Yes, tax charges are based on applicable federal, state, provincial, and harmonized sales tax rates based on the delivery address associated with your order.
If you make a purchase from Canada, you agree that you are the Importer of Record for all products shipped to you and are ultimately the party responsible for paying any customs duties or other fees and taxes associated with products crossing the border into Canada.
In the event that there are issues with taxes and duty charges, please contact customer care.