TurboTax no longer sells or supports software for earlier tax years than 2018. You will not be able to get the software for 2014-2017 from TurboTax. Even if you find it on eBay, etc. you will not be able to get updates or support. If you are behind all the way back to 2014 taxes you should seek local paid tax help. And it is not possible to get refunds for tax years earlier than 2018----any refunds for 2017 or earlier have been forfeited. If you owe tax due though you still have to pay with penalties and interest. A paid tax pro may be better equipped to help you negotiate with the IRS if you owe a lot.
**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.**
