If you don't qualify for Free File program, you can still file a free federal tax return using TurboTax Federal Free Edition Online. Just visit TurboTax.com to get started.

TURBOTAX ONLINE/MOBILE. Try for Free/Pay When You File: TurboTax online and mobile pricing is based on your tax situation and varies by product.

In the regular Turbo Tax Free Edition, information that you can enter is limited. 

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.

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

https://freefile.intuit.com/

How to switch to the Free File website

https://ttlc.intuit.com/community/downgrading/help/how-do-i-switch-to-turbotax-free-file-program/01/...