1. What is Quebec Sales Tax?

Quebec has a combined sales tax system consisting of the federal Goods and Services Tax (GST) and the provincial Quebec Sales Tax (QST). The GST is 5% and the QST is 9.975%, applied sequentially.

2. How Does the Calculator Work?

The calculator uses the Quebec sales tax formula:

Where:

• Pre-tax Amount — The original price before taxes
• 1.05 — Represents the 5% GST
• 1.09975 — Represents the 9.975% QST (applied after GST)

3. Quebec Tax Rates

Details: Quebec has the following tax rates:

• GST (Goods and Services Tax): 5% federal tax
• QST (Quebec Sales Tax): 9.975% provincial tax

The QST is applied to the price after GST has been added.

4. Using the Calculator

Tips: Enter the pre-tax amount in Canadian dollars. The calculator will compute both taxes and the total amount including taxes.

5. Frequently Asked Questions (FAQ)

Q1: Why is QST applied after GST?
A: In Quebec, the provincial QST is calculated on the price after the federal GST has been added, making it a tax on tax.

Q2: Are there any exemptions?
A: Yes, certain items like basic groceries, prescription drugs, and some services are exempt from one or both taxes.

Q3: Is the combined rate simply 14.975%?
A: No, because QST is applied after GST, the effective combined rate is slightly higher (15.5%).

Q4: Do tourists pay these taxes?
A: Yes, but non-residents may be eligible for GST/HST rebates on certain goods when exported.

Q5: How does this compare to other provinces?
A: Quebec is unique in applying provincial tax after federal tax. Most provinces have a harmonized sales tax (HST) with a single rate.