What is an "indefinite delivery/indefinite quantity" (IDIQ) contract?

An "indefinite delivery/indefinite quantity" (IDIQ) contract is characterized by its flexibility in terms of delivery and quantity. This type of contract allows for an indefinite quantity of supplies or services to be delivered over a specified period. Unlike fixed quantity contracts, which stipulate a specific amount of products or services, IDIQ contracts are structured to accommodate varying needs and requirements over time. This means that the government can order as much or as little as it needs, depending on changing circumstances and demands, while also setting a cap on the total quantity to be procured.

The adaptability of IDIQ contracts makes them particularly useful for situations where the exact quantity of required goods or services cannot be determined at the time of contract award. Additionally, these contracts support ongoing relationships with suppliers, allowing for prompt responses to changing requirements without the need for frequent new solicitations or contracts.

This structure is fundamentally different from other types of contracts, such as those for a fixed quantity of products or those limited to a single delivery date, making the correct choice clearly aligned with the core definition and purpose of IDIQ contracts.