The Tax Court Just Ruled That Signing the Wrong Statute Extension Form Can Lock You In: What Fine v. Commissioner Means

On September 30, 2026, the United States Tax Court issued a precedential ruling that every taxpayer currently in IRS negotiations needs to understand. In Fine v. Commissioner, 167 T.C. No. 13 (2026), the court held that if you signed a specific kind of IRS extension agreement called a Form 872, you cannot walk it back early by sending a termination notice. The window you agreed to stays open, full stop, and the IRS can use every day of it.

What Actually Happened in This Case

The taxpayers in this case, Barry Holmes Fine and Monica Dias, were under IRS examination for their 2015 and 2016 tax years. During the examination, the taxpayers signed Forms 872 to extend the period for assessment, specifically extending the time to assess tax for the 2015 tax year until December 31, 2021, and for the 2016 tax year until June 30, 2021.

When talks with the IRS broke down, their attorney tried a maneuver that seemed logical on the surface. After failed settlement negotiations with the IRS Independent Office of Appeals, the taxpayers faxed Forms 872-T to the IRS on September 11, 2020, attempting to terminate the previously executed Forms 872 and requesting the expeditious issuance of a notice of deficiency. The idea was to force the IRS to act quickly or lose its chance to assess additional tax.

There was a practical problem with that strategy. Because Form 872-T does not provide an option to terminate a Form 872, the taxpayers checked the box indicating an intent to terminate Form 872-A, which is an indefinite consent. In other words, they used a termination form that was designed for a completely different agreement.

The IRS subsequently issued notices of deficiency on April 15, 2021, which was within the periods agreed to on the Forms 872 but more than 90 days after receiving the taxpayers’ Forms 872-T. The taxpayers argued those notices came too late. The Tax Court granted partial summary judgment in favor of the IRS, holding that Form 872-T cannot be used to terminate a Form 872.

Two Forms, Two Very Different Rules

To understand why this ruling matters, you need to know the difference between two IRS extension forms that look similar but work very differently.

Form 872 is a fixed-date extension that extends the statute of limitations to a specific date. For example, if the three-year statute would have expired on December 31, 2026, the IRS may request that the taxpayer sign a 12-month extension to December 31, 2027. Once both parties sign it, you have made a firm agreement tied to a calendar date.

By contrast, Form 872-A is open-ended, and the extension of the statute of limitations granted under it terminates only upon one of three actions: the taxpayer submits a Form 872-T to the IRS, the IRS sends a Form 872-T to the taxpayer, or the IRS issues a notice of deficiency.

The court’s ruling makes this distinction absolute. Judge Ashford held that Form 872-T applies exclusively to open-ended waivers executed on Form 872-A and has no legal effect on a properly executed, fixed-date Form 872. The court put it plainly: “only the passage of time can terminate Form 872.”

Why You Cannot Simply Change Your Mind

It might feel unfair that you can sign an agreement and then be unable to cancel it. The Tax Court addressed that directly. As the court noted, “this Court must adhere to the express provisions of Form 872 and cannot rewrite the agreement made therein between the taxpayer and the IRS.”

The result is straightforward. A Form 872 remains binding until its negotiated expiration date unless the IRS issues a Notice of Deficiency or the parties execute a subsequent written agreement. Signing the form is a waiver of your right to use the normal three-year statute of limitations as a shield, and the court will not let you reclaim that shield early just because negotiations soured.

A taxpayer who has agreed to a date certain on Form 872 cannot unilaterally replace that date by sending a termination notice. That is now confirmed precedent.

What This Means If You Are Currently Under IRS Audit or in Appeals

This ruling has real consequences for anyone who is currently being examined by the IRS or negotiating a resolution through the IRS Independent Office of Appeals.

The IRS regularly asks taxpayers to sign extension agreements when an audit is nearing the end of the normal three-year window. Each time the IRS asks to extend the statute, it must inform the taxpayer of the right to refuse and the right to limit the extension to particular issues or to particular tax periods that are otherwise under audit. You do have rights before you sign. Once you sign a fixed-date Form 872, however, those rights to cut things short are gone.

Here is what that means practically. A taxpayer who wants the ability eventually to force the limitations period toward closure should understand the difference between Forms 872 and 872-A before signing. If you want a way out, Form 872-A with its termination mechanism is the form that gives you one. Form 872 does not.

The opinion leaves no room for ambiguity: Forms 872-T do not terminate Forms 872, and taxpayers who attempt to use them for that purpose do so at their peril.

The Broader Picture: Statute of Limitations as Your Hidden Safeguard

The statute of limitations on IRS assessments is one of the most powerful protections a taxpayer has, and most people do not know it exists. Under the standard rules, the IRS generally has three years from the date you file a return to assess additional tax. Every day that ticks by without an assessment is a day that works in your favor.

When you sign a Form 872, you are voluntarily pausing that clock and handing the IRS more time. That can sometimes make sense, for example, if you want to gather records or negotiate a settlement without the pressure of an imminent deadline. But Fine v. Commissioner is a clear reminder that extending that deadline comes at a cost. You are locked in, and no termination form will get you out early.

If you are behind on filing, owe a tax debt, or have already received an extension request from the IRS, the type of form you sign and the date you agree to are decisions that can follow you for years. Making that choice without professional guidance is a risk that this ruling makes even harder to recover from.

What You Should Do Now

If any of the following apply to you, this ruling is directly relevant to your situation:

• You have received a request from the IRS to sign a Form 872 or Form 872-A and you are not sure which to sign or whether to sign at all.
• You already signed a Form 872 and assumed you could back out if negotiations stalled.
• You are currently under audit or working through the IRS Independent Office of Appeals and a deadline extension is on the table.
• You owe back taxes and the IRS is still determining how much you owe for a specific year.

The decision you make about signing, or refusing to sign, a statute extension could determine whether the IRS has the legal authority to assess additional tax against you. That is not a decision to make alone or under pressure from an IRS notice with a short turnaround.

Clear Start Tax works directly with individuals and businesses who are navigating IRS examinations, appeals, and tax debt resolution. Our team can review your specific situation and help you understand your options before you commit to anything in writing. Depending on your circumstances, you may qualify for resolution programs that protect your interests while negotiations are ongoing. Reach out today for a confidential consultation.