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Fixing tax problems

Made a mistake, missed a deadline or can't pay? Most tax problems can be fixed, and they're cheaper to fix early. Here's how each one usually works.

Fixing a mistake Missed the deadline Can't pay Penalty relief Keeping records

Fixing a mistake on a filed return

Amend with Form 1040-X

  • Use Form 1040-X to correct income, deductions, credits or filing status. Many amended returns can be e-filed.
  • Wait until your original return is processed before amending.
  • To claim a refund, you generally have three years from when you filed (or two years from when you paid the tax, if later).
  • Check status with the IRS "Where's My Amended Return?" tool.

When you don't need to amend

  • Simple math errors: the IRS usually corrects them and sends a notice.
  • A forgotten form the IRS already asked about: respond to the notice instead.
  • A corrected W-2 or 1099 that arrives late: amend only if it changes your tax.
Ask yourself: Does this change my tax, or just a detail the IRS will fix?

Missed the filing deadline

File as soon as you can

  • If you're owed a refund, there's generally no penalty for filing late, but you must claim it within three years or lose it.
  • If you owe, the failure-to-file penalty is usually 5% of the unpaid tax for each month or part of a month late, up to 25%.
  • Returns more than 60 days late have a minimum penalty.
  • Interest also adds up on unpaid tax.

Next time: get an extension

  • Form 4868 gives an automatic extension to file until October 15.
  • It's an extension to file, not to pay. Pay what you expect to owe by April 15 to avoid most penalties.
  • Missed several years? File the most recent years first and get help from a tax professional.

Can't pay what you owe

Your options

  • File on time anyway. The failure-to-pay penalty (usually 0.5% a month, up to 25%) is much smaller than the failure-to-file penalty.
  • Short-term payment plan: extra time, up to 180 days, to pay in full.
  • Long-term payment plan (installment agreement): monthly payments. Many people can apply online at IRS.gov.
  • Offer in compromise: settling for less than you owe, for people who truly can't pay. It has strict rules.
  • Currently not collectible: a pause on collection during serious financial hardship.

Watch out for

  • Companies promising to settle your tax debt for "pennies on the dollar." Many charge large fees for things you can apply for yourself.
  • Ignoring notices. Collection escalates over time.
  • Using credit cards or loans without comparing their cost with an IRS payment plan.

See Got an IRS letter? for how collection notices escalate.

Ask yourself: Can I pay this in full within a few months, or do I need a longer plan?

Asking for penalty relief

First-time abatement

If you have a clean history for the past three years and are current on filing (and on payments or a payment plan), the IRS may remove certain penalties for one year. You can often ask by phone or in writing.

Reasonable cause

If something outside your control kept you from filing or paying on time, like a serious illness, a disaster or not being able to get records, you can explain and ask the IRS to remove the penalty. Interest generally isn't removed.

Keeping records

  • Keep returns and the records behind them for at least three years from when you filed.
  • Keep them six years if you left out more than 25% of your income, and seven years for a bad debt or worthless securities claim.
  • Keep records about property, like a home or investments, until several years after you sell it.
  • Keep copies of every return you file. You can also get transcripts from your IRS online account.

If someone filed a return using your information, see Got an IRS letter? and IRS.gov/identitytheft. An Identity Protection PIN can help prevent it.

When to get professional help

Several years of unfiled returns, a large balance, an audit, a levy or lien notice, or a notice of deficiency. An enrolled agent, CPA or attorney can represent you. See Choosing a tax pro.

Sources

Last updated: November 14, 2026

This page was written from the sources below. Official sources are from the IRS or another government body; secondary sources are tax publications used to cross-check new rules. Tax law changes, so always confirm with the official source for the year you're filing.