Free QST Calculator — Quebec
Calculate QST (TVQ) at 9.975% and GST (TPS) at 5% for any amount in Quebec. Add tax to a pre-tax amount or extract tax from a tax-inclusive total.
How QST works in Quebec
In Quebec, two sales taxes apply: the federal GST (TPS) at 5% and the provincial QST (TVQ) at 9.975%. Both are calculated on the pre-tax amount (the QST is not charged on top of the GST). The combined rate is 14.975%.
For example, on a $100 pre-tax amount: GST = $5.00, QST = $9.98, total = $114.98. When extracting from a tax-inclusive total of $114.98: pre-tax = $100, GST = $5.00, QST = $9.98.
Frequently asked questions
What is the QST rate in Quebec?
The QST (Quebec Sales Tax / TVQ) is 9.975%. Combined with the 5% GST, the total sales tax in Quebec is 14.975%.
How is QST different from HST?
QST is a separate provincial tax charged in Quebec on top of the GST. HST is a harmonized tax that combines the federal GST and provincial tax into a single rate, used in Ontario, New Brunswick, Newfoundland and Labrador, Nova Scotia, and PEI.
How do I calculate QST?
To calculate QST, multiply the pre-tax amount by 9.975%. For example, $100 × 9.975% = $9.98 QST. The GST (5%) is calculated on the same pre-tax amount: $100 × 5% = $5. Total with both taxes: $114.98.
Does Hengo calculate QST automatically?
Yes. Hengo calculates QST (9.975%) and GST (5%) separately on every invoice and expense for Quebec workspaces. It displays bilingual labels (GST/TPS and QST/TVQ) and generates separate returns for the CRA and Revenu Québec.
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