What Is CastleGate Storage and How It Works

The warehousing of supplier-owned inventory within the CastleGate fulfillment network.

CastleGate Storage The warehousing of supplier-owned inventory within the CastleGate fulfillment network. This model places ownership of goods with the supplier while CastleGate operates receiving, storage, inventory control, order fulfillment, and outbound transportation on behalf of that supplier.

CastleGate Storage is a specific fulfillment arrangement used when suppliers want access to a distributed fulfillment network without transferring title of inventory to the operator. CastleGate handles day-to-day warehouse operations, but legal title, primary accounting, and often responsibility for some risks remain with the supplier, as outlined in service agreements.

How Goods Enter The Network

Suppliers typically ship inventory into CastleGate facilities using an agreed-on receiving process. Common practices include advance shipping notices (ASN), SKU-level labeling, and predefined pallet/unit configurations. CastleGate logs receipts into its warehouse management system (WMS) and reconciles physical counts to supplier manifests. Differences from standard third-party warehousing include title retention and sometimes different insurance and liability clauses.

Inventory Control And Visibility

CastleGate provides real-time visibility to both warehouse operations and suppliers through WMS dashboards, EDI/API feeds, or portal access. Typical inventory controls include cycle counting, SKU-level reconciliation, lot/expiry tracking for regulated products, and batch separation for multi-supplier facilities. Because ownership rests with suppliers, reporting often includes additional audit trails and transaction-level detail to support supplier accounting and chargebacks.

Fulfillment And Outbound Processes

Outbound activity mirrors standard fulfillment models: orders are received, picked, packed, labelled, and shipped from CastleGate locations. The key operational distinction is contractual: outbound authorizations, chargebacks for mis-picks, and freight billing may require supplier signoff or pass-through accounting. CastleGate commonly supports multiple outbound flows—retail replenishment, direct-to-consumer, and B2B pallets—with routing rules keyed to supplier instructions.

• Receiving: CastleGate unloads and inspects incoming supplier shipments, then records units in the WMS to supplier-specific inventory locations.
• Storage: Inventory stored by SKU, lot, or owner bin with segregation controls when needed.
• Picking & Packing: Fulfillment executed per supplier-specific packaging, labeling and compliance rules.
• Outbound Shipping: Carrier tendering and tracking performed under CastleGate processes, with reporting back to the supplier.

Contracts, Liability, And Insurance

Because the supplier retains ownership, service agreements must clearly allocate risk. Typical contract elements include responsibilities for physical loss, damage, shrinkage, and insurance requirements. CastleGate may require suppliers to maintain inventory insurance naming CastleGate as an additional insured or to accept limited liability tied to operational SLAs. Indemnification clauses, claims processes, and approved valuation methods are standard inclusions.

Accounting And Tax Considerations

Supplier-owned inventory within CastleGate often remains on the supplier’s balance sheet. That affects inventory valuation, GST/sales tax nexus determination, and duty considerations for imported goods. Suppliers should coordinate with accounting and tax advisors to define when title transfer occurs (if ever) and to align transaction reporting (receipts, shipments, returns) between CastleGate’s WMS and the supplier’s ERP.

When CastleGate Storage Is Most Useful

Companies that benefit from CastleGate Storage include brand owners who want distributed fulfillment without relinquishing ownership, importers who need domestic staging for clearance and consolidation, and suppliers subject to strict channel controls where title movement complicates accounting or regulatory compliance. It’s also common in consignment models where suppliers want goods close to customers but prefer to recognize revenue only on sale.

Practical Example

A beverage supplier ships pallets to CastleGate multi-site facilities across the U.S. CastleGate receives pallets, stores them in climate-controlled sections, and fulfills retailer orders. The supplier retains title and numeric control of inventory; CastleGate reports daily on inventory levels and executes sends to retailers on the supplier’s instructions. Insurance and liability follow the contract: the supplier insures stock while CastleGate maintains operational liability coverage for handling errors.

Operational Best Practices

• Labeling Standards: Agree on ASN and barcode standards before first shipments to avoid receiving delays.
• Reconciliation Cadence: Set regular cycle counts and exception reporting to reconcile supplier and WMS records.
• Clear SLAs: Define timelines for receiving, putaway, pick accuracy, and claims resolution.
• Data Integration: Use EDI or API feeds for real-time inventory and order updates to prevent billing disputes.

In short, the CastleGate Storage model gives suppliers access to CastleGate’s fulfillment infrastructure while keeping legal ownership of inventory. Proper contracts, clear data flows, and operational alignment are essential to realize the speed and distribution benefits without creating accounting or liability surprises.