Free tool · Canada

GST/HST calculator

Add Canadian sales tax to a price, or take it out of a total, for any province or territory: GST, HST, and PST, RST or QST where the province charges its own. Rates checked 21 October 2026 against the CRA and the provinces.

Calculate

The amount is

Fill in the form and select Calculate. The result appears here and the page address keeps it, so you can share or bookmark it.

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Rates by province and territory

Run it with curl

curl "https://app.superbooks.io/api/tools/gst-hst-calculator?province=QC&amount=100&mode=add"

API reference and limits

Questions

What is the difference between GST, HST, PST and QST?
GST is the 5% federal sales tax. Ontario, Nova Scotia, New Brunswick, Newfoundland and Labrador and Prince Edward Island combine it with their own tax into one HST. British Columbia and Saskatchewan charge PST and Manitoba RST on top of GST, and Quebec charges QST. Alberta and the three territories charge GST only.
How do I take GST/HST out of a total?
Divide the total by one plus the combined rate: in Ontario, divide by 1.13 to get the price before HST. Choose “including tax” in the calculator and it does this, with each tax line rounded to the cent.
Is QST charged on top of GST?
No. Since 2013 the 9.975% QST is calculated on the price before GST, the same base as the 5% GST, so the two add up to 14.975%.
Where do these rates come from?
GST and HST rates from the Canada Revenue Agency; PST, RST and QST from British Columbia, Manitoba, Saskatchewan and Revenu Québec. Each province page links its sources, checked 21 October 2026.