An amended return uses the original return as a starting point. To prepare an amended return with TurboTax, you would first have to recreate your original return in TurboTax, making sure that it exactly matches the return that you filed, then amend the recreated return.
An amended return (Form 1040X) cannot be e-filed. You have to print it, sign it, and file it by mail. It takes the IRS up to 16 weeks to process an amended return.
Don't file an amended return until your first return has been processed and you have received the original refund.
