Free calculator
HST Calculator Ontario (13%)
Add 13% HST to a price, or take the HST out of a total. Other provinces' HST and GST rates included.
Brampton · Mississauga · GTA · Virtual support across Ontario
Ontario's HST is 13%: 5% federal GST and 8% provincial. To add HST, multiply the price by 1.13. To find the price before HST in a total, divide the total by 1.13. Enter any amount below to do either one.
Add or remove HST
Example figures are filled in. Replace them with your own.
Your estimate
General information using 2026 rates, not tax advice for your situation.
HST formulas
- Add HST: price × 0.13 = HST. Price × 1.13 = total.
- Remove HST from a total: total ÷ 1.13 = price before tax. Total − price = HST included.
- Example: a ,130 invoice from an Ontario supplier contains ,000 of price and 0 of HST.
HST and GST rates by province
- Ontario: 13% HST
- Nova Scotia: 14% HST (from 1 April 2025)
- New Brunswick, Newfoundland and Labrador, Prince Edward Island: 15% HST
- Alberta, the territories and the provinces with their own sales tax: 5% GST. British Columbia, Saskatchewan, Manitoba and Quebec add provincial sales tax separately, which this calculator does not include.
The rate you charge depends on where your customer is, not where your business is. A Brampton business selling to a customer in Halifax generally charges Nova Scotia's 14%. The CRA's GST/HST rates page has the full rules.
Do I have to charge HST?
You must register once your taxable sales are over ,000 in four consecutive calendar quarters, or in a single quarter. Below that you are a small supplier and registration is optional. Once registered, you charge HST on taxable sales, claim input tax credits for the HST you pay on business costs, and file returns monthly, quarterly or yearly. Some small businesses can use the quick method, which works out the remittance as a percentage of sales.
Common questions
How do I calculate 13% HST?
Multiply the price before tax by 0.13 for the HST, or by 1.13 for the total. On 0 the HST is .50 and the total is 2.50.
How do I take HST out of a total?
Divide the total by 1.13 to get the price before tax. On 5 that is 0, so the HST inside it is . Taking 13% off the total gives the wrong answer.
When is my HST return due?
It depends on your filing period. Monthly and quarterly filers file and pay one month after the end of each period. Annual filers generally file three months after the year-end. Sole proprietors with a 31 December year-end have until 15 June to file but must pay by 30 April. Our tax dates page lists them.
Need HST filed for you? See HST returns, or all of our calculators.
General information using 2026 federal and Ontario rates. It is not tax advice for your situation. Wealthy Wave Accounting agrees the scope and fees for any work in writing before it starts.
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