GST + QST on common prices
GST + QST at 14.975% added to common pre-tax prices in Quebec. Each tax is rounded to the cent.
Free tool · Rates as of October 2026
Quebec GST and QST calculator
Add 5% GST and 9.975% QST to a price, or split a 14.975% total back into its parts. Both taxes are calculated on the same pre-tax price.
$
- Subtotal
- $100.00
- GST 5%
- $5.00
- QST 9.975%
- $9.98
- Total
- $114.98
QST is charged on the price before GST, not compounded.
Or pick on the map
- GST only (5%)
- 11 to 13% combined
- 14% or more combined
What is in the 14.975% GST + QST
- GST (federal)
- 5%
- QST (provincial)
- 9.975%
- Combined rate
- 14.975%
QST is calculated on the price before GST, not on the GST-included price, so the combined rate is 14.975%.
| Price before tax | GST (5%) | QST (9.975%) | Total |
|---|---|---|---|
| $10.00 | $0.50 | $1.00 | $11.50 |
| $25.00 | $1.25 | $2.49 | $28.74 |
| $50.00 | $2.50 | $4.99 | $57.49 |
| $100.00 | $5.00 | $9.98 | $114.98 |
| $250.00 | $12.50 | $24.94 | $287.44 |
| $500.00 | $25.00 | $49.87 | $574.87 |
| $1,000.00 | $50.00 | $99.75 | $1,149.75 |
| $2,500.00 | $125.00 | $249.37 | $2,874.37 |
| $5,000.00 | $250.00 | $498.75 | $5,748.75 |
GST + QST included in common totals
Backing GST + QST out of a total: divide by 1.14975 to get the price before tax.
| Total with tax | GST + QST included | Price before tax |
|---|---|---|
| $10.00 | $1.30GST $0.43 + QST $0.87 | $8.70 |
| $25.00 | $3.26GST $1.09 + QST $2.17 | $21.74 |
| $50.00 | $6.51GST $2.17 + QST $4.34 | $43.49 |
| $100.00 | $13.03GST $4.35 + QST $8.68 | $86.97 |
| $250.00 | $32.56GST $10.87 + QST $21.69 | $217.44 |
| $500.00 | $65.12GST $21.74 + QST $43.38 | $434.88 |
| $1,000.00 | $130.25GST $43.49 + QST $86.76 | $869.75 |
| $2,500.00 | $325.61GST $108.72 + QST $216.89 | $2,174.39 |
| $5,000.00 | $651.23GST $217.44 + QST $433.79 | $4,348.77 |
How sales tax works in Quebec
Quebec charges the federal 5% GST and the 9.975% Quebec sales tax (QST), for 14.975% combined. Revenu Québec says that when the taxes are calculated in two steps, both the 5% GST and the 9.975% QST are calculated on the sale price, so QST is never charged on top of GST.
Revenu Québec administers the QST and, in Quebec, generally also administers the GST/HST on the federal government's behalf. So a Quebec business usually files both taxes with Revenu Québec rather than the CRA. Revenu Québec also says the 14.975% combined rate must not appear on the document attesting to the sale.
Who has to register and charge it
As a rule, you must register for both the GST and QST if you carry on commercial activities in Quebec and your worldwide taxable supplies, including those of associates, exceed $30,000 in a calendar quarter or in the four preceding calendar quarters. Our GST/HST registration guide covers the federal steps.
Some businesses must register earlier. Taxi businesses must register for both taxes regardless of sales, and businesses that retail tobacco, fuel or alcoholic beverages, sell or lease new tires, or sell road vehicles must register for the QST even as small suppliers.
Selling to customers outside Quebec
For GST and HST, the CRA's place-of-supply rules tax goods where they are delivered and most services at the customer's address. A Montreal business shipping to Ontario charges 13% HST and no QST, and one billing an Alberta client charges 5% GST.
Sellers outside Quebec may need to register for the QST under the specified or the general system. A supplier registered for GST/HST elsewhere in Canada must register under the specified system once its taxable supplies to specified Quebec consumers exceed $30,000 over 12 months.
Frequently asked questions
Is QST calculated on GST in Quebec?
No. Both taxes are calculated on the sale price. On a $100 sale that is $5 GST and $9.98 QST (9.975% of $100, rounded to the cent), for a total of $114.98.
How do I remove GST and QST from a Quebec total?
Divide the total by 1.14975. For example, $1,149.75 divided by 1.14975 is $1,000, which means $50 GST and $99.75 QST.
Who administers GST in Quebec?
In Quebec, Revenu Québec generally administers the GST/HST as well as the QST, so most Quebec businesses register and file both with Revenu Québec.
Can I show 14.975% on a Quebec invoice?
No. Revenu Québec says the 14.975% combined rate, and the rounded 9.97% and 14.97% rates, must not appear on the document attesting to the sale.
Do I charge QST to a customer in Ontario?
No. Goods delivered to Ontario and services billed to an Ontario address are generally charged Ontario's 13% HST, with no QST.
Embed the Quebec calculator on your site
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Sources
- CRA: GST/HST calculator (and rates) (accessed October 2, 2026)
- Revenu Québec: Calculating the taxes (accessed October 2, 2026)
- Revenu Québec: Registering for the GST and QST (accessed October 2, 2026)
- Revenu Québec: QST registration for suppliers outside Québec (accessed October 2, 2026)
- Revenu Québec: Specified system, suppliers outside Québec registered for GST/HST (accessed October 2, 2026)
- CRA: RC4022 General Information for GST/HST Registrants (accessed October 2, 2026)
Rates and rules on this page were last checked on October 2, 2026.
Calculators for other provinces and territories
- Alberta GST calculator (5%)
- BC GST + PST calculator (12%)
- Manitoba GST + RST calculator (12%)
- New Brunswick HST calculator (15%)
- Newfoundland and Labrador HST calculator (15%)
- Nova Scotia HST calculator (14%)
- Northwest Territories GST calculator (5%)
- Nunavut GST calculator (5%)
- Ontario HST calculator (13%)
- PEI HST calculator (15%)
- Saskatchewan GST + PST calculator (11%)
- Yukon GST calculator (5%)
- Reverse sales tax calculator
- Canadian sales tax calculator (all provinces)
Guides that use this
This calculator is for estimates. It does not account for zero-rated or exempt supplies, point-of-sale rebates, or place-of-supply rules for services. Check with the CRA or an accountant for your situation.