TurboTax does have 2 free products, but if you are being charged, you
are not in one of them. The regular Free Edition cannot handle student loan interest, but the TurboTax Free File Program (IRS affiliated) can. I'll tell you more about it below.
If you started out in regular Free
Edition (which is free for Federal and State), you may be asked to upgrade to Deluxe due to a situation in your return that Free
Edition cannot handle.
The regular
Free Edition is more limited this year due to tax law changes.
If you
need any of the new Schedules 1-6, for instance, then you can't use
Free Edition. You can read about the new schedules at the link below. If
you click the blue "see schedule" link there, it will show you what each
schedule looks like.
https://ttlc.intuit.com/questions/4511015-what-are-the-new-schedules
Here are some common things that cannot be handled by the regular Free Edition:
Itemized deductions
Business or 1099-MISC income
Sales of stocks/mutual funds/bonds
Rental property income
Foreign Earned Income
HSA
Credits, deductions and income reported on the
new schedules 1–6, such as the Student Loan Interest Deduction
TurboTax
also has another free product called
the TurboTax Free File Program. It is free for both Federal and
State--IF you meet just one of the qualifications. It can handle all
the usual forms without the limitations of regular Free Edition.
You have to meet only ONE of these qualifications:
1) 2018 AGI of $34,000 or less
or
2) Eligible for EIC (earned income credit)
or
3) Active duty military including Reservists/ National Guard with military W-2 and 2018 AGI of $66,000 or less
NOTE: If you switch to Free File Program by that method, and
find out later you don't qualify, you won't be able to go back to
regular Online TurboTax in that same account. So instead of switching
that way, if you wish you could start a new account (User ID) at the
Free File Program website, which would maintain the option of returning
to the other Online TurboTax account, if necessary.