You cannot file a prior year return Online, the Online version is only to prepare the current year tax return.
To prepare your 2015
return using TurboTax you need the 2015 Desktop
tax software and the return must be mailed in. You can go to the following website to purchase and download TurboTax’s 2015
desktop tax software.
http://turbotax.intuit.com/personal-taxes/past-years-products.jsp
Or, You can go to the IRS website to get Prior Year Federal Forms,
Instructions & Publications to manually do your returns (enter your form
number in the find box)
http://www.irs.gov/app/picklist/list/priorFormPublication.html
If you need to file a State return you can go to your
State's website for prior year forms to manually fill out & mail.
