A client of mine once got an IRS notice for $1,840 in penalties on a return she filed eleven days late, the same year her father died and she flew to Ohio for three weeks to handle the estate. She almost paid it without asking a single question, because the letter looked official and final in the way IRS letters do. It wasn’t final. Two phone calls later, the whole balance was gone.
That gap, between what an IRS notice implies and what’s actually negotiable, is where penalty abatement lives. Most people never ask, and the IRS doesn’t exactly advertise the option on the front of the letter. There are two main doors into penalty relief: first-time abatement, which is close to automatic if you qualify, and reasonable cause, which requires you to explain yourself. Here’s how each one actually works, including a change that took effect this year and changes what “asking” even means.
What IRS Penalty Abatement Actually Removes (And What It Doesn’t)
Penalty abatement only touches penalties. It does not erase the tax you owe, and in most cases it doesn’t touch the interest that built up on the underlying balance. If you owed $6,000 in tax and got hit with a $900 failure-to-file penalty, a successful abatement removes the $900. You still owe the $6,000, plus whatever interest accrued on that amount.
Three penalties make up almost every abatement request:
The failure-to-file penalty applies when you don’t file your return by the due date, including extensions. It runs 5% of the unpaid tax for each month or partial month the return is late, capped at 25%. If the return comes in more than 60 days late, there’s also a flat minimum penalty, currently $510 for 2025 returns and $525 for returns due after the end of 2025, or 100% of the unpaid tax if that’s smaller.
The failure-to-pay penalty applies when you file on time but don’t pay what you owe. It’s gentler on paper, 0.5% per month, also capped at 25%, though it climbs to 1% a month if the IRS sends a notice of intent to levy and ten days pass without payment, and drops to 0.25% a month once you’re in an approved installment agreement.
The failure-to-deposit penalty is the business-side version, for employers who miss payroll tax deposits, and it scales depending on how late the deposit is.
Accuracy-related penalties and estimated tax penalties are a different animal. They can sometimes be challenged, but not through the same first-time abatement path described below.
First-Time Penalty Abatement: The Easiest Way to Get a Penalty Removed
First-time abatement, usually shortened to FTA, is an administrative policy the IRS has run since 2001. It doesn’t require you to prove anything happened to you. It only requires that your recent record is clean.
To qualify, you need to meet three conditions. First, you haven’t had a failure-to-file, failure-to-pay, or failure-to-deposit penalty in the three tax years before the one you’re asking about. An estimated tax penalty in that window doesn’t disqualify you, and if a prior penalty was already abated for some other reason, that doesn’t count against you either. Second, you’ve filed every return currently required of you, or you’ve filed valid extensions. One missing prior-year return is enough to knock you out of eligibility. Third, you’ve either paid the tax you owe or you’re in a current installment agreement and keeping up with it. You don’t have to have the balance paid in full to qualify, though interest keeps running on whatever’s still outstanding.
FTA applies to individual returns (the 1040 series), business income tax returns (1065 and the 1120 series), and payroll tax returns (940, 941, 944, 945). It doesn’t apply to estate or gift tax returns, information returns like W-2s and 1099s, or Form 990 filings. There’s no dollar cap on how much can be abated this way, and married couples filing jointly both need a clean three-year history, since a disqualifying penalty on either spouse’s side can sink the joint request.
Starting in 2026, the IRS Applies First-Time Abatement Automatically
For nearly twenty-five years, getting FTA meant calling the IRS or writing a letter and asking for it by name. Most eligible taxpayers never did. One frequently cited Taxpayer Advocate estimate put the number of taxpayers who qualified for FTA in a typical year at around 4.5 million, with only about 200,000 actually receiving it, largely because nobody knew to ask.
That changed for the 2026 filing season. Beginning with tax year 2025 returns, the IRS started applying FTA automatically when the eligibility criteria are met, no phone call, no letter, no Form 843. If an eligible failure-to-file, failure-to-pay, or failure-to-deposit penalty gets assessed and you meet the clean-history and filing-compliance rules, the IRS is supposed to reverse it on its own.
A few things are worth knowing about how this actually plays out. The automatic process only covers 2025 and later returns, so a penalty tied to your 2023 or 2024 filing still needs a manual request if you want it abated. If you check your account and see a penalty that looks eligible for automatic relief but hasn’t been removed, you can still request it the old way. And during a phone call, if you ask for reasonable cause relief but the IRS agent sees you actually qualify for FTA instead, they’re supposed to apply FTA rather than making you build a reasonable cause case you didn’t need.
The practical upshot: for a growing share of taxpayers, this is now less of a “how do I ask” question and more of a “did the IRS actually catch it” question. Checking your IRS online account after receiving a penalty notice is worth the ten minutes.
What Happens If You Don’t Qualify for First-Time Abatement
FTA only works once every few years by design, since the whole point is a clean three-year window. If you had a penalty two years ago, or you’re missing a prior return, or the penalty type isn’t covered, FTA is off the table. That’s where reasonable cause takes over.
Reasonable cause isn’t a checklist. It’s a standard: did you exercise ordinary business care and prudence, and were you nevertheless unable to meet your tax obligations on time. The IRS looks at the specific facts of your situation rather than matching you against a rigid list, though there is a well-established set of circumstances that tend to succeed.
The Reasons the IRS Actually Accepts as Reasonable Cause
Death, serious illness, or the unavoidable absence of the taxpayer or an immediate family member shows up constantly in successful requests, and it’s exactly what happened with my client above. Fire, natural disaster, or another disturbance that disrupted your ability to file or pay also qualifies, as does the genuine inability to obtain records you needed, say your accountant’s office flooded and your prior-year documents were destroyed.
Reliance on written advice from the IRS that turned out to be wrong is another accepted reason, and oral advice can work too, though it’s harder to prove without something in writing. Beyond those specific categories, the IRS will consider “any other reason that establishes you used ordinary business care and prudence” but still couldn’t comply. That’s deliberately broad, and it’s also why reasonable cause requests succeed or fail based almost entirely on how well you document what happened.
One category trips people up constantly: lack of funds. Simply not having the money to pay is not, by itself, reasonable cause. But if the reason you didn’t have the money meets the standard, a client stopped paying you and you had no way to anticipate it, a bank froze your account due to fraud, you can sometimes build a reasonable cause case around the underlying cause rather than the shortage of cash itself.
The IRS also looks at what you did once the circumstance passed. If you were hospitalized for six weeks and then waited another four months to file once you were home and functional, that gap works against you. Filing or paying promptly once you’re able to again is part of showing ordinary care, not just an afterthought.
How Much These Penalties Actually Cost (So You Know What’s at Stake)
It’s worth seeing the real numbers before deciding whether a request is worth your time. Say you owed $10,000 and filed four months late without an extension, and you still haven’t paid. The failure-to-file penalty runs 5% a month, but when both failure-to-file and failure-to-pay apply in the same month, the failure-to-file portion drops to 4.5% so the combined rate lands at 5% a month rather than 5.5%. Over four months that’s 20% of $10,000, or $2,000, split between the two penalties, plus interest on the unpaid balance the whole time.
Left unresolved, the failure-to-file penalty maxes out after five months at 22.5% (since the combined rate absorbs 0.5% into the failure-to-pay side), while the failure-to-pay penalty keeps grinding away at 0.5% a month for up to 45 more months, adding another 22.5% on top. The absolute ceiling, when both penalties run their full course, is 47.5% of the unpaid tax. On a $10,000 balance, that’s up to $4,750 in penalties alone, not counting interest, which is set quarterly at the federal short-term rate plus 3% and compounds daily.
Numbers like that make the ten minutes it takes to check FTA eligibility, or the hour it takes to write a reasonable cause letter, look like a pretty good use of time.
How to Actually Request Penalty Abatement
For FTA on returns not covered by the automatic process, the fastest route is usually a phone call to the number printed on your penalty notice. Many practitioners still recommend following up in writing even after a successful call, just to have a paper trail showing the abatement was granted and why.
For reasonable cause, you generally have two paths. If the penalty hasn’t been paid yet, you can respond directly to the IRS notice with a written explanation, ideally attached to or referencing the specific notice number. If you’ve already paid the penalty and want it refunded, you’ll use Form 843, Claim for Refund and Request for Abatement, which covers requests for refunds or abatement of certain taxes, penalties, interest, and fees.
Whichever route you take, the explanation should be specific rather than general. “I was going through a hard time” doesn’t move the needle. “My father passed away on March 3rd, I was the executor of his estate, and I was in Ohio handling funeral arrangements and probate filings from March 5th through March 26th, which is why my return, due March 15th, was filed on March 26th” gives the IRS something concrete to evaluate, and ideally you’d attach documentation, an obituary, a death certificate, hospital records, insurance claims, whatever supports the specific dates involved.
Refund claims on Form 843 are also subject to a statute of limitations, generally the later of three years from when you filed the return or two years from when you paid the tax. Miss that window and even a legitimate reasonable cause argument won’t get you a refund on a penalty you already paid.
What Happens to the Interest Once a Penalty Is Abated
This is the part people are most often surprised by. When the IRS abates a penalty, it typically removes the interest that accrued specifically on that penalty amount, but it does not remove interest that accrued on the underlying unpaid tax itself. If your $10,000 tax bill generated $2,000 in penalties and $400 in interest on those penalties, a successful abatement wipes out the $2,000 and the $400. But if interest also built up on the original $10,000 while it sat unpaid, that interest survives the abatement and you still owe it.
There’s a narrower path to abating interest on the tax itself, generally limited to cases involving an unreasonable IRS error or delay, and it’s a much higher bar than penalty abatement. For most people going through this process, the realistic goal is getting the penalty and its associated interest removed, not the interest on the tax balance.
A Realistic Example: Combining First-Time Abatement and Reasonable Cause
Here’s how these two tools actually interact in practice. Imagine a freelance graphic designer who filed her 2024 return three months late because she was recovering from surgery that kept her away from her desk for most of that stretch. She gets hit with combined failure-to-file and failure-to-pay penalties totaling around $900 on a $6,000 balance.
She checks her prior three years and finds she had a failure-to-pay penalty on her 2022 return after a slow month left her short on estimated payments. That disqualifies her from first-time abatement for the 2024 penalty. So she writes a reasonable cause letter instead, explaining the surgery, the recovery timeline, and the exact dates she was physically unable to work, with a letter from her surgeon confirming the dates. The IRS grants the abatement, removing the $900 penalty along with the interest that had accrued on it. She still owes the original $6,000 in tax, plus whatever interest built up on that balance during the delay, since none of that gets touched by the reasonable cause finding.
Now imagine the same designer two years later, in 2026, filing a little late again for an unrelated reason. This time her three-year lookback is clean, since the 2022 penalty is now outside the window and the 2024 penalty was abated rather than left standing. If she meets the other FTA conditions, the IRS should apply first-time abatement automatically under the new process, without her having to write anything at all.
Mistakes That Sink an Otherwise Good Penalty Abatement Request
The most common mistake is treating the letter or phone call as a formality instead of an actual argument. A vague explanation gets a vague response, usually a denial. The IRS agent reviewing your request has no context beyond what you give them, so specificity does most of the work.
The second mistake is applying for reasonable cause when you actually qualify for FTA, or vice versa, without checking first. If your three-year history is clean, ask for FTA by name. It’s faster and doesn’t require proving anything happened to you.
The third is ignoring the clock. Reasonable cause requests and Form 843 refund claims both have deadlines, and waiting too long to respond to a notice can also mean the penalty gets referred to collections before your request is even reviewed.
The last one is assuming a single denial is the end of the road. If a reasonable cause request gets denied, you can generally appeal, and adding documentation that wasn’t in your original letter, a death certificate you didn’t include the first time, medical records that arrived after your first attempt, sometimes changes the outcome on a second look.
None of this is legal or tax advice specific to your situation, and if the amount involved is significant or your case is complicated, it’s worth talking to a CPA or tax attorney who can look at your actual notices and account transcript. But for a lot of ordinary late filings, a clean explanation, the right form, and knowing which door to knock on first is enough to make a penalty disappear.
