Quebec Sales Tax Calculator
Most sales in Quebec carry two taxes: the federal GST and the provincial QST. This adds both to a price, so you see the tax and the total.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Both taxes are worked out on the price before tax. Add the two rates together and multiply the price by the combined rate, divided by 100.
The rates are inputs, so you can change them. The opening figures are the GST and QST rates in effect in 2026.
Worked example
A price of $100.00 with GST and QST added comes to $114.98. The two taxes together are $14.98, a combined rate of 14.975%.
Questions
Is QST charged on the GST?
No. QST is worked out on the price before GST is added, so the two taxes are not stacked on each other.
Are all items taxed?
Most goods and services are, but some items, such as certain basic groceries, are taxed at zero. Check the rules for what you are buying.
Why might a receipt show a different total?
Stores round each tax line separately, and some items have their own rules, so a receipt can differ by a cent or two.
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