How to Calculate GST and HST in Canada
Understand the basic process of adding GST or HST to a price.
Try GST / HST Calculator →GST and HST calculations
The tax amount is generally calculated by multiplying the pre-tax price by the applicable tax rate. The final total is the original price plus that tax amount.
Rates and tax treatment can vary by province, transaction, and type of supply, so a general calculator should not replace official tax guidance.
Use the appropriate rate
Choose the rate applicable to the transaction and location, enter the price, and calculate the tax and total.
For business accounting or unusual transactions, verify the current rules with the Canada Revenue Agency or a qualified professional.
Keep records
Businesses may need invoices and transaction records showing applicable taxes. Record-keeping requirements are separate from simply calculating the amount.
Ready to try it?
Use the free ConvertGeine GST / HST Calculator tool directly from your browser.
Open GST / HST Calculator →Frequently Asked Questions
Is the GST/HST rate the same everywhere in Canada?
No. Applicable sales tax structures and rates can differ by province and territory.
Can this replace professional tax advice?
No. A calculator provides arithmetic; official guidance should be used for tax obligations and unusual transactions.
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