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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 my refund, and because I made a mistake on my return, it is more than I should have received. I have not yet cashed this check. What should I do now?
  3. How can I check the status of my amended return?

Rev. date: 12/17/2014

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 you made:
When filing an amended or corrected return:

Rev. date: 12/17/2014

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

Since the mistake was not caught and corrected during processing and you did not receive a letter of explanation showing a change, you need to:

Rev. date: 12/17/2014

How can I check the status of my amended return?

You can check the status of your Form 1040X (.pdf), Amended U.S. Individual Income Tax Return, using the Where's My Amended Return? (WMAR) online tool or by calling the toll-free telephone number 866-464-2050 three weeks after you file your amended return. Both tools are available in English and Spanish and track the status of amended returns for the current year and up to three prior years.

In either tool, you must enter your taxpayer identification number, such as your Social Security number, along with your date of birth and ZIP code to prove your identity. Once authenticated, you can view the status of your amended return across three processing stages--Received, Adjusted and Completed.  

The Web tool includes an illustrated graphic that visually communicates where your amended return resides within the processing stages. As a reminder, amended returns take up to 12 weeks to process and up to three weeks to show up in our system. There’s no need to call the IRS during that time unless the tool specifically tells you to do so.  
Additional Information
Tax Topic 308 - Amended Returns