2017, 2018 and 2019 will still be available as desktop software (CD/download) after the current online software for 2019 closes permanently. But you will only be able to print sign and mail your 2019 return after October 15, 2020. E-filing will be closed permanently; then when the 2020 tax filing season opens in January 2021 you will only be able to prepare or e-file a 2020 return using the online program.
You will be able to purchase the past year software from TurboTax or from various retailers such as Amazon.
If you are getting a refund, there is not a penalty for filing past the deadline. If you owe taxes, the interest/penalties will be calculated by the IRS based on how much you owe and when they receive your return and payment. The IRS will bill you for this; it will not be calculated by TurboTax.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
