How did you do the prior years? Did you use Turbo Tax? You would have needed to buy and install the Desktop program for each year. The Online version is only good for 2024 now.
Online is only good for 1 return per account. But you can use the same email address for 5 accounts. You can start another return in TurboTax Online by:
Did you use desktop download software for the 2022 and 2023 returns? You cannot use online TurboTax for either year---only the download on a full PC or Mac, and the returns must be filed by mail. Mail them in separate envelopes. Do not combine them in any way.
If you have completed them correctly then you can use either online TurboTax or the 2024 desktop download. Transfer 2023 in to the 2024 return before you enter any 2024 data.
How to transfer last year’s return?
You will not be able to use the 2023 AGI to e-file 2024, so try using "zero" as the AGI instead.
When you use online TurboTax software you get one return per fee.
Each return needs its own account and user ID. If you use the same account and user ID for a second return, the second one overwrites the first return and it is lost forever.
ONLINE 2024
https://turbotax.intuit.com/personal-taxes/online/
DOWNLOAD (This requires a full PC or Mac—-cannot be used on a mobile device)
https://turbotax.intuit.com/personal-taxes/cd-download/