How to Amend Your Return1. Use Form 1040X if you filed your tax return using one of the following Forms: 1040, 1040A or 1040EZ. Along with this form, you'll need to include:
- A copy of the return you are amending, supporting forms, schedules and any worksheets you completed;
- Any notices from the IRS on any adjustments to that return; and
- Instructions for the return you are amending. If you don’t have the instructions, you can order them by calling 1-800-TAX-FORM (1-800-829-3676) or find them online at www.irs.gov/formspubs.