Get step-by-step instructions for how to amend a tax return using Form 1040-X, including deadlines and tips for tracking the status with the IRS.

To amend your return, you use Form 1040-X, also known as an Amended U.S. Individual Tax Return. Here is how to correct amounts on your tax return and when to file your 1040-X.

IRS.gov has a PDF version of Form 1040-X that you can fill out online, then download, print and send. Or you can amend your return electronically using tax software like TurboTax or H&R Block.

Form 1040-NR. You may need to fill this one out if you're not a U.S. citizen or U.S. national and don't have a green card, haven't met the IRS requirement known as the "substantial presence test ...