Which taxes does the Ontario calculator include?

Ontario charges 13% HST, a single tax that combines the 5% federal GST with Ontario’s 8% provincial portion. The calculator applies the combined 13% to the amount you enter.

How do I calculate sales tax in Ontario?

Multiply the price by 13% and round to the nearest cent. A $100.00 sale carries $13.00 in HST, for a total of $113.00.

How do I back HST out of a price that includes it?

Divide the total by 1 plus the rate. A $113.00 total in Ontario is $113.00 ÷ 1.13 = $100.00 before tax, so the tax is $13.00.

Do I charge Ontario’s rate on sales from another province?

GST and HST follow the place of supply, which is generally the province where the buyer receives the goods or services, so a sale delivered to Ontario is taxed at Ontario’s rate. British Columbia, Saskatchewan and Manitoba register out-of-province sellers for their provincial sales tax under their own rules, and Quebec administers the QST.

13% HST

Ontario Sales Tax Calculator

Ontario charges 13% HST, a single tax that combines the 5% federal GST with Ontario’s 8% provincial portion.

Results

Ontario (ON)

13%

Combined sales tax rate · Rates as of September 2026

HST (harmonized): 13%

Calculate tax on a sale

Sale amount

Enter an amount to see the tax and total.

This is an estimate based on location alone. The tax you owe also depends on what you sell, who you sell to and the exact delivery address. If you intend to rely on these rates, use the Kintsugi platform (opens in a new tab).

How the Ontario calculator works

Ontario has one rate everywhere, 13%, so the calculator opens on it. Enter an amount and it multiplies by the rate and rounds the tax to the nearest cent. Rates were last checked in September 2026.

Read the Ontario sales tax guide for what’s taxable, registration and filing. For worked examples across provinces, see how to calculate GST in Canada, and for another province, the Canada sales tax calculator.

Frequently Asked Questions

Using the calculator

Ready to automate your sales tax?

Book a Demo Sign Up