01 The 37% excise, and the medical line
SellStack's native tax engine handles the 37% excise, the state and local sales tax, and the medical exemption out of the box, calculated at configuration.
Washington legalized in 2012 and runs unlike newer markets: a 37 percent excise, the highest anywhere, strict separation between growing and retail so there is no vertical integration, no home delivery, and CCRS, the state's own reporting system, not Metrc or BioTrack. It is a mature market where discipline wins, and the operators who hold their margin are the ones who run leanest and sell smartest.
SellStack handles six Washington realities as one ledger, keeps your ledger the system of record (CCRS is just where you report), and moves your numbers too: buyer purchasing up 50 to 75% with its B2B buyer tools (SellStack Insights Reporting).
Washington is a mature market with its own rules: the highest excise in the country, strict tier separation, and a state reporting system that is not Metrc. Three pieces carry the most operational weight.
One ledger, not separate tools stitched together. Each links to the detail on the next page.
SellStack's native tax engine handles the 37% excise, the state and local sales tax, and the medical exemption out of the box, calculated at configuration.
Washington bars producers and processors from holding retail. SellStack handles arms-length wholesale between legally separate entities from one ledger.
Washington reports to CCRS, not Metrc, often through an integrator. SellStack keeps your lot-aware ledger as the system of record and reconciles to CCRS.
Every inventory, sales, and test record carries the lot identifier from receipt through sale, so the lot genealogy is the ledger. CCRS 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 Washington 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 Washington cannabis operators. It does not stand in for the parts of compliance that are yours:
Washington uses CCRS rather than Metrc, and SellStack does not replace it. SellStack keeps your own lot-aware ledger as the system of record and reconciles to CCRS, so when the state migrates or replaces CCRS, your inventory logic stays stable.
SellStack is the cannabis commerce engine for operators running real multi-channel operations: B2B wholesale between separate licensed entities, B2C retail, and medical patient service, on one ledger with lot-level traceability and ERP integration.