The other option you have, if you prefer not to use TurboTax desktop software for the return, is to go here https://www.irs.gov/forms-pubs/prior-year on the IRS's website and print the amend forms to complete by hand and then mail. Once you are on that page, just type in search bar the word "amend" along with tax year you need. And it will pull up list of those forms for you. You can choose what you need and print them.
Amended returns for prior years cannot be prepared online with TurboTax. You'll only have option to amend current tax year online right now.
Also, the amended return must be prepared, printed and mailed if you use desktop software. Prior year returns can't be e-filed.
