You can't.
If you use the download version of TurboTax (TT), instead of online, you can do a preliminary on your 2016 software by making a copy of your 2016 return and manipulating the numbers. It will not be exact because it has 2016 tax tables and thresholds, but it will be very close. But it cannot be transferred to the 2017 software. You will still have to re-enter the info when you get the 2017 software.
