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
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All toolsUnderstanding GST and QST in Quebec without surprises
Zero-rated items (basic groceries, prescription drugs), invoice breakdowns, and tax credit refunds.
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 single most useful habit upon arriving in Quebec is mentally adding ~15% to displayed prices. Tag prices are almost always pre-tax.