Hi. You would need to purchase the desktop version of TurboTax since TurboTax online only works for the current year. You cannot e-file previous year returns. They do have to be mailed in.
Follow this link to purchase the downloadable versions of TurboTax. (only available for 2013, 2014, and 2015)
https://turbotax.intuit.com/personal-taxes/past-years-products/
You can download the Forms and Instructions free from the IRS web site at this link:
http://www.irs.gov/app/picklist/list/priorFormPublication.htmlTip: If you prepare multiple years of prior returns, mail each one to
the IRS in a separate envelope to be sure that each one is recognized as
a separate tax return.
