FAR Part 17: Special Contracting Methods

In plain English

FAR Part 17 covers special contracting methods such as multi-year contracting, options, leader company contracting, interagency acquisitions, management and operating contracts, and reverse auctions. These methods can offer flexibility and cost savings but come with specific rules and limitations that contractors must understand when bidding or performing.

Key rules

• Multiyear contracting allows acquisition of known requirements for up to 5 years, even if total funds are not available at award, and may be used in sealed bidding or negotiation. (17.104)
• For agencies other than DoD, NASA, and the Coast Guard, a multiyear contract with a cancellation ceiling over $20 million requires congressional notification before award. (17.108)
• Options may be included in contracts when in the Government's interest, but the contract must specify limits on additional supplies or services and the period for exercising the option. (17.202, 17.204)
• When exercising an option, the contracting officer must provide written notice within the time period specified in the contract. (17.207)
• Leader company contracting is an extraordinary technique used only when no other source can meet requirements without assistance, and the leader company must furnish essential production know-how to follower companies. (17.401, 17.402)
• Interagency acquisitions are commonly conducted through indefinite-delivery contracts such as Federal Supply Schedules, Governmentwide acquisition contracts, and multi-agency contracts. (17.501)
• Reverse auctions may be used when market research indicates a competitive marketplace, multiple offerors can satisfy the requirement, and the nature of the supplies or services encourages iterative bidding. (17.802)
• Reverse auctions shall not be used for design-build construction, architect-engineer services, sealed bidding, or acquisition of personal protective equipment. (17.803)

Who does what

In practice

• Multiyear contracts can provide stable, long-term work but may include cancellation clauses that allow the Government to terminate for lack of funds.
• Options give the Government the right, but not the obligation, to extend the contract; contractors should price options carefully as they may be evaluated at award.
• Interagency acquisitions allow agencies to use other agencies' contracts, so contractors may see orders from various agencies under one contract vehicle.
• Reverse auctions can be used for competitive pricing, but are prohibited for certain types of work like design-build construction and architect-engineer services.

Common pitfalls

• Assuming that a multiyear contract guarantees funding for all years; cancellation may occur if funds are not appropriated.
• Failing to read option provisions carefully; options may be evaluated and exercised, affecting the total contract value.
• Using reverse auctions for prohibited acquisitions such as design-build construction or personal protective equipment.
• Not complying with interagency acquisition procedures, such as written agreements and reporting requirements.

Written by AI from this part's codified text (2026-10-04); cited sections are checked against the part. A guide, not legal advice: the regulation text, the solicitation and your contract rule.