Your WooCommerce Tax Configuration Is Not Handling Provincial Variation Correctly
WooCommerce's built-in tax engine handles simple cases. It does not handle the complexity of Canadian tax rules well without careful configuration: exempt product categories in certain provinces, the difference between HST-participating provinces and provinces with separate PST, and digital service tax rules that vary from physical goods. A tax plugin built to your specific catalogue and customer geography applies the correct tax to the correct transaction every time.