Glossary
IDIQ contract
An indefinite delivery, indefinite quantity (IDIQ) contract is an umbrella agreement: the agency competes and awards it once, establishing scope, rates and terms, then issues task orders or delivery orders against it as needs arise. The government commits to order at least a stated minimum and cannot exceed a stated maximum.
Under FAR Subpart 16.5, the minimum must be more than nominal but no more than the government is fairly certain to order, and the contracting officer sets a realistic maximum based on market research. Where multiple firms hold the same IDIQ, each generally gets a fair opportunity to compete for orders.
The short version
- Winning an IDIQ is winning the right to compete, not the work. Revenue comes from task orders.
- The guaranteed minimum can be very small, sometimes a few thousand dollars against a ceiling in the millions.
- Multiple-award IDIQs mean a second competition at the task-order level, usually faster and cheaper to pursue.
- The ceiling is a shared pool across all holders, not an allocation to each.
Why it matters to a bidder
The economics of an IDIQ pursuit are different from a single job. You are spending full proposal cost for an option, so evaluate it that way:
- Ask how many awards. A single-award IDIQ is worth far more than a seat on a twelve-firm bench.
- Ask about historical spend. Prior-cycle order volume, obtainable through a public records request, is the only honest forecast.
- Your rates are locked for years. Confirm whether there is an escalation clause before you price a five-year labor schedule.
- Staff for order response. Task-order turnarounds can be under two weeks.
Work the numbers against what it costs you to bid before committing.
A real example
A transit authority awards a five-year on-call civil engineering IDIQ with a $25 million ceiling to six firms, each guaranteed a $10,000 minimum. Over the term, two firms capture most of the orders because they staffed a dedicated responder for task-order requests. The other four collect close to their minimums. All six paid roughly the same to pursue the master contract.
How state and local differs from federal
IDIQ is federal terminology from the FAR. State and local agencies buy the same way but call it something else: on-call, master agreement, continuing services contract, indefinite quantity contract, annual requirements contract, or in construction a job order contract. A state term contract is essentially a statewide IDIQ.
Two practical differences: local versions often lack the FAR's fair-opportunity rule, so orders can be assigned by rotation or by the project manager's choice; and guaranteed minimums are sometimes omitted entirely, which in some states raises questions about whether the agreement is an enforceable contract or merely a list of prequalified firms.
Common questions
Does an IDIQ guarantee me work?
Only the stated minimum, which is often trivial. Everything above it is competed or assigned at the agency's discretion.
What is the difference between a task order and a delivery order?
Task orders buy services; delivery orders buy supplies. The mechanics are the same.
Can new firms be added mid-term?
Some agencies run on-ramps at set intervals. Ask, and calendar the next one if you miss the initial award.
Is an IDIQ the same as a cooperative contract?
No. An IDIQ is one agency's master contract. A cooperative contract is competed by one entity for many others to use.