Mistakes happen. If you make a filing error or forget to include something on your tax return and have already filed it, you can file an amended return. Amended tax returns let you correct mistakes up to three years after the filing deadline.
When to File an Amended Return
The IRS will correct common errors on your tax return. But for bigger mistakes or omissions, you’ll need to file the amended return. These can include:
- Your filing status changed
- You forgot to claim certain qualifying deductions or credits
- You need to add or remove a dependent
- You need to correct your reported income
Pro Tip: Use the Interactive Tax Assistant tool to find out if you need to file an amended return.
Changes made on a federal return may also affect state taxes. Contact the state tax agency to confirm if this applies to your situation.
How to File an Amended Return
File Form 1040-X to amend.
File using IRS Form 1040-X, Amended U.S. Individual Income Tax Return, to correct your tax return. If you filed your original tax return with ezTaxReturn, we can guide you step-by-step through your amended return.
All other amended returns must still be mailed to the IRS. When filing by mail, taxpayers should indicate the year of the original return and explain all changes made by attaching any forms or schedules. You can then sign and mail Form 1040-X to the address listed in the instructions. Taxpayers filing Form 1040-X in response to an IRS letter should mail it to the address shown on the letter.
Use separate forms if amending more than one tax year.
You must file and submit a separate Form 1040-X for each tax year to avoid confusion. Check the box for the calendar year or enter the other calendar year or fiscal year you are amending. The form’s instructions have the mailing address for the amended return.
Track your amended return status online.
You can track the status of your amended tax return in English and Spanish using Where’s My Amended Return? Amended returns take up to 16 weeks to process and up to three weeks from the date of mailing to show up in the system. Before that time, there’s no need to call the IRS unless the tool specifically tells the taxpayer to do so.
Tips for Filing an Amended Return
File within three-year time limit.
Taxpayers generally have three years from the date they filed their original tax return to file Form 1040-X to claim a refund. You can also file it within two years of the date you paid the tax, if that date is later.
Don’t amend for math errors or missing forms.
You generally don’t need to file an amended return to correct math errors on your original return. The IRS may correct math or clerical errors on a return and may accept it even if you forgot to attach certain tax forms or schedules. The IRS will mail a letter to you, if necessary, requesting additional information.
Wait to receive your refund before filing.
Sometimes you’ll be eligible for a larger refund after amending your return. However, if you are due refunds from your original tax return, wait for the IRS to process the return and issue the refund before filing Form 1040-X to claim an additional refund.
FAQs About Filing an Amended Tax Return
When should I file an amended tax return?
You should file an amended tax return when you discover an error or omission on a previously filed return—such as missing income, incorrect deductions, filing status changes, or overlooked tax credits.
How do I file an amended tax return with the IRS?
To amend a federal return, you must file Form 1040‑X, either electronically (for eligible years) or by mail. You’ll need to explain what changed, why it changed, and include any supporting forms or schedules.
How long do I have to amend my tax return?
Most taxpayers have three years from the date they filed the original return—or two years from the date they paid the tax, whichever is later—to submit an amended return.
Can I amend my tax return online?
Yes. The IRS allows electronic filing of amended returns for tax years 2021 and later, as long as the original return was filed electronically.
Will filing an amended return delay my refund?
Amended returns typically take up to 16 weeks to process, and sometimes longer. The IRS provides a “Where’s My Amended Return?” tool to track your status.
Do I need to amend my state tax return too?
If your federal amendment changes your income, deductions, or credits, you may also need to amend your state return. Each state has its own form and deadline, so check your state’s tax agency guidelines.
What happens if I made a small mistake—do I still need to amend?
Minor math errors or missing forms are often corrected automatically by the IRS. You only need to amend if the mistake affects your tax liability, refund amount, or filing status.
Will filing an amended return trigger an audit?
Filing an amended return does not automatically trigger an audit. However, the IRS may review the changes more closely, so ensure all information is accurate and well‑documented.
Can I amend a tax return if I already received my refund?
Yes. You can file an amended return even after receiving your refund. If the amendment results in an additional refund, the IRS will issue a separate payment.
What documents should I include with an amended tax return?
Include any corrected forms, updated schedules, and documentation supporting the changes such as W‑2s, 1099s, receipts, or credit eligibility proof.
Can ezTaxReturn help me file an amended tax return?
Yes. ezTaxReturn guides you step‑by‑step through the process of preparing an amended return, helping you correct mistakes quickly and accurately so you can stay compliant with IRS rules.
The articles and content published on this blog are provided for informational purposes only. The information presented is not intended to be, and should not be taken as, legal, financial, or professional advice. Readers are advised to seek appropriate professional guidance and conduct their own due diligence before making any decisions based on the information provided.
