Penalty abatement is the highest-return collection move in tax practice. Three paths exist: First-Time Abate (administrative waiver, replaced by the Automatic Exemption from Penalty for original returns due on or after January 1, 2027), reasonable cause defense (ordinary business care and prudence), and statutory exceptions. The 2026 procedural change is significant. In July 2026 the IRS announced the Automatic Exemption from Penalty (AEP), which applies relief automatically to qualifying taxpayers without a request and replaces First-Time Abate for original returns with due dates on or after January 1, 2027. Reasonable cause remains a fact-intensive defense governed by U.S. v. Boyle and a body of Tax Court case law. Most abatement requests are filed on Form 843 or by phone.
First-Time Abate (FTA). Administrative waiver under IRM 20.1.1.3.3.2.1. Three years of clean compliance history. Replaced by the automatic AEP for original returns due on or after January 1, 2027; until then FTA must be requested. An unreversed prior penalty (other than an estimated tax penalty) or a prior FTA or tolerance abatement in the three preceding years disqualifies (IRM 20.1.1.3.3.2.1).
Reasonable Cause. Established under IRC §6664(c) for accuracy penalties and Treas. Reg. §301.6651-1(c) for failure-to-file/pay. "Ordinary business care and prudence" standard. Fact-intensive.
Statutory Exceptions. Specific Code provisions that eliminate the penalty. Substantial authority, adequate disclosure, qualified amended returns under §6662, qualified extension rules under §6651(c).
In July 2026 the IRS announced the Automatic Exemption from Penalty (AEP) in Fact Sheet FS-2026-12. AEP is applied automatically during original return processing, with no application, form, or separate request, to taxpayers with three prior years of timely compliance (12 consecutive quarters for quarterly returns). For original returns with due dates of January 1, 2027, or later, FTA is no longer available and AEP replaces it. AEP covers certain failure to file, failure to pay, and failure to deposit penalties; it does not cover accuracy-related penalties, information return penalties, or daily delinquency penalties.
| What Changed | What Stayed the Same |
|---|---|
| AEP applied automatically in original return processing | Three prior years of timely compliance still required |
| No request needed for qualifying taxpayers | Accuracy, information return, and daily delinquency penalties are not covered |
| Covers certain FTF, FTP, and FTD penalties | Reasonable cause still must be requested |
| FTA ends for original returns due on or after January 1, 2027 | FTA must still be requested for transition returns |
| Penalty | Rate | Authority | FTA Eligible? | Reasonable Cause? |
|---|---|---|---|---|
| Failure to file | 5% per month, max 25% | §6651(a)(1) | Yes | Yes |
| Minimum FTF if >60 days late | Lesser of $525 or 100% tax (returns due in 2026; $535 for returns due in 2027) | §6651(a)(1) flush | Yes | Yes |
| Failure to pay | 0.5% per month, max 25% | §6651(a)(2) | Yes | Yes |
| FTP after Notice of Intent to Levy | 1% per month | §6651(d) | No | Yes |
| FTP with installment agreement | 0.25% per month (individuals who filed timely) | §6651(h) | No | Yes |
| Failure to deposit | 2% to 15% based on lateness | §6656 | Yes | Yes |
| Accuracy-related (negligence) | 20% of underpayment | §6662(b)(1) | No | §6664(c) |
| Substantial understatement | 20% of underpayment | §6662(b)(2) | No | §6664(c) |
| Substantial valuation misstatement | 20% or 40% (gross) | §6662(e), (h) | No | §6664(c) |
| Foreign financial asset understatement | 40% | §6662(j) | No | §6664(c) |
| Civil fraud | 75% | §6663 | No | No (must defeat fraud) |
| Estimated tax underpayment | Variable (interest rate based) | §6654 | No | Limited (§6654(e)) |
| Information return failure | $60 to $340 per return (same for returns due in 2026 and 2027); intentional disregard: greater of $680 (2026) or $690 (2027) or 10% of the amount required to be reported | §6721 / §6722 | Limited | §6724(a) |
| Form 5471/5472 late filing | $10,000 per form | §6038, §6038A | No | §6038(c)(4)(B) |
| FBAR (FinCEN 114) late | $10,000 statutory non-willful ($16,536 inflation-adjusted), willful up to the greater of $165,353 (adjusted) or 50% of the balance | 31 USC 5321(a)(5) | No | Title 31 reasonable cause |
| Form 3520/3520-A late | 5%/month to 25% or $10,000+ | §6677 | No | §6677(d) |
FTA is an administrative waiver, not a statutory provision. It is governed by IRM 20.1.1.3.3.2.1 and applies to failure-to-file (§6651(a)(1)), failure-to-pay (§6651(a)(2)), and failure-to-deposit (§6656) penalties only. Eligibility:
| Requirement | Detail |
|---|---|
| Clean prior 3 years | No same-type penalties assessed (with minor exceptions) in the three years preceding the year for which abatement is sought |
| All returns filed | Or valid extensions in place for any returns due within the lookback period |
| Current liability resolved | Tax fully paid, or installment agreement in place, or otherwise arranged |
| Penalty type covered | FTF, FTP, or FTD only - not accuracy, fraud, estimated tax, or information return penalties |
| Once per lookback period | A prior FTA abatement, or any unreversed penalty (other than estimated tax), on the same return type in the three preceding years disqualifies the later year |
For business filers with FTD penalties, an additional rule applies: a total of four or more FTD penalty waiver codes must not be present in the prior three years (per IRM 20.1.1.3.3.2.1). FTD is also not abated for EFTPS-avoidance penalties.
If multiple years have penalty assessments, FTA can be applied to only one. Reserve it for the largest. If a Client has $1,500 FTF for 2022 and $4,000 FTF for 2024, request reasonable cause first for 2022 (if facts support), then use FTA on 2024. Don't waste the FTA on the smaller penalty.
The Supreme Court in United States v. Boyle, 469 U.S. 241 (1985), established the foundational standard. Reasonable cause requires the taxpayer to show "ordinary business care and prudence." The Boyle court held that reliance on an agent to file a return is NOT reasonable cause for the failure-to-file penalty - filing is a non-delegable duty. However, reliance on professional advice on questions of law CAN constitute reasonable cause if three conditions are met:
| Neonatology Three-Part Test (applied with Boyle and Reg §1.6664-4) |
|---|
| 1. The advisor was a competent professional with sufficient expertise to justify reliance |
| 2. The taxpayer provided necessary and accurate information to the advisor |
| 3. The taxpayer actually relied on the advisor's judgment in good faith |
| Category | What Qualifies | Documentation |
|---|---|---|
| Death | Death of taxpayer, spouse, or immediate family member during the relevant filing period | Death certificate, obituary, hospital records |
| Serious illness | Illness or incapacitation of taxpayer or person who was responsible for filing | Doctor's letter with diagnosis dates, hospital records |
| Unavoidable absence | Military deployment, incarceration, hospitalization | Orders, court records, hospital admission/discharge |
| Natural disaster | Fire, flood, hurricane, earthquake destroying records | FEMA declaration, insurance claims, photographs |
| Inability to obtain records | Records held by third party who refused or delayed | Correspondence with third party, FOIA-type requests |
| Reliance on professional | Substantive position taken on professional advice meeting Boyle test | Engagement letter, written advice, communication record |
| IRS error | Erroneous oral or written advice from IRS | IRS call recording reference, written notice |
| Mistake of law | Limited - generally fails unless extremely complex | Documentation of research, advisor consultation |
The failure-to-pay penalty has a higher reasonable cause bar than failure-to-file. The taxpayer must show that paying on time would have caused undue hardship - not just inconvenience. Treas. Reg. §301.6651-1(c) and Boyle. Undue hardship means the taxpayer would have suffered substantial financial loss (e.g., loss of property due to forced sale at distressed price). Lack of funds alone is generally not reasonable cause - the taxpayer was expected to plan for the liability.
Reasonable cause for failure-to-pay is presumed during an extension period under Treas. Reg. §301.6651-1(c)(3) (individuals) and (c)(4) (corporations) if:
This is an automatic computational waiver - IRS computers apply it without taxpayer request when the criteria are met. If the 90% test fails, the FTP penalty runs from the original due date.
The §6662 accuracy penalty (20%) and §6662(h) gross valuation penalty (40%) have their own reasonable cause defense under IRC §6664(c). The standard is "reasonable cause" AND the taxpayer "acted in good faith." Treas. Reg. §1.6664-4 expands the analysis.
| Defense | Authority | Application |
|---|---|---|
| Substantial authority | §6662(d)(2)(B)(i) | Substantial authority for the position taken - higher than "reasonable basis" |
| Adequate disclosure with reasonable basis | §6662(d)(2)(B)(ii) | Disclose on Form 8275 / 8275-R; position must have reasonable basis |
| Qualified amended return | Treas. Reg. §1.6664-2(c)(3) | Pre-audit amended return that increases tax may escape §6662 |
| Reliance on tax professional | §6664(c), Reg §1.6664-4 | Three-part Boyle test plus good faith |
| Reasonable cause + good faith | §6664(c)(1) | General defense - facts and circumstances |
For simple FTA cases, phone is fastest. Call the number on the IRS notice. Have the notice in hand, plus the prior three years of filings ready for verification. A representative will check the system for clean compliance and apply the abatement in real time. Most calls resolve under 20 minutes. Get a confirmation number or representative ID.
For reasonable cause cases or where the IRS denied a phone request, file Form 843, Claim for Refund and Request for Abatement. Required content:
| Element | Detail |
|---|---|
| Tax period | The year and quarter the penalty was assessed against |
| Penalty type | Cite the specific IRC section (e.g., "§6651(a)(1) failure to file penalty") |
| Amount | Dollar amount of penalty to be abated, plus any related interest |
| Grounds | FTA, reasonable cause, statutory exception, or IRS error |
| Narrative | Detailed explanation of facts. Cite Boyle and Reg §1.6664-4 if reliance on professional |
| Documentation | Death certificate, medical records, FEMA declaration, advisor engagement letter |
| Signature | Taxpayer or authorized representative (Form 2848 POA attached) |
A signed written statement attached to a return or sent in response to a notice can also request abatement. Form 843 is preferred but not always required - the IRS Penalty Handbook (IRM 20.1.1) accepts written requests. If responding to a CP14 or similar balance-due notice, a written response with the reasonable cause statement often suffices.
Interest is not a penalty. Under IRC §6601, interest runs on unpaid tax and unpaid penalties from the original due date. It is generally NOT abatable. Two narrow exceptions:
| Interest Abatement | Authority | Condition |
|---|---|---|
| Interest on penalty that was abated | Automatic | If the penalty is abated, related interest is automatically abated |
| Interest due to IRS error or delay | §6404(e) | Unreasonable error or delay by IRS officer or employee in performing ministerial or managerial act |
| Interest on erroneous refund of $50,000 or less | §6404(e)(2) | Erroneous refund the IRS later demands back |
| Combat zone, disaster area | §7508, §7508A | Suspension during the qualifying period |
Interest abatement requests use Form 843. The "ministerial or managerial act" standard under §6404(e) is narrow - examples include IRS losing the return, IRS misrouting correspondence, IRS sitting on a case after exam ended.
If the IRS denies abatement, the taxpayer can request appeals consideration. For accuracy-related and information return penalties, request appeals within 30 days of the denial notice using a written protest (formal protest if >$25,000, small case if at or below). For FTA denials, request reasonable cause review as an alternative ground.
After Appeals consideration, the remaining option for most assessed penalties (including a §6651 addition not attributable to a deficiency) is pay-and-sue: pay the penalty in full, file a claim for refund (Form 843), and after the IRS denies the claim, file suit in U.S. District Court or Court of Federal Claims under §7422. The suit must be filed within 2 years of the mailing of the notice of claim disallowance (§6532(a)(1)).
Structure as: Facts (chronological), Issue (penalty type and amount), Standard (Boyle, Reg cite), Argument (apply standard to facts), Conclusion (specific relief requested). Attach documentation matched to each factual assertion. The IRS examiner reads many requests - clarity wins.
If you call requesting reasonable cause and the IRS confirms FTA eligibility, the rep will apply FTA instead. This preserves the reasonable cause argument for a future use - but uses up the FTA. The recommended approach: open with FTA if eligible, save reasonable cause for cases where FTA doesn't apply. For original returns due on or after January 1, 2027, AEP replaces FTA, so a penalty outside AEP's scope needs reasonable cause.
When both FTF and FTP apply for the same month, FTF is reduced by FTP per §6651(c)(1) - so the combined rate is 5% per month, not 5.5%. After 5 months, FTF maxes out at 22.5% (25% - 2.5% reduction) and only FTP continues until reaching its 25% max. Total maximum is 47.5% (22.5% + 25%) if both apply for full term. Don't double-count when computing the abatement claim.
An approved installment agreement under §6159 reduces the FTP rate from 0.5% to 0.25% per month for an individual who filed the return on time - prospectively only. Combined with FTA or reasonable cause abatement of prior FTP, this can dramatically reduce total cost. Set up the IA first, then request abatement of accrued penalty.
For reliance defenses, the engagement letter is critical evidence. It should describe scope, advisor credentials, and the specific issue. Pure verbal advice without contemporaneous documentation is harder to prove. When advising a Client on a complex position, write a brief memo summarizing the position and reasoning - it becomes the §6664 defense if the position is later challenged.
Filing an amended return BEFORE the IRS contacts the taxpayer about the issue can defeat §6662 accuracy penalties under Treas. Reg. §1.6664-2(c)(3). The amendment must be filed before any of: (1) IRS contacts taxpayer about exam; (2) Promoter is contacted about the transaction; (3) John Doe summons issued. Pro-active correction protects the penalty defense.
Routinely rejected. The Tax Court repeatedly holds that inability to pay due to general financial difficulty is not reasonable cause - the taxpayer was expected to plan for the liability. Specific undue hardship circumstances (forced sale of business assets, eviction) are different.
Before requesting FTA, pull the wage and income transcript and the account transcript for the three prior years. If there's a small penalty buried in any of them, FTA is denied. Better to discover the disqualifier before filing than after the IRS response.
FTA covers FTF, FTP, and FTD only. Don't request FTA on §6662 accuracy penalty, §6663 fraud, §6654 estimated tax, or information return penalties under §6721-6722. Those need §6664(c) reasonable cause, §6724(a) reasonable cause for info returns, or other specific defenses.
§6721 and §6722 penalties for failure to file/furnish information returns (1099, W-2, 1098) are abatable under §6724(a) for "reasonable cause and not willful neglect." This is a separate defense from §6664(c). Filers with broken accounting systems or new payroll service have qualifying facts.
§6404(e) interest abatement is generally limited to interest accruing AFTER the IRS officer's error - not interest from the original due date. The interest abatement window is also subject to the §6511 refund SOL.
§6654(e) provides limited reasonable cause exceptions to the estimated tax penalty: casualty, disaster, other unusual circumstance; retirement after age 62 in the year of underpayment; disability. Most of these require Form 2210 with Box A or B checked plus a written statement. The reasonable cause bar is higher than for §6651 penalties - "good cause" plus specific qualifying facts.
Primary authority: IRC §6651 (failure to file/pay), Treas. Reg. §301.6651-1(c)(3)-(4) (extension safe harbor), §6651(h) (installment agreement rate), §6656 (failure to deposit), §6662 (accuracy-related penalty), §6662A (reportable transactions), §6663 (civil fraud), §6664(c) (reasonable cause defense to accuracy penalties), §6664(d) (reportable transaction defense), §6654 (estimated tax), §6654(e) (estimated tax exceptions), §6404(e) (interest abatement for IRS error), §6601 (interest on underpayments), §6724(a) (information return reasonable cause), §7422 (refund suit), §7508 (combat zone), §7508A (disaster). United States v. Boyle, 469 U.S. 241 (1985). Treas. Reg. §301.6651-1(c) and §1.6664-4 (reasonable cause). IRM 20.1.1 Penalty Handbook, IRM 20.1.1.3.3.2.1 (FTA), IRM 20.1.2 (Failure to File/Pay procedures). IRS Form 843, Form 2210, Form 8275 / 8275-R. IRS Fact Sheet FS-2026-12 (July 2026) on the Automatic Exemption from Penalty (AEP).