Taxpayers who discover they made a mistake on their tax returns after filing can file an amended tax return to correct it. This includes things like changing the filing status, and correcting income, credits or deductions. ... Complete and mail the paper Form 1040-X, Amended U.S. Individual Income Tax Return.

Is it worth filing an amended tax return?

You don't need to file an amended return if you discover a simple math or clerical error on your return. The IRS can correct those types of mistakes on its own. An amended return isn't necessary if you forgot to attach a certain form or schedule to your return, either.

How long does an amended return actually take?

How long will it take to process an amended return? A Form 1040-X, Amended U.S. Individual Income Tax Return can take up to 16 weeks to process once we receive it.