FAR 16.206—Fixed-ceiling-price contracts with retroactive price redetermination.

Description.

FAR 16.206-1 describes the basic structure of a fixed-ceiling-price contract with retroactive price redetermination. This section covers two core features: a fixed ceiling price that limits the Government’s payment exposure, and a later, retroactive redetermination of the final price after the contract is completed. In practice, the clause is used when the parties need a firm upper limit during performance but cannot determine the final fair price in advance with enough confidence to use a fully fixed-price arrangement. The section matters because it tells contractors and contracting officers that the contract price is not finally settled at award, even though the ceiling is binding, and that the final amount will be adjusted after completion based on the redetermination process. It is a risk-allocation tool: the contractor bears the risk of costs above the ceiling, while both parties accept that the final price will be established later within that ceiling. Understanding this structure is important for pricing, accounting, cash flow, and closeout because the ceiling controls payment during performance, but the final contract price remains open until redetermination is completed.

Application.

FAR 16.206-2 explains when a fixed-ceiling-price contract with retroactive price redetermination may be used and what must happen before award. It is aimed at research and development contracts at or below the simplified acquisition threshold when the government and contractor cannot negotiate a fair and reasonable firm fixed price at the outset, and when the dollar amount and short performance period make other fixed-price contract types impracticable. The section also addresses how to set the ceiling price, when that ceiling may be changed, how the billing price should be negotiated, and what the contracting officer must communicate to the contractor about how performance will be evaluated in the later price redetermination. In practice, this is a narrow, specialized contract type used only when normal fixed-price approaches do not fit the circumstances. Its purpose is to allow award to proceed despite pricing uncertainty while still protecting the government through a negotiated ceiling and later retroactive price adjustment based on the contractor’s actual performance and management effectiveness.

Limitations.

FAR 16.206-3 sets strict limits on when a contract with price redetermination may be used. It covers four specific conditions: the contract must be for research and development, the estimated cost must be at or below the simplified acquisition threshold, the contractor must have an accounting system adequate for price redetermination, and there must be reasonable assurance that the redetermination will occur promptly at the specified time. It also requires written approval by the head of the contracting activity, or a higher-level official if agency procedures require it. The purpose of these limits is to reserve this contract type for narrow, low-dollar R&D situations where cost uncertainty exists but can still be managed responsibly. In practice, this section protects the Government from using a specialized pricing arrangement unless the administrative controls, timing, and approval level are all in place.

Contract clause.

FAR 16.206-4 tells contracting officers when they must include the Price Redetermination-Retroactive clause at FAR 52.216-6 in negotiated solicitations and contracts. This section is narrow but important: it applies only when a fixed-price contract is contemplated and the conditions in FAR 16.206-2 and 16.206-3(a) through (d) are met. In practice, it links the decision to use a retroactive price redetermination arrangement to the specific circumstances that justify it, and it makes the clause mandatory once those conditions exist. The purpose is to ensure the contract contains the mechanism needed to later adjust the price retroactively based on the required redetermination process. For contractors, this means the final price is not fully settled at award and may change later under the clause’s terms. For contracting officers, it means they must recognize when the regulatory prerequisites are present and include the correct clause in both the solicitation and the contract.