What is the penalty for late US tax filing?

Answer

Late US tax filing can incur two main penalties: a failure-to-file penalty (5% per month, max 25%) and a failure-to-pay penalty (0.5% per month, max 25%). Interest also accrues on unpaid taxes and penalties.

Internal Revenue Service (IRS)
Last Updated:May 16, 2026

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Understanding US Tax Filing Penalties

When you file your federal income tax return late in the United States, the Internal Revenue Service (IRS) typically assesses two types of penalties: the failure-to-file penalty and the failure-to-pay penalty.

Failure-to-File Penalty

This penalty is generally 5% of the unpaid taxes for each month or part of a month that a tax return is late. The maximum penalty is 25% of your unpaid taxes. If your return is more than 60 days late, the minimum penalty can be a fixed amount, which was $485 in 2023, or 100% of the tax owed, whichever is smaller. This penalty is often more substantial than the failure-to-pay penalty.

Failure-to-Pay Penalty

The failure-to-pay penalty is 0.5% of the unpaid taxes for each month or part of a month the taxes remain unpaid. Similar to the failure-to-file penalty, this also has a maximum cap of 25% of your unpaid taxes. If both penalties apply in the same month, the failure-to-file penalty is reduced by the failure-to-pay penalty, so the combined total is 5% per month. Additionally, interest charges are applied to both unpaid taxes and penalties, compounding the amount owed.

Mitigating Late Filing Penalties

You may avoid or reduce penalties if you have a reasonable cause for filing or paying late and can demonstrate this to the IRS. Examples of reasonable cause include natural disasters, serious illness, or unavoidable absence. The IRS also offers a First-Time Abatement policy for certain penalties if you have a clean compliance history for the past three tax years. Filing an extension for your tax return can prevent the failure-to-file penalty, but it does not extend the time to pay your taxes, meaning the failure-to-pay penalty and interest would still apply if you owe money.

Immediate Steps for Late Filers

  1. File your tax return as soon as possible, even if you cannot pay the full amount due. The failure-to-file penalty is much higher than the failure-to-pay penalty.

  2. Pay as much of your tax liability as you can immediately to minimize the failure-to-pay penalty and interest.

  3. If you cannot pay in full, contact the IRS to explore payment options, such as an installment agreement or offer in compromise.

  4. If you believe you have a valid reason for filing or paying late, prepare documentation to support a request for penalty abatement due to reasonable cause.

  5. Check your tax transcript or contact the IRS to confirm that all penalties and interest are correctly applied to your account.

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