If you have made an error on your tax return, or if you forgot to assert a deduction or credit on your original form, there is no need to worry. To correct these mistakes, locate the IRS Form 1040X: The Amended U.S. Singular Income Tax Return. If you need to complete one of these forms, stick to the tips listed below. 1. Don’t Record Another Total Expense Form to Make a Redress The first thing that comes to mind when you realize that you forgot to include a deduction or cred