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
Frequently asked questions
What are the GST and QST rates in Quebec in 2026?
GST (the federal Goods and Services Tax) is 5%. QST (the Quebec Sales Tax) is 9.975%. Combined, they add 14.975% to the pre-tax price.
Is QST calculated on the price including GST?
No. Since 2013, QST is calculated on the pre-tax price, not on the GST-included price. Both taxes apply separately to the same base amount, with no cascading effect.
How do I find the pre-tax price from a total?
Divide the tax-included total by 1.14975. For example, a $114.98 total works back to about $100 before tax. The "Remove tax" mode of this calculator does it automatically.
Is everything taxed?
No. Several essentials are zero-rated or exempt: most basic groceries, prescription drugs, certain health services. A restaurant bill, clothing or electronics, however, are fully taxed.
Is my data saved?
No. The calculation runs entirely in your browser: no information is sent to or stored on our servers.
Related guides
Sources and references
Rates shown are those in force for 2026. Some products and services are zero-rated or exempt: this calculator applies the full rate.
Author's note: the most useful habit to pick up when you arrive in Quebec is to mentally add ~15% to the displayed price. The sticker price is almost always before tax — the surprise at the till fades fast once you expect it.