How do I find the price before tax (reverse calculation)?

To find the base amount before tax, divide the total inclusive price by 1.14975. Our calculator provides a 'Remove Tax' mode for this purpose.

Quebec Sales Tax Calculator

Reliable GST (5%) and QST (9.975%) calculations for the year .

Quebec Sales Tax Tool

Enter Amount (CAD $)

Calculation Mode

Base Price:$0.00

GST (5%):$0.00

QST (9.975%):$0.00

Total Payable:

$0.00

Quebec's Dual-Tax System

In Quebec, consumer transactions are generally subject to two separate taxes: the federal Goods and Services Tax (GST) and the provincial Quebec Sales Tax (QST). Quebec is unique because it manages its provincial tax independently through Revenu Québec.

How to Calculate Quebec Sales Tax Manually

If you prefer manual calculation, here are the formulas used by our tool to get precise results:

To add tax: Base Amount × 1.14975 = Total Price
To find GST only: Base Amount × 0.05 = GST Amount
To find QST only: Base Amount × 0.09975 = QST Amount
To remove tax: Total Amount ÷ 1.14975 = Base Price

Quick Tax Reference Table (14.975%)

Common amounts calculated with the current Quebec tax rates:

Amount	GST (5%)	QST (9.975%)	Total Payable
$10.00	$0.50	$1.00	$11.50
$50.00	$2.50	$4.99	$57.49
$100.00	$5.00	$9.98	$114.98
$500.00	$25.00	$49.88	$574.88
$1,000.00	$50.00	$99.75	$1,149.75

Sales Tax Rates in

The effective combined tax rate in Quebec is 14.975%. Here is the breakdown of the current rates:

Tax Authority	Abbreviation	Rate (%)
Federal (Canada)	GST (TPS)	5%
Provincial (Quebec)	QST (TVQ)	9.975%
Combined Total	Total Tax	14.975%

Real-World Examples

Let's see how the 14.975% tax applies to common purchases in Quebec:

Smartphone ($1,000): You pay $50.00 GST + $99.75 QST = $1,149.75 Total
Consulting Service ($500): You pay $25.00 GST + $49.88 QST = $574.88 Total
Printed Book ($20): Since books are QST-exempt in Quebec, you only pay 5% GST ($1.00) = $21.00 Total

Quebec vs Other Provinces

Quebec has one of the highest combined sales tax rates in Canada. Comparing it with other regions helps businesses understand pricing. For instance, Alberta charges only 5% GST, while Ontario uses a 13% HST.

Who Must Register for GST/QST?

If your business is located in Quebec and your total taxable supplies (sales) exceed $30,000 over four consecutive calendar quarters, you are mandatory required to register with Revenu Québec to collect and remit taxes.

Business Input Tax Credits (ITC & ITR)

For registered business owners, the taxes paid on purchases aren't always a final cost. You can claim Input Tax Credits (ITC) for the GST and Input Tax Refunds (ITR) for the QST portion.

Zero-Rated & Exempt Items

Essential goods are often taxed at 0% to help households:

Basic Groceries: Milk, bread, and vegetables are 0% tax.
Medical Supplies: Most prescription drugs are exempt.
Printed Books: In Quebec, books are exempt from the 9.975% QST.

How to File and Remit Tax

Registered businesses must report their collected GST and QST to Revenu Québec. Most SMEs use the online "My Account" portal provided by the Quebec government for filing.

The Evolution of QST

Historically, QST was calculated on the total price including GST. In 2013, this was simplified. Now, both taxes apply to the base price independently.

Expert Frequently Asked Questions

No. Since 2013, both the 5% GST and the 9.975% QST are calculated directly on the base price.

Printed books are subject to the 5% GST but are exempt from the 9.975% QST in Quebec.

To get the base amount, divide the total price by 1.14975. Our tool does this automatically in "Remove Tax" mode.