Organigram reported $39.3 million of excise duty on $145.1 million of gross revenue in its third quarter of 2026. Aurora Cannabis reported roughly $5 million on $99.2 million. Same country, same statute, very different tax line. The gap is not accounting technique. It is where the product went.
Cannabis exported from Canada is not subject to cannabis duty, and it does not carry an excise stamp. Duty attaches when a licensee packages product and enters it into the Canadian duty-paid market. Send that same gram to a German or Australian importer under a Health Canada export permit and no duty is payable, no provincial stamp is applied, and the price your buyer sees has nothing in it for the Canada Revenue Agency.
For importers, that explains why Canadian export quotes do not track Canadian wholesale sheets. For producers, it explains why the excise line on a competitor's income statement quietly reveals how international their book really is. Both readings get missed constantly.
How cannabis excise duty works in Canada
Two licences sit behind every legal gram. Health Canada issues the cultivation or processing licence under the Cannabis Act. The CRA issues a separate cannabis licence under the Excise Act, 2001, applied for with Form L300, and both must be in effect before you cultivate, produce, or package. There is no fee for the CRA licence. There is a penalty for starting without it.
Duty is imposed when a cannabis licensee packages a product and delivers it to a purchaser in Canada. For dried flower, two calculations run side by side and you pay whichever produces the larger number, transaction by transaction.
Flat rate versus ad valorem
| Component | Flat rate | Ad valorem |
|---|---|---|
| Federal cannabis duty | $0.25 per gram of flowering material | 2.5% of the dutiable amount |
| Additional duty, specified provinces | $0.75 per gram of flowering material | 7.5% of the dutiable amount |
| Combined on flower | $1.00 per gram | 10% of the dutiable amount |
| Non-flowering material | $0.30 per gram combined | Not applicable |
Manitoba applies no additional duty. Alberta, Nunavut, Ontario, and Saskatchewan layer a further adjustment on top, at rates that reach 16.8% in Alberta and 19.3% in Nunavut, which is why one batch split between an Ontario order and a Manitoba order produces two different duty figures.
Run the arithmetic at current wholesale pricing and the design intent falls apart. At $3.00 per gram, the 10% calculation yields $0.30 while the flat rate yields $1.00, so the flat rate governs and the effective burden lands above 30%. A duty written as a 10% levy in 2018 now behaves like a fixed cost of production. Price compression did not only squeeze margins. It changed which half of the formula applies, and that shift is the single biggest reason Canadian producers went looking for buyers abroad. Your domestic supply agreements are priced inside that arithmetic whether or not anyone names it.
Why exported cannabis carries no duty and no stamp
The stamping regime is the mechanism that makes the relief work. Under the Excise Act, 2001, a licensee cannot enter a product into the duty-paid market unless it carries a cannabis excise stamp for the province of delivery. Thirteen provincial and territorial stamps exist, each in a different colour, each ordered and reconciled through the CRA stamp desk.
Product destined for export sits outside that market entirely. CRA guidance states plainly that cannabis products intended for export are not required to be stamped, and the Act permits a licensee to remove unstamped product from its premises where that product is being exported by the licensee in accordance with the Cannabis Act. No stamp, no duty, no provincial allocation.
Five conditions the relief depends on
- The producer holds both a Health Canada licence and a CRA cannabis licence, in effect at the time of packaging
- The shipment is authorised by a Health Canada export permit for medical or scientific purposes
- The licensee that packaged the product is the party exporting it
- The product leaves without a provincial excise stamp affixed
- The movement is recorded as packaged unstamped inventory and reported to the CRA
Condition four is where good operators still lose money. A stamped package cannot be exported as though it were unstamped, and a stamp applied in error is not something you peel off and reuse, because stamps are controlled inventory the CRA reconciles against your orders. The decision therefore belongs at packaging, not at dispatch. Whoever decides which pallets get stamped on a Tuesday morning is making a tax decision, and most facilities have never framed it that way.
What the excise line reveals about a Canadian supplier
Public filings make this point better than any explanation can. Reported results across Canada's listed producers in 2026 show excise costs that swing wildly against similar revenue, and the swing tracks geography rather than efficiency.
Organigram booked about 27% of gross revenue as excise while roughly 35% of consolidated revenue came from international sales. Aurora Cannabis, whose international medical sales reached $48 million in the three months to 31 December 2025, booked around $5 million against $99.2 million of revenue. Rubicon Organics reported $3.6 million on $17.3 million of product sales in the three months to 31 March 2026, close to 21%. None of those companies is better at tax than the others. They simply sell into different markets.
The 3-line excise read
- Excise as a share of gross revenue. Consistently above 25% signals a domestically weighted supplier whose margin depends on a duty regime it cannot control.
- Disclosed international or medical revenue. If that number climbs while the excise line stays flat, export volume is real rather than aspirational.
- Excise arrears language in the notes. A producer behind on remittances carries CRA collection risk that sits ahead of your purchase order in priority.
Procurement teams check the first two and skip the third almost every time. It is the one that determines whether your supplier is still shipping in eighteen months.
There is a corollary for producers. Any Canadian LP still quoting export flower off its domestic wholesale sheet is pricing in a tax it will never pay on that shipment. On a 500 kg order, a dollar per gram of phantom duty is half a million dollars of misplaced margin, which is the whole negotiation and then some. Landed cost, Incoterms, and duty treatment belong in the same conversation.
Where the relief goes wrong in practice
Filing when nothing is owed
The Act requires a return for every reporting period even when the duty payable is zero. A producer whose entire book is export still files Form B300, monthly by default, or quarterly where the CRA has authorised it under the measure introduced in Budget 2023. Nil duty is not nil filing, and a missed return is a compliance finding regardless of how clean the underlying shipments were.
Returned and rejected shipments
A consignment refused at destination and brought back to Canada does not stay outside the duty-paid market forever. Once that product is packaged and sold domestically, duty applies and stamps go on. Decide the domestic fallback before the pallet ships, not after a German qualified person rejects a batch on a microbial result and you are holding 80 kg of unstamped inventory with no route to market. Correct export packaging and labelling makes that pivot cheaper, because repackaging is the expensive part.
Records and stamp reconciliation
Supporting documents are held six years. Stamp inventory is reported to the CRA. Licences run five years at most and renewal is filed at least 30 days before expiry. Audits of export-heavy licensees concentrate on the unstamped inventory schedule, because that schedule is where duty-free movement is either proven or disproven, and reconstructing it after the fact is painful.
None of this is exotic. It is bookkeeping with statutory teeth, and it is the part of an export programme a buyer never sees until the day it fails.
AlphaLeaf is a Health Canada Licensed Producer based in Montreal, growing indoor, hand-trimmed flower from refined genetics. We hold export authorisation under the Cannabis Act and maintain ISO/IEC 17025 batch testing and full traceability, shipping unstamped export product under permit to importers serving the German, Australian, and Israeli medical channels.
Want to know what Canadian flower actually costs you, landed and free of duty? Talk to our export team. Bring your volumes. We will bring the paperwork.
Frequently Asked Questions
Do Canadian licensed producers pay excise duty on exported cannabis?
No. Cannabis duty is not payable on product exported by the cannabis licensee in accordance with the Cannabis Act. The duty attaches to product entering the Canadian duty-paid market, so a shipment leaving under a Health Canada export permit goes out with no duty and no stamp.
Does exported cannabis need a Canadian excise stamp?
No. CRA guidance confirms that cannabis products intended for export are not required to be stamped. An excise stamp identifies duty paid for one specific Canadian province or territory, which has no meaning for a consignment destined for Germany, Australia, or Israel.
Do you need a CRA cannabis licence to export cannabis from Canada?
Yes, in addition to the Health Canada licence. The CRA cannabis licence is issued under the Excise Act, 2001 using Form L300 and must be in effect before any packaging activity begins. There is no application fee, and starting without it can trigger penalties.
How is Canadian cannabis excise duty calculated on dried flower?
The greater of a flat rate and an ad valorem rate applies on each transaction. Federal flat duty is $0.25 per gram of flowering material, with $0.75 per gram of additional duty in most provinces. Ad valorem is the alternative, at 2.5% federal plus 7.5% additional on the dutiable amount, and it rarely wins at today's wholesale pricing.
Does a producer that only exports still have to file a B300 return?
Yes. A return is required for each reporting period even when no duty is payable. Exporters report packaged unstamped inventory movements on that return, and may file quarterly rather than monthly if the CRA has authorised quarterly reporting.
Why do Canadian producers report such different excise costs?
Because excise follows sales geography rather than operating skill. A producer weighted toward Canadian retail can report excise above 25% of gross revenue, while an export-weighted producer reports a fraction of that on comparable revenue. Comparing the ratio across public filings shows how international a supplier really is.
