Level 1
This widget could not be displayed.

After you file

 
Level 6
This widget could not be displayed.

After you file

Yes, you can. You can upload your completed 2018 tax file created by the desktop program into TurboTax Online next year.

Please read this answer from TurboTaxElisabethB2:

https://ttlc.intuit.com/replies/6246284

Level 1
This widget could not be displayed.

After you file

Is it possible to upload the 2018 return now, or must I wait until starting the 2019 return next year?
Level 6
This widget could not be displayed.

After you file

No, you cannot. You can only upload a completed return, not a return in progress. There is no point in uploading a completed 2018 tax file into the 2018 TurboTax online.
Level 1
This widget could not be displayed.

After you file

Thank you