GSTcalc 1.4 - Welcome to GSTcalc, the most popular Canadian GST calculator for the Newton MessagePad. GSTcalc is a simple tool for calculating the Canadian Goods & Services tax, as well as the provincial sales tax for the different provinces. Here are the percentages used for each province - Alberta, North West Territories and Yukon 0%, British Columbia & Manitoba 7%, New Brunswick & Nova Scotia 11%, Newfoundland 12%, PEI 10%, Ontario 8% Quebec (P) 6.58% (for products and services), and Saskatchewan 9%. GSTcalc calculates on rounded numbers, which is the right way to calculate taxes (if you donÍt do this, you will end up with a 1 cent difference).