How to File a Tax Court Petition: A Legal Overview

08.20.2025

The U.S. Tax Court offers taxpayers a critical venue to dispute federal tax deficiencies determined by the IRS. A Tax Court petition is not merely a procedural filing; it is a legal assertion of a taxpayer’s right to challenge IRS determinations without first paying the contested amount. This article delves into the mechanics, requirements, and legal foundations of filing a Tax Court petition, helping tax practitioners guide clients through this intricate process.

Tax Court Petition Basics

 Tax Court jurisdiction is governed by the Internal Revenue Code (IRC) § 6213(a), which allows taxpayers to contest IRS Notices of Deficiency (commonly called “90-day letters”). A Tax Court petition must generally be filed within 90 days of the date the IRS mails the notice (or 150 days if the taxpayer is outside the U.S.).

The petition provides taxpayers the opportunity to dispute the IRS’s proposed tax adjustments without the obligation to pay the disputed tax amount upfront. Failure to file within the specified time frame results in the IRS assessing the proposed tax liability, and the taxpayer loses the right to Tax Court review.

Legal Framework for Filing a Tax Court Petition

 

    • Notice of Deficiency:

 Under IRC § 6212, the IRS is required to issue a Notice of Deficiency before assessing additional taxes. This notice must state the amount of the deficiency and the basis for the determination, providing taxpayers the legal foundation to challenge the deficiency in Tax Court.

    • Timely Filing:

 IRC § 6213(a) establishes the filing deadline, which is strictly enforced. Tax Court has no authority to extend the filing period, even for reasonable cause or extenuating circumstances.

    • No Prepayment Requirement:

 Unlike federal district courts or the Court of Federal Claims, Tax Court proceedings do not require the taxpayer to prepay the disputed amount. This makes Tax Court an accessible forum for resolving tax disputes.

Filing Process and Petition Content

 

A valid petition must include the following:

    • Taxpayer Identification: The petitioner’s full name, address, and Taxpayer Identification Number (TIN).

    • Copy of the Notice of Deficiency: A copy of the notice must be attached to the petition to establish the Court’s jurisdiction.

    • Clear Statement of Disputed Issues: A concise statement outlining the specific issues the taxpayer disputes and the relief sought.

    • Filing Fee: The current fee is $60, payable to the U.S. Tax Court. Fee waivers may be available for taxpayers experiencing financial hardship.

Representation and Procedural Options

 

Taxpayers may represent themselves (pro se) or hire a qualified representative, such as a tax attorney or a non-attorney admitted to practice before the Tax Court. Once the petition is filed, the case follows a structured process:

    • IRS Response: The IRS must file an answer, admitting or denying the allegations in the petition, typically within 60 days.

    • Pretrial Procedures: Cases are often referred to IRS Appeals for potential settlement before trial. Discovery and stipulations of facts are key steps in this phase.

    • Trial and Decision: If no settlement is reached, the case proceeds to trial. Tax Court trials are informal compared to federal district courts, and decisions are based on the preponderance of the evidence.

Relevance for Tax Practitioners

 

For tax practitioners, understanding the Tax Court’s procedural requirements and legal nuances is essential for effective representation. Key considerations include:

  • Make sure that clients understand the critical relevance of the Notice of Deficiency and the respective filing deadline.
  • Ensuring petitions are complete and accurate to avoid dismissal.
  • Advising clients on settlement opportunities through IRS Appeals to potentially resolve disputes before trial.
  • Evaluating whether the Tax Court is the most appropriate forum based on the nature of the dispute and the client’s financial circumstances. Generally, the Tax Court will be the most cost-effective route for litigation. 

Filing a Tax Court petition is a vital tool for taxpayers seeking to challenge IRS determinations. With strict deadlines and procedural requirements, timely and accurate action is crucial. Tax practitioners play a critical role in guiding clients through this process, ensuring that their rights are protected and the best possible outcome is achieved.