Quebec Tax Calculator
Enter an amount and instantly calculate Quebec GST, QST, and the total with tax. Simple, fast, and made for Quebec.
GST 5%
QST 9.975%
Combined 14.975%
In Quebec, the GST is 5% and the QST is 9.975%. The combined total is generally 14.975% on taxable goods and services. The QST is calculated on the selling price before taxes, not on the GST.
Last updated: 2026
How to calculate Quebec sales tax
To add tax, multiply the amount before tax by 5% for the GST and by 9.975% for the QST, then add both to the original amount. To remove tax, divide the tax-included total by 1.14975 to find the amount before tax.
Example on $100
On $100.00: the GST is $5.00, the QST is $9.98, and the total with tax is $114.98.
Add or remove tax
Choose “Add tax” to start from a price before tax. Choose “Remove tax” if your price already includes GST and QST. The QST is calculated on the price before taxes, not on the GST.
Frequently asked questions
What is the sales tax in Quebec?
In Quebec, the GST is 5% and the QST is 9.975%, for a combined rate of generally 14.975% on taxable goods and services.
How do I calculate GST and QST in Quebec?
Multiply the amount before tax by 5% for the GST, then by 9.975% for the QST. Add the amount before tax, the GST and the QST together to get the total.
How do I remove tax from a price in Quebec?
Divide the tax-included price by 1.14975 to get the approximate amount before tax. The calculator then shows the GST and QST separately.
Is the QST calculated on the GST?
No. The QST is calculated on the selling price before taxes, not on the amount including the GST.