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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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38 sections with “Changes—Fixed-Price”

  • FAR 52.243-1 Changes—Fixed-Price.
    …rt the following clause. The 30-day period may be varied according to agency procedures. Changes—Fixed-Price (AUG 1987) (a) The Contracting Officer may at any time, by written order, and without notice to the sureties, if any, make change…
  • FAR 30.604 Processing changes to disclosed or established cost accounting practices.
    (a) Scope. This section applies to required, unilateral, and desirable changes in cost accounting practices. (b) Procedures. Upon receipt of the contractor's notification and description of the change in cost accounting practice, the CFAO …
  • 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 15.408 Solicitation provisions and contract clauses.
    (a) Changes or Additions to Make-or-Buy Program. The contracting officer shall insert the clause at 52.215-9, Changes or Additions to Make-or-Buy Program, in solicitations and contracts when it is contemplated that a make-or- buy program wi…
  • FAR 42.302 Contract administration functions.
    …ernment property— (i) Evaluate the contractor's requests for Government property and for changes to existing Government property and provide appropriate recommendations to the contracting officer; (ii) Ensure required screening of Governm…
  • FAR 52.232-5 Payments Under Fixed-Price Construction Contracts.
    …nd under the terms of the contract, such as contract modifications issued pursuant to the Changes clause, or funding and other administrative changes. (j) Interest computation on unearned amounts. In accordance with 31 U.S.C. 3903(c)(1), t…
  • FAR 52.232-10 Payments Under Fixed-Price Architect-Engineer Contracts.
    …nd under the terms of the contract, such as contract modifications issued pursuant to the Changes clause, or funding and other administrative changes. (End of clause)
  • FAR 15.404-1 Proposal analysis techniques.
    …, or requiring minor modifications for commercial products, to ascertain the magnitude of changes required and to assist in pricing the required changes. (iii) Use of parametric estimating methods/application of rough yardsticks (such as d…
  • FAR 30.606 Resolving cost impacts.
    …ss all of the cost impacts are increased costs to Government: (A) One or more unilateral changes. (B) One or more noncompliances. (C) Unilateral changes and noncompliances; and (iii) May consider the cost impacts of a unilateral change …
  • FAR 52.245-1 Government Property.
    …r has the option to take over under any type of contract, e.g., as a result either of any changes in the specifications or plans thereunder or of the termination of the contract (or subcontract thereunder), before completion of the work, fo…
  • FAR 15.407-2 Make-or-buy programs.
    …t these items or efforts, when identifiable, shall be added under the clause at 52.215-9, Changes or Additions to Make-or-Buy Program. (2) Contracting officers normally shall not agree to proposed “make items” when the products or services…
  • FAR 48.001 Definitions.
    …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 52.215-23 Limitations on Pass-Through Charges.
    … of the contract or a subcontract. It includes but is not limited to purchase orders, and changes and modifications to purchase orders. Subcontractor, as defined in FAR 44.101, means any supplier, distributor, vendor, or firm that furnishe…
  • FAR 52.230-6 Administration of Cost Accounting Standards.
    …s and subcontracts. (B) Flexibly-priced contracts and subcontracts. (ii) For unilateral changes, the increased or decreased costs to the Government for each of the following groups: (A) Fixed-price contracts and subcontracts. (B) Flexib…
  • 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…
  • DFARS 252.204-7007 Alternate A, Annual Representations and Certifications.
    …s offer, and are incorporated in this offer by reference (see FAR 4.1201); except for the changes identified below [Offeror to insert changes, identifying change by provision number, title, date]. These amended representation(s) and/or cert…
  • FAR 32.001 Definitions.
    …the terms of the existing contract, such as contract modifications issued pursuant to the Changes clause, or funding and other administrative changes. Contract financing payment means an authorized Government disbursement of monies to a co…
  • FAR 52.204-8 Annual Representations and Certifications.
    …is offer and are incorporated in this offer by reference (see FAR 4.1201); except for the changes identified below [offeror to insert changes, identifying change by clause number, title, date]. These amended representation(s) and/or certifi…
  • FAR 52.248-3 Value Engineering—Construction.
    …d collateral costs, exlcusive of acquisition savings, whether or not the acquisition cost changes. Contractor's development and implementation costs, as used in this clause, means those costs the Contractor incurs on a VECP specifically in…
  • FAR 1.602-2 Responsibilities.
    …es at 42.302 by the contracting officer; (5) Has no authority to make any commitments or changes that affect price, quality, quantity, delivery, or other terms and conditions of the contract nor in any way direct the contractor or its subc…
  • FAR 15.403-4 Requiring certified cost or pricing data (10 U.S.C. chapter 271 and 41 U.S.C. chapter 35).
    …,000,000 threshold). This requirement does not apply when unrelated and separately priced changes for which certified cost or pricing data would not otherwise be required are included for administrative convenience in the same modification.…
  • FAR 15.407-1 Defective certified cost or pricing data.
    …is reported in accordance with 42.1503(h). Agencies shall ensure updated information that changes a contracting officer's prior final determination is reported into the FAPIIS module of Contractor Performance Assessment Reporting System (CP…
  • FAR 16.104 Factors in selecting contract types.
    …x research and development contracts, when performance uncertainties or the likelihood of changes makes it difficult to estimate performance costs in advance. As a requirement recurs or as quantity production begins, the cost risk should sh…
  • FAR 16.203-3 Limitations.
    …ns in labor or material costs or to provide for contract price adjustment in the event of changes in the contractor's established prices.
  • FAR 16.203-4 Contract clauses.
    …racting officer shall— (i) Consider work in process and materials on hand at the time of changes in labor rates, including fringe benefits (if any) or material prices; (ii) Not include in adjustments any indirect cost (except fringe benef…
  • FAR 17.207 Exercise of options.
    …adjustment provision; or (5) A specific price that is subject to change as the result of changes to prevailing labor rates provided by the Secretary of Labor. (g) The contract modification or other written document which notifies the cont…
  • FAR 31.103 Contracts with commercial organizations.
    …etermination of price redetermination contracts (see 16.205 and 16.206); and (6) Pricing changes and other contract modifications.
  • FAR 31.105 Construction and architect-engineer contracts.
    …nated contracts; (4) Price revision of fixed-price incentive contracts; and (5) Pricing changes and other contract modifications. (d) Except as otherwise provided in this paragraph (d), the allowability of costs for construction and arch…
  • FAR 32.503-6 Suspension or reduction of payments.
    …ble portion of the contractor's accounting system shall be suspended) until the necessary changes have been made. (2) If the contractor fails to comply with the contract without fault or negligence, the contracting officer will not take ac…
  • 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 52.244-2 Subcontracts.
    …prime contract or a subcontract. It includes, but is not limited to, purchase orders, and changes and modifications to purchase orders. (b) When this clause is included in a fixed-price type contract, consent to subcontract is required onl…
  • DFARS 225.870-4 Contracting procedures.
    …of the contract, provided the Corporation's approval is obtained on any matters involving changes to the contract. (c) Requirement for data other than certified cost or pricing data. (1) DoD has waived the requirement for submission of cer…
  • DFARS 242.7302 Requirements.
    …in the contractor's insurance/pension program. (2) The contractor proposes or implements changes in its insurance, pension, or deferred compensation plans. (3) The contractor is involved in a merger, acquisition, or divestiture. (4) The …
  • DFARS 252.211-7003 Item Unique Identification and Valuation.
    …ifferentiating between items having the same basic name and to indicate modifications and changes thereto. Unique item identifier means a set of data elements marked on items that is globally unique and unambiguous. The term includes a con…
  • DFARS 252.227-7013 Rights in Technical Data—Other Than Commercial Products and Commercial Services.
    …aining purposes (other than detailed manufacturing or process data); (vi) Corrections or changes to technical data furnished to the Contractor by the Government; (vii) Otherwise publicly available or have been released or disclosed by the…
  • 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…
  • DFARS 252.242-7004 Material Management and Accounting System.
    …shed MMAS policies, procedures, and operating instructions; and (3) Disclose significant changes in its MMAS to the ACO at least 30 days prior to implementation. (d) System criteria. The MMAS shall have adequate internal controls to ensur…

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.