What to Do If You Realize You Made a Mistake After Filing Your Taxes

It's inevitable: You've filed your tax return and then you notice an errant form 1099 or a misplaced form W-2. What do you do?



First, take a deep breath. Mistakes happen. And this one is a pretty easy fix. When you make a mistake on your tax return either because you left off some information or failed to file a particular schedule, you simply correct your mistake by filing a federal form 1040X, Amended U.S. Individual Income Tax Return.