How To File An Amended Tax Return. If you're outside of that window, you can't claim a refund by amending your return. If you have already filed taxes and realized you made a mistake that needs correcting, you'll need to file form 1040x.

If your error is something like bad math, an irs representative will likely fix it during processing.

How to prepare an amended return. Amending a tax return can help you obtain a larger tax refund if you made a mistake when you filed your tax return. How to file an amended return. An amended tax return is a way for you to correct an incomplete or inaccurate tax return that you have previously filed. How do i file an amended tax return? There must be a record of an original electronically filed return for tax how do i file my amended return electronically? Amended returns for any other tax years or tax types must be filed by paper. Filing an amended tax return gives you the chance to correct tax forms you've already filed, even if the mistake or omission is on an old return. You amended your federal tax return or recently audited by the irs. These topics show you how to file an amended tax return When to file a tax amendment.