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IRS.gov Website

Frequently Asked Tax Questions

IRS Procedures - Amended Returns & Form 1040X

  1. What should I do if I made a mistake on my federal return that I have already filed?
  2. I received a refund that is more than I should have received because I made a mistake on my return. I have not yet cashed this check. What should I do now?
  3. Can you send an amended tax return electronically?
  4. How can I check the status of my amended return?

Rev. date: 08/17/2012

What should I do if I made a mistake on my federal return that I have already filed?

It depends on the type of mistake that you made:
When filing an amended or corrected return:

Rev. date: 08/04/2012

I received a refund that is more than I should have received because I made a mistake on my return. I have not yet cashed this check. What should I do now?

Many mistakes are corrected in processing and a letter of explanation is mailed at the time the refund is issued.
If the mistake was not corrected in processing, you need to:

Rev. date: 08/04/2012

Can you send an amended tax return electronically?

No, an amended return must be filed on a paper Form 1040X (PDF), Amended U.S. Individual Income Tax Return, and mailed to the IRS at the address specified in the instructions to Form 1040X.   You may submit the form after the IRS processes your original return.
Allow the IRS 8-12 weeks to process the Amended Return.

Rev. date: 08/04/2012

How can I check the status of my amended return?

You will need to contact our assistance line toll-free at 800-829-1040 to receive information on the processing of your amended return. Amended/corrected returns are processed as quickly as possible. However, it could take 8 to 12 weeks to process an amended return.