GST and QST tax calculator
Add GST (5%) and QST (9.975%) to a price, or run it in reverse to find the pre-tax amount. To understand how the taxes work, read the understanding GST and QST guide.
- Before tax
- $100.00
- GST (5%)
- $5.00
- QST (9.975%)
- $9.98
- Total taxes
- $14.98
Total with tax
$114.98
Total taxes
$14.98
Author's note: the single most useful habit upon arriving in Quebec is mentally adding ~15% to displayed prices. Tag prices are almost always pre-tax.
What this calculator includes
- Add GST (5%) and QST (9.975%) to a pre-tax price
- Find the pre-tax price from a tax-included total
- The GST and QST amounts shown separately
- The combined rate of 14.975%
Sources and references
| Revenu Québec — GST/HST and QST rates | revenuquebec.ca |
| Canada Revenue Agency — GST/HST | canada.ca |
Rates shown are those in force for 2026. Some products and services are zero-rated or exempt: this calculator applies the full rate.
Keep going
What to do next
Three useful next steps:
Understanding GST and QST in Quebec
GST and QST explained: why the sticker price is never the price you pay in Quebec, the rates, what is taxed and how to calculate the total.
6 min · Audio · PDFNet salary calculator
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Understanding Your Pay Stub in Quebec
Decoding your pay stub: gross, net, federal and provincial deductions.
4 min · Audio · PDFFrequently Asked Questions
Your questions about this tool
Answers to the questions readers ask most often about this calculator — what it computes, the figures used, and how to use it.
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