U.S. Tax Court Petition: File Your Case Before the 90 Days Run
You received the Statutory Notice of Deficiency — the 90-day letter. This is the IRS's final determination. You have exactly 90 days to petition the U.S. Tax Court. Miss this deadline and you lose your right to judicial review without first paying the tax. The Tax Court is a national court that travels to major cities, hears only tax cases, and has judges with deep tax expertise. You do not pay the disputed tax upfront — and that is the single most important reason to go to Tax Court instead of paying and suing for a refund later.
Filing a Tax Court Petition — The Process
Receive the 90-Day Letter
The Statutory Notice of Deficiency (Letter 3219 or 531) is the IRS's final determination before assessment. The 90-day clock starts on the date printed on the letter. Record this date and calendar the deadline immediately — it is jurisdictional.
Choose Your Case Type
Small case (S case): for amounts $50,000 or less per year. Simplified procedure, no formal brief required, no appeal right, not precedential. Regular case: for larger amounts, requires formal pleadings and briefs, appealable to U.S. Court of Appeals. Choose carefully — the election affects your appeal rights.
Prepare the Petition
The petition must include: your name, address, and Tax ID; the tax years and amounts in dispute; the IRS office that issued the notice; a clear statement of why you disagree with each adjustment; the facts supporting your position; and your signature. Attach a copy of the 90-day letter.
Pay the Filing Fee & Submit
The filing fee is $60, payable by check or money order to 'Clerk, U.S. Tax Court.' File the petition with the Tax Court in Washington, D.C. The petition must be RECEIVED (not postmarked) by the 90-day deadline. Send by certified mail or private delivery service with tracking.
Trial & Decision
After the petition is filed, the IRS answers and the case proceeds through discovery and, in many cases, settlement negotiations. Most Tax Court cases settle before trial. If not, a judge hears the case (typically in the nearest major city on the Tax Court's trial calendar) and issues a decision.
Tax Court vs. Other Judicial Options
Tax Court: No Prepayment
You do not pay the disputed tax before trial. No assessment until final decision. $60 filing fee. Judges specialize in tax law. Small case option for disputes $50K or less. CDP determinations are also appealable here.
District Court: Pay First, Sue Later
Must pay the full tax, file an administrative refund claim (Form 843 or 1040X), wait for denial or 6 months, then sue. Jury trial available. Must be represented by an attorney admitted to that district's federal bar. Higher costs, more formal procedure.
Court of Federal Claims
Similar to District Court — must pay first, then sue for refund in Washington, D.C. Judges are tax specialists. No jury. Good forum for complex tax refund cases. Same prepayment requirement as District Court.
CDP Appeals to Tax Court
If you receive an adverse CDP determination from IRS Appeals, you have 30 days to petition the Tax Court for review. The court reviews whether the Appeals Officer abused discretion. Same $60 filing fee, no prepayment of underlying liability required.