Cannabis ERP Software: Seed-to-Sale Inventory, METRC Integration, and AI Compliance Automation
Built on your existing ERP. No replacement.
METRC-integrated seed-to-sale tracking, quarantine and destruction accounting, regulatory reporting automation, and AI yield variance detection for cannabis manufacturers and processors.
Book a Discovery Call→
Featured ›
Featured ›
Client
Featured ›
Featured ›
Featured ›
Partner
Member
Featured ›
Featured ›
Featured ›
Featured ›
Featured ›
Featured ›
Featured ›
Featured ›
Featured ›
Featured ›
Featured ›
Featured ›Why Cannabis Manufacturers Need More Than a Standalone Seed-to-Sale Platform
Every cannabis manufacturer working in a regulated system knows the compliance requirement: seed-to-sale tracking through METRC or the state-mandated system, with inventory reconciliation at every production stage. What most cannabis-specific ERP platforms do not address is the manufacturing accounting layer, namely batch costing, overhead allocation, COGS classification for 280E compliance, and the financial costing that runs alongside regulatory compliance.
Compliance platforms track plant tags, package tags, and transfers for METRC reporting, and they do this well.
They are not job costing systems and do not track the manufacturing cost of a batch through raw material inputs like labor, overhead, and yield variance, the data a cannabis processor needs to price products and maximize COGS deductions under 280E.
Standard ERPs such as NetSuite, Acumatica, and QuickBooks Enterprise handle job costing, purchase order receiving, and financial accounting well.
But they are not METRC-integrated: they do not generate plant tags, submit transfers, or file the reports state regulators require.
The cannabis manufacturing company needs both, connected so every production event creates a regulatory record and an accounting entry automatically. GrayCyan builds the integration layer connecting the manufacturer's existing ERP to METRC and seed-to-sale inventory, so every harvest batch, production run, and package transfer creates both records at once.
Seed-to-Sale Inventory Tracking: From Cultivation Through Production to Distribution
For a cannabis manufacturer operating under 280E, the accuracy of seed-to-sale inventory costs directly determines taxable income, because 280E disallows ordinary business deductions but permits COGS. Every dollar of inventory cost legitimately classified as COGS reduces 280E tax liability. A cannabis manufacturing ERP covers seed-to-sale inventory across four stages.
Plant Tags and Wet Weight at Harvest
For vertically integrated operations, this means plant tag assignment at propagation, plant count tracking by growth stage, wet weight capture at harvest, and batch assignment with UID generation.
Each event generates both a METRC transaction and an ERP entry.
Dry Weight, Trim and Loss Percentages
Wet weight converts to dry weight against the harvest batch, and trim and waste weights are captured against the same batch.
Loss percentages calculate against COGS.
Input Lots to Output Packages
Input materials such as flower and trim are issued against a production order, and output packages such as extract and distillate are received with UID assignments.
The batch links back to input lots for full genealogy.
BOM-Driven Consumption With METRC Packages
Finished products, edibles, tinctures, and beverages get manufactured through BOM-driven component consumption.
With METRC package assignments across all cannabis inputs and outputs.
A cannabis manufacturer's ERP must distinguish COGS, which is deductible under 280E, from ordinary expenses, which are not. Direct material, direct labor, and manufacturing overhead count as COGS; sales, marketing, and G&A do not.
Estimated → Auditable
GrayCyan builds the production costing layer that makes this classification auditable rather than estimated.
METRC Integration: Automatic Regulatory Reporting from ERP Data
METRC is the state-mandated cannabis traceability system used in 40+ states. Every licensed business must report inventory movements to METRC in real time: plant tags, harvest batches, package creation, transfers, adjustments, and destruction. Manual reporting from a system not connected to the ERP creates a reconciliation risk, and when the two disagree, the METRC record governs.
Plant Tags
Every plant must carry a METRC-assigned UID tag, with count changes reported in real time.
Harvest Batches
At harvest, a batch ID gets created with wet weight, plant count, and harvest date, linked to the harvested tags.
Package Creation
Processed cannabis must be assigned a package tag UID before transfer or sale, with weight, category, and strain recorded at creation.
Transfers
Every transfer between licensed facilities requires a manifest with package UIDs, quantities, and driver and receiving-facility details, submitted before departure.
Adjustments
Adjustments for waste or testing loss need a reason code that matches the ERP record.
Destruction
Destroyed cannabis needs witness information and a final weight reported.
GrayCyan connects ERP to METRC through API middleware that reads production completions, adjustments, and transfers, then submits the corresponding METRC calls automatically, with no manual entry. The acknowledgment, including the UID for each package, writes back to the ERP lot record, creating a two-way link, the core of ERP inventory management built for a regulated production environment.
Quarantine, Destruction, and the Accounting Behind Cannabis Inventory Write-Offs
Cannabis destruction is not just a disposal event. It is a regulatory event through the METRC destruction report, an accounting event where the lot is written to zero value, and a COGS or loss event depending on why destruction occurred.
All three need to happen together, and in most operations, they do not.
A destruction is three events at once: the METRC destruction report, the write-down of the lot to zero value, and the classification of that write-down as COGS or as a loss.
Three Systems → One Confirmation
In most operations these are three separate manual steps across two systems. They should fire from a single confirmation.
The ERP Flag Has to Block the Manifest
A product failing a lab test must be quarantined immediately, removed from available inventory, and barred from transfer.
The ERP flag has to block METRC transfers, since a quarantined package cannot generate a valid manifest, and any status change requires documented authorization: who decided, based on which result, on which date.
One Trigger, Both Records
At destruction confirmation, the inventory account is credited to zero, and the offset posts to COGS if it is a normal production loss, or to a loss account if it resulted from contamination or seizure.
The METRC destruction record generates alongside the ERP journal entry, sharing the same trigger, and the workflow captures the witness signature METRC requires.
A New Package, A New Cost
Some states allow waste to be remediated rather than destroyed, reprocessed into a different category, creating a new METRC package with a new UID.
In the ERP, materials from the quarantined package are consumed and the remediated product is received at its recalculated cost.
Are your METRC records and your cost records the same records?
When the two disagree, the METRC record governs. Tell us which ERP you run and which state system you report into.
Book a Discovery Call→AI in Cannabis ERP Inventory: Three Compliance Automation Mechanisms
AI in cannabis ERP inventory does not remove the compliance requirement. METRC reporting stays mandatory regardless. What AI does is reduce the human error surface area and catch discrepancies before they reach the regulator.
Agentic METRC Reporting With Zero Manual Entry
An agentic system monitors ERP production events and generates the corresponding METRC calls automatically.
For complex events, such as an extraction run producing multiple output packages from multiple input lots, METRC requires a specific event order, and the agent executes that sequence without manual orchestration, writing acknowledgments back to the ERP lot records automatically.
AI Yield Variance Detection
A model trained on historical batch yield data establishes expected ranges by input material, strain, and process. When a batch yields significantly outside that range, the AI flags it before the METRC report goes out.
A variance that reaches METRC first becomes a compliance finding rather than an internal quality event. Yields low enough to suggest diversion get flagged for documented review before the batch closes.
AI Quarantine and Destruction Workflow Automation
When a failed lab result enters the ERP, the AI layer quarantines the affected packages in both systems, generates documentation, and queues the destruction authorization.
At completion, the accounting entry, destruction report, and witness documentation are generated from a single confirmation, removing the need to update three systems by hand.
What GrayCyan Builds for Cannabis Manufacturers
GrayCyan builds the ERP integration layer for cannabis manufacturers, connecting the ERP already running in the facility to METRC and seed-to-sale requirements.
Whether that ERP is NetSuite, Acumatica, QuickBooks Enterprise, or Odoo, the integration goes in without replacing the costing system already in place.
This includes:
- METRC API middleware for automatic reporting covering plant tags, harvest batches, package creation, transfers, adjustments, and destructions, with no manual entry.
- Seed-to-sale inventory built into the ERP with METRC UIDs linked to lot records from plant tag through distribution.
- 280E COGS costing that classifies direct material, labor, and overhead for an auditable cost layer.
- Quarantine and destruction accounting with automated journal entries and reports.
- Yield variance tracking with AI flagging for deviations.
Every system built is fully owned by the operator at completion, with no recurring license fees for what was built.
Who This Is Right For
Manufacturers and Processors
Making edibles, concentrates, beverages, tinctures, or topicals who need METRC compliance and manufacturing cost accounting in one system.
Outgrown Standalone Platforms
Companies that need ERP-level financial costing and job costing alongside regulatory reporting.
Vertically Integrated Operations
Covering all three METRC license tiers.
280E Documentation Needs
Processors needing accurate 280E documentation connected to production costing.
It is not the right fit for:
- Dispensaries and retailers, since GrayCyan serves manufacturers rather than point-of-sale operations.
- Single-license cultivators with no processing activity, who are better served by standalone METRC platforms.
- Operations with no existing ERP, which need a data foundation project first.
Frequently Asked Questions: Cannabis ERP Inventory
Need METRC-Integrated ERP Without Replacing Your Accounting System?
Tell us which ERP or accounting system you run, which state METRC system you operate under, and where your compliance reporting and production costing are currently disconnected.
GrayCyan will show you what an integrated cannabis ERP looks like on your existing infrastructure.
See ERP inventory management or start with our AI Readiness Assessment →