Title 41Public ContractsRelease 119-73

§3905 Cost contracts

Title 41 › Subtitle Subtitle I— - Federal Procurement Policy › Chapter CHAPTER 39— - SPECIFIC TYPES OF CONTRACTS › § 3905

Last updated Apr 6, 2026|Official source

Summary

Percentage-of-cost contracts are banned. Cost-plus-fixed-fee contracts have fee limits: 10% normally, 15% for experimental, developmental, or research work, and 6% for architectural/engineering on public works/utility projects, as set by agency head at contract entry. Contractors must notify agency before cost-plus-fixed-fee subcontracts or before fixed-price subcontracts or purchase orders that exceed the simplified acquisition threshold or 5% of the prime contract’s estimated cost; the agency may inspect plans and audit books and records of the prime contractor or subcontractors.

Full Legal Text

Title 41, §3905

Public Contracts — Source: USLM XML via OLRC

(a)The cost-plus-a-percentage-of-cost system of contracting shall not be used.
(b)(1)Except as provided in paragraphs (2) and (3), the fee in a cost-plus-a-fixed-fee contract shall not exceed 10 percent of the estimated cost of the contract, not including the fee, as determined by the agency head at the time of entering into the contract.
(2)The fee in a cost-plus-a-fixed-fee contract for experimental, developmental, or research work shall not exceed 15 percent of the estimated cost of the contract, not including the fee.
(3)The fee in a cost-plus-a-fixed-fee contract for architectural or engineering services relating to any public works or utility project may include the contractor’s costs and shall not exceed 6 percent of the estimated cost, not including the fee, as determined by the agency head at the time of entering into the contract, of the project to which the fee applies.
(c)All cost and cost-plus-a-fixed-fee contracts shall provide for advance notification by the contractor to the procuring agency of any subcontract on a cost-plus-a-fixed-fee basis and of any fixed-price subcontract or purchase order which exceeds in dollar amount either the simplified acquisition threshold or 5 percent of the total estimated cost of the prime contract.
(d)A procuring agency, through any authorized representative thereof, has the right to inspect the plans and to audit the books and records of a prime contractor or subcontractor engaged in the performance of a cost or cost-plus-a-fixed-fee contract.

Legislative History

Notes & Related Subsidiaries

Historical and Revision Notes

Revised SectionSource (U.S. Code)Source (Statutes at Large) 3905(a)41:254(b) (1st sentence words before 1st comma).June 30, 1949, ch. 288, title III, § 304(b), 63 Stat. 395; July 12, 1952, ch. 703, § 1(m), 66 Stat. 594; Pub. L. 103–355, title I, § 1071, title IV, § 4402(c), title X, § 10005(e), Oct. 13, 1994, 108 Stat. 3270, 3349, 3408. 3905(b)41:254(b) (1st sentence words after 1st comma). 3905(c)41:254(b) (last sentence words before semicolon). 3905(d)41:254(b) (last sentence words after semicolon).

Reference

Citations & Metadata

Citation

41 U.S.C. § 3905

Title 41Public Contracts

Last Updated

Apr 6, 2026

Release point: 119-73