TurboTax Free Edition is for filers that use a Form 1040 with no additional schedules. If your tax situation requires additional forms/schedules, you will be prompted to upgrade.
Please see the below FAQ for more information on how to review fees and remove any unwanted add-ons:
https://ttlc.intuit.com/community/charges-and-fees/help/why-am-i-being-charged-for-turbotax-free-edition/00/25707