An IRS notice with a failure-to-file or failure-to-pay penalty can feel like a punishment for a year that already went wrong. A hospital stay, a house fire, or a parents death doesnt wait for April 15. Tax law allows for that. Every year, the IRS removes penalties for people who can show reasonable cause.
The catch is the letter. This guide gives you an IRS penalty abatement reasonable cause letter sample you can adapt. Youll also get four filled-in examples and the exact facts the IRS says it wants to see. A 2026 rule change may make the letter unnecessary for some 2025 returns, too.
What Counts as Reasonable Cause for the IRS
Reasonable cause means you used ordinary care and prudence, yet something beyond your control still stopped you from filing or paying on time. The IRS decides each case on its own facts. Theres no checklist that guarantees approval.
On its IRS reasonable cause relief page, the agency lists examples that may qualify for late filing or late payment:
- Fires, natural disasters, or civil disturbances
- Being unable to get your records
- Death, serious illness, or unavoidable absence of you or an immediate family member
- System issues that delayed a timely electronic filing or payment
For a business, the IRS looks at the person who had authority to file the return or make the deposit. If the bookkeeper got sick but the owner could have filed, the claim gets weaker.
Reasons the IRS usually rejects
Some explanations sound fair but rarely work alone. Leading with any of these is the fastest way to a denial letter.
| Reason | How the IRS treats it |
|---|---|
| “My preparer missed the deadline” | Youre still responsible. You should confirm what was filed and when. |
| “I didnt know I had to file” | Lack of knowledge isnt reasonable cause on its own. |
| “It was an honest mistake” | Mistakes and oversights generally dont qualify unless other facts show real effort to comply. |
| “I didnt have the money” | Lack of funds alone fails. It can help if other facts show you acted with care. |
Reasonable cause also doesnt apply to some penalties. The estimated tax penalty is the common one, and it has its own waiver rules.
Try First Time Abate Before You Write
Many people write a long hardship letter when they dont need one. First Time Abate (FTA) is an administrative waiver for taxpayers with a clean record. It covers failure-to-file, failure-to-pay, and failure-to-deposit penalties, regardless of the amount.
You generally qualify for FTA if both of these are true:
- You timely filed the same type of return for the prior three years (or 12 straight quarters for quarterly filers).
- No penalty was assessed in that period, other than an estimated tax penalty, or any penalty was later removed for reasonable cause or IRS error.
You dont have to name FTA or send documents. Call the number on your notice and ask for penalty relief. The IRS says that if you ask for reasonable cause by phone and you qualify for first time abate, it applies FTA instead.
- What changed: FTA is moving to Automatic Exemption from Penalty (AEP), starting summer 2026.
- Who it covers: 2025 tax year returns and 2026 quarterly returns onward, including Forms 1040, 1065, 1120, 940 and 941.
- How it works: With three prior years of timely compliance, the penalty is never assessed. You get a letter, and you dont need to respond.
- Older years: Penalties for 2024 and earlier still go through FTA or a reasonable cause request.
The IRS administrative penalty relief page has the full comparison. If you dont qualify for FTA or AEP, a reasonable cause letter is your next step.
Accuracy-related penalties work differently
An accuracy-related penalty applies when the IRS says you understated your tax. Reasonable cause and good faith can still remove it, but the IRS weighs other factors. It looks at your efforts to report the right tax, how complex the issue was, and your tax knowledge and experience.
Relying on an advisor can help here, unlike with late filing. The IRS considers two points: you gave the advisor all the needed information, and the advisor was competent in that area. Include the advisors engagement letter and your emails if this applies to you.
How to Request Reasonable Cause Penalty Relief
You have three ways to ask. Start with the cheapest one in time and paperwork.
Option 1: Call the number on your notice
The IRS can reduce or remove some penalties over the phone. Have the notice, the penalty you want removed, and your reasons ready. Keep your records nearby in case the agent asks for dates.
Option 2: Send a written statement
If phone relief isnt approved, or youd rather have a paper trail, mail a letter. This is where the sample below comes in. A clear letter with dated proof often does better than a long phone explanation.
Option 3: File Form 843
Form 843, Claim for Refund and Request for Abatement, is the formal version of the same request. Many tax pros attach a reasonable cause letter to Form 843 as the explanation. The official Form 843 instructions list where to mail it.
What to Put in a Reasonable Cause Letter
The IRS spells out what it wants to read. Your letter should explain:
- What happened and when. Give start and end dates, not “last year.”
- How it stopped you. Connect the event directly to the missed filing or payment.
- What you tried. Show the steps you took to comply, and how fast you acted once things improved.
Attach proof that matches your story. The IRS names hospital or court records, a doctors letter with dates, disaster documentation, copies of related letters, and receipts or forms.
Your timeline is the heart of the letter. If you were in the hospital from March 2 to April 28, then filed on May 10, that 12-day gap looks responsible. A nine-month gap after recovery needs its own explanation.
IRS Penalty Abatement Reasonable Cause Letter Sample
Copy this template and replace every bracketed item with your own facts. Keep it to one or two pages. Facts and dates persuade an IRS reviewer more than feelings do.
[Your full name]
[Street address]
[City, State ZIP]
[SSN or ITIN, or EIN for a business]
[Daytime phone number]
[Date]
Internal Revenue Service
[Address shown on your notice]
Re: Request for penalty abatement based on reasonable cause
Notice [number, e.g. CP14], dated [date]
Tax form [1040] for tax year [2024]
Penalty: [failure to file / failure to pay], $[amount]
Dear Sir or Madam:
I am requesting that the [penalty name] shown on the notice above be removed based on reasonable cause.
[What happened] On [date], [describe the event in two or three plain sentences].
[How it prevented compliance] Because of this, I was unable to [file my return / pay the tax due] by [due date]. [Explain the direct link, for example: my records were destroyed, or I was hospitalized and unable to manage my affairs.]
[What you did] As soon as [the situation improved / I recovered / I obtained my records] on [date], I [filed the return / paid the balance / set up a payment plan] on [date].
I have a history of filing and paying on time, and I exercised ordinary care and prudence. Enclosed are copies of [list documents]. Please remove the penalty and any related interest.
Sincerely,
[Signature]
[Printed name]
Enclosures: [Copy of IRS notice], [supporting documents]
Include a copy of the IRS notice so your letter gets matched to the right account. For a joint return, have both spouses sign.
Four Filled-In Reasonable Cause Examples
These short examples show how the middle paragraphs change by situation. Names and figures are illustrations, not real cases.
Example 1: Serious illness
“On February 20, 2025, I was admitted to [hospital] for emergency surgery and stayed through April 22, 2025. My doctor ordered six weeks of home recovery after discharge, and gathering records or filing was not possible during that time. On June 9, 2025, eight days after my doctor cleared me, I filed my 2024 Form 1040. Enclosed are my admission and discharge records and my doctors letter with dates.”
Example 2: Natural disaster
“A flood on March 14, 2025 damaged the ground floor of my home, where I kept my tax records. My insurance claim number is [number]. I requested replacement Forms W-2 and 1099 on March 30 and received the last one on May 21. My return was filed one week later, on May 28. Enclosed are the insurance claim letter, photos of the damage, and my requests for replacement records.”
Example 3: Death in the immediate family
“My mother passed away on April 2, 2025. As her only child, I handled her final arrangements and estate matters through May. On June 13, 2025, I paid the full balance due on my return. Enclosed is a copy of the death certificate and the funeral home invoice.”
Example 4: Business system failure
“Our payroll deposit for the quarter ending June 30, 2025 was scheduled on time through our payroll provider on July 10. The provider had a processing outage from July 10 to July 16, confirmed in its customer notice. We learned of the failure on July 17 and made the deposit that same day. Enclosed are the scheduled payment confirmation and the providers outage notice.”
Payroll cases are judged against the person with authority to make the deposit. Thats why the example shows the deposit was scheduled early and fixed within a day.
Notice the pattern. Each example names an event, gives dates, explains the impact, and shows quick action afterward.
- Vague dates: “Early in the year” gives the reviewer nothing to verify.
- Blaming the preparer: The IRS treats filing as your responsibility, even with a paid professional.
- No proof: A strong story without documents often gets denied.
- A long gap after the event: If you waited months after recovering, explain why or expect pushback.
How to Send Your Letter and Track It
Mail the letter to the address on your notice unless the notice says otherwise. Send it by certified mail with a return receipt, so you can prove the date it arrived.
Keep a full copy of everything you send. Write down the date, the tracking number, and the name of any IRS agent you speak with. Replies can take weeks or months.
If you cant pay the balance now, pay what you can and apply for a payment plan. The IRS says a payment plan may reduce future penalties while your request is reviewed.
What Happens to Interest and Denials
The IRS charges interest on penalties. When a penalty is reduced or removed, the IRS automatically reduces or removes the interest tied to it. Interest on the underlying tax usually stays.
If you get a denial letter, youre not out of options. The letter explains your appeal rights, and the IRS has a penalty appeal process for people who disagree. Follow the deadline in your denial letter closely.
Penalties often stack when someone hasnt filed for a few years. Our guide to the penalty for filing taxes late shows how failure-to-file and failure-to-pay penalties grow month by month. If youre behind on several years, see how to file back taxes yourself before you request relief.
When to Get Professional Help
A simple one-year penalty with clean proof is often a do-it-yourself job. Larger cases are different. Bring in a CPA, enrolled agent, or tax attorney when the penalty is big, spans several years, involves payroll deposits, or was already denied.
A professional can also request your IRS account transcripts to check FTA eligibility before you write a word. If your case is part of a bigger dispute, IRS audit representation explains what a representative can handle for you. Low-income taxpayers may qualify for free help from a Low Income Taxpayer Clinic, and the Taxpayer Advocate Service helps when normal channels fail.
Frequently Asked Questions
What is a good reasonable cause for penalty abatement?
Strong reasons are events outside your control with clear dates and proof. The IRS lists fires, natural disasters, serious illness, a death in the immediate family, being unable to get records, and system issues that blocked e-filing or payment.
How do I write a reasonable cause letter to the IRS?
State the penalty and notice number, then explain what happened and when. Show how the event stopped you from filing or paying, and what you did once it passed. Attach documents that prove the dates.
Can I request penalty abatement over the phone?
Yes. Call the toll-free number on your notice. The IRS can approve some requests on the call, and it applies First Time Abate automatically if you qualify. If phone relief fails, request it in writing or with Form 843.
Is lack of money a reasonable cause for not paying taxes?
Not on its own. The IRS may still grant relief if other facts show you used reasonable care, such as an illness that also cut off your income. Setting up a payment plan helps limit further penalties.
Does the IRS remove interest when it removes a penalty?
It removes the interest charged on that penalty automatically. Interest on the unpaid tax itself generally remains, because it compensates the government for the late payment.
What is the IRS Automatic Exemption from Penalty?
AEP starts in summer 2026 and replaces First Time Abate for 2025 tax year returns and later. Taxpayers with three prior years of timely compliance wont be assessed failure-to-file, failure-to-pay, or failure-to-deposit penalties at all.
The Bottom Line
Call the IRS first, since First Time Abate may remove the penalty without a letter. Starting with 2025 returns, AEP may stop the penalty before its ever charged. When neither applies, send a dated, factual reasonable cause letter with proof attached. Keep copies, track your mail, and ask a tax professional for help with large or repeat penalties.
This article is general information, not tax or legal advice. Rules can change, so confirm details with the IRS or a licensed tax professional before acting.