Montana Medical Marijuana Card: Complete Guide
Montana Cannabis Tax & Purchasing Matrix
| Feature / Metric | Recreational Adult-Use | Registered Medical Patient |
|---|---|---|
| State Retail Excise Tax | 20% Added at Checkout | 4% Added at Checkout |
| Local-Option County Tax | Up to 3.0% Added | Up to 3.0% Added |
| Maximum Potential Tax Stack | 23.0% Total at Checkout | 7.0% Total at Checkout |
| Dispensary Availability | Limited to "Green Counties" Only | Statewide Access (Green & Red Counties) |
| Home Cultivation Plant Cap | Max 2 mature plants per household | Max 4 mature plants per patient |
| Minimum Purchase Age | 21+ | 18+ |
1-Year Financial Value Comparison (Based on a $200/month budget)
- Annual Recreational Tax Expenses (20% State Rate): ~$480
- Annual Medical Tax Expenses (4% State Rate): ~$96
- Program Setup Investment: $169.99 ($149.99 Evaluation Fee + $20.00 State Fee)
- Net Year-One Financial Savings: $214.01 Saved
2026 Regulatory Spotlight: House Bill 636 & House Bill 792
The Montana Department of Revenue Cannabis & Alcohol Regulation Division (CARD) is enforcing strict new operational guidelines arriving under recent legislative mandates:
- Potency Restriction Adjustments (HB 636): Effective July 1, 2026, the maximum allowable single-serving potency for marijuana-infused ingestible products and edibles drops from 10mg down to 5mg of THC. This cap limits single-package dosing and does not alter the medical 5-ounce monthly volume allowance.
- Exit Packaging Mandates (HB 792): Effective July 1, 2026, all operating dispensaries must implement verbatim, black-and-white warning blocks on exit packaging accompanied by a direct QR-linked digital portal pointing to the state's addiction recovery resources.