Every gram of legal cannabis in Canada carries a federal excise duty — the greater of $1 per gram or 10% of the producer's list price. Health Canada imposes this at the cultivator/processor level, and it is built into the retail price you see on the shelf. On top of that, each province adds its own sales tax at checkout:
The combined effective cannabis tax at retail in Canada therefore ranges from about 15% (Alberta and territories) to 25% (Atlantic provinces and Quebec) once the embedded federal excise is counted — the amount added at the register itself is just the 5–15% sales tax. Retail models vary: Alberta and Saskatchewan are purely private; Ontario, BC, Manitoba, and Newfoundland are hybrid (government wholesale, private storefronts); Quebec, Nova Scotia, New Brunswick, and PEI operate sole-government retail (SQDC, NSLC, Cannabis NB, PEI Cannabis).
Which Canadian province has the highest cannabis tax?
Quebec, New Brunswick, PEI, and Newfoundland all come in around 25% combined effective tax — the 10% federal excise duty plus 15% HST or GST+QST — with Nova Scotia just behind at ~24% after its HST cut to 14%. Ontario is close behind at roughly 23% (10% excise + 13% HST).
Which province has the lowest cannabis tax?
Alberta, Yukon, Northwest Territories, and Nunavut have the lowest combined cannabis tax at roughly 15% — the 10% federal excise duty plus only the 5% federal GST, with no provincial sales tax.
How does the Canadian federal cannabis excise duty work?
Health Canada collects a federal excise duty of the greater of $1 per gram or 10% of the producer's list price. It's applied at the cultivator/processor level and baked into the shelf price before provincial tax is calculated at the register.
Is medical cannabis taxed in Canada?
Yes. Medical cannabis from federally licensed sellers carries the same federal excise duty and GST/HST/PST as adult-use cannabis. Patients can claim eligible expenses on their federal income tax return under the Medical Expense Tax Credit (METC), which effectively offsets part of the tax burden.
What is the difference between HST, GST, and PST on cannabis?
GST is the 5% federal Goods & Services Tax. PST is a provincial sales tax (6–9.975% depending on province) that stacks on top of GST. HST "harmonizes" the two into a single blended rate (13% or 15%) in Ontario and the Atlantic provinces. Quebec has its own version called QST at 9.975% that layers on top of GST.
Who sells legal cannabis in Canada?
It varies by province.
Alberta and Saskatchewan are purely private retail.
Ontario, BC, Manitoba, Newfoundland, and Yukon run a hybrid model (government wholesale or flagship stores plus licensed private retailers).
Quebec (SQDC), Nova Scotia (NSLC), New Brunswick (Cannabis NB), and PEI (PEI Cannabis) are government-only retail. Browse each
province page for the full breakdown.
How do Canadian and US cannabis taxes compare?
Canadian rates are significantly lower than most US adult-use states. The typical Canadian combined effective rate is 15–25%, versus 25–40%+ in high-tax US states like California, Washington, and Illinois. See our
US cannabis tax hub for comparison.
How often do Canadian cannabis taxes change?
Federal excise rates are adjusted through federal legislation (typically once a year). Provincial HST/GST/PST rates change rarely but are occasionally updated via provincial budget legislation — Nova Scotia's HST cut to 14% in April 2025 is a recent example. Our rates are compiled for 2026, and the compile date (plus the date official sources were last checked) is shown at the bottom of every page.
