If you didn’t file taxes last year, the fix is simple in principle: prepare that return and send it in now. If the IRS owes you a refund, there’s no penalty for being late, but you only have three years from the original due date to claim the money before it’s gone for good. If you owe, filing stops the failure-to-file penalty from growing any larger, and most first-time late filers qualify for programs that wipe the penalties out entirely.
What you shouldn’t do is wait for the IRS to contact you first. Voluntary late filers get treated meaningfully better than people the agency has to chase.
What a Late Return Costs If You Owe
Two separate penalties run at the same time when you file late with a balance due, and they stack.
The failure-to-file penalty is 5% of the unpaid tax for each month or partial month the return is late, capped at 25%.1Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax Once your return is more than 60 days late, a minimum kicks in: $525 or 100% of the unpaid tax, whichever is less.2Internal Revenue Service. Failure to File Penalty That floor applies even to small balances.
The failure-to-pay penalty is a separate 0.5% per month, also capped at 25%. In any month both penalties apply, the filing penalty is reduced by the payment penalty, so the combined monthly rate is 5% rather than 5.5%.1Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax
Interest runs on top of both, from the original due date until you pay in full.3Office of the Law Revision Counsel. 26 USC 6601 – Interest on Underpayment, Nonpayment, or Extensions of Time for Payment, of Tax The rate is the federal short-term rate plus three points, compounded daily. For the first quarter of 2026, that’s 7%.4Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026 Interest also accrues on the penalties, so balances grow faster than most people expect.
If you’re owed a refund, none of these penalties apply. You will not owe the IRS anything for filing late when the government owes you money.
What Happens If You Keep Putting It Off
Eventually the IRS will file for you. The agency has statutory authority to prepare a substitute for return using the income data your employers, banks, and clients already reported.5Office of the Law Revision Counsel. 26 USC 6020 – Returns Prepared for or Executed by Secretary
That substitute return almost always inflates what you really owe. The IRS uses only the income it knows about and allows only the standard deduction. No itemized deductions, no business expenses, no child tax credit, no earned income credit, because none of those can be verified without a return from you.6Internal Revenue Service. 4.12.1 Nonfiled Returns Filing your own return, even late, keeps you in control of the numbers.
Unresolved balances also give the IRS progressively stronger collection tools, starting with a Notice of Federal Tax Lien, a public filing that signals the government has a claim against your property and that damages your credit and complicates any sale or refinance.7Internal Revenue Service. Understanding a Federal Tax Lien Filing voluntarily and arranging payment generally keeps the more aggressive enforcement off the table.
How to File Last Year’s Return
Start by pulling together the income documents for the year you missed: W-2s, 1099s for interest, dividends, freelance work, or retirement distributions, and any Schedule K-1s.8Internal Revenue Service. Gather Your Documents You also need records for deductible expenses, charitable gifts, and any payments you already made toward that year’s tax.
Missing something? Ask the employer or payer to resend it. If that doesn’t work, request a wage and income transcript from the IRS, which shows what payers reported for you that year. You can pull transcripts through your IRS online account or request them with Form 4506-T.9Internal Revenue Service. Transcript Types for Individuals and Ways to Order Them The transcript won’t show your deductible expenses, but it anchors the income side.
Use the forms and instructions for the year you’re filing, not this year’s. Tax rates, standard deduction amounts, and credit rules change every year, and the wrong form will give you the wrong answer. The IRS keeps prior-year forms in a searchable archive.10Internal Revenue Service. Prior Year Forms and Instructions
IRS Free File does not handle prior-year returns.11Internal Revenue Service. E-file: Do Your Taxes for Free Some commercial software and professional preparers can e-file recent prior-year returns, though the capability is limited and the IRS does not currently require preparers to e-file prior-year returns.12Internal Revenue Service. Frequently Asked Questions: E-file Requirements for Specified Tax Return Preparers If e-filing isn’t available, print the return and mail it.
Send paper returns by certified mail with a return receipt. Federal law treats the certified postmark date as the official filing date even if the envelope reaches the IRS days later, and the receipt is your proof.13Office of the Law Revision Counsel. 26 USC 7502 – Timely Mailing Treated as Timely Filing and Paying Keep copies of everything.
Paper processing takes a while. As of early 2026, the IRS is working on paper Form 1040 returns received roughly four to six weeks earlier, and anything needing correction takes longer.14Internal Revenue Service. Processing Status for Tax Forms If you have other unfiled returns, the IRS can hold any refund until those are resolved.15Internal Revenue Service. Filing Past Due Tax Returns
If You Can’t Pay the Full Balance
Pay what you can with the return. Any payment reduces the base that penalties and interest are calculated against. The IRS accepts:
- Direct Pay, a free bank transfer through IRS.gov with no registration.
- Debit or credit card, with provider processing fees.
- EFTPS, the Electronic Federal Tax Payment System, which requires enrollment.
- Check or money order mailed with a Form 1040-V voucher to the address in the form instructions.
Installment Agreements
If you owe $50,000 or less in combined tax, penalties, and interest, you can apply for a monthly payment plan online and spread the balance over up to 72 months.17Internal Revenue Service. IRS Payment Plan Options Setup fees depend on how you apply and how you pay:18Internal Revenue Service. Payment Plans; Installment Agreements
- Direct debit, online application: $22.
- Direct debit, phone or mail: $107.
- Other payment methods, online: $69.
- Other payment methods, phone or mail: $178.
- Low-income taxpayers: fee waived for direct debit; $43 for other methods, which may be reimbursed.
Short-term plans of 180 days or less have no setup fee no matter how you apply. Penalties and interest keep running under any plan until the balance is cleared.
Offer in Compromise and Hardship Status
An Offer in Compromise settles the debt for less than the full balance when you genuinely cannot pay or when paying would create financial hardship. The IRS weighs your income, expenses, assets, and future earning potential.19Internal Revenue Service. Offer in Compromise Approval rates are low because the standard is strict.
If paying anything at all would leave you unable to cover basic living expenses, ask the IRS to place your account in currently not collectible status. Active collection stops, though interest and penalties continue to accrue.20Internal Revenue Service. 5.16.1 Currently Not Collectible You’ll typically need to submit a Collection Information Statement to prove the hardship. The IRS reviews the status periodically, and the underlying debt has a 10-year collection statute, so some balances expire before the agency ever resumes collection.
Getting Penalties Reduced or Removed
Plenty of late filers qualify for relief and never ask. Two main paths cover most people.
First-Time Abatement
If your record is clean for the three tax years before the one you missed, meaning you filed everything required and had no penalties assessed, the IRS will typically waive both the failure-to-file and failure-to-pay penalties.21Internal Revenue Service. Administrative Penalty Relief You request it by phone or by letter. For most people filing a single late return, this is the right first move, and it works more often than people assume.
Reasonable Cause
If first-time abatement isn’t available, the IRS may still remove penalties for reasonable cause. The test is whether you used ordinary care but still couldn’t file or pay on time. Serious illness, a death in the immediate family, natural disasters, inability to obtain records, and reliance on wrong professional advice all count.22Internal Revenue Service. 20.1.1 Introduction and Penalty Relief Forgetting or not knowing you had to file generally doesn’t. Send a written explanation with supporting documentation, either attached to the return or in response to the penalty notice.
Interest is a different matter. It cannot be abated except in the rare case of an IRS error. Even with every penalty waived, you’ll still owe interest on the underlying tax from the original due date.
If a Refund Is Coming, Watch the Three-Year Clock
You have three years from the original due date of the return to claim a refund.15Internal Revenue Service. Filing Past Due Tax Returns For a 2022 return due April 18, 2023, the deadline is April 18, 2026. After that date the money goes to the U.S. Treasury permanently.
The same three-year window applies to refundable credits like the earned income credit. Eligible and never claimed it? That credit disappears when the window closes.23Office of the Law Revision Counsel. 26 USC 6511 – Limitations on Credit or Refund People who had taxes withheld but never filed are the biggest group leaving money on the table. If that’s you, check the date first and file before anything else.
A Note for Self-Employed Filers
If you’re self-employed, filing isn’t only about taxes. Your self-employment tax funds Social Security, and the Social Security Administration only picks up earnings credits from income reported on a filed return. An unfiled year means zero credits for that year, which can reduce your eventual retirement or disability benefits.15Internal Revenue Service. Filing Past Due Tax Returns W-2 employees are covered through their employer’s payroll reporting, so this is a self-employment issue specifically.
When to Bring in a Professional
One missed year with straightforward W-2 income is manageable on your own with the prior-year forms and the free IRS resources. The picture changes with multiple unfiled years, self-employment with real expenses, IRS notices you’ve been ignoring, or a substitute return the IRS has already prepared. Those bring overlapping deadlines, penalty math, and decisions about sequencing.
An enrolled agent or CPA who works in tax resolution can request penalty abatement, set up installment agreements, and handle collection notices for you. Fees vary with complexity; expect at least $150 to $200 per hour for professional preparation of a single late return, and higher for more complex cases. The IRS also offers free help through the Taxpayer Advocate Service for people facing financial hardship or systemic processing problems.