Sales Tax Calculator

Calculate GST, HST, QST, PST, and US sales tax instantly. Enter a subtotal or reverse-calculate from a total.

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Tax Formula

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Amount

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Tax Formula

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Common Tax Questions

What is the GST rate in Canada? ▾

The federal Goods and Services Tax (GST) rate in Canada is 5%. It applies in all provinces and territories.

What is HST and which provinces use it? ▾

The Harmonized Sales Tax (HST) combines the federal GST with a provincial component. Ontario (13%), Nova Scotia (15%), New Brunswick (15%), Newfoundland and Labrador (15%), and Prince Edward Island (15%) use HST.

How do I calculate QST in Quebec? ▾

In Quebec, you pay both GST (5%) and QST (9.975%). Use the calculator above and select the Quebec QST formula — it will calculate both taxes on your subtotal and show the full breakdown.

How does reverse tax calculation work? ▾

Reverse calculation finds the pre-tax subtotal when you only know the total amount paid. Switch to "Total → Subtotal" mode, enter the grand total, and the calculator will extract the subtotal and tax breakdown.