Do You Have to Submit a New Tax Form If You Have Already Filed?
If they accept it, you will need to wait until you have received your refund and then amend that return to make changes, if needed. Amended returns have to be printed and mailed in and take up to 16 weeks to be processed.
How long does it take to amend a tax return?
Generally, you have three years from the time you file the original return to amend it. The IRS allows you to amend most items on your original tax return, but the changes you make must be permissible under the tax law that applies to the year you are amending.
What happens if I make a mistake on my tax return?
If you find you made a mistake, receive revised Forms 1099 or K-1, etc., the IRS says you should amend. But you are not actually required to file an amended return. If you do, though, you can’t make only corrections that get you money back, but not those that increase your tax liability.