The current online software can only be used to prepare and file a 2018 return. Software is still available for 2015-2017, but must be downloaded to a full PC or Mac, and the returns must be mailed in separate envelopes. It is too late to get a tax refund for any tax year earlier than 2016 now. If you owe tax due then the IRS still wants you to pay, though.
To file a return for a prior tax year
If you need to prepare a return for 2015, 2016, or 2017 you can purchase and download desktop software to do it, then print, sign, and mail the return(s)
https://turbotax.intuit.com/personal-taxes/past-years-products/
Remember to prepare your state return as well—if you live in a state that has a state income tax.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.
Note: The desktop software you need to prepare the prior year return must be installed/downloaded to a full PC or Mac. It cannot be used on a mobile device.
You can get the forms for years earlier than 2015 from the IRS site and prepare them by hand--or you could seek local paid tax help to help with all the years you have not been filing tax returns.
https://www.irs.gov/forms-pubs/prior-year
**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.**
