The short answer
HST in Ontario is 13%. It is made of a 5% federal part and an 8% provincial part. A $100 price becomes $113.
Rate checked with the CRA and Ontario on October 31, 2026. For any amount, use the free HST calculator.
What the 13% is made of
HST stands for Harmonized Sales Tax. Effective July 1, 2010, it replaced Ontario's 8% retail sales tax and the 5% federal GST on most goods and services, according to the Government of Ontario. The CRA administers and collects it for Ontario.
You see one tax, not two. The CRA's Guide RC4022 says not to show the federal and provincial parts separately on an invoice.
Ontario HST examples
| Price before tax | HST at 13% | Total |
|---|---|---|
| $50.00 | $6.50 | $56.50 |
| $100.00 | $13.00 | $113.00 |
| $250.00 | $32.50 | $282.50 |
| $1,000.00 | $130.00 | $1,130.00 |
How to calculate HST in Ontario
- To find the tax: multiply the price by 0.13.
- To find the total: multiply the price by 1.13.
- To take the tax out of a total: divide the total by 1.13.
The Ontario HST calculator opens at 13% and does this in both directions. The reverse HST calculator starts from a total.
When 13% does not apply
- Your client or the work is in another province. The rate depends on the place of supply. See GST or HST for the rate by province.
- The sale is zero-rated or exempt. The CRA says a zero-rated supply has a 0% rate throughout Canada. Some services are exempt, such as much private tutoring.
- The item has a rebate. Ontario rebates the 8% provincial part on specific items at the point of sale.
- You are not registered. If you have not registered, you do not charge HST. See how to register for GST/HST, and the GST/HST guide for the $30,000 threshold.
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Setting your prices?
Our pricing guides show what Canadian service businesses charge, service by service. When you have your rate, the free invoice generator turns it into a GST/HST-ready invoice.
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Common questions
How much is HST in Ontario?
13%. It is made of a 5% federal part and an 8% provincial part. On a $100 price, HST is $13 and the total is $113.
How do I calculate HST in Ontario?
Multiply the price before tax by 0.13 to get the HST, or by 1.13 to get the total. The free HST calculator does this for you.
How do I take HST out of a total?
Divide the total by 1.13 to get the price before tax. A $113 total is $100 before tax, with $13 of HST.
Is Ontario HST 13% on everything?
No. Zero-rated supplies have a 0% rate, and some supplies are exempt. Ontario also rebates the 8% provincial part on specific items at the point of sale.
Do I charge 13% to a client outside Ontario?
Not always. The rate depends on the place of supply, which is not always where your business is. See GST or HST for how it works.
Do I have to charge HST in Ontario?
Only if you are registered for GST/HST. If you are a small supplier and have not registered, you do not charge it.
Does Biller work out HST?
Biller invoices can carry a tax rate, and you can set a default rate from your province. You confirm the rate that applies to each sale.
Related guides
- GST or HST: which tax applies in each province
- GST/HST guide for small businesses
- How to register a business in Ontario
- Free blank invoice template
General information, checked on Canada.ca and Ontario.ca on October 31, 2026. It is not tax advice. Rates change, so confirm your situation with the CRA or an accountant.