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GST/HST Calculator

How to Use the GST/HST Calculator

Enter an amount and select your province or territory. The calculator instantly shows all applicable taxes including GST (federal), PST/RST (provincial), HST (harmonized), and QST (Quebec-specific). Choose between two modes: calculate tax on a pre-tax amount, or reverse-calculate to find the pre-tax amount from a total that includes tax.

Canada has a complex multi-level tax system varying by province. This tool handles all 13 provinces and territories correctly, including HST provinces (ON, NB, NL, NS, PE), combined GST+PST regions (BC, MB, SK), Quebec's unique QST system, and GST-only territories (AB, NT, NU, YT). Perfect for businesses, accountants, and anyone needing accurate Canadian sales tax calculations.

Frequently Asked Questions

What is the difference between GST, HST, PST, and QST?

GST is the federal Goods and Services Tax at 5%. HST combines federal and provincial taxes into one rate (13-15%). PST/RST are provincial-only taxes (6-7%). QST is Quebec's 9.975% provincial sales tax.

Which provinces have HST?

Ontario (13%), New Brunswick, Newfoundland & Labrador, Nova Scotia, and Prince Edward Island all use HST at 15%.

How do I calculate the pre-tax amount from a total?

Select "Tax Included" mode, enter the total price, and the calculator reverse-calculates to show the pre-tax amount and tax breakdown.

Are these rates current for 2025-2026?

Yes, these reflect current 2025-2026 Canadian tax rates. Always verify with local tax authorities for the most up-to-date information.

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