Quebec QST Calculator (9.975% + 5% GST)
Quebec charges 5% federal GST plus 9.975% provincial QST — a combined 14.975% on most goods and services. This calculator applies both, splits the result, and supports reverse-calculating from a tax-included total.
QST administered by Revenu Québec
Result — GST+QST
- Pre-tax amount
- $1,000.00
- Tax-included amount
- $1,149.75
- GST (5%)
- $50.00
- QST (9.975%)
- $99.75
- Total tax (14.975%)
- $149.75
Key Quebec QST facts (2026)
- Rate: 9.975% QST + 5% GST = 14.975% combined. Stable since January 1, 2013.
- Administration: Revenu Québec (RQ), not the CRA. Register for QST and GST together via Revenu Québec's My Account for Businesses.
- Base: Harmonised with GST since 2013 — if GST applies, QST almost always applies.
- Registration threshold: $30,000 of worldwide GST-taxable supplies in 4 consecutive quarters (same as federal).
- Input Tax Refunds (ITRs): Registered businesses recover QST on business purchases — functionally equivalent to GST Input Tax Credits. Filed on the same combined return as GST.
- Digital services: Non-resident suppliers of digital services (streaming, SaaS, digital marketplaces) to Quebec consumers must register under the specified supply regime — no $30,000 threshold.
Worked examples
| Pre-tax | GST (5%) | QST (9.975%) | Total tax | Tax-included |
|---|---|---|---|---|
| $50.00 | $2.50 | $4.99 | $7.49 | $57.49 |
| $100.00 | $5.00 | $9.98 | $14.98 | $114.98 |
| $500.00 | $25.00 | $49.88 | $74.88 | $574.88 |
| $1,000.00 | $50.00 | $99.75 | $149.75 | $1,149.75 |
| $10,000.00 | $500.00 | $997.50 | $1,497.50 | $11,497.50 |
Frequently asked questions
What is the QST rate in Quebec for 2026?
The Quebec Sales Tax (TVQ / QST) rate is 9.975%, unchanged since January 1, 2013, when Quebec harmonised the QST base with the federal GST base. Combined with the 5% federal GST, Quebec charges 14.975% total sales tax on most goods and services. QST is administered by Revenu Québec, not the CRA.
How do I calculate 14.975% tax on a Quebec purchase?
Multiply the pre-tax price by 1.14975 to get the tax-included total. Example: $100 × 1.14975 = $114.98. To split the tax: GST = $100 × 5% = $5.00; QST = $100 × 9.975% = $9.97 (technically $9.975, rounded). To reverse from a tax-included total, divide by 1.14975. $114.98 / 1.14975 ≈ $100.00.
Is QST charged on top of GST?
Both apply to the pre-tax amount, not stacked on each other. On $100: GST = $5.00, QST = $9.975, tax-included = $114.98. QST is NOT charged on the GST amount — pre-2013 behaviour was different, when QST used to be charged on the GST-inclusive amount. They apply to the same base (since January 2013), but they are separate taxes administered by different authorities: GST is federal (CRA), QST is provincial (Revenu Québec). Registered businesses claim Input Tax Credits (ITCs) against GST and Input Tax Refunds (ITRs) against QST — they are filed separately, not netted together.
Do I need to register for QST?
Yes, if your worldwide GST-taxable supplies exceed $30,000 in a single calendar quarter or over 4 consecutive quarters — the same threshold as federal GST. Non-resident digital platforms selling to Quebec residents must also register under the specified supply regime, with no $30,000 threshold for digital services.
What is exempt from QST in Quebec?
Since Quebec harmonised the QST base with GST in 2013, the exempt list is short: basic groceries, prescription drugs, medical devices, residential rent, most health and dental services, most financial services, and most educational services. Books are zero-rated (QST applies at 0% so Input Tax Refunds can still be claimed on costs).
Does QST apply to digital services?
Yes. Since January 2019, non-resident suppliers of digital services to Quebec consumers must register under the specified supply regime and collect QST — no $30,000 threshold for digital services.
Not in Quebec? Use the multi-province QST/PST/RST calculator for BC, Saskatchewan, and Manitoba, or the GST/HST calculator for HST provinces.
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