@TQuintero A 2020 amended tax return, Form 1040-X, can only be printed and mailed, it cannot be e-filed using TurboTax.
Open the 2020 TurboTax program. Continue the 2020 tax return you want to amend.
Click on Federal Taxes (Personal using Home & Business)
Click on Other Tax Situations
Under Other Tax Forms
On Amend a return, click on start
