1. What is Quebec Reverse Sales Tax?

The Quebec Reverse Sales Tax Calculator helps determine the pre-tax amount when you know the total price including GST (5%) and QST (9.975%). This is useful for accounting, expense reporting, and financial planning.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Amount \) — Total amount including taxes (CAD)
• \( 0.05 \) — GST rate (5%)
• \( 0.09975 \) — QST rate (9.975%)

Explanation: The formula works backward from the total amount to calculate the original price before taxes were added.

3. Quebec Sales Tax Rates

Current Rates (2024-2025):

• GST (Goods and Services Tax): 5% federal tax
• QST (Quebec Sales Tax): 9.975% provincial tax
• Combined tax rate: 14.975%

4. Using the Calculator

Tips: Enter the total amount including taxes in Canadian dollars. The calculator will show the pre-tax amount, GST, QST, and total taxes paid.

5. Frequently Asked Questions (FAQ)

Q1: Why is QST 9.975% instead of 9.5%?
A: QST is calculated on the price after GST has been added, making the effective rate 9.975% of the pre-tax amount.

Q2: Are all items subject to both taxes?
A: Most goods and services are taxed with both GST and QST, but some items may be exempt or zero-rated.

Q3: How often do Quebec tax rates change?
A: Tax rates typically remain stable but can change with government budgets. This calculator reflects 2024-2025 rates.

Q4: Can I use this for business accounting?
A: Yes, this calculator is suitable for separating GST and QST from total amounts for accounting purposes.

Q5: Is the QST rate different in other provinces?
A: Yes, other provinces have different provincial sales tax rates and structures (PST, HST).