Yes,
If you've filed your return and need to add additional information, then you will have to prepare an amended return in TurboTax.
If you used TurboTax Online, simply log in to your account and select “Amend a return that was filed and accepted.”
If you used our CD/download product, sign back into your return and select “Amend a filed return.” You must file a separate Form 1040X for each tax return you are amending.
Amend ONLINE OR Amend CD/Download Amend 2016 - 2019
You will have to Mail the amended return. The IRS limits the system to only one Social Security number or Tax ID to be E-Filed. The states follow the Federal guideline. This is to guard against fraudulent tax returns.
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