There is not a Basic version for Online. You would downgrade to the Free Edition.
In the regular Turbo Tax Free Edition, information that you can enter is limited now. Why do I have to upgrade from the Free Edition?
https://ttlc.intuit.com/community/upgrading/help/why-do-i-have-to-upgrade-from-free-edition/00/26379
You can try to clear and start over https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-onli...
OR There is also The Turbo Tax Free File program which is free for federal and state. And has more forms than the Federal Free Edition, like Schedules A, B, C , D, E, F, EIC, H, K-1, SE, etc.
NOTE: You will have to log out of your regular Turbo Tax Account and setup a new account with a new username and new password or it will take you back to regular Turbo Tax.
To qualify for the Free File website you just need to meet one of these 3 things
AGI $36,000 or less
Active duty military with AGI of $69,000 or less
OR qualify for EIC (earned income credit.)
In order to use the Free File program, you have to start it at a special website. Click on the Orange button I Qualify, Let's get Started and set up a NEW account
https://freefile.intuit.com/
How to see your fees
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-review-my-fees-in-turbotax-online/0...
For help with fees
https://ttlc.intuit.com/community/charges-and-fees/help/what-can-i-do-to-reduce-my-fees/00/26051
