Ontario HST Calculator
Ontario uses a single 13% Harmonized Sales Tax (HST). Add 13% HST to a price, or back it out of a tax-included total — one rate for the whole province.
Flat-rate estimate. Some goods and services are zero-rated or exempt, and PST/RST have their own exemptions — your actual invoice can differ.
Rates checked against the official CRA table (canada.ca) on July 17, 2026.
The rate here — Ontario
How sales tax works here
Ontario is an HST province: the 5% federal GST and an 8% provincial part combine into one 13% HST that the CRA administers. You charge a single rate and file one GST/HST return — there's no separate Ontario sales tax to track.
You generally register once taxable sales pass $30,000; below that you're a small supplier and it's optional. Basic groceries and many health and financial services are zero-rated or exempt, so a real invoice can differ from a flat 13%.
FAQ
Ontario's provincial part of the HST is 8%, on top of the 5% federal GST — 13% combined. The Atlantic HST provinces set their provincial part higher, which is why theirs reach 14–15%.
Generally once your taxable sales pass $30,000 — measured over a single calendar quarter or the last four consecutive quarters. Under that you're a "small supplier" and registering is optional. The $30,000 counts your worldwide taxable sales and those of anyone you're associated with, not your profit.
Switch the calculator to "Take GST/HST out of a total" and enter the tax-included amount. It divides by one plus the combined rate to find the price before tax, then shows the tax on top.
Registering, filing, or behind on GST/HST?
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