What Is a Split Shipment Strategy?

A fulfillment strategy where available items ship first while delayed items ship later.

Split Shipment Strategy is a fulfillment strategy where available items ship first while delayed items ship later. This approach separates order lines or SKUs into multiple shipments so customers receive in-stock goods immediately rather than waiting for backordered items to arrive.

Split shipments are common across retail, e-commerce, and B2B operations when suppliers, warehouses, or carriers cannot deliver every item in an order at the same time. A merchant may use split shipments when an order contains items located in different facilities, when some items require additional processing (kitting, quality checks, temperature control), or when one or more items are on backorder or delayed at the supplier.

How The Strategy Works

At order entry, the order management system (OMS) or warehouse management system (WMS) evaluates availability by SKU and location. If one or more SKUs are unavailable for immediate fulfillment, the system can:

• Partial Release: Flag available lines for immediate pick, pack, and ship while leaving remaining lines pending.
• Hold-and-Release: Hold the entire order until all items are available (not a split shipment approach).
• Customer Choice: Offer the buyer options: wait for everything, receive partial shipment, or cancel out-of-stock items.

Once picked and packed, the first shipment goes to carriers with separate tracking and potentially different service levels for each package. Later, when delayed SKUs arrive or are manufactured, the second (or subsequent) shipment is processed and sent with its own tracking.

Why Companies Use Split Shipments

Companies adopt split shipments to balance speed, inventory constraints, and customer expectations. Typical drivers include urgent customer demand for in-stock items, multi-warehouse inventory distribution, supplier lead-time variability, and promotions that bundle fast-moving with slow-moving products.

• Customer Satisfaction: Delivering part of an order quickly reduces wait time for customers who need immediate items.
• Inventory Optimization: Frees movement of available inventory while awaiting replenishment for other lines.
• Revenue Recognition: Allows businesses to invoice and recognize revenue on shipped items rather than delay recognition until full order completion.

Operational Considerations

Implementing split shipments adds complexity to picking, packing, shipments tracking, and customer service. Systems must support multi-shipment order states, split billing or consolidated invoicing, and clear return policies. Warehouses need rules for picking priority (ship available first vs. hold certain SKUs together), packaging (single vs. separate cartons), and carrier labeling to avoid confusion at delivery.

Customer Experience And Communications

Clear communication is critical. Customers should be informed at checkout and in post-order emails whether their order will be split, which items ship now, and how many total shipments to expect. Provide distinct tracking numbers and estimated arrival dates for each shipment. Returns policy must explain whether returns are consolidated or handled per shipment.

Who Bears The Costs

Frequent split shipments increase shipping and handling costs—multiple fulfillment tasks, extra cartons, more tracking, and carrier charges. Merchants decide whether to absorb those costs, bill the customer for expedited or multiple shipments, or use free/discounted shipping thresholds with clear terms.

Practical Example

A customer orders a set of household items: two fast-moving cleaning products from Warehouse A and a bulky sofa cushion on backorder from Warehouse B. The OMS routes the cleaning products to immediate pick and generates Shipment #1 with two tracking numbers; the cushion is left as Pending. When the cushion arrives next week, the OMS creates Shipment #2 with its own tracking. The customer receives partial delivery in two days and the cushion a week later.

Tips For Managing Split Shipments

• Rule Setup: Define when to split automatically (e.g., priority SKUs, split only above a value threshold).
• Customer Choice: Offer opt-in/out for split shipments at checkout to reduce surprises and returns.
• System Support: Ensure OMS/WMS and carrier integrations handle multiple tracking numbers and consolidated billing.

In short, the Split Shipment Strategy makes it possible to ship available items immediately while delaying out-of-stock or otherwise delayed SKUs to later shipments. It improves delivery speed for available goods but requires clear communication, robust order management, and careful cost controls to avoid customer confusion and rising fulfillment expenses.