Canada’s sales tax depends on the province: Ontario and the Atlantic provinces use a harmonized HST, Quebec charges QST alongside GST, British Columbia, Manitoba and Saskatchewan charge provincial sales tax, and Alberta and the territories charge only the 5% GST. Nova Scotia’s HST fell to 14% in April 2025.
How to use the GST/QST Calculator for Canada
- Province or territory
- I want to
- Amount
Results update as you type, and every field accepts the units shown in its menu.
How it works
Choose the province or territory, whether to add or remove tax, and enter the amount.
Tips
- Tax figures here are estimates for planning – your actual tax depends on credits, deductions and local rules.
- Check the tax year and filing status before you rely on a result.
- Use gross (before-tax) figures unless a field asks for take-home pay.
- When in doubt, confirm with the tax authority’s own calculator or a tax professional.
Common mistakes to avoid
- Confusing marginal and effective tax rates.
- Adding sales tax to a price that already includes it.
- Forgetting payroll taxes (Social Security and Medicare) on wages.
Inputs explained
| Field | What to enter |
|---|---|
| Province or territory | Choose one: Alberta (GST 5%), British Columbia (GST 5% + PST 7%), Manitoba (GST 5% + RST 7%), New Brunswick (HST 15%) … |
| I want to | Choose one: Add tax to a price, Remove tax from a tax-inclusive price |
| Amount | Amount in your currency |
What each result means
- Combined rate = 5 + [Provincial part (PST, QST or HST share)]
- GST (5%) = [Amount before tax]×0.05
- PST / QST / provincial HST = [Amount before tax]×[Provincial part (PST, QST or HST share)]÷100
- Total tax = [GST (5%)] + [PST ÷ QST ÷ provincial HST]
- Amount after tax = [Amount before tax] + [Total tax]
Example values
How the main result changes when Amount changes and everything else stays at the example values above:
| Amount | Total tax |
|---|---|
| 50 | 7.49 |
| 75 | 11.23 |
| 100 | 14.98 |
| 125 | 18.72 |
| 150 | 22.46 |
| 200 | 29.95 |
Formula
GST = 5% federallyHST provinces: single combined rate (13–15%)GST + PST/QST provinces: 5% + provincial rate (Quebec 9.975%)Total = price × (1 + combined rate)Worked example
Inputs — Province or territory: Quebec (GST 5% + QST 9.975%); I want to: Add tax to a price; Amount: $100.
Results — Provincial part (PST, QST or HST share) = 9.975 %; Combined rate = 14.975 %; Amount before tax = $100.00; GST (5%) = $5.00; PST / QST / provincial HST = $9.98; Total tax = $14.98; Amount after tax = $114.98.
Frequently asked questions
What is the sales tax in Quebec?
5% GST + 9.975% QST = 14.975%.
Which provinces have HST?
Ontario (13%), Nova Scotia (14%), New Brunswick, Newfoundland and Labrador, and PEI (15%).
Does Alberta have sales tax?
Only the 5% federal GST.
What formula does the GST/QST Calculator for Canada use?
GST = 5% federally.