Form 1040-X, Amended U.S. Individual Income Tax Return

File Form 1040-X to do the following.

Form 1040-X (PDF)

Error in Tax Calculation in Schedule D Tax Worksheet (Form 1040) – 12-SEP-2019

• Correct Forms 1040, 1040-A, 1040-EZ, 1040-NR, or 1040-NR EZ.
• Make certain elections after the prescribed deadline.
• Change amounts previously adjusted by the IRS.
• Make a claim for a carryback due to a loss or unused credit.