How can I file my deceased Dad's last return? Turbotax keeps loading my information.

[VolvoGirl]

Are you using the Online version?    Online is only good for 1 return per account.  But you can use the same email address for 5 accounts.   Start another Online return here and sign up for a new account

https://turbotax.intuit.com/personal-taxes/online/

The Desktop program can do unlimited returns and efile 5.  You can buy the Desktop CD/Download program at

TurboTax® 2021-2022 CD/Download Tax Software, Compare Desktop Tax Preparation

[M-MTax]

Pretty sure if you're using online you can't use your account for your Dad's return. You have to use his if he had one or start a new one for him to do his final return.