You do not wait for the 2017 tax return to file the 2016 return. Download the PDF of the 2016 tax return. You will have to print, sign and date the tax return for mailing. If you have a tax refund there is no penalty for filing a tax return after the due date.
To access your prior year tax returns sign onto the TurboTax website with the userID you used to create the account - https://myturbotax.intuit.com/
Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show. Click on the Year and Click on Download/print return (PDF)
