Yes, you can login to your TurboTax Online account to access last year's return, as long as you used a paid version of TurboTax Online last year.
In the event you didn't, once you purchase the desktop software, you can contact customer support for assistance with getting your prior year files unlocked. You would want to download your .tax file from the Tax Timeline in your account for importing the prior year into TurboTax Desktop to carry forward your information.
Please refer to the instructions below to contact customer support if need be.
https://ttlc.intuit.com/replies/3300041
Submit your question/problem during business hours and
then use the option for Call. You can simply enter "billing"
as your question.
There will be some personal information gathered so we can create a case for
you. A phone number will be provided, specific to your case, to speak
directly with a TurboTax agent.
You can also request support at the link below.
https://support.turbotax.intuit.com/contact/
Note: The Call option will not be available when TurboTax
Support is closed.
