What is Blanket Agreement?

A blanket agreement works as an umbrella contract. You negotiate the core terms once — unit prices, delivery times, payment terms, liability, and confidentiality — and lock them in for a period of typically one to three years. When you need to place an order, you simply reference the blanket agreement and specify the product, quantity, and delivery date.

The key difference from a fixed-volume contract is that a blanket agreement does not commit you to a minimum purchase quantity unless explicitly agreed. The supplier cannot hold you to volumes you have not ordered. This makes blanket agreements particularly suitable for situations where you know you will purchase from a supplier regularly but cannot predict exact quantities or timing.

In practice, blanket agreements are common for office supplies, cleaning services, temporary staff, IT hardware, and maintenance work. Large organisations work almost exclusively through blanket agreements, but they are equally powerful for SMBs with recurring procurement needs.

Key considerations when setting up a blanket agreement include the contract term, the ability to revise prices during the term, and exclusivity. Some blanket agreements require you to purchase exclusively from that supplier — only agree to this if the terms are genuinely competitive and the supplier is reliable.

Unlike project contracts with a clear deliverable and end date, blanket agreements can quietly run for years without review. This makes them a common source of procurement inefficiency when pricing and terms become outdated.

Without a blanket agreement, you renegotiate price and terms with every order. This costs time, produces inconsistent arrangements, and makes it difficult to maintain oversight of your total supplier spend. With a blanket agreement, you know what you will pay, can budget based on fixed rates, and have a legally solid foundation if the supplier deviates from what was agreed.

For SMBs spending more than five thousand pounds annually with a single supplier, a blanket agreement is almost always more cost-effective than ad-hoc purchasing. The investment in setting one up pays for itself through lower prices and reduced administration.