If you find errors or you left out information on your original return, use Form 1040X: Amended Tax Return to file an amended version of your federal return. By following the 1040X instructions and filing an amended return, you might:
- Receive an additional refund
- Owe additional taxes as a result of the correction
If you’re due a refund, the IRS will send it to you after it accepts your amended return. If you owe tax, send the amount owed to the IRS along with the 1040X tax form. If you owe interest or a penalty, the IRS will bill you.
When you amend a return for a specific reason, it’s a good idea to review your entire original return. Look for deductions, credits, and exemptions that you might have missed the first time around. This isn’t necessary as part of the amended tax return instructions, but you might wind up owing less money or getting more of a refund.