Canada: Sales tax is charged according to the province or territory to which the item is shipped.

Outside Canada: The importer or recipient of the goods is responsible for the payment of duties and taxes.  We do not include such charges on the invoice.  The shipping provider will normally pay the custom and duty taxes to Customs on behalf of the recipient, and will often charge the recipient an advancement fee for providing this service.  In most cases the courier will not release the shipment to the recipient until their charges and any taxes due have been collected.