Can Turbotax canada 2020 or 2021 support non-resident tax filing ? I am getting this error "Whoops! We hit a snag loading your data. Please try again."

Yes, TurboTax Canada 2020 or 2021 supports Non-Resident Tax filing. 

 

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tried it many times, doesn't work

If you are still not able to resolve this issue, please contact our phone support team at 1-888-829-8608 for more help.

Thank you for using TurboTax.