in the Tax Court; the Justice Department prosecutes them in federal district court.
Do I need an attorney to litigate in the U.S. Tax Court?
You are not required to have one, but Tax Court litigation is a formal process with pleadings, discovery, and a potential trial, and the IRS is represented by its own attorney from the start. Handling a case alone risks missing deadlines, failing to present the right evidence, or being pressured into an unfavorable settlement, which is why most taxpayers bring in counsel.

Where we handle U.S. Tax Court

All Whiteford offices handle this work.

Colorado

Denver

2128 West 32nd Avenue
Denver, CO 80211
(720) 419-1296
Delaware

Bethany Beach

26 N. Pennsylvania Avenue
Bethany Beach, DE 19930
(302) 829-3043
Delaware

Rehoboth Beach

18949 Coastal Highway
Rehoboth Beach, DE 19971
(302) 829-3043
Delaware

Wilmington

600 North King Street
Suite 300
Wilmington, DE 19801
(302) 337-5359
District of Columbia

Washington, DC

1717 Pennsylvania Avenue NW
Suite 1300
Washington, DC 20006
(202) 972-6503
Florida

West Palm Beach

222 Lakeview Avenue, Suite 1550
West Palm Beach, FL 33401
(561) 282-9850
Kentucky

Lexington

250 West Main Street, Suite 1800
Lexington, KY 40507
(859) 687-6700
Maryland

Baltimore

7 St Paul Street
Suite 1500
Baltimore, MD 21202
(410) 498-6815
Maryland

Columbia

8830 Stanford Boulevard
Suite 400
Columbia, MD 21045
(410) 431-1954
Maryland

Ocean City

7408 Coastal Highway
Ocean City, MD 21842
(302) 829-3043
Maryland

Rockville

111 Rockville Pike
Suite 800
Rockville, MD 20850
(410) 347-8730
Maryland

Towson

Towson Commons, Suite 300
One West Pennsylvania Avenue
Towson, MD 21204-5025
(443) 278-2191
New Jersey

Fairfield

375 Passaic Avenue
Suite 100
Fairfield, NJ 07004
(973) 227-5900
New York

New York

444 Madison Avenue
4th Floor
New York, NY 10022
(646) 618-8660
New York

White Plains

1025 Westchester Avenue, Suite 106
White Plains, NY 10604
(914) 580-9176
North Carolina

Charlotte

4064 Colony Road
Suite 315
Charlotte, NC 28211
(980) 242-5001
Pennsylvania

Pittsburgh

11 Stanwix Street
Suite 1400
Pittsburgh, PA 15222
Virginia

Falls Church

3190 Fairview Park Drive
Suite 800
Falls Church, VA 22042
(703) 280-9260
Virginia

Richmond

Two James Center, 1021 E. Cary Street
Suite 2001
Richmond, VA 23219
(804) 485-1492
Virginia

Roanoke

10 S Jefferson Street
Suite 1110
Roanoke, VA 24011
(540) 759-3560
Virginia

Virginia Beach

249 Central Park Avenue
Suite 300-91
Virginia Beach, VA 23462
(757) 208-9512
Contact Michael March