TurboTax Online is only for individual tax returns. You will need to purchase TurboTax Business for Desktops to complete the estate return. The estate return will need a return filed from date of death to 12/31, if that is the year end you choose for the estate. If you are preparing the decedent's final individual tax return and they passed away in 2020, you can do that with TurboTax Online.
Here is a link to purchase TurboTax Business to complete the estate 1041.
Here is a link the talks about items to consider when filing an individual's final tax returns.
