Can i file my 2017's on Turbotax?

[JulieCo]

No, 2017 income and forms cannot be reported on a 2018 return and TurboTax Online is only for 2018 returns.  2017 income and tax forms need to be reported on a 2017 tax return.  See the link below for how to prepare a prior year return using TurboTax.  You will  need to purchase a cd/download version of the software for 2017 to prepare a 2017 return.

https://ttlc.intuit.com/replies/3301770