IRS Form 843: How to Request Penalty Abatement in Writing

IRS Form 843 (Claim for Refund and Request for Abatement) is the form to file when you are asking the IRS to remove tax penalties, remove interest attributable to IRS delay, or refund certain taxes. It is the correct vehicle for reasonable-cause penalty abatement requests. Filing it wrong — with the wrong argument, wrong supporting documents, or the wrong tax year — is the most common reason abatement requests are denied.

What Form 843 can and cannot do

Use Form 843 to request:

• Penalty abatement (failure-to-file, failure-to-pay, failure-to-deposit, accuracy-related, estimated tax) under reasonable cause or statutory exception
• Interest abatement where IRS unreasonable error or delay caused the interest
• Refund of tax withheld or excess Social Security tax
• Refund of taxes assessed and paid after the statute of limitations

Do not use Form 843 for:

• First-Time Abatement (FTA) — request that by phone (fastest) or letter to the IRS; Form 843 is not required
• Refunds of income tax paid — use Form 1040-X (Amended Return) instead
• Refunds of employment tax — use Form 941-X (or 943-X, 944-X) instead

How to argue reasonable cause on Form 843

Reasonable cause means the taxpayer exercised ordinary business care and prudence but was still unable to comply. The IRS Internal Revenue Manual (IRM 20.1.1) lists accepted grounds. The best-supported grounds are:

1. Serious illness, incapacitation, or death in the immediate family — provide medical records or death certificate covering the period of noncompliance
2. Natural disaster, casualty, or theft — provide FEMA declarations, police reports, or insurance claim documentation
3. Unavoidable absence — military service, extended hospitalization, incarceration; provide records
4. Inability to obtain records — records destroyed or held by a third party who refused to release them; provide correspondence
5. Reliance on erroneous professional advice — a written opinion from a CPA, attorney, or Enrolled Agent that turned out to be wrong; provide the written opinion and evidence of good-faith reliance

Reasonable cause arguments that fail without additional support:

• “I didn’t know I had to file” — ignorance of the law is generally not reasonable cause absent complicating factors
• “I was too busy” — the IRS does not accept ordinary business demands as reasonable cause
• “I couldn’t afford to pay” — financial hardship alone does not excuse failure to file; can excuse failure to pay in narrow circumstances with documentation

What to attach to Form 843

The form itself is one page. The strength of the request lies in the attached documentation:

1. A written statement of facts — chronological, dated, specific. Not “I was sick” but “I was hospitalized on [date] for [condition], remained in inpatient care through [date], and was unable to obtain my records until [date].”
2. Supporting evidence — medical records, death certificates, disaster declarations, correspondence with third parties, prior professional opinions
3. An IRS account transcript — confirms the exact penalties, dates, and amounts you are asking to be abated
4. If arguing First-Time Abatement fallback — a statement that if reasonable cause is denied, the IRS should consider FTA for any tax year with a three-year clean compliance history

Timing and where to file

Form 843 must generally be filed within:

• Three years of the return due date, or
• Two years of the date the tax was paid, whichever is later

For refund of penalties already paid, the two-year rule from the date of payment usually controls. Interest abatement requests have separate limitation periods under IRC §6404.

File Form 843 with the IRS Service Center where you originally filed the return the penalty relates to. The current addresses are in the Form 843 instructions.

What happens after you file Form 843

The IRS typically responds within 60–90 days for straightforward reasonable-cause requests. Complex arguments involving multiple years, business returns, or interest abatement can take six months or longer. During review, the IRS may:

• Request additional documentation — respond within the deadline given, usually 30 days
• Fully approve — you receive a written determination and the penalty is removed from your account
• Partially approve — some penalties removed, others sustained
• Deny — you have 30 days to request appeal to the IRS Office of Appeals

Denied Form 843 requests can be appealed. Do not accept a denial without at least a written protest — Appeals settles a significant portion of denied abatement requests when the reasonable-cause argument is properly framed.

When Form 843 is the wrong choice

Consider First-Time Abatement (FTA) first if you qualify: three-year clean compliance history, all currently required returns filed, no penalties assessed in the prior three years. FTA is granted by phone in most cases without any written request. Use Form 843 only when FTA doesn’t apply, when reasonable cause is stronger than FTA (because FTA is one-time only), or when combining with an interest abatement request.

Luisa N. Victoria, EA, files Form 843 penalty abatement requests for taxpayers in all 50 U.S. states — including complex reasonable-cause arguments for multi-year balances. Book a free penalty abatement strategy session to review your account and identify every penalty that can be removed.