Ontario HST Calculator 2026: Add or Remove 13% HST
Free Ontario HST calculator. Add 13% HST to a price, take HST out of a total, or work out how much HST your business owes or is due back. Ontario's 13% HST is the 5% federal GST plus the 8% provincial portion. Built by a Scarborough tax and accounting firm for Toronto and GTA businesses.
Enter an amount to see your result.
- Price before HST
- $0.00
- HST (13%)
- $0.00
- Total including HST
- $0.00
See the federal and provincial split
- Federal part (5% GST)
- $0.00
- Provincial part (8%)
- $0.00
Amounts are rounded to the cent. Invoices and the CRA may round each line slightly differently.
Let us handle your HST
We register you, file your returns and make sure every credit is claimed. GST/HST filing is quoted case by case, in writing, before we start.
CRA-authorized electronic filer · English, Urdu and Punjabi · Scarborough office
Enter your sales and expenses to see your result.
- HST collected on sales (13%)
- $0
- Input tax credits on expenses (13%)
- $0
- Input tax credits on capital purchases
- $0
- Net tax (collected minus credits)
- $0
Quick method comparison
What this estimate leaves out
If your credits are larger than the HST you collected, the result is a refund. This is an estimate. It does not include rebates, adjustments, instalments or prior balances, and some businesses cannot use the quick method.
Owe HST? Let us file it correctly
A wrong HST return can mean missed refunds or a notice from the CRA. We file your returns and help you choose between the regular and quick methods. Fee quoted in writing before any work begins.
CRA-authorized electronic filer · English, Urdu and Punjabi · Scarborough office
HST help for Toronto and GTA businesses
Registration
We help you register for GST/HST and open your CRA accounts, so you start charging HST correctly from day one.
Returns and filing
We prepare and file your monthly, quarterly or annual HST returns and make sure your input tax credits are claimed.
Books that match
With monthly bookkeeping, your HST numbers are ready before every filing deadline.
GST/HST filing is quoted case by case, in writing, before we start. See our GST/HST registration and filing service.
How to calculate HST in Ontario
| You want | Calculation | Example |
|---|---|---|
| Add HST to a price | Price × 1.13 | $1,000 × 1.13 = $1,130 |
| HST amount on a price | Price × 0.13 | $1,000 × 0.13 = $130 |
| Remove HST from a total | Total ÷ 1.13 | $1,130 ÷ 1.13 = $1,000 |
| HST inside a total | Total × 13 ÷ 113 | $1,130 × 13 ÷ 113 = $130 |
Ontario HST questions
What is the HST rate in Ontario?
The HST rate in Ontario is 13%. It combines the 5% federal GST with an 8% provincial portion, and businesses collect it as a single tax.
How do I calculate HST from a total?
Divide the total by 1.13 to get the price before HST. The HST is the total minus that price. For a $565 total, the price before HST is $500 and the HST is $65.
Do I need to register for HST?
You must register once your taxable revenues pass $30,000, either in a single calendar quarter or over the last four consecutive calendar quarters. Below that, registration is optional, and it lets you claim input tax credits on business purchases.
What are input tax credits?
Input tax credits let a registered business recover the HST it paid on eligible business purchases. You subtract them from the HST you collected, and if the credits are larger, the CRA owes you a refund.
What is the quick method for HST?
The quick method lets you remit a set percentage of your sales including HST instead of claiming credits on expenses. For Ontario the rates are 8.8% for services and 4.4% for goods for resale, with a 1% credit on the first $30,000 of eligible sales each year. Your sales including HST must be $400,000 or less, and you must stay on the method for at least a year.
More tools and services for Ontario businesses
GST/HST registration and filing
We register your business and prepare your returns. Quoted case by case, in writing.
Corporate tax calculator for Ontario
Estimate federal and Ontario corporate tax, with the 2026 small business rate.
Bookkeeping in Toronto
Monthly books and reports, so your HST figures are ready when a return is due.
Talk to our Scarborough office
Tell us what you need and we will quote it before we start. Call us, message us on WhatsApp, or visit the office. We also file remotely for businesses across Canada except Quebec.
Information on this website is general in nature and is not tax, legal or financial advice for your particular situation. Calculator results are estimates only. Refunds and assessment outcomes are determined by the Canada Revenue Agency.
Ready to Get Started?
Tell us what you need and we’ll get back to you. Prefer to talk? Call us – at our Scarborough office or entirely online.