Currently, TurboTax software doesn’t do GST/HST returns. You would have to fill out and submit one through the Canada Revenue Agency (CRA) website. You can do it through your business account with the CRA. This CRA page has instructions on how to prepare your GST/HST return: https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/rc4022/general-info...
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