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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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16 sections with “Changes and Changed Conditions”

  • FAR 52.243-5 Changes and Changed Conditions.
    As prescribed in 43.205(e), insert the following clause: Changes and Changed Conditions (APR 1984) (a) The Contracting Officer may, in writing, order changes in the drawings and specifications within the general scope of the contract. (b…
  • FAR 52.243-2 Changes—Cost-Reimbursement.
    …rt the following clause. The 30-day period may be varied according to agency procedures. Changes—Cost-Reimbursement (AUG 1987) (a) The Contracting Officer may at any time, by written order, and without notice to the sureties, if any, make…
  • FAR 52.243-3 Changes—Time-and-Materials or Labor-Hours.
    As prescribed in 43.205(c), insert the following clause: Changes—Time-and-Materials or Labor-Hours (SEP 2000) (a) The Contracting Officer may at any time, by written order, and without notice to the sureties, if any, make changes within t…
  • FAR 43.205 Contract clauses.
    (a)(1) The contracting officer shall insert the clause at 52.243-1, Changes—Fixed-Price, in solicitations and contracts when a fixed-price contract for supplies is contemplated. (2) If the requirement is for services, other than architect-…
  • FAR 31.205-6 Compensation for personal services.
    … or within a reasonable period after it, an opportunity to review the allowability of the changes. (5) Costs that are unallowable under other paragraphs of this Subpart 31.2 are not allowable under this subsection 31.205-6 solely on the ba…
  • FAR 52.243-7 Notification of Changes.
    As prescribed in 43.107, insert the following clause: Notification of Changes (JAN 2017) (a) Definitions. Contracting Officer, as used in this clause, does not include any representative of the Contracting Officer. Specifically Authoriz…
  • FAR 52.216-7 Allowable Cost and Payment.
    …M) Listing of decisions/agreements/approvals and description of accounting/organizational changes. (N) Certificate of final indirect costs (see 52.242-4, Certification of Final Indirect Costs). (O) Contract closing information for contrac…
  • DFARS 252.227-7014 Rights in Other Than Commercial Computer Software and Other Than Commercial Computer Software Documentation.
    …oftware documentation required to be delivered under this contract; (iii) Corrections or changes to computer software or computer software documentation furnished to the Contractor by the Government; (iv) Computer software or computer sof…
  • DFARS 252.227-7018 Rights in Other Than Commercial Technical Data and Computer Software—Small Business Innovation Research Program and Small Business Technology Transfer Program.
    …ining purposes (other than detailed manufacturing or process data); (iii) Corrections or changes to Government-furnished technical data or computer software; (iv) Otherwise publicly available or have been released or disclosed by the Cont…
  • FAR 52.248-1 Value Engineering.
    …d collateral costs, exclusive of acquisition savings, whether or not the acquisition cost changes. Contracting office includes any contracting office that the acquisition is transferred to, such as another branch of the agency or another a…
  • FAR 2.101 Definitions.
    …er, signed by the contracting officer, directing the contractor to make a change that the Changes clause authorizes the contracting officer to order without the contractor's consent. Chief Acquisition Officer means an executive level acqui…
  • FAR 16.703 Basic ordering agreements.
    … administrative lead-time, inventory investment, and inventory obsolescence due to design changes. (c) Limitations. A basic ordering agreement shall not state or imply any agreement by the Government to place future contracts or orders wit…
  • FAR 28.308 Self-insurance.
    …ed a program, the contractor must submit to that official for approval any major proposed changes to the program. Any program approval may be withdrawn if a contracting officer finds that either (1) any part of a program does not comply wit…
  • FAR 32.503-9 Liquidation rates—alternate method.
    …ss payments. (2) The rate shall be increased or decreased in keeping with the successive changes to the contract price or target profit when— (i) The target profit is changed under a fixed-price incentive contract with successive targets;…
  • FAR 52.215-1 Instructions to Offerors—Competitive Acquisition.
    …additional administrative costs, it is in the Government's best interest to do so. (7) Exchanges with offerors after receipt of a proposal do not constitute a rejection or counteroffer by the Government. (8) The Government may determine t…
  • FAR 52.227-11 Patent Rights—Ownership by the Contractor.
    …ctor's licensing program and decisions regarding small business applicants, and negotiate changes to its licensing policies, procedures, or practices with the Secretary of Commerce when the Secretary's review discloses that the Contractor c…

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.