You can check the status of your Form 1040X, Amended U.S. Individual Income Tax Return, using the Where’s My Amended Return? 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.

When using 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 online 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 16 weeks to process. It can take up to three weeks from the date you mailed it to show up in our system. There’s no need to call the IRS during that three-week period unless the tool specifically tells you to do so.