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CPA Joe Mastriano’s Tax Court Petition Playbook for U.S. Taxpayers

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A tax court petition opens a formal case challenging an IRS determination, and most taxpayers have 90 days from the mailing date on their Statutory Notice of Deficiency to file one. Check your notice for its exact deadline first. Then gather your documents, and file through DAWSON online or by mail before that date passes, since missing it usually closes the door to Tax Court entirely.

TL;DR:

  • Filing by the 90-day deadline is critical; missing it generally prevents the Tax Court from hearing your case and shifts you to refund suits in other courts.
  • The most common notice triggering a petition is the Statutory Notice of Deficiency, which gives you 90 days if mailed within the U.S., or 150 days if sent internationally.
  • E-filing via DAWSON is faster, confirms instant receipt, and provides a docket number on submission but requires all documents to be prepared before logging in.
  • Only one filing method should be used; filing both electronically and by mail creates confusion and is prohibited, while deadlines are strict and missed filings are final.
  • The $60 filing fee can be waived if you demonstrate genuine financial hardship, and self-representation is common for straightforward cases, but larger or more complex disputes benefit from professional help.

Table of Contents

How Do You Start a Tax Court Petition Case?

A petition is the document that opens your case with the United States Tax Court, and you can only file one after the IRS sends you a specific type of notice that grants that right. The most common trigger is the Statutory Notice of Deficiency, widely known as the 90-day letter. It arrives after an audit or an IRS adjustment when the agency believes you owe more tax than you reported. But it’s not the only notice that qualifies.

Several other IRS determinations also carry petition rights:

  • Notice of determination following a Collection Due Process hearing on a lien or levy
  • Notice of determination in an innocent spouse relief request
  • Notice of determination denying a request for interest abatement
  • Certain worker classification determinations affecting employment tax status

Anyone who received the notice can petition, including joint filers who received a joint notice. If you and your spouse got a single deficiency notice, you can file jointly on one petition or separately. Read the notice carefully. It states exactly which office issued it and what the deadline is, and that address matters later when you fill out the petition itself.

You have two practical paths for filing. The first is DAWSON (Docket Access Within and Secure Online Network), the court’s electronic filing system, which the Tax Court recommends because it confirms receipt instantly and assigns a docket number the moment you submit. The second is paper filing: mailing or hand-delivering a completed petition to the court’s Washington, D.C. address. The court publishes its official Petition Kit, which includes T.C. Form 2 and complete instructions, directly on ustaxcourt.gov. If your case involves a smaller dollar amount, you can also elect simplified “small case” procedures on that same form, which we’ll cover later.

How Do You E-File a Petition in DAWSON?

E-filing is faster, gives you a docket number the same day, and eliminates the risk of a petition getting lost in the mail. But DAWSON has one quirk that trips people up constantly: you cannot save a partially completed session and come back to it later. Everything needs to be ready before you log in.

Before you start, assemble these items as PDFs:

  1. A scanned or saved copy of the IRS notice that gives you the right to petition
  2. Any supporting documents relevant to the disputed issue (return copies, correspondence, payment records)
  3. A completed Statement of Taxpayer Identification Number (STIN) form, which holds your Social Security number or EIN separately from the public petition
  4. A government-issued photo ID if you’re setting up a new DAWSON account
  5. A clear note of the exact deadline date printed on your notice

Pro Tip: Draft your issue statements and facts in a word processor first, then paste them into DAWSON. Typing directly into the system risks losing your work if the session times out.

Once you’re ready, the filing sequence works like this:

  1. Create a DAWSON account at ustaxcourt.gov if you don’t already have one.
  2. Select “Start a Case” from your dashboard.
  3. Work through the seven-step Create-a-Case prompts, which ask about the type of case, the notice you received, and the tax years involved.
  4. Choose your petition method. DAWSON lets you use its guided petition generator, upload a completed T.C. Form 2, or upload a custom-drafted petition, depending on what fits your situation.
  5. Upload your IRS notice and supporting documents in the formats DAWSON specifies.
  6. Pay the $60 filing fee online, or indicate you’re requesting a waiver.
  7. Submit and receive your docket number immediately on confirmation.

The most frequent mistakes are avoidable with a little care. Uploading an incomplete notice, or the wrong notice entirely, is the top one. Some taxpayers upload a collection notice when the case actually concerns a deficiency notice, which confuses the record from day one. Others file both electronically and by mail, thinking it improves their odds. The court has been explicit that filing by both methods is improper and creates duplicate docket confusion rather than backup protection. Pick one method and stick with it.

Timing is unforgiving too. DAWSON accepts submissions until 11:59 p.m. Eastern Time on the due date. If you’re filing at 11:45 p.m. on the deadline and your internet connection drops, you’re out of options until midnight passes you by. File early in the day, not the final hour.

What Are the Deadlines for Filing a Tax Court Petition?

The clock starts running the moment the IRS mails your notice, not the day you happen to open the envelope. For a standard Statutory Notice of Deficiency, you generally have 90 days from the mailing date to file your petition. If the notice was addressed to you outside the United States, that window extends to 150 days.

  • 90 days: standard deadline for a notice mailed to a U.S. address
  • 150 days: applies when the notice was addressed outside the United States
  • Varies by notice type: innocent spouse determinations, employment tax determinations, and interest-abatement denials each carry their own petition windows printed on the notice itself

Deadlines for petition types other than the standard deficiency notice do not follow the 90 or 150-day pattern automatically. Always check the specific number printed on your notice rather than assuming.

Miss the deadline and the consequences are severe: the Tax Court generally has no authority to hear a late petition, regardless of how strong your underlying argument might be. That’s not a technicality the court waives for good reasons. If that happens, your remaining options shift outside Tax Court entirely. You would typically need to pay the assessed amount and then file a refund suit in a U.S. District Court or the Court of Federal Claims, a route that costs more upfront and moves on a different timeline. IRS Publication 5 walks through when judicial review is available and where Tax Court jurisdiction ends.

What Should You Include in a Tax Court Petition?

The petition itself follows a structured format, and the court’s Petition Kit and T.C. Form 2 walk through each required field. Getting these right the first time saves you from amendments and clarifying orders down the road.

Lines 1 through 6 of the standard petition ask for:

  • Type of case and the specific notice you’re contesting
  • The IRS office that mailed the notice, along with the mailing date shown on it
  • Tax years or periods at issue, listed precisely as they appear on your notice
  • Election of regular or small case procedure (“S case” designation for amounts generally under a set threshold, which uses simplified rules and typically skips formal appeal rights)
  • A numbered list of issues you dispute, labeled A, B, C, and so on
  • A statement of facts supporting each issue, written in plain, specific language

Pro Tip: Keep each issue statement to one or two sentences and let the facts section do the explaining. Petitions that ramble under the “issues” heading make it harder for the court and IRS counsel to see what you’re actually disputing.

Here’s what clear phrasing looks like in practice:

  • “A. Whether petitioner is entitled to a business expense deduction of $14,200 for vehicle use disallowed in the notice.”
  • “B. Whether the accuracy-related penalty under section 6662 was properly applied given petitioner’s reasonable reliance on a paid preparer.”
  • “C. Whether respondent correctly calculated petitioner’s gross income by including settlement proceeds that petitioner contends are excludable.”

Notice how each one names a dollar figure or code section where relevant and states the dispute as a yes-or-no question the court can rule on. Vague statements like “the IRS is wrong” give the court nothing to work with.

Signature rules differ by filing method. Paper petitions require an original signature (or your representative’s), and joint petitions need both spouses to sign if you’re filing together. E-filed petitions in DAWSON use an electronic signature process tied to your account, with your STIN filed as a separate document so your Social Security number never appears on the public docket.

What Is the Tax Court Filing Fee and Can You Get a Waiver?

The filing fee is $60, and you can pay it three ways: online through DAWSON during e-filing, by check or money order mailed with a paper petition, or in person at the courthouse. It’s a flat fee regardless of how many years or issues your petition covers, as long as they’re all tied to the same notice.

If paying the fee would create a genuine financial hardship, you can request a waiver instead of paying:

  • File an Application for Waiver of Filing Fee, available through the Petition Kit or the court’s forms page
  • Include a statement describing your financial situation and inability to pay
  • Submit the waiver request alongside your petition, not as a separate later filing
  • Expect the court to rule on the waiver based on the information you provide, without a hearing in most cases

Don’t let a $60 fee stop you from preserving your rights. Filing for a waiver takes a few extra minutes and costs nothing.

Who Can Represent You in Tax Court?

You have the right to represent yourself, known as appearing “pro se,” and a substantial share of Tax Court petitioners do exactly that, especially in small case proceedings. But you also have the option to hire someone from the court’s official roster of admitted practitioners, which includes attorneys and non-attorneys who’ve passed the Tax Court’s own admission exam.

  • Pro se filing works reasonably well for straightforward disputes with clear documentation and modest dollar amounts.
  • CPAs admitted to the Tax Court bar can represent you fully, not just advise from the sidelines.
  • Tax attorneys handle cases involving complex legal questions, large liabilities, or overlapping collection actions.
  • Low Income Taxpayer Clinics provide free or low-cost representation for taxpayers who meet income eligibility criteria, often through law school clinics or nonprofit organizations.
  • Taxpayer Advocate Service can help when you’re facing a systemic IRS problem or economic hardship, but it doesn’t litigate your Tax Court case for you.

A rough rule of thumb: the larger the proposed liability, the more legal issues stacked on top of each other, or the more IRS enforcement actions already underway (levies, liens, wage garnishment), the stronger the case for hiring representation. Bring your notice, prior-year returns, and any correspondence with the IRS to an initial consultation so a practitioner can assess your case quickly.

What Happens After You File Your Petition?

Once your petition is accepted, whether through DAWSON or by mail, the court assigns a docket number almost immediately for e-filed petitions and typically within a few weeks for paper filings. That docket number becomes your case’s permanent identifier, and you can track status updates through DAWSON once it’s assigned.

  • Docket number assignment happens on submission for e-filed cases; check DAWSON for confirmation.
  • Settlement remains possible even after filing. The IRS Office of Appeals frequently reviews docketed cases and negotiates resolutions before trial, so filing a petition doesn’t lock you into a courtroom outcome.
  • Case monitoring happens through your DAWSON account, where you’ll see scheduling orders, IRS counsel filings, and any deadlines tied to your specific docket.
  • Privacy protection works through the STIN process: your Social Security number, ITIN, or EIN appears only on that separate form, never on the petition itself or the public docket record.

Keep your STIN and notice copies somewhere secure. If your case does head toward trial rather than settlement, having organized records from day one saves considerable time later.

When to Get Professional Help With Your Tax Court Case

Some petitions genuinely are simple enough to handle alone: a single disallowed deduction, a clear documentation gap, a modest dollar figure. Others are not, and recognizing which category you’re in early can change your outcome significantly.

Consider bringing in a professional when:

  • The proposed liability runs into the tens of thousands of dollars or higher
  • The IRS has also filed a levy or lien alongside the deficiency notice
  • Your case spans multiple tax years or involves overlapping issues (deductions, penalties, and income reclassification all at once)
  • You’re facing accuracy-related or fraud penalties on top of the base tax
  • You’ve already tried resolving the issue with the IRS and the notice followed anyway

Taxproblem, led by Joe Mastriano, CPA, works directly with taxpayers on petition drafting, representation before the Tax Court, audit defense, and negotiating Offers in Compromise when a case settles before trial. If you’re weighing whether to hire help, a free evaluation of your IRS situation is a low-risk way to find out what you’re actually facing.

Before a consultation, pull together your notice, the last three years of tax returns, any prior IRS correspondence, and a rough summary of the disputed amount. That preparation alone often shortens the first meeting considerably and helps determine realistic next steps, including likely costs if you decide to move forward with representation.

Notes From the Trenches on Filing a Petition

The mistakes that sink petitions rarely involve complicated tax law. They’re procedural, and they’re avoidable. Timing errors top the list: taxpayers who wait until the final week, then discover their notice has an earlier deadline than they assumed because they misread the mailing date. Weak issue statements come next. “I disagree with the IRS” isn’t an issue statement a court can rule on.

Duplicate filings and incomplete evidence round out the pattern. Prepare everything before you open DAWSON, keep copies of every document you submit, and confirm your docket number arrived before you consider the matter closed. None of this requires legal training. It requires slowing down for one afternoon before a deadline that won’t move for anyone.

— Joe

How Taxproblem Helps You File and Win Your Tax Court Case

Filing a petition correctly is only the first hurdle. Building a case that actually holds up when IRS counsel starts asking questions is where most self-filed petitions fall apart. Taxproblem gives you a direct alternative to guessing your way through DAWSON alone: petition drafting handled by someone who has spent 45-plus years dealing with the IRS, representation carried through to trial or settlement, and full audit defense if your case grew out of an examination in the first place.

Taxproblem

If your notice involves a proposed liability tied to unresolved back taxes, penalties, or an ongoing collection action, Taxproblem also negotiates Offers in Compromise and payment arrangements once your Tax Court matter is resolved or settled. Bring your Statutory Notice of Deficiency, your last few years of returns, and any prior IRS letters to a free evaluation of your situation. You’ll walk away knowing exactly where your case stands and what filing, or fighting, actually costs before you commit to anything.

This article is general information, not a substitute for advice from a qualified lawyer. Consult a qualified legal professional about your own circumstances before acting on anything here.

Sources

FAQ

Is It Worth Going to Tax Court?

For many taxpayers, yes, especially because Tax Court lets you dispute the IRS without paying the disputed amount first, unlike a refund suit in district court. Whether it’s worth it for your specific case depends on the amount at stake, the strength of your documentation, and whether a professional believes negotiation with IRS Appeals is likely to resolve things faster.

What Is a Tax Court Petition?

A tax court petition is the legal document that opens a case with the United States Tax Court, typically filed after receiving a Statutory Notice of Deficiency or another qualifying IRS determination. It states which tax years and issues you’re disputing and the facts supporting your position.

How Much Does It Cost to Go to Tax Court?

The Tax Court filing fee is $60, payable online through DAWSON, by mail, or in person, with a waiver available for taxpayers who can’t afford it. Beyond that fee, costs vary widely depending on whether you represent yourself or hire a CPA or tax attorney.

How Long Do You Have to Petition Tax Court After a Notice of Deficiency?

You generally have 90 days from the date the notice was mailed to file your petition, extended to 150 days if the notice was addressed outside the United States. Missing that window typically closes the door to Tax Court, leaving a refund suit in district court as the remaining path.

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