Free GST/QST Calculator for Canada

Understanding Canadian Sales Taxes

The GST/QST calculator is a comprehensive tool for determining the applicable sales taxes in any Canadian province or territory. It handles the Goods and Services Tax (GST), the Quebec Sales Tax (QST), Provincial Sales Tax (PST), and the Harmonized Sales Tax (HST) based on your selected region. Whether you need a GST HST calculator Canada or a dedicated Quebec sales tax calculator, this tool covers the entire country.

Key Tax Types

• GST (Goods and Services Tax): A federal tax levied at a flat rate of 5% across all provinces and territories. It applies to most goods and services, such as electronics, clothing, and dining. There are some zero‑rated items, notably basic groceries, prescription drugs, and certain medical devices, which are exempt from GST.
• PST (Provincial Sales Tax): A provincial tax whose rate varies by province. Some regions, including Alberta, Nunavut, the Northwest Territories, and Yukon, do not levy a PST. Common PST‑applicable items include gasoline, alcohol, and tobacco. PST is administered separately from the federal GST.
• QST (Quebec Sales Tax): Quebec’s specific provincial tax, currently set at 9.975%. It applies to purchases like clothing, vehicles, hotel stays, and food products. In Quebec, basic foods, prescription drugs, and educational services are zero‑rated for both GST and QST.
• HST (Harmonized Sales Tax): A blended tax that combines the GST with the PST, simplifying business taxation. Five provinces have adopted HST: Prince Edward Island (15%), New Brunswick (15%), Nova Scotia (15%), Ontario (13%), and Newfoundland and Labrador (15%). HST covers expenses such as home renovations, car repairs, and legal fees. Businesses in HST provinces only remit a single tax, streamlining compliance.

Provincial and Territorial Sales Tax Rates

The table below summarizes the current rates for each jurisdiction. Use it as a quick reference for your sales tax calculator by province Canada needs.

Province / Territory	GST	PST	QST	HST
Alberta	5%	–	–	–
British Columbia	5%	7%	–	–
Prince Edward Island	5%	–	–	15%
Manitoba	5%	7%	–	–
New Brunswick	5%	–	–	15%
Nova Scotia	5%	–	–	15%
Nunavut	5%	–	–	–
Ontario	5%	–	–	13%
Quebec	5%	–	9.975%	–
Saskatchewan	5%	6%	–	–
Newfoundland and Labrador	5%	–	–	15%
Northwest Territories	5%	–	–	–
Yukon	5%	–	–	–

Note that the PST column applies only to provinces that enforce a separate provincial tax; for HST provinces, the PST is included in the HST rate.

Step‑by‑Step Example: GST and QST Calculation

Imagine you live in Quebec and you want to buy a suit priced at $150 before taxes. In Quebec, you must pay both GST (5%) and QST (9.975%). The total tax amount can be calculated as follows:

$$\begin{aligned} \text{GST amount} &= 150 \times 5\% = 150 \times 0.05 = 7.50 \\ \text{QST amount} &= 150 \times 9.975\% = 150 \times 0.09975 = 14.9625 \approx 14.96 \\ \text{Total after tax} &= 150 + 7.50 + 14.96 = 172.46 \end{aligned}$$

Thus, you will pay $172.46 at the register. This is essentially a percentage increase calculation using the combined tax rate of 14.975% (5% + 9.975%).

For a product in Ontario where HST is 13%, a $200 item before tax would cost$200 \times 1.13 = 226.00$ after tax.

How to Use the Canadian Sales Tax Calculator

The Canada GST PST calculator is straightforward in its operation:

1. Select the province or territory – the tool automatically applies the correct combination of taxes (GST, PST, QST, or HST) according to the jurisdiction.
2. Enter the amount – you can input either the pre‑tax amount for a forward calculation or the after‑tax amount for a reverse calculation.
3. Get the result – the calculator displays the applicable taxes and the total after tax (or the pre‑tax amount and taxes paid in reverse mode).

Reverse Calculation Details

In reverse mode, the tool uses the formula:

$$\text{Pre‑tax amount} = \frac{\text{After‑tax amount}}{1 + \text{combined tax rate}}$$

For Quebec, the combined rate is $0.05 + 0.09975 = 0.14975$. So if you paid $200 after tax, the pre‑tax price is$200 / 1.14975 \approx 173.93$, with GST of$8.70 and QST of $17.37.

Practical Tips and Considerations

• Tax‑exempt items: As mentioned, basic groceries, prescription drugs, health‑care services, and educational services are zero‑rated, meaning no GST or QST is charged. However, alcohol, soft drinks, and snack foods sold in vending machines are generally taxable.
• 2026 Planning: The rates shown are correct as of the current year; for Canada tax calculator 2026 projections, assume the same structure but verify any legislative updates.
• Business use: If you are invoicing clients across provinces, this HST PST GST tax calculator helps you apply the correct rate and avoid under‑ or over‑charging tax.

This tool effectively combines a GST/PST calculator, HST tax calculator, and reverse GST QST calculator into one interface, making it an essential resource for anyone dealing with Canadian sales taxes.