Yes, you can still file your taxes late. The IRS accepts late federal returns electronically and by mail throughout the year, and the process is the same one used for on-time returns.1Internal Revenue Service. Electronic Filing (e-file) What changes is the money. If you’re owed a refund, filing late costs you nothing, though you do have a deadline to claim it. If you owe taxes, penalties and interest have been running since the original April 15 due date, and the sooner you file, the sooner you stop the larger of them.
What Filing Late Costs When You Owe
Two separate penalties apply when you miss the deadline with a balance due, and interest runs on top of both.
The failure-to-file penalty is the expensive one. It’s 5% of your unpaid tax for each month or partial month your return is late, up to a maximum of 25%.2Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax A return that slips even one day into a new month is charged for the full month. Once you’re more than 60 days late, a minimum penalty applies. For returns due in 2026, that minimum is $525 or 100% of the unpaid tax, whichever is less.3Internal Revenue Service. 20.1.2 Failure To File/Failure To Pay Penalties
The failure-to-pay penalty is smaller but keeps running longer. It’s 0.5% of the unpaid balance per month, also capped at 25%.4Internal Revenue Service. Failure to Pay Penalty When both penalties apply in the same month, the failure-to-file penalty is reduced by the failure-to-pay amount, so the combined rate is 5% per month rather than 5.5%.2Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax That math is the reason to file now even if you can’t pay: once the return is in, only the 0.5% monthly penalty keeps accruing.
Interest compounds daily on any unpaid tax and on penalties already assessed. The rate is set quarterly at the federal short-term rate plus three percentage points, and for the first quarter of 2026 the individual underpayment rate is 7%.5Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026 Unlike penalties, interest cannot be waived. The only way to stop it is to pay the balance in full.6Internal Revenue Service. Interest
If You’re Getting a Refund
There is no penalty for filing late when the government owes you money. The failure-to-file penalty is calculated as a percentage of unpaid tax, so with a zero balance the penalty comes to zero.7Internal Revenue Service. Failure to File Penalty The same is true of the minimum penalty for returns filed more than 60 days late.
You can’t wait indefinitely, though. Federal law generally gives you three years from the original filing deadline to claim a refund; after that, the money goes to the U.S. Treasury and is gone for good.8Internal Revenue Service. Time You Can Claim a Credit or Refund9Office of the Law Revision Counsel. 26 USC 6511 – Limitations on Credit or Refund For a 2025 tax year return, that gives you until roughly April 15, 2029.
How to File a Past-Due Return
Complete the same forms you would have filed on time and submit them electronically or by mail. If you owe, attach a payment for as much of the balance as you can afford. Every dollar paid stops accruing interest and failure-to-pay penalty from that day forward.
After the IRS processes your return, it will send a notice showing any penalties and interest assessed. If you think the penalties should be reduced, you can dispute them by calling the number on the notice or submitting a written request.7Internal Revenue Service. Failure to File Penalty Keep copies of the return, payment confirmations, and any correspondence in case questions come up later.
If You Can’t Pay the Full Balance
Filing without a full payment is always better than not filing. Late-filing penalties are ten times the size of late-payment penalties, so getting the return in matters more than clearing the balance.
Short-Term Payment Plan
If you can pay within 180 days, you can set up a short-term plan with no setup fee. Interest and the failure-to-pay penalty continue to accrue until the balance is gone, but you avoid the cost of a formal installment agreement.
Installment Agreement
If you owe $50,000 or less in combined tax, penalties, and interest, you can apply online for a monthly payment plan.10Internal Revenue Service. Online Payment Agreement Application The setup fee is $22 for automatic bank withdrawals or $69 for manual monthly payments, and low-income taxpayers may qualify for reduced or waived fees. Once an approved agreement is in place and the return was filed on time, the failure-to-pay penalty rate drops from 0.5% to 0.25% per month.4Internal Revenue Service. Failure to Pay Penalty
Offer in Compromise
If you genuinely cannot pay the full debt, you may be able to settle for less through an offer in compromise. You must be current on all required filings and not in an open bankruptcy proceeding to apply.11Internal Revenue Service. Offer in Compromise The IRS approves an offer when the amount you propose represents the most it can reasonably expect to collect based on your income, expenses, and assets.
Getting Penalties Reduced or Removed
Two paths can wipe out penalties after they’ve been assessed.
First-Time Penalty Abatement
If your compliance history is clean, you may qualify for first-time abatement. To be eligible, you must have filed all required returns and had no penalties, other than estimated tax penalties, on the same type of return for the three tax years before the one at issue.12Internal Revenue Service. 20.1.1 Introduction and Penalty Relief It covers both the failure-to-file and failure-to-pay penalties. You can request it by phone or by responding to a penalty notice.
Reasonable Cause Relief
If first-time abatement isn’t available, you can ask for relief by showing you had a legitimate reason for filing or paying late. The IRS reviews these requests individually. Circumstances that may qualify include:
- Natural disasters or fires that destroyed records or blocked filing
- Serious illness or the death of the taxpayer or an immediate family member
- An inability to obtain records needed to complete the return
- System issues that prevented timely electronic filing or payment
You’ll need to explain what happened, how it prevented you from meeting the deadline, and what you did to comply as soon as possible. If you can’t resolve it by phone, submit a written request using Form 843 along with supporting documents such as medical records or disaster documentation.13Internal Revenue Service. Penalty Relief for Reasonable Cause
State Taxes Are Separate
Everything above concerns your federal return. Many states impose their own late-filing and late-payment penalties, and the rules vary widely. If you owe state income taxes, check your state tax agency’s website for its deadlines and penalty structure.