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48 CFR · Federal Acquisition Regulation and Defense supplement

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The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.

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93 sections with “FAR part 31”: the first 40

  • FAR 15.408 Solicitation provisions and contract clauses.
    … consistent with your established estimating and accounting principles and procedures and FAR Part 31, Cost Principles, and, if not, an explanation; (9) The following statement: This proposal reflects our estimates and/or actual costs as o…
  • FAR 52.202-1 Definitions.
    …ontract clause uses a word or term that is defined in the Federal Acquisition Regulation (FAR), the word or term has the same meaning as the definition in FAR 2.101 in effect at the time the solicitation was issued, unless— (a) The solicit…
  • DFARS 225.7303-2 Cost of doing business with a foreign government or an international organization.
    …e, but are not limited to, the following: (1) Selling expenses (not otherwise limited by FAR Part 31), such as— (i) Maintaining international sales and service organizations; (ii) Sales commissions and fees in accordance with FAR Subpart…
  • FAR 2.101 Definitions.
    …ection, has the same meaning throughout this chapter (the Federal Acquisition Regulation (FAR)) unless the context in which the word or term is used clearly requires a different meaning or another FAR part, subpart, or section provides a di…
  • FAR 31.205-46 Travel costs.
    …Name of person on trip and that person's title or relationship to the contractor. (b) Airfare costs in excess of the lowest priced airfare available to the contractor during normal business hours are unallowable except when such accommodat…
  • FAR 31.603 Requirements.
    …cer authorizing in advance such payments in accordance with applicable regulations in the FAR or an executive agency supplement to the FAR. (5) Costs of any membership in any social, dining, or country club or organization. (6) Costs of a…
  • FAR 52.203-12 Limitation on Payments to Influence Certain Federal Transactions.
    …this clause— Agency means executive agency as defined in Federal Acquisition Regulation (FAR) 2.101. Covered Federal action means any of the following actions: (1) Awarding any Federal contract. (2) Making any Federal grant. (3) Making…
  • FAR 52.212-3 Offeror Representations and Certifications—Commercial Products and Commercial Services.
    …this offer that the representations and certifications currently posted electronically at FAR 52.212-3, Offeror Representations and Certifications—Commercial Products and Commercial Services, have been entered or updated in the last 12 mont…
  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    …a dispute to be resolved in accordance with the clause at Federal Acquisition Regulation (FAR) 52.233-1, Disputes, which is incorporated herein by reference. The Contractor shall proceed diligently with performance of this contract, pending…
  • FAR 52.212-5 Contract Terms and Conditions Required To Implement Statutes or Executive Orders—Commercial Products and Commercial Services.
    …2026) (a) The Contractor shall comply with the following Federal Acquisition Regulation (FAR) clauses, which are incorporated in this contract by reference, to implement provisions of law or Executive orders applicable to acquisitions of c…
  • FAR 52.213-4 Terms and Conditions—Simplified Acquisitions (Other Than Commercial Products and Commercial Services).
    …2026) (a) The Contractor shall comply with the following Federal Acquisition Regulation (FAR) clauses that are incorporated by reference: (1) The clauses listed below implement provisions of law or Executive order: (i) 52.203-19, Prohibi…
  • FAR 52.215-23 Limitations on Pass-Through Charges.
    …y orders). Subcontract means any contract, as defined in Federal Acquisition Regulation (FAR) 2.101, entered into by a subcontractor to furnish supplies or services for performance of the contract or a subcontract. It includes but is not l…
  • FAR 52.216-7 Allowable Cost and Payment.
    …e allowable by the Contracting Officer in accordance with Federal Acquisition Regulation (FAR) subpart 31.2 in effect on the date of this contract and the terms of this contract. The Contractor may submit to an authorized representative of …
  • FAR 52.219-9 Small Business Subcontracting Plan.
    … that satisfies the definition of “commercial product” in Federal Acquisition Regulation (FAR) 2.101. Commercial service means a service that satisfies the definition of “commercial service” in FAR 2.101. Electronic Subcontracting Reporti…
  • FAR 52.232-16 Progress Payments.
    …will consider cost of money that would be allowable under Federal Acquisition Regulation (FAR) 31.205-10 as an incurred cost for progress payment purposes. (2) The amount of financing and other payments for supplies and services purchased …
  • FAR 52.244-6 Subcontracts for Commercial Products and Commercial Services.
    …ailable off-the-shelf item have the meanings contained in Federal Acquisition Regulation (FAR) 2.101. Subcontract includes a transfer of commercial products or commercial services between divisions, subsidiaries, or affiliates of the Contr…
  • DFARS 201.402 Policy.
    …P), is the approval authority within DoD for any individual or class deviation from— (i) FAR 3.104, Procurement Integrity, or DFARS 203.104, Procurement Integrity; (ii) FAR subpart 27.4, Rights in Data and Copyrights, or DFARS subpart 227…
  • DFARS 212.301 Solicitation provisions and contract clauses for the acquisition of commercial products and commercial services.
    …ollowing additional provisions and clauses apply to DoD solicitations and contracts using FAR part 12 procedures for the acquisition of commercial products and commercial services. If the offeror has completed any of the following provision…
  • DFARS 231.205-70 External restructuring costs.
    …ubsection; instead, the normal rules for determining cost allowability in accordance with FAR part 31 shall apply. (5) Restructuring savings means cost reductions, including both direct and indirect cost reductions, that result from restru…
  • DFARS 252.219-7003 Small Business Subcontracting Plan (DoD Contracts).
    …ordinator. (g) Include the clause at Defense Federal Acquisition Regulation Supplement (DFARS) 252.219-7004, Small Business Subcontracting Plan (Test Program), in subcontracts with subcontractors that participate in the Test Program descri…
  • DFARS 252.219-7004 Small Business Subcontracting Plan (Test Program).
    … business concern, or small disadvantaged business concern, as these terms are defined in FAR 2.101. Electronic Subcontracting Reporting System (eSRS) means the Governmentwide, electronic, web-based system for small business subcontracting…
  • DFARS 252.235-7002 Animal welfare.
    As prescribed in 235.072(a), use the following clause: Animal Welfare (DEC 2014) (a)(1) The Contractor shall register its research, development, test, and evaluation or training facility with the Secretary of Agriculture in accordance wit…
  • DFARS 252.249-7000 Special termination costs.
    … in the following categories as defined in part 31 of the Federal Acquisition Regulation (FAR)— (1) Severance pay, as provided in FAR 31.205-6(g); (2) Reasonable costs continuing after termination, as provided in FAR 31.205-42(b); (3) Se…
  • FAR 13.005 List of laws inapplicable to contracts and subcontracts at or below the simplified acquisition threshold.
    …Free Workplace), except for individuals. (b) The Federal Acquisition Regulatory Council (FAR Council) will include any law enacted after October 13, 1994, that sets forth policies, procedures, requirements, or restrictions for the acquisit…
  • FAR 40.202-4 Exemptions.
    …e sole purposes of research, evaluation, training, testing, or analysis for electronic warfare, information warfare operations, cybersecurity, or development of unmanned aircraft system or counter-unmanned aircraft system technology; (2) I…
  • FAR 52.216-17 Incentive Price Revision—Successive Targets.
    …, means allowable costs in accordance with part 31 of the Federal Acquisition Regulation (FAR) in effect on the date of this contract. (c) Submitting data for establishing the firm fixed price or a final profit adjustment formula. (1) With…
  • FAR 52.216-25 Contract Definitization.
    …ontract that will include (1) all clauses required by the Federal Acquisition Regulation (FAR) on the date of execution of the letter contract, (2) all clauses required by law on the date of execution of the definitive contract, and (3) any…
  • DFARS 225.7303-4 Contingent fees.
    …agency maintained by the prospective contractor for the purpose of securing business (see FAR Part 31 and FAR Subpart 3.4); and (2) The contracting officer determines that the fees are fair and reasonable. (b)(1) Under DoD 5105.38-M, LOAs…
  • DFARS 242.1204 Applicability of novation agreements.
    …f the novation agreement instead of the paragraph (b)(7) provided in the sample format at FAR 42.1204(i): “(7)(i) Except as set forth in subparagraph (7)(ii) below, the Transferor and the Transferee agree that the Government is not obligat…
  • DFARS 252.217-7027 Contract Definitization.
    …tract that will include— (1) All clauses required by the Federal Acquisition Regulation (FAR) on the date of execution of the undefinitized contract action; (2) All clauses required by law on the date of execution of the definitive contra…
  • DFARS 252.242-7006 Accounting System Administration.
    … contracts of amounts which are not allowable in terms of Federal Acquisition Regulation (FAR) part 31, Contract Cost Principles and Procedures, and other contract provisions; (13) Identification of costs by contract line item and by units…
  • DFARS 252.243-7001 Pricing of contract modifications.
    … any price adjustment under this contract, the contract cost principles and procedures in FAR part 31 and DFARS part 231, in effect on the date of this contract, apply. (End of clause)
  • DFARS 252.246-7007 Contractor Counterfeit Electronic Part Detection and Avoidance System.
    …corrective action that may be required to remedy the use or inclusion of such parts (see DFARS 231.205-71). (c) System criteria. A counterfeit electronic part detection and avoidance system shall include risk-based policies and procedures …
  • FAR 7.105 Contents of written acquisition plans.
    …ttainment of the acquisition objectives (see subpart 15.3). When an EVMS is required (see FAR 34.202(a)) and a preaward IBR is contemplated, the acquisition plan must discuss— (i) How the pre-award IBR will be considered in the source sele…
  • FAR 17.502-2 The Economy Act.
    …agencies to enter into agreements to obtain supplies or services from another agency. The FAR applies when one agency uses another agency's contract to obtain supplies or services. If the interagency business transaction does not result in …
  • FAR 31.205-6 Compensation for personal services.
    … postretirement health care; life insurance provided outside a pension plan; and other welfare benefits such as tuition assistance, day care, legal services, and housing subsidies provided after retirement. (2) To be allowable, PRB costs s…
  • FAR 31.205-13 Employee morale, health, welfare, food service, and dormitory costs and credits.
    (a) Aggregate costs incurred on activities designed to improve working conditions, employer-employee relations, employee morale, and employee performance (less income generated by these activities) are allowable, subject to the limitations …
  • FAR 34.202 Integrated Baseline Reviews.
    …ermitted, reimbursement of offerors' pre-award IBR costs is governed by the provisions of FAR Part 31.
  • FAR 52.203-13 Contractor Code of Business Ethics and Conduct.
    …oyees with information; (2) Does not foreclose any Contractor rights arising in law, the FAR, or the terms of the contract. It does not require— (i) A Contractor to waive its attorney-client privilege or the protections afforded by the at…
  • FAR 52.215-15 Pension adjustments and asset reversions.
    …AS covered contracts and subcontracts that are subject to Federal Acquisition Regulation (FAR) Subpart 31.2 or for which certified cost or pricing data were submitted. (c) For all other situations where assets revert to the Contractor, or …

FAR (chapter 1)

DFARS (chapter 2, Defense)

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.