For tax year 2019
You'll need to purchase and download the TurboTax software for PC or Mac as TurboTax Online and the mobile app are only available for the current tax year.
After installing the software, open it and follow the onscreen instructions.
Prior year returns must be paper-filed, as e-filing is no longer available. We'll walk you through that process when you get to the File section in the software.
**Mark the post that answers your question by clicking on "Mark as Best Answer"
If you want to file for free you can fill out the forms by hand. Here are some basic forms.....
Here is the 2019 1040 return
or if you want bigger type use 1040SR for Seniors,
2019 Instructions https://www.irs.gov/pub/irs-prior/i1040gi--2019.pdf
2019 EIC and Tax Tables https://www.irs.gov/pub/irs-prior/i1040tt--2019.pdf
2019 Schedules 1-3
Don’t forget your state. And you will have to print and mail your returns. So be sure to attach copies of your W2s and any 1099s that have withholding on them. You have to mail federal and state in separate envelopes because they go to different places. Get a tracking number from the post office when you mail them for proof of filing.