Every tax year has to be filed separately. You cannot combine them. You need to use the software for each year to prepare the returns for those years, and they will have to be printed, signed, and mailed. They cannot be e-filed. You need desktop software in order to prepare those tax returns:
https://turbotax.intuit.com/personal-taxes/past-years-products/
Note: Mail each tax return separately in separate envelopes, and use a mailing service that will track it like UPS, Fedex or certified mail so you will know the IRS received it.
**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.**
