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Canadian business tax
GST/HST Calculator
Estimate GST or HST on a sale amount for Canadian invoices, checkout totals, and small business pricing.
Why GST/HST tools matter in Canada
Canadian sellers, freelancers, and buyers often need fast GST/HST estimates for invoices and purchase totals, especially when comparing provinces.
What to check next
Confirm the correct province or territory rate before using the result on a quote, invoice, or purchase estimate.
Who should use this GST/HST calculator
This page is useful for Canadian sellers, freelancers, service providers, and buyers who want a quick estimate for GST or HST on quotes, invoices, and purchase totals.
Frequently asked questions
Does the tax rate change by province?
Yes. Users should enter the rate that matches their province or the transaction they are reviewing.
Can this be used for invoices?
Yes, as a quick estimate. Formal invoicing and filing should still use your final business records and current local rules.
Example calculation
Example: if the subtotal before tax is 140 and the GST/HST rate is 13%, the tax amount is 18.20 and the final total is 158.20.
Related tools
You may also want the VAT Calculator, the GST Calculator Australia, and the GST Calculator NZ.