FAR 16.304—Cost-plus-incentive-fee contracts.
Plain-English Summary
FAR 16.304 defines the cost-plus-incentive-fee (CPIF) contract and places it within the broader framework of incentive contracting. This section explains that a CPIF contract is a cost-reimbursement contract with an initially negotiated fee that is later adjusted by a formula tied to the relationship between total allowable costs and total target costs. It also points readers to subpart 16.4 for the general rules on incentive contracts, to FAR 16.405-1 for a fuller discussion of when and how CPIF contracts should be used, and to FAR 16.301-3 for applicable limitations. In practice, this section matters because it tells contracting officers and contractors that the fee is not fixed at award; instead, it moves up or down based on actual cost performance against the target. That makes CPIF contracts useful when the government wants to motivate cost control while still using a cost-reimbursement structure for work that cannot be priced with enough certainty at the outset. The section is short, but it is foundational because it defines the contract type and directs users to the more detailed rules that govern its proper application.
Key Rules
CPIF is cost-reimbursement
A cost-plus-incentive-fee contract is a type of cost-reimbursement contract, not a fixed-price contract. The government reimburses allowable costs, and the contractor’s fee is subject to later adjustment under the incentive formula.
Fee is initially negotiated
The contract starts with an agreed fee amount, but that fee is only provisional. The final fee is determined later based on how total allowable costs compare with total target costs under the negotiated formula.
Fee adjusts by formula
The incentive mechanism must be based on a formula that links fee changes to the cost outcome. If actual allowable costs differ from target costs, the fee increases or decreases according to the contract’s stated terms.
Use subpart 16.4
CPIF contracts are governed within the broader incentive-contract framework in subpart 16.4. Users must apply the general incentive-contract principles in addition to the definition in this section.
See 16.405-1 for application
This section is only a definition and cross-reference; it does not explain when CPIF is appropriate in detail. FAR 16.405-1 provides the fuller guidance on structure, use, and administration of CPIF contracts.
Check limitations in 16.301-3
The use of CPIF contracts is subject to the limitations in FAR 16.301-3. Contracting officers must confirm that the contemplated use of a cost-reimbursement arrangement is permitted before selecting this contract type.
Responsibilities
Contracting Officer
Determine whether a CPIF contract is appropriate, ensure the arrangement fits within the limitations on cost-reimbursement contracting, and structure the incentive formula so the fee adjustment is tied to allowable costs versus target costs.
Contractor
Perform the work while tracking and supporting allowable costs, understanding that the final fee will change based on actual cost performance against the target cost and the contract’s formula.
Agency
Use CPIF contracts only when the acquisition circumstances justify a cost-reimbursement incentive structure and ensure internal policy and FAR limitations are followed.
Contracting Activity/Acquisition Team
Support development of realistic target costs, fee arrangements, and incentive terms, and coordinate review of the contract type against the broader rules in subpart 16.4 and FAR 16.301-3.
Practical Implications
CPIF contracts are used when the government wants to encourage cost control but cannot define the work well enough for a fixed-price contract.
The target cost and incentive formula are critical; if they are unrealistic or poorly drafted, the incentive effect can be weak or disputes can arise over fee adjustment.
Contractors should expect close scrutiny of allowable costs because fee outcomes depend on the relationship between actual allowable costs and target costs.
Contracting officers should not treat this section as a complete guide; they must also consult FAR 16.405-1 and the limitations in FAR 16.301-3 before using CPIF.
A common pitfall is assuming the fee is fixed once negotiated; in a CPIF contract, the fee is intentionally variable and must be administered accordingly.
Official Regulatory Text
A cost-plus-incentive-fee contract is a cost-reimbursement contract that provides for an initially negotiated fee to be adjusted later by a formula based on the relationship of total allowable costs to total target costs. Cost-plus-incentive-fee contracts are covered in subpart 16.4 , Incentive Contracts. See 16.405-1 for a more complete description and discussion of application of these contracts. See 16.301-3 for limitations.