Go to System Utilities – Data Entry tab – Add/Edit Country Name & Sales tax spec. Click the Add button and enter the country name (i.e. Canada) and code (i.e. CAN). Now, go to Add/Edit State Name & Sales tax spec. Click the Add button and enter the State name (i.e. Quebec) the Postal Code (i.e. Que) and the Country code (i.e. CAN). Finally, go to Add/Edit City Name & Sales tax spec. Click the Add button and enter the city name (i.e. Ontario), the state (i.e. Quebec) and the country (i.e. Canada).