If you have been preparing an online return and haven't already paid for it and filed a 2016 return, you can download your *.tax2016 data file and open it in desktop software (CD/download) to finish it without starting over. Here's how
FAQ:
How do I switch from TurboTax Online to the TurboTax software?
https://ttlc.intuit.com/replies/3302260
