Back Order
Also known as: Backorder
A back order is an order for goods that cannot be fulfilled immediately because they are out of stock, to be delivered when stock is replenished.
When demand outstrips available stock, a supplier may accept the order and place it on back order rather than cancel it, committing to deliver once inventory returns. For buyers, back orders mean waiting — which can disrupt operations if the item is critical and the lead time is uncertain.
A high level of back orders signals demand-planning or supply problems and can point to inadequate safety stock. Buyers manage the risk by tracking supplier fill rates, holding buffer stock for critical items and, where possible, multi-sourcing to reduce reliance on a single stock position.
Frequently asked questions
- What is a back order?
- A back order is an order for goods that cannot be fulfilled immediately because they are out of stock, to be delivered once the supplier replenishes inventory.
- How do you reduce back orders?
- Improve demand forecasting, hold adequate safety stock for critical items, monitor supplier fill rates, and multi-source where reliance on a single stock position is risky.
Related terms
Stockout
A stockout is when an item is unavailable because inventory has run down to zero, so demand for it cannot be met.
Read definitionSafety Stock
Safety stock is extra inventory held as a buffer to protect against unexpected demand spikes or supply delays.
Read definitionFill Rate
Fill rate is the percentage of customer demand that is met from available stock without stockouts or backorders.
Read definitionOrder Management
Order management is the process of handling purchase orders from placement through confirmation, fulfilment and receipt to completion.
Read definitionExplore related across the knowledge graph
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