Use Form 1040X, Amended U.S. Individual Income Tax Return, to file an amended tax return. Be advised – you can't e-file an amended return. A paper form must be mailed in.
What if you've sent in your income tax return and then discover you made a mistake? You can make things right by filing an amended tax return using Form 1040-X.
Use Form 1040-X, Amended U.S. Individual Income Tax Return, and follow the instructions. You should amend your return if you reported certain items incorrectly on the original return, such as filing status, dependents, total income, deductions or credits.
You can file Form 1040-X, Amended U.S. Individual Income Tax Return electronically with tax filing software to amend your Form 1040, 1040-SR, 1040-NR, or 1040-SS/PR for the current or two prior tax periods. If amending a prior year return originally filed on paper, then the amended return must also be filed on paper.
Login on the CDTFA's secure website with your Username and Password. Select the account for which you want to submit an amended return for under the "Accounts" tab. Select the period for which you want to submit an amended return for under "Recent Periods" tab.
What do I need to know? If you realize there was a mistake on your return, you can amend it using Form 1040-X, Amended U.S. Individual Income Tax Return. For example, a change to your filing status, income, deductions, credits, or tax liability means you need to amend your return.
Allow 8 to 12 weeks for your amended return to be processed; however, in some cases, processing can take up to 16 weeks. It can take up to three weeks after filing it to show up in our system. There's no need to call the IRS during that three-week period unless the tool specifically tells you to do so.
The IRS does recommend that you wait until you get your original refund before you submit an amendment.
You can file Form 1040-X, Amended U.S. Individual Income Tax Return electronically with tax filing software to amend your Form 1040, 1040-SR, 1040-NR, or 1040-SS/PR for the current or two prior tax periods. If amending a prior year return originally filed on paper, then the amended return must also be filed on paper.
If the IRS rejected the amended tax return because of a procedural error (usually with IRS letter 916C), it might be as simple as refiling the amended return, providing proof of an item on your return, or filing an additional form.