First, make sure you really need to amend and that your 2020 return was accepted in TurboTax Online or paper-filed through the mail. You can't amend a return that hasn't been filed yet.
When you're ready to amend, find your situation below and follow the instructions.
TurboTax Online
TurboTax CD/Download
Once you are in the program, go back to the Personal Info section and delete him.
