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Calculate Gst Ontario

Reviewed by Calculator Editorial Team

Calculating GST in Ontario is essential for businesses and consumers to understand their tax obligations and final prices. This guide explains how to compute the Goods and Services Tax (GST) in Ontario, including the Harmonized Sales Tax (HST) and Provincial Sales Tax (PST) components.

How to Calculate GST Ontario

The Goods and Services Tax (GST) is a federal tax in Canada. In Ontario, the GST is combined with the Provincial Sales Tax (PST) to form the Harmonized Sales Tax (HST). The current rates as of 2023 are:

  • GST: 5%
  • PST: 8%
  • HST: 13% (GST + PST)

GST Calculation Formula

To calculate the GST amount:

GST Amount = Price × GST Rate

For HST in Ontario:

HST Amount = Price × HST Rate (13%)

Total Price Including Tax = Price + HST Amount

Step-by-Step Calculation

  1. Determine the pre-tax price of the product or service.
  2. Multiply the price by the HST rate (13%) to calculate the tax amount.
  3. Add the tax amount to the original price to get the total price.

Example: If an item costs $100 before tax, the HST would be $13, making the total price $113.

GST vs HST Ontario

The key difference between GST and HST in Ontario is that HST is a combined tax rate that includes both the federal GST and the provincial PST. This means that when you see a price with HST included, it already accounts for both taxes.

Tax Type Rate Applies To
GST 5% All goods and services in Canada
PST 8% Goods and services in Ontario
HST 13% Goods and services in Ontario

For businesses, understanding whether to charge GST or HST is crucial. In Ontario, most businesses charge HST, which combines both taxes. However, some businesses may charge only GST if they are not registered for the PST.

Common GST Calculation Scenarios

Here are some common scenarios where calculating GST in Ontario is important:

1. Purchasing Goods

When buying goods in Ontario, the price displayed typically includes HST. To find the pre-tax price, you can reverse-calculate:

Pre-Tax Price = Total Price / (1 + HST Rate)

2. Selling Goods or Services

Businesses need to calculate HST on their sales. The formula is:

HST Amount = Sale Amount × 0.13

3. Importing Goods

When importing goods into Ontario, the GST is calculated on the cost of the goods. The PST is then added to the GST to get the total tax.

Note: Tax rates can change, so it's important to verify the current rates before making calculations.

FAQ

What is the current GST rate in Ontario?
The current HST rate in Ontario is 13%, which includes a 5% GST and an 8% PST.
Do I need to pay GST if I'm not registered for PST?
Yes, all businesses in Ontario must register for the HST, which includes both GST and PST. However, some businesses may only be required to collect GST if they are not registered for the PST.
How do I calculate GST on a refund?
When issuing a refund, you should calculate the GST based on the original invoice amount, not the refund amount. The refund should include the proportionate GST.
Are there any exemptions to GST in Ontario?
Yes, certain goods and services are exempt from GST, such as basic groceries, prescription drugs, and medical services. Check the Canada Revenue Agency website for the most up-to-date list of exemptions.
How often do GST rates change?
GST rates are set by the federal government and typically remain stable. However, provincial sales taxes can change more frequently. It's a good practice to verify the current rates before making calculations.