01 The 20% / 4% tax split plus local option
Montana taxes adult-use retail at 20% and medical at 4%, and counties can add up to 3% more. SellStack's tax engine applies the right rate by channel and jurisdiction from one configuration.
SB 27 froze new licenses and new locations through June 30, 2027, so every license you hold is now a scarce, defensible asset. Adult-use retail is legal only in counties that voted yes, and adult-use home delivery is prohibited statewide. You run compliant pickup and curbside for adult-use, and delivery only to registered medical cardholders. On top of that sits a 20% adult-use tax, a 4% medical tax, Metrc, and a 5mg edible serving cap landing July 1, 2026.
SellStack handles the seven Montana realities as one ledger. The rules can keep moving. Your operations do not have to.
Montana is a smaller, rural, county-gated market where a license moratorium has frozen new entry through mid-2027. That scarcity, combined with pickup-first commerce and a shifting product ruleset, defines how operators compete. Four realities carry the most operational weight.
One ledger, not five tools stitched together. Each links to the detail on the next page.
Montana taxes adult-use retail at 20% and medical at 4%, and counties can add up to 3% more. SellStack's tax engine applies the right rate by channel and jurisdiction from one configuration.
Montana runs on Metrc under the Cannabis and Alcohol Regulation Division, mandatory for every licensee. SellStack Cannabis ERP-Commerce ships with native Metrc integration, reconciled from your own ledger.
Montana prohibits adult-use home delivery; online orders are pre-orders for in-store or curbside pickup, while delivery is permitted only to registered medical cardholders. SellStack owns the order and routes it to the right fulfillment path.
Adult-use retail is legal only in green counties, and SB 27 froze new licenses and locations through mid-2027. SellStack runs multi-location, multi-entity operations so you can plan footprint county by county on one ledger.
Every inventory, sales, and test record carries the lot identifier from receipt through sale, so the lot genealogy is the ledger. Metrc reconciliation and GMP both fall out of it.
SellStack Cannabis ERP-Commerce backs onto your ERP or warehouse platform. Microsoft Dynamics 365 Cannabis on Business Central is fully supported, so financials, inventory, and commerce run from one ledger.
The federal GMP clock started April 28, 2026 for Montana medical operators. The records half is built in, as a byproduct of operating normally.
SellStack moves the numbers on both sides of the ledger. Streamlined automation lifts productivity, so more of every sale reaches the bottom line instead of being spent on manual compliance and reconciliation work. And SellStack's B2B buyer tools have increased buyer purchasing by 50 to 75% in measured results (SellStack Insights Reporting), turning the wholesale relationships you already have into more volume without more headcount.
SellStack ships the commerce and records layer for Montana cannabis operators. It does not stand in for the parts of compliance that are yours:
SellStack does not replace Metrc either. It reconciles to it, so the lot-level record the state sees already matches the record you run your business on. When CARD changes a rule, SellStack's configuration layer handles the adaptation and your inventory logic stays stable.
SellStack is the cannabis commerce engine for operators running real multi-channel, multi-entity operations: B2B wholesale with the tax handled by channel and county, adult-use retail with compliant in-store and curbside pickup, medical delivery to registered cardholders, and medical registry commerce, on one ledger with lot-level traceability and ERP integration.