Hi
Please find below information on the CRA website regarding GST/HST on your expenses.
https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/t4002/t4002-4.html#...
If applicable, while filling expenses on the TurboTax platform, there will be a prompt regarding that.
Hope that helps, please let me know if you need more information.
Thank you
