NZXT is legally obligated to charge the appropriate tax for your purchase based on the delivery address and not the billing address. If you would like to get an estimate of the tax that could be charged for your system please head to Avalara's Tax Calculator.
For Canadian customers, taxes, and VATs if applicable are determined by your local customs agency. NZXT is not responsible for any taxes, VATs, and fees incurred during importation. Importation fees such as those are your legal responsibility to your country for the importation of goods.