Can You Get IRS Interest Removed? The § 6404 Abatement Guide

The tax was bad enough. Then you saw the interest—sometimes rivaling the tax itself, especially if your case took years to resolve. So you went looking for relief and found articles about penalty abatement, reasonable cause, and first-time relief.

Here is the hard truth to absorb before anything else: none of that applies to interest. The IRS says it plainly on its own interest page: "We don't remove or reduce interest for reasonable cause or as first-time relief." Penalties can be excused when you had a good reason. Interest cannot—it is compensation for the use of money under IRC § 6601, not a punishment, so there is nothing to excuse.

But "no reasonable cause" does not mean "no relief ever." IRC § 6404 opens a handful of narrow, specific doors to abatement—the tax world's word for wiping out a charge the IRS has already put on your account—chiefly where the IRS itself made the error or caused the delay. And if the IRS denies your request, § 6404(h) lets the Tax Court review that denial. This guide walks through every door, the Form 843 request, and the path to court.

First, the Biggest Lever Is Indirect

Before you fight about interest directly, check whether you can shrink what the interest sits on. Interest is a percentage of the underlying tax and penalties—so if the tax or a penalty comes down, the IRS confirms on its interest page that "we'll automatically reduce the related interest." No separate interest request needed.

That makes two other guides the first stop for many readers. If the underlying tax is wrong, see How To Request Audit Reconsideration. If a penalty can be removed for reasonable cause or first-time abatement, see How To Request IRS Penalty Abatement—the interest that accrued on that penalty disappears with it.

Also check what you are actually looking at. IRS notices stack tax, penalties, and interest together, and the failure-to-pay penalty—which keeps growing month after month, just like interest—is easy to mistake for it. Understanding Your IRS Balance shows how to tell the charges apart on your notice and transcript. If part of the "interest" is really a penalty, the reasonable-cause and first-time routes reopen for that part.

As for the interest itself: it runs from your return's original due date, compounds daily, and does not stop while you are in Appeals or Tax Court. The mechanics—rates, compounding, the § 6603 deposit that can stop the clock—are covered in How Interest Works on Your IRS Tax Debt. This article is about the narrower question: when can accrued interest be removed?

The Doors § 6404 Actually Opens

Now each one in plain English.

Door 1: The Interest Is Simply Wrong—§ 6404(a)

Section 6404(a) authorizes the IRS to abate the unpaid portion of any assessment—including assessed interest—that is "excessive in amount," assessed after the limitations period expired, or "erroneously or illegally assessed."

This is the door for computational errors: interest started from the wrong date, calculated at the wrong rate, or not suspended when the law required it. The fix starts with checking the IRS's math against your account transcript—more on that below.

One boundary to know: under § 6404(b), you cannot file an abatement claim for the income, estate, or gift tax itself. The Form 843 instructions repeat the point. Abatement claims are for interest and penalties; disputes about the tax run through other channels.

Door 2: Unreasonable IRS Error or Delay—§ 6404(e)(1)

This is the main event—the ground most people mean by "interest abatement." Under § 6404(e)(1), the IRS may abate interest attributable to "unreasonable error or delay" by an IRS officer or employee "in performing a ministerial or managerial act."

Every word of that carries weight, and Treas. Reg. § 301.6404-2 defines the two key terms:

• A ministerial act is a "procedural or mechanical act that does not involve the exercise of judgment or discretion"—the paper-moving that happens after all the substantive decisions and reviews are done.
• A managerial act is an administrative act during the processing of your case involving "the temporary or permanent loss of records or the exercise of judgment or discretion relating to management of personnel."

Crucially, neither term includes deciding how the tax law applies to you. If the IRS took two years to work through a genuinely hard legal question, that time does not qualify—no matter how painful the interest. The regulation's own examples draw the line:

Three more limits, all from the statute and the IRS's interest-abatement page:

1. The clock only counts after first written contact. An error or delay qualifies only if it occurred after the IRS "has contacted the taxpayer in writing" about the deficiency or payment. The years before an audit letter ever arrived can never qualify.
2. You cannot have significantly contributed. The statute requires that "no significant aspect of such error or delay can be attributed to the taxpayer involved"—and the IRS extends that to your representative.
3. Only the interest from the error-or-delay window is abatable. Not the interest on the whole balance—just what accrued during the period the IRS's error or delay caused.

One scope rule that surprises people: § 6404(e)(1) applies only to taxes subject to deficiency procedures—income, estate, gift, generation-skipping transfer, and certain excise taxes. It does not cover employment taxes. The Form 843 instructions say so, and the Tax Court held exactly that in Woodral v. Commissioner, 112 T.C. 19 (1999): the IRS has no authority to abate interest on employment taxes under (e)(1), so refusing to do so cannot be an abuse of discretion. Door 1 stays open, though: Woodral itself was a § 6404(a) claim about employment-tax interest, and the court reviewed it—the computational door is not limited to deficiency-type taxes.

And remember the word "may." Even a qualifying claim is discretionary—the IRS is permitted to abate, never required.

Door 3: Interest on a Refund the IRS Sent by Mistake—§ 6404(e)(2)

If the IRS erroneously refunds money and later demands it back, § 6404(e)(2) says the IRS shall abate the interest on that erroneous refund for the period "until the date demand for repayment is made." Two exceptions: the abatement is off if you (or a related party) "in any way caused" the erroneous refund, or if the refund exceeds $50,000.

In short: an IRS mistake in your favor should not generate interest charges against you before the IRS even asks for the money back.

Door 4: The IRS Took More Than 36 Months To Tell You—§ 6404(g)

For individuals who filed a timely return, § 6404(g) suspends interest (and certain time-sensitive penalties) if the IRS fails to send a notice "specifically stating the taxpayer's liability and the basis for the liability" within 36 months of the later of your filing date or the return's unextended due date. The suspension runs from the end of that 36-month window until 21 days after the notice finally goes out.

There are exceptions—failure-to-file and failure-to-pay penalties, fraud, amounts shown on your own return, gross misstatements, reportable-transaction penalties, and criminal penalties keep accruing. The full walkthrough with a worked example lives in How Interest Works on Your IRS Tax Debt.

The suspension operates by law—you do not apply for it. But if your transcript shows interest for a period that should have been suspended, Publication 556 gives the fix: submit Form 843 with "Section 6404(g) Notification" written at the top, filed with the service center where you filed the return. Hold on to this door—it stars in a Tax Court case below.

Door 5: Disaster Relief—§ 7508A

When a federally declared disaster hits your area, § 7508A lets the IRS disregard a period of up to a year for deadlines and for interest and penalties—interest simply does not run for the disregarded period. Qualified taxpayers also get an automatic minimum relief window: 120 days for disasters declared after July 24, 2025, under the Filing Relief for Natural Disasters Act, Pub. L. 119-29.

This relief is normally automatic for taxpayers in the covered area—the IRS announces it by news release. The practical point for this guide: if you were in a declared disaster area and interest was charged for the relief period anyway, that is a computational error, and Form 843 is the fix-it tool.

The Door That Looks Like It Is for Interest but Is Not—§ 6404(f)

Section 6404(f) requires the IRS to abate "any portion of any penalty or addition to tax attributable to erroneous advice furnished to the taxpayer in writing" by the IRS—if you reasonably relied on it, the advice answered your specific written request, and you gave the IRS accurate information.

Read that again: penalties. Subsection (f) never mentions interest, and it is a common misreading to think written-advice relief reaches interest directly. What actually happens is the indirect route from the top of this article—when the penalty is abated, the interest that accrued on it goes too.

How To Ask: The Form 843 Walkthrough

The vehicle is Form 843, Claim for Refund and Request for Abatement (the IRS also accepts a signed letter, but the form makes sure you cover everything). For a § 6404(e)(1) claim, the instructions want:

• The right checkbox. The current (December 2024) form has reason checkboxes at the top—for IRS error or delay, check the box labeled "Abatement or refund of interest due to IRS error or delay under section 6404(e)(1)." Check exactly one.
• Lines 1 through 4, including on line 3 the dates of any payments of interest or tax for the period, and box a on line 7 ("Interest was assessed as a result of IRS errors or delays").
• Line 8, the heart of the claim, must state five things: the type of tax; when the IRS first notified you in writing about the deficiency or payment; the specific period for which you want interest abated; the circumstances of your case; and the reasons why you believe that failure to abate the interest "would result in grossly unfair treatment."

A few mechanics worth knowing:

• One error, one form. If a single IRS error or delay affected multiple tax years or types of tax, file only one Form 843 covering all of them.
• Where to file. If you are responding to an IRS notice, use the return address on the notice. Otherwise, send it to the service center where you would file a current-year return for that type of tax.
• Send it by certified mail and keep everything. A later Tax Court petition must state the date you mailed the claim and the office you mailed it to, with a copy of the claim attached (Rule 281(b))—so keep a full copy of the package and proof of mailing from day one.
• The refund window. If you already paid the interest and want it back, the refund statute applies: 3 years from when you filed the return or 2 years from when you paid, whichever is later. See Understanding IRS Statutes of Limitations. Unpaid interest is not under the same bar—but the balance keeps compounding while you wait, so waiting has a price.
• Joint returns need both signatures.

One neighboring tool deserves a mention so you do not miss it: if the IRS owed you a refund for one period while you owed it for an overlapping period, § 6621(d) sets a net interest rate of zero on the overlapping amounts. That is interest netting, not abatement—it also runs through Form 843, and the interest mechanics guide covers it.

What Happens After You File

Interest-abatement requests are worked by specialist Interest Abatement Coordinators under IRM 20.2.7. Some requests are "automatically disallowed by law" because no door exists—reasonable-cause interest requests, employment-tax interest, and tax years 1978 and earlier go straight to a final determination.

For everything else, expect a letter sequence:

1. An initial determination. If denied in full or in part, the letter (the IRM lists Letter 3010-C for full disallowance and 3022-C for partial) comes with appeal rights. If allowed in full, you get Letter 3023-C and you are done.
2. Appeals, if you want it. Publication 556 confirms you can appeal a denial to the IRS Independent Office of Appeals. The disallowance letter explains how to appeal and how long you have—read it carefully and do not miss that deadline. See How To Request an IRS Appeals Conference.
3. The final determination. If you do not appeal, or if Appeals also says no, the IRS issues a final determination letter by certified mail (registered mail for international addresses; the IRM lists Letters 3180-C and 3181-C).

That certified-mail final determination is not just a formality—its mailing date starts the Tax Court clock. And do not fixate on letter numbers: the IRS has used different ones in different contexts. What matters is the function: a certified-mail letter finally determining not to abate. As you will see below, the Tax Court has held that a letter can be a final determination even when the IRS says otherwise.

Interest continues to accrue during the request, during Appeals, and during any Tax Court case, and filing Form 843 does not pause IRS collection on your balance either. Nothing forces the IRS to decide by any particular date—but as the next section explains, 180 days of silence opens the Tax Court door on its own.

Taking a Denial to Tax Court: § 6404(h)

Congress gave the Tax Court jurisdiction to review interest-abatement denials. Under § 6404(h), the court determines "whether the Secretary's failure to abate interest under this section was an abuse of discretion, and may order an abatement." "Under this section" means all of § 6404, not just the error-or-delay ground: Woodral confirmed jurisdiction over § 6404(a) refusals, and Corbalis v. Commissioner, 142 T.C. 46 (2014) extended it to § 6404(g) suspension denials.

Who Can Petition: The Net-Worth Gate

Unusually, this case type has an eligibility test. Section 6404(h) borrows the requirements of § 7430(c)(4)(A)(ii), which in turn borrows the Equal Access to Justice Act limits in 28 U.S.C. § 2412(d)(2)(B):

• Individuals: net worth—everything you own minus everything you owe—of $2 million or less, measured when the petition is filed.
• Married couples who filed jointly: under § 7430(c)(4)(D), each spouse is treated as a separate individual—each gets their own $2 million test.
• Businesses: net worth of $7 million or less and no more than 500 employees.

Your petition must affirmatively state that you meet these requirements (Rule 281(b)(7)), and the IRS does actually contest the point—in Corbalis, the petitioners ended up supplementing the record with accountant-prepared net-worth statements.

The Two Timing Rules—Both Matter

Forget every Tax Court deadline you have read about for deficiency cases. This case type runs on its own clock, set by § 6404(h)(1), and it has two sides:

1. The hard stop. Once the IRS mails its final determination not to abate, you have 180 days from the mailing date to file your petition. The controlling date is the day the IRS mailed the letter, not the day you received it—§ 6404(h)(2)(A) borrows mailing rules similar to those for a notice of deficiency. Miss the deadline and the door closes.
2. The IRS cannot stall you forever. If 180 days pass after you filed your abatement claim and the IRS still has not issued a final determination, you may petition the Tax Court without waiting any longer. Rule 281(b)(5) has petition requirements written for exactly this no-answer posture.

So the final determination letter starts a countdown—but IRS silence, after 180 days, opens the courthouse door on its own.

The Standard: Abuse of Discretion, and the Burden Is Yours

This is not a deficiency case where the court refigures your tax. The court reviews the IRS's discretionary call, and the bar is high. In Woodral, the Tax Court stated the test: "In order to prevail, a taxpayer must prove that the Commissioner exercised this discretion arbitrarily, capriciously, or without sound basis in fact or law."

The burden of proof is on you under Tax Court Rule 142(a)—and note this is a different framework from the burden-shifting rules of § 7491 that govern deficiency cases. Those shifts do not help you here; the whole architecture is review of agency discretion, closer to what happens in a Collection Due Process appeal than a deficiency trial. For the contrast, see Burden of Proof in Tax Court.

Filing Mechanics

The petition is its own species: Rule 281 titles it a "Petition for Review of Failure To Abate Interest Under Code Section 6404" and requires, among other things: the date you mailed your abatement claim and the IRS office you mailed it to (with a copy of each claim attached); the years or periods involved; if a final determination issued, its date, a copy attached, and numbered statements of each error you say the IRS made with the supporting facts; if no determination issued, the Rule 281(b)(5) statements instead; what relief you want; and the net-worth eligibility statement.

The filing fee is $60, waivable if you cannot afford it (Rule 281(d)). You file a request for place of trial with the petition (Rule 282), and the IRS answers like any other case (Rule 283). General filing mechanics—DAWSON, service, what a petition looks like—are in How To File Your Tax Court Petition.

The small-case option exists here too. Under § 7463(f)(3), you can request small (S) case procedures for a § 6404(h) petition—with the Court's concurrence—where the total abatement you are seeking is $50,000 or less. Note the measure: it is the amount of abatement sought, not tax per year. On what the S election trades away, see Small Case or Regular Case: Which Should You Choose?.

Tax Court or Nowhere: Hinck

Wondering whether you could sue in district court instead? The Supreme Court answered in Hinck v. United States, 550 U.S. 501 (2007): "the Tax Court provides the exclusive forum for judicial review of a refusal to abate interest under § 6404(e)(1)." The Court read § 6404(h) as a "precisely drawn, detailed statute" that packages the forum, who may sue, the deadline, the review standard, and the remedy into a single sentence—leaving no room to bring the same claim as a refund suit elsewhere.

That makes the net-worth gate a real gate: for a discretionary (e)(1) denial, a taxpayer over the limits has no court to go to. (A purely computational dispute—the interest is mathematically wrong, rather than refused as a matter of discretion—is a different kind of claim with different routes, including the post-decision motion described next; Hinck is about (e)(1) denials.)

Just Finished a Tax Court Case? The § 7481(c) Motion

Here is a route many people miss. Your deficiency case itself generally does not decide interest—interest is assessed and collected like tax, but the deficiency procedures do not apply to it (IRC § 6601(e)(1)). So when the bill arrives after your Tax Court case ends and the interest looks wrong, you are not stuck.

Under IRC § 7481(c), once you have paid the entire deficiency plus the interest the IRS claims, you can file a motion—in your existing docket, not a new case—asking the Tax Court to redetermine the interest. The window is 1 year after the court's decision becomes final. Rule 261 lists what the motion must contain: your contentions about the correct amount with a computation schedule, the amounts and dates of your payments, whether you have discussed the dispute with the IRS, and copies of the decision and the assessment notice. The IRS must respond within 60 days, and motions are ordinarily decided without a hearing.

Realistic Expectations: Lee

Go in clear-eyed about what loses. In Lee v. Commissioner, 113 T.C. 145 (1999), a pro se petitioner sought abatement after a 1980 tax-shelter dispute took over a decade to resolve. The court sustained the denial: "The mere passage of time in the litigation phase of a tax dispute does not establish error or delay by the Commissioner in performing a ministerial act."

That is the pattern to internalize. Long delays alone—time in litigation, time in Appeals, time spent on genuine legal deliberation—do not win, because considering your case, even slowly, is the exercise of judgment rather than a ministerial or managerial act. What wins is a documented, specific failure: a file lost, a case left unassigned after a transfer was approved, a notice sitting in a drawer after every review was complete. You need to point at the act, the dates it should have happened and did happen, and the interest that accrued in between.

The IRS's Letter Is Not the Last Word: Corbalis

One more case, because it protects you from being talked out of your rights. In Corbalis, taxpayers sought § 6404(g) interest suspension. The IRS's denial letters told them flatly: "The judicial review provisions of IRC section 6404(h) do not apply to IRC section 6404(g). Therefore, you do not have appeal rights, nor may you petition the Tax Court for judicial review regarding this letter."

The Tax Court disagreed on both counts. It held that § 6404(h) review reaches § 6404(g) denials, and that the IRS's letters were final determinations that opened the courthouse—even though they claimed otherwise, and even though companion letters insisted "This is not the IRS's final determination." What counts as a final determination is substance, not label. (Corbalis was a jurisdictional ruling, not a merits win—the fight over the suspension itself continued. But the taxpayers stayed in court.)

Build the Record That Wins

Whether you are drafting the Form 843 or already eyeing the Tax Court, the work is the same: dates and documents.

See the interest first. Your account transcript—which you can pull yourself, free, through IRS.gov—shows the interest history (TC 196 is assessed interest and TC 197 its abatement; manually computed "restricted" interest posts as TC 340 and 341; see How To Read IRS Transcript Codes) and every assessment date. Understanding Your IRS Balance explains how the pieces fit. For the detailed interest computation itself, the IRS's PINEX transcript lays out the rates and periods—but it is practitioner-only, one more reason a Low Income Taxpayer Clinic is worth a call if you qualify.

Build the timeline from first written contact. Gather every IRS letter in date order, starting with the first written contact about the deficiency or payment—only time after that letter can qualify under (e)(1). Then mark the gaps: where did the file sit, and whose act was overdue?

Compute the ask. Your claim is not "abate my interest"—it is the interest that accrued from the date the qualifying error or delay began to the date it ended. Line 2 of Form 843 wants a dollar figure; your line 8 explanation should show the window that produces it.

Complain contemporaneously. If your exam or collection case is dragging right now, put your complaints in writing to the IRS as they happen—a dated paper trail of "this case has sat for eight months since the manager approved transfer" is exactly the evidence a future (e)(1) claim is built from. If the process itself has stalled and is causing you hardship, the Taxpayer Advocate Service can intervene—ask using Form 911.

What To Do Now

1. Check whether the real target is the tax or a penalty. If either is wrong, fight that first—the related interest falls automatically. See audit reconsideration and penalty abatement.
2. Pull your account transcript and identify exactly what interest was assessed, when, and on what.
3. Match your facts to a § 6404 door. Be honest with yourself: "the interest is huge and I had a good reason" fits no door. "The IRS lost my file for a year" fits (e)(1). "The math is wrong" fits (a). No door, no claim—and if that is where you land, shift your energy from abatement to resolution: payment plans and offers in compromise deal with the whole balance, interest included. See How To Resolve Your IRS Tax Debt.
4. File Form 843 with the line 8 elements complete—one form if one error spans several years. If you already paid the interest, confirm you are inside the refund window (3 years from filing or 2 years from payment, whichever is later).
5. If denied, read the disallowance letter's appeal instructions and follow them on time. Appeals is your best value stop—court review is deferential.
6. Calendar the Tax Court clock. 180 days from the certified-mail final determination, hard stop. And if the IRS has sat on your claim for 180 days with no final determination, you may petition without waiting.
7. If you petition, plead to the standard. Numbered, specific assignments of error tied to identified ministerial or managerial acts and dates—plus the net-worth statement Rule 281 requires.

Get Help

Interest-abatement claims reward exactly the skills a good representative brings: reading transcripts, reconstructing timelines, and framing an administrative record. If your income is at or below 250% of the poverty line (about $39,900 for a one-person household, plus $14,200 for each additional member) and your dispute is at or below $50,000, a Low Income Taxpayer Clinic may represent you free—and can pull the practitioner-only computation transcripts you cannot.

Resources

Statutes and regulations:

• IRC § 6404—Abatements
• IRC § 6601—Interest on underpayments
• IRC § 6621—Interest rates; § 6621(d) netting
• IRC § 7430—Net-worth requirements incorporated by § 6404(h)
• 28 U.S.C. § 2412—Equal Access to Justice Act limits
• IRC § 7463—Small case procedures; (f)(3) covers abatement actions
• IRC § 7481(c)—Post-decision motion to redetermine interest
• IRC § 7508A—Disaster-related postponements
• Treas. Reg. § 301.6404-2—Ministerial and managerial acts defined
• Filing Relief for Natural Disasters Act, Pub. L. 119-29

Tax Court rules:

• Rule 261—Proceeding to redetermine interest
• Rule 280—Actions for review of failure to abate interest
• Rule 281—Petition contents, fee, and waiver
• Rule 282—Request for place of trial
• Rule 283—Other pleadings

IRS forms and guidance:

• Form 843—Claim for Refund and Request for Abatement and Instructions
• IRS—Interest abatement and Interest
• Publication 556—Examination of Returns, Appeal Rights, and Claims for Refund
• IRM 20.2.7—Abatement and Suspension of Underpayment Interest
• Taxpayer Advocate Service—Why do I owe a penalty and interest and what can I do about it?

Cases cited:

• Hinck v. United States, 550 U.S. 501 (2007) (official bound volume PDF)—the Tax Court is the exclusive forum for review of § 6404(e)(1) denials
• Woodral v. Commissioner, 112 T.C. 19 (1999) (U.S. Tax Court, DAWSON)—the abuse-of-discretion standard; jurisdiction reaches all of § 6404; no (e)(1) abatement for employment-tax interest
• Lee v. Commissioner, 113 T.C. 145 (1999) (U.S. Tax Court, DAWSON)—the passage of time alone does not establish qualifying error or delay
• Corbalis v. Commissioner, 142 T.C. 46 (2014) (U.S. Tax Court, DAWSON)—§ 6404(h) review reaches § 6404(g) denials; a final determination is defined by substance, not the IRS's label

Companion articles on TaxCourtHelp:

• How Interest Works on Your IRS Tax Debt—rates, daily compounding, § 6603 deposits, netting
• How To Request IRS Penalty Abatement—the reasonable-cause and first-time routes that exist for penalties
• How To Request Audit Reconsideration—shrinking the tax the interest sits on
• How To Request an IRS Appeals Conference—the stop between denial and court
• Burden of Proof in Tax Court—how abuse-of-discretion review differs from the deficiency framework
• Collection Due Process Hearings: Your Right To Challenge IRS Liens and Levies—another abuse-of-discretion case type
• Understanding Your IRS Balance—what the numbers on your account mean
• How To Resolve Your IRS Tax Debt—payment plans and offers when no abatement door fits
• How To Get and Read Your IRS Transcripts and How To Read IRS Transcript Codes—verifying the interest
• Understanding IRS Statutes of Limitations—the refund window for paid interest
• How To File Your Tax Court Petition—DAWSON and filing mechanics
• Small Case or Regular Case: Which Should You Choose?—the S election
• How To Find and Use a Low Income Taxpayer Clinic—free representation if you qualify

This article is for informational purposes only and does not constitute legal or tax advice. For advice specific to your situation, consult a qualified tax professional or attorney.