Unless your accountant used TurboTax Cd/Download
and can provide you with the .tt17 file for your return, you’ll most likely have to
manually input your information from 2017. However, if you have My Account
setup with the CRA, you can the Auto-Fill feature to get your t-slips imported
into the software.
Here is how to use the Auto-fill My Return service
in TurboTax Online: https://turbotax.community.intuit.ca/replies/2994684
Here’s some information on transferring information
from year to year: https://turbotax.community.intuit.ca/replies/2647786