Use this free HST calculator for any Canadian province that uses the Harmonized Sales Tax. It also works as a reverse HST calculator.
Select a province, then enter any value you know: the HST amount, the price including HST, or the price before HST. The other values will be calculated instantly.
Current HST rates are listed below the HST calculator.
HST rates
| Province | HST Rate | Federal Part | Provincial Part |
|---|---|---|---|
| New Brunswick | 15% | 5% | 10% |
| Newfoundland and Labrador | 15% | 5% | 10% |
| Nova Scotia | 14% | 5% | 9% |
| Ontario | 13% | 5% | 8% |
| Prince Edward Island | 15% | 5% | 10% |
Data source: Canada Revenue Agency.
Rates verified August 19, 2026.
How to calculate HST
To calculate HST from a price before tax:
HST = Price before tax × HST rate
Price including HST = Price before tax + HST
For example, using Ontario’s 13% HST rate:
- Price before HST: $100.00
- HST: $100 × 13% = $13.00
- Price including HST: $113.00
To calculate the price before HST from a tax-inclusive total:
Price before HST = Price including HST ÷ (1 + HST rate)
For example, $113 ÷ 1.13 = $100.00. The HST included in the total is $113 − $100 = $13.00.
History of HST implementation in Canada
In 1997 Harmonized Sales Tax (HST) was introduced in three provinces – New Brunswick, Newfoundland and Labrador, and Nova Scotia.
In 2010 HST was implemented in Ontario and British Columbia.
In 2013 Prince Edward Island harmonized its PST (Provincial Sales Tax) with the GST (Goods and Services Tax) to implement the HST. But British Columbia replaced HST back to GST/PST.
On July 1, 2016, the HST rate increased from 13% to 15% in New Brunswick and Newfoundland and Labrador.
From 1st of October, 2016 Prince Edward Island HST rate was increased from 14% to 15%.
Five Canadian provinces currently use the Harmonized Sales Tax: New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario and Prince Edward Island.
GST/HST registration
Starting or operating a business? Read our GST/HST registration guide to learn when registration is required, how the $30,000 small-supplier threshold works, and how to register with the CRA.
Other Canadian calculators
GST/PST Calculators
HST updates and historical notices
- CRA deferred GST/HST tax remittances and payments (COVID-19 Measures)CRA will allow all businesses to defer until the end of June 2020 any GST/HST payments or remittances that become owing on or after March 27, 2020, and before June 2020.
- On 1st of October, 2016 HST was increased in PEIFrom 1st of October 2016 Province of Prince Edward Island increased the provincial component of the harmonized sales tax (HST). HST rate increased from 14% to …
- HST rate increased in NB and NLFrom 1st of July 2016 HST rate in New Brunswick and Newfoundland and Labrador increased from 13% to …
- Fixed cents entry problemThanks to our users who noticed HST Calculator was not accepting cents while entering any amount and all numbers were rounded to integer amount. It is fixed now.
Comments are welcome for calculator feedback, bug reports, and feature suggestions. We cannot answer questions about individual tax situations or provide business, accounting, or legal advice.
Over the years I have used many online HST Calculators when it came time to do my books. Some were easy others were complicated…But this one is simple, easy to use And gives you both answers…if you have receipts with or without the HST included!! I love this feature!! Great job!!
Thank you, Sharelynne, for your feedback
Why does Quebec not appear? no longer a part of Canada?
Hi Tony,
Quebec is still part of Canada, but they don’t charge HST. Check GST Calculator https://gstcalculator.ca/ instead.
PEI’s HST increased on Oct. 1, 2016 from 14 to 15 per cent.
Thank you Andrew. We updated our calculator.
I am trying to figure out what amount of HST was paid to me on my commission. My contractor just sent me the total amount with HST in it. I need for income tax purposes to break the HST out as I am self employed.
Hi Jeannie,
All you need to do – enter your amount into third field “Price including HST” and other values will be populated automatically and you will see what amount is without HST
Hi i order package online and it cost 58US $ just heard i jave to pay import duty charges on it its 4 lipsticks how much they are gona charge me for handling mean how much is duty charges thanks
Why am I unable to use a decimal?
Sarah, please use dot as decimal separator but not a comma.
I.e. enter 10.45, but not 10,45
Hi Sara,
the issue should be fixed by now. Let us know if you still experience any problems.
Thanks for this calculator – simple and quick to use. A HUGE timesaver. 🙂
You are welcome!
This calculator is very helpful and accurate and secondly the operating management is very concerned and reply fast.
Thank you Zia.
No decimal point to put in accurate figures! Please remedy quickly!!! Thanks. Love this tool:)
It was fixed.