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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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156 sections with “modified”: the first 40

  • DFARS 215.404-72 Modified weighted guidelines method for nonprofit organizations other than FFRDCs.
    …e a fee objective for covered actions using the weighted guidelines method in 215.404-71, modified as described in paragraph (b)(1) of this subsection.
  • DFARS 227.7105-3 Acquisition of modified existing works.
    …e the clause at 252.227-7020, Rights in Special Works, in solicitations and contracts for modified existing works in lieu of the clause at 252.227-7021, Rights in Data—Existing Works.
  • FAR 30.603-1 Required changes.
    …remain in compliance (for reasons other than a contract award) or to comply with a new or modified standard, the clause at 52.230-6, Administration of Cost Accounting Standards, requires the contractor to— (i) Submit a description of the c…
  • DFARS 252.239-7013 Term of Agreement and Continuation of Services.
    …ation. (c) Communication service authorizations issued under this basic agreement may be modified to incorporate the terms and conditions of a new basic agreement negotiated with the Contractor. (End of clause) Alternate I. As prescribed…
  • FAR 22.404-6 Modifications of wage determinations.
    …mination for the primary site of the work in a solicitation is determined by the date the modified wage determination is published on the Wage Determinations at SAM.gov, or by the date the agency receives actual written notice of the modifi…
  • FAR 52.230-1 Cost Accounting Standards Notices and Certification.
    …ution, Part II does not apply unless the contemplated contract will be subject to full or modified CAS coverage pursuant to 48 CFR 9903.201-2(c)(5) or 9903.201-2(c)(6), respectively. I. Disclosure Statement—Cost Accounting Practices and Ce…
  • DFARS 252.227-7014 Rights in Other Than Commercial Computer Software and Other Than Commercial Computer Software Documentation.
    … definition; (4) Modify computer software provided that the Government may— (i) Use the modified software only as provided in paragraphs (1) and (3) of this definition; and (ii) Not release or disclose the modified software except as pro…
  • 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.
    … definition; (4) Modify computer software provided that the Government may— (i) Use the modified software only as provided in paragraphs (1) and (3) of this definition; and (ii) Not release or disclose the modified software except as pro…
  • DFARS 252.227-7041 Additional postaward requirements for Small Business Technology Transfer Program.
    … to its written agreement with the research institution, unless the written agreement, as modified, contains— (1) A specific allocation of ownership, rights, and responsibilities for intellectual property (including inventions, patents, te…
  • FAR 22.605 Rulings and interpretations of the statute.
    …and interpretations is as follows: (1) If a contract for $20,000 or less is subsequently modified to exceed $20,000, the contract becomes subject to the statute for work performed after the date of the modification. (2) If a contract for …
  • FAR 27.303 Contract clauses.
    …ent. When necessary to effectuate a treaty or agreement, Alternate I may be appropriately modified. (4) Use the clause with its Alternate II in contracts that may be affected by existing or future treaties or agreements. (5) Use the claus…
  • FAR 27.404-2 Limited rights data and restricted computer software.
    …ed is inoperative; (iii) Reproduced for safekeeping (archives) or backup purposes; (iv) Modified, adapted, or combined with other computer software, provided that the modified, adapted, or combined portions of the derivative software inco…
  • FAR 27.409 Solicitation provisions and contract clauses
    …otice of paragraph (g)(4) of the clause shall be specified in the contract and the notice modified accordingly. (5) Use the clause with its Alternate IV in contracts for basic or applied research (other than those for the management or ope…
  • FAR 31.205-18 Independent research and development and bid and proposal costs.
    … that are fully-CAS-covered shall be subject to all requirements of 48 CFR 9904.420. (2) Modified CAS-covered and non-CAS-covered contracts. Contracts that are not CAS-covered or that contain terms or conditions requiring modified CAS cove…
  • FAR 32.111 Contract clauses for noncommercial purchases.
    (a) The contracting officer shall insert the following clauses, appropriately modified with respect to payment due dates, in accordance with agency regulations— (1) The clause at 52.232-1, Payments, in solicitations and contracts when a fi…
  • FAR 32.501-3 Contract price.
    …le or subject to economic price adjustment, the contract price is the initial price until modified. (3) Under a fixed-price incentive contract, the contract price is the target price plus the not-to-exceed amount of unpriced modifications.…
  • FAR 52.227-14 Rights in Data—General.
    …(2) The time limits in the procedures set forth in paragraph (e)(1) of this clause may be modified in accordance with agency regulations implementing the Freedom of Information Act (5 U.S.C. 552) if necessary to respond to a request thereun…
  • FAR 3.103-2 Evaluating the certification.
    …ern. (b) Rejection of offers suspected of being collusive. (1) If the offeror deleted or modified paragraph (a)(1) or (3) or paragraph (b) of the certificate, the contracting officer shall reject the offeror's bid or proposal. (2) If the …
  • FAR 4.2304 Procedures.
    …e determination of the program office or requiring activity. (ii) If the contract is not modified within the time specified in paragraph (c)(2)(i) of this section, then the contract file shall be documented providing rationale why the cont…
  • FAR 10.001 Policy.
    …evelopmental items are available that— (A) Meet the agency's requirements; (B) Could be modified to meet the agency's requirements; or (C) Could meet the agency's requirements if those requirements were modified to a reasonable extent; …
  • FAR 14.303 Modification or withdrawal of bids.
    (a) Bids may be modified or withdrawn by any method authorized by the solicitation, if notice is received in the office designated in the solicitation not later than the exact time set for opening of bids. If the solicitation authorizes fac…
  • FAR 15.609 Limited use of data.
    …proposal is received with the restrictive legend (see paragraph (a) of this section), the modified cover sheet shall also be used and permission shall be obtained from the offeror before release of the proposal for evaluation by non-Governm…
  • FAR 16.505 Ordering.
    …' similar products, or products lacking the particular feature, do not meet, or cannot be modified to meet, the agency's needs. (ii) Requirements for use of items peculiar to one manufacturer shall be justified and approved using the forma…
  • FAR 27.302 Policy.
    …application for an exclusive license, the contractor's domestic license may be revoked or modified to the extent necessary to achieve expeditious practical application of the subject invention. The application shall be submitted in accordan…
  • FAR 27.304-1 General.
    …clause at 52.227-13, Patent Rights—Ownership by the Government, or a patent rights clause modified pursuant to 27.303(e)(2), the contractor (or an employee-inventor of the contractor after consultation with the contractor) may request great…
  • FAR 28.106-5 Consent of surety.
    (a) When any contract is modified, the contracting officer shall obtain the consent of surety if— (1) An additional bond is obtained from other than the original surety; (2) No additional bond is required and— (i) The modification is for…
  • FAR 30.201 Contract requirements.
    …201-1(b) shall be subject to CAS. A CAS-covered contract may be subject to either full or modified coverage. The rules for determining whether full or modified coverage applies are in 48 CFR 9903.201-2.
  • FAR 30.201-4 Contract clauses.
    …acts, unless the contract is exempted (see 48 CFR 9903.201-1), the contract is subject to modified coverage (see 48 CFR 9903.201-2), or the clause prescribed in paragraph (c) of this subsection is used. (2) The clause at FAR 52.230-2 requi…
  • FAR 32.504 Subcontracts under prime contracts providing progress payments.
    … subcontract include the substance of the Progress Payments clause in the prime contract, modified to indicate that the contractor, not the Government, awards the subcontract and administers the progress payments. The following exceptions a…
  • FAR 42.1204 Applicability of novation agreements.
    …ssumes under this Agreement or (ii) may undertake in the future should these contracts be modified under their terms and conditions. The Transferor waives notice of, and consents to, any such future modifications. (9) The contracts shall r…
  • FAR 42.1305 Contract clauses.
    …ntracts when a fixed-price contract is contemplated for supplies other than commercial or modified-commercial products. The clause use is optional when a fixed-price contract is contemplated for services, or for supplies that are commercial…
  • FAR 49.601-1 Electronic notice.
    …use if a supply contract is being completely terminated for convenience. If appropriately modified, the notice may be used for other than supply contracts. DATE____________________ XYZ Corporation New York, NY 12345 Contract No. _______…
  • FAR 52.210-1 Market Research.
    …velopmental items are available that— (i) Meet the agency's requirements; (ii) Could be modified to meet the agency's requirements; or (iii) Could meet the agency's requirements if those requirements were modified to a reasonable extent;…
  • FAR 52.214-27 Price Reduction for Defective Certified Cost or Pricing Data—Modifications—Sealed Bidding.
    … that were not accurate, the price shall be reduced accordingly and the contract shall be modified to reflect the reduction. This right to a price reduction is limited to that resulting from defects in data relating to modifications for whi…
  • FAR 52.215-10 Price Reduction for Defective Certified Cost or Pricing Data.
    …re not accurate, the price or cost shall be reduced accordingly and the contract shall be modified to reflect the reduction. (b) Any reduction in the contract price under paragraph (a) of this clause due to defective data from a prospectiv…
  • FAR 52.215-11 Price Reduction for Defective Certified Cost or Pricing Data—Modifications.
    …re not accurate, the price or cost shall be reduced accordingly and the contract shall be modified to reflect the reduction. This right to a price reduction is limited to that resulting from defects in data relating to modifications for whi…
  • FAR 52.216-2 Economic Price Adjustment—Standard Supplies.
    …ve date of the decrease in the Contractor's established price, and this contract shall be modified accordingly. (c) If the Contractor's applicable established price is increased after the contract date, the corresponding contract unit pric…
  • FAR 52.216-3 Economic Price Adjustment—Semistandard Supplies.
    …ve date of the decrease in the Contractor's established price, and this contract shall be modified accordingly. (c) If the Contractor's applicable established price is increased after the contract date, the corresponding contract unit pric…
  • FAR 52.227-11 Patent Rights—Ownership by the Contractor.
    …usiness to which the invention pertains. (ii) The Contractor's license may be revoked or modified by the agency to the extent necessary to achieve expeditious practical application of the subject invention in a particular country in accord…
  • FAR 52.227-13 Patent Rights—Ownership by the Government.
    … to which the subject invention pertains. (2) The Contractor's license may be revoked or modified by the agency to the extent necessary to achieve expeditious practical application of the subject invention in a particular country in accord…

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.