1. Stackable local tax handling
What MO requires: Adult-use cannabis in Missouri carries a 6% state excise under Amendment 3, layered on the 4.225% state sales tax. Amendment 3 also lets any local government add up to a 3% local cannabis tax, and Missouri courts have ruled that county and municipal 3% taxes can stack, producing combined effective rates near 15% in some jurisdictions. Operators have to configure tax by exact point-of-sale jurisdiction.
What SellStack does natively: SellStack's native tax engine handles all of it out of the box: the 6% state excise, the 4.225% state sales tax, and the stacked county-plus-municipal local tax, each configured once per location and applied automatically at the point of sale.
What this means for your operations: You stop hand-reconciling stacked taxes town by town, and a new local add-on or a court ruling on stacking is a configuration update, not a spreadsheet project.
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2. Metrc reconciliation, platform-proof
What MO requires: Missouri mandates Metrc as its statewide seed-to-sale system; every licensee tags and reports plants, products, inventory, sales, and transfers, and a Metrc manifest must be generated before any transfer. In April 2026 the state opened a bid process to potentially replace Metrc ahead of the contract's expiration, the first known attempt by any state to replace the incumbent, with no successor announced as of late 2026. The track-and-trace platform itself is a live question.
What SellStack does natively: SellStack Cannabis ERP-Commerce ships with native Metrc integration and treats its own ledger as the source of truth, reconciling to Metrc rather than building inventory logic on top of it. Because the ledger is the system of record, the state's reporting system is a reconciliation target, not the foundation your operation depends on.
What this means for your operations: If Missouri changes track-and-trace vendors, you adapt the reconciliation, not your whole operation. The platform underneath can move without your inventory logic moving with it.
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3. Transfers on a 24-hour clock
What MO requires: Transfers between licensed facilities require a licensed transportation facility (or a dispensary's own authority) and a Metrc-generated inventory manifest completed before transit. Cannabis must reach its destination within 24 hours unless circumstances require an extension. The record has to show the manifest, the chain of custody, and the timing.
What SellStack does natively: SellStack runs facility-to-facility transfers and their Metrc manifests from the same ledger as inventory and finance, so the manifest, the lot record, and the clock are all one record rather than three systems to reconcile after the fact.
What this means for your operations: The 24-hour window and manifest trail are part of your workflow, and product moves between facilities with its lot record intact.
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4. Consumer delivery, manifest-ready
What MO requires: Delivery to adult-use consumers is legal in Missouri. A comprehensive dispensary licensee may deliver to any address the consumer directs, including hotels and short-term rentals, and transportation facility licensees may deliver to patients, caregivers, or consumers. Each delivery run requires a Metrc manifest and must complete within the 24-hour transport window.
What SellStack does natively: SellStack owns the delivery order and integrates with your delivery platform as the operations layer; SmartRoutes is already fully supported, so the order carries into vehicle, driver, and routing logic, and the Metrc manifest for each run comes off the same ledger.
What this means for your operations: You get one order-to-doorstep flow instead of re-keying orders into a separate dispatch tool, and every run is manifest-ready inside the 24-hour window.
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5. Lot-aware traceability
What MO requires: Both Metrc on the state side and federal GMP, which has been live for Missouri medical operations since April 28, 2026, require lot-level records throughout the chain. A lot has to stay identifiable from receipt, through processing, to the point of sale, and the records have to hold up to a traceback.
What SellStack does natively: SellStack delivers lot-aware commerce from receipt through sale. Every inventory record, sales record, and test result carries the lot identifier, and the lot genealogy is the ledger itself, not something reconstructed from reports later.
What this means for your operations: The lot story is the audit story. Metrc reconciliation and the records half of GMP both come out as byproducts of operating normally, rather than as separate projects.
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6. ERP integration
What MO requires: A Missouri operation has to keep financials, inventory, and commerce in agreement, and reconcile all of it to Metrc. Operators running a separate ERP and a separate commerce system carry a standing reconciliation burden between the two.
What SellStack does natively: SellStack Cannabis ERP-Commerce backs onto your ERP or warehouse platform as the system of record, and Microsoft Dynamics 365 Cannabis on Business Central is already fully supported. Financials, inventory, and commerce run from the same ledger, so the lot record, the financial record, and the inventory movement are the same record.
No ERP in place yet: You do not need an ERP to run SellStack. SellStack Cannabis E-Commerce Edition operates standalone, with no ERP underneath it, so an operation can stand up a GMP-ready sales model now and work out which ERP or warehouse platform to connect later, or whether to add one at all. Even standalone, it is lab-results compliant out of the box: because it ingests lab data, a no-ERP operation still meets Metrc, BioTrack, and other state lab-results requirements from day one. The lot-aware ledger, the commerce layer, and the records are the same with or without an ERP, so nothing has to be rebuilt when one is connected down the road. That makes it a fit for operations mid-transition, and for startups that need to be selling on a compliant, GMP-ready footing before the deeper infrastructure is in place.
What this means for your operations: There is no reconciliation project between the ERP and the commerce layer. One ledger means your books, your inventory, and your storefront never drift apart.
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7. Schedule III GMP readiness
What MO requires: Medical cannabis moved to Schedule III federally, effective April 28, 2026, and it is in effect now for Missouri medical operations. Adult-use rescheduling is still pending; the DEA proceeding was stayed September 29, 2026 awaiting a GAO report, with a decision expected late 2026 or early 2027. For medical operators, GMP-grade records start to matter.
What SellStack does natively: The records half of GMP, immutable and lot-level, is built into how SellStack operates, so the audit trail is a byproduct of running on one lot-level ledger rather than a separate project.
What this means for your operations: Your Missouri medical operations build GMP-grade records now, on a clock that already started, without a parallel compliance system bolted on beside your commerce stack.