Blanket Purchase Order
Definition
A long-term purchase order that commits to buying a total quantity or value from a supplier over a period, with individual releases scheduled against it as needed.
In Practice
A blanket purchase order (also called a blanket order or standing order) locks in price, terms, and often capacity for repetitive purchases, while leaving exact delivery quantities and dates flexible. Instead of negotiating and issuing a new PO for every shipment, the buyer sends releases or call-offs against the blanket, and the supplier ships accordingly.
For planners this is a powerful tool: it secures supplier capacity and volume pricing while letting weekly release quantities flex with actual demand. It also slashes transactional workload, since one negotiation covers hundreds of deliveries.
Example: an automotive plant issues a blanket order for 500,000 fasteners over twelve months at a fixed price. Each Friday the planner transmits next week's release quantities based on the production schedule. The supplier holds stock knowing the annual commitment, and the plant receives daily deliveries without raising a single new PO.
Related Terms
A legally binding commercial document a buyer issues to a supplier specifying the items, quantities, prices, delivery dates, and terms of a purchase.
Supplier Lead TimeThe elapsed time from placing an order with a supplier until the goods are received and available for use, including production, transit, and receiving.
Minimum Order QuantityThe smallest quantity of an item a supplier is willing to sell in a single order, driven by their setup costs, batch sizes, or packaging units.
Price BreakA quantity threshold at which a supplier's unit price drops, so ordering more units per order earns a lower price per unit.