Are you asking about doing a 2015 return? Online is only for the current year so you have to buy the Desktop CD/Download program here <a rel="nofollow" target="_blank" href="
https://turbotax.intuit.com/personal-taxes/past-years-products/">https://turbotax.intuit.com/persona...Or you can get the blank forms from the IRS and do them by hand. Either way you will have to print and mail prior year returns. And send each year in a separate envelope so the IRS doesn't miss any.
