Electronic filing now available for Form 1040-X You can now file Form 1040-X electronically with tax filing software to amend your Form 1040, 1040-SR, or 1040-NR for the current or two prior tax periods. Paper filing is still an option for Form 1040-X. File Form 1040-X to: Correct Form 1040, 1040-SR, or 1040-NR (or older filings of Form 1040-A or 1040-EZ). Make certain elections after the deadline. Change amounts previously adjusted by the IRS. Make a claim for a carryback due to a loss or unused credit. Current revision Form 1040-X PDF Instructions for Form 1040-X (Print version PDF) Recent developments Change in Line 19 of the 2021 and 2023 Instructions for Form 1040-X -- 05-JUNE-2023 Notice 2023-21 makes more taxpayers eligible for a credit or refund if they timely file Form 1040-X to amend 2019 and 2020 income tax returns -- 17-MAR-2023 Taxpayers now have more options to correct, amend returns electronically -- 23-JUNE-2022 Other items you may find useful All Form 1040-X revisions 1040-X frequently asked questions Tax relief in disaster situations About Publication 17, Your Federal Income Tax Combat-Injured Veterans Tax Fairness Act claim information available Other current products Related forms About Form 843, Claim for Refund and Request for Abatement About Form 1040, U.S. Individual Income Tax Return About Form 1040-NR, U.S. Nonresident Alien Income Tax Return About Form 1045, Application for Tentative Refund About Form 1310, Statement of Person Claiming Refund Due a Deceased Taxpayer