Insights
Dec 8, 2025
Mackisen

Cannabis Retail Store Compliance: Taxes, Markups, and Cash Handling Tips — CPA Firm Near You, Montreal

Introduction
Cannabis retail stores in Quebec operate under one of the strictest regulatory and tax environments in Canada. Whether you are managing a licensed SQDC location, operating under a federal medical cannabis permit, or planning future retail expansion under evolving provincial rules, compliance is non-negotiable. High markups, heavy excise duties, tight cash controls, and rigorous inventory reporting create significant accounting challenges. This guide explains key tax rules, markup structures, and cash-handling best practices — and how a CPA firm near you in Montreal can help cannabis retailers stay fully compliant.
Legal and Regulatory Framework
Cannabis retail in Quebec is governed by:
• The Cannabis Regulation Act (Quebec)
• The Cannabis Act (Federal)
• The Excise Act, 2001
• Revenu Québec and CRA tax legislation
Key tax components include:
1. Federal Excise Duty
Charged at the greater of:
• $1 per gram, or
• A percentage of the sale price
Excise stamps must be affixed to cannabis products before sale.
2. GST & QST
Retail cannabis sales are fully taxable. Stores must remit GST/QST based on POS data.
3. Provincial Pricing and Markups
SQDC pricing structures include:
• Fixed provincial markups
• Minimum selling prices
• Restrictions on promotional pricing or discounts
Retailers must track inventory and markup compliance closely.
4. Inventory Tracking
Strict requirements exist for:
• Seed-to-sale traceability
• Daily inventory reconciliation
• Loss, shrinkage, or destruction reports
• Supplier invoices and excise compliance
Key Court Decisions
Courts and regulatory rulings emphasize:
• Zero tolerance for missing cannabis inventory
• Retailers must maintain accurate POS logs and inventory controls
• Excise duty must be accounted for correctly and separately from GST/QST
• Cash discrepancies constitute compliance violations
• Penalties apply when records are incomplete or do not match physical inventory
Judges and regulators have upheld fines and licence suspensions when poor accounting led to unresolved discrepancies.
Why Cannabis Retail Stores Are Highly Targeted
Audits are frequent because cannabis retail is:
• High-value inventory
• High-tax and excise-sensitive
• Attractive to criminal diversion without strict controls
• Cash-heavy in many locations
• Highly regulated with mandatory reporting
• Inventory discrepancies are a red flag for regulators
Auditors compare POS systems, excise stamps, supplier invoices, discrepancy reports, and inventory logs.
Mackisen Strategy
At Mackisen CPA Montreal, we help cannabis retailers build iron-clad compliance systems. We:
• Set up POS systems that track excise, GST/QST, and provincial pricing
• Perform daily, weekly, and monthly inventory reconciliations
• Build audit-ready documentation for excise and tax authorities
• Establish cash-handling SOPs (segregation of duties, till controls)
• Prepare GST/QST returns with excise-adjusted inputs
• Implement shrinkage-tracking and destruction procedures
• Review markup compliance across all product lines
• Prepare full financial statements and licensing compliance reports
Real Client Experience
A cannabis retailer was penalized for recurring inventory discrepancies. We rebuilt the seed-to-sale tracking, implemented standardized cash and inventory procedures, and solved reconciliation issues. Another location miscalculated excise duty; we corrected historical filings and prevented a regulatory escalation.
Common Questions
Do cannabis retailers charge GST and QST?
Yes, cannabis is fully taxable.
What happens if inventory goes missing?
It must be reported immediately. Repeated discrepancies trigger compliance actions.
Can stores offer discounts or promotions?
Heavily restricted in Quebec — compliance varies by product type.
How should excise duty be recorded?
Separately from GST/QST and clearly traceable through POS and accounting systems.
Why Mackisen
With more than 35 years of combined CPA experience, Mackisen CPA Montreal helps cannabis retailers manage tax compliance, excise duty reporting, and strict inventory controls. Our expert team ensures precision, transparency, and full protection during audits or regulatory inspections.

