We have many customers in Canada, and supporting Canadian taxes are not an issue . You would set up taxes in Setup, Taxes . Create tax like GST, HST, PST. To group all the taxes applicable to a province, you would create a tax code that allows you to group multiple taxes together. For example, you can create a tax code called BC Taxes and include GST and PST in it. You can set up the default tax code to apply at the customer level and also set up the default tax code by product.