I have to post for deceased father. Do I sign in with his name or mine?

 

Get your taxes done using TurboTax

Very sorry for your loss.   You will need to explain what you are trying to do.  Are you the executor of your father's estate?  Are you trying to prepare his final tax return?  If he had a TurboTax account you have to sign in to it using his account and user ID.  If you do not have that, then you cannot access his TT account.

**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**

Get your taxes done using TurboTax

Post where ?   Are you completing a tax return ? https://www.irs.gov/taxtopics/tc356