Canada Sales Tax Calculator (GST/HST)
GST, HST and PST on a price in any province, or the price before tax.
Good to know. Quebec’s QST is 9.975%, which is why its receipts end in such odd cents.
How it works
In plain words
Both the GST and the provincial tax are charged on the price before tax, so they add up to one rate. To add tax, multiply the price by 1 plus that rate. To find the price before tax, divide the total by it.
The formula
rate = HST, or GST + PST total = price × (1 + rate ÷ 100) price = total ÷ (1 + rate ÷ 100)
Worked example
A 100 purchase in Quebec: 5.00 GST and 9.98 QST (9.975%), so the tax is 14.98 and the total 114.98.
Sources
- Canada Revenue Agency, GST/HST rates
- Revenu Québec, QST rate 9.975%.
Sources checked September 29, 2026. 6 automated tests check its answers on every change.
About the Canada sales tax calculator (GST/HST)
Every purchase in Canada carries the federal 5% goods and services tax (GST). What the provinces add is where it differs. Ontario and the four Atlantic provinces combine both into one harmonized sales tax (HST) of 13–15%. British Columbia, Manitoba, Saskatchewan and Quebec charge their own tax next to the GST. Alberta and the three territories add nothing.
Pick a province to see each tax on its own line, the way it appears on a receipt. Nova Scotia’s HST fell to 14% in April 2025; the rates here are those in force in 2026.
To work back from a total that includes tax, choose “Find the price before tax”. Divide, don’t subtract: in Ontario, a 113 total was 100 before its 13% HST, and the tax is 13, not 14.69.
Some things are taxed less or not at all: basic groceries, prescription drugs and many medical devices are zero-rated for GST/HST, and provinces exempt their own lists, such as children’s clothing in some. Businesses charge the rate of the province where the buyer receives the goods.
Questions people ask
What is the HST in Ontario?
13%: the 5% GST and an 8% provincial part, charged as one tax.
Which provinces charge HST?
Ontario (13%), Nova Scotia (14%), and New Brunswick, Newfoundland and Labrador and Prince Edward Island (15% each).
Which province has the lowest sales tax?
Alberta, with only the 5% GST, the same as Yukon, the Northwest Territories and Nunavut.
How do I remove HST from a price?
Divide by 1 plus the rate. In Ontario, divide by 1.13: a 113 total was 100 before tax.