How to Process a 1040X Form
- 1). Prepare Form 1040X. Due to the complexity of the return, you may want to consider getting a tax preparer to prepare the form for you. Be sure to sign Form 1040X, and if you do pay someone for filling out Form 1040X, then the prepare also must sign the form.
- 2). Refer to Page 4 of the Form 1040X instructions. This page provides several different addresses to mail the form to depending on your state or specific circumstances, so choose the proper address to mail the form.
- 3). Assemble any schedules Form 1040X requires. If you have a Form W-2 that was amended or Forms W-2G and 1099-R, these forms must be attached at the front of Form 1040X. Enclose a check or money order if you owe any additional taxes. Make the check or money order out to "United States Treasury." Put your name, address, daytime phone number and Social Security number on the check or money order.
- 4). Mail Form 1040X and any attached documents.
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