# Ontario sales tax calculator

> Add or remove Ontario sales tax: 13% HST, 13% in all. Rates checked 21 October 2026 against the CRA and the province. Free.

Canonical page: https://superbooks.io/tools/gst-hst-calculator/ontario/

Ontario charges 13% HST.

## Sources

- GST/HST: Canada Revenue Agency, GST/HST calculator and rates, https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/charge-collect-which-rate/calculator.html, checked 2026-10-21

GET https://app.superbooks.io/api/tools/gst-hst-calculator?province=ON&amount=100

## Questions

### What is the sales tax rate in Ontario?

Ontario charges 13% HST, which combines the federal and provincial parts.

### How do I add sales tax in Ontario?

Multiply the price by 1.13: $100.00 becomes $113.00.

### How do I take sales tax out of a Ontario total?

Divide the total by 1.13. $113.00 including tax is $100.00 before tax.