SpendQueryBeta

48 CFR · Federal Acquisition Regulation and Defense supplement

FAR and DFARS navigator

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.

Ask the FAR

Try: · · ·

Clear

29 sections with “Proposal revision”

  • FAR 15.307 Proposal revisions.
    (a) If an offerors proposal is eliminated or otherwise removed from the competitive range, no further revisions to that offeror's proposal shall be accepted or considered. (b) The contracting officer may request or allow proposal revisions…
  • FAR 15.208 Submission, modification, revision, and withdrawal of proposals.
    (a) Offerors are responsible for submitting proposals, and any revisions, and modifications, so as to reach the Government office designated in the solicitation by the time specified in the solicitation. Offerors may use any transmission me…
  • FAR 52.214-23 Late submissions, modifications, revisions, and withdrawals of technical proposals under two-step sealed bidding.
    …wing provision: Late Submissions, Modifications, Revisions, and Withdrawals of Technical Proposals Under Two-Step Sealed Bidding (NOV 1999) (a) Bidders are responsible for submitting technical proposals, and any modifications or revisions…
  • FAR 15.306 Exchanges with offerors after receipt of proposals.
    …nducting discussions, offerors may be given the opportunity to clarify certain aspects of proposals (e.g., the relevance of an offeror's past performance information and adverse past performance information to which the offeror has not prev…
  • FAR 15.203 Requests for proposals.
    (a) Requests for proposals (RFPs) are used in negotiated acquisitions to communicate Government requirements to prospective contractors and to solicit proposals. RFPs for competitive acquisitions shall, at a minimum, describe the— (1) Gove…
  • FAR 52.215-5 Facsimile Proposals.
    As prescribed in 15.209(e), insert the following provision: Facsimile Proposals (OCT 1997) (a) Definition. Facsimile proposal, as used in this provision, means a proposal, revision or modification of a proposal, or withdrawal of a proposa…
  • FAR 15.001 Definitions.
    As used in this part— Deficiency is a material failure of a proposal to meet a Government requirement or a combination of significant weaknesses in a proposal that increases the risk of unsuccessful contract performance to an unacceptable …
  • FAR 15.503 Notifications to unsuccessful offerors.
    …itive range. The contracting officer shall notify offerors promptly in writing when their proposals are excluded from the competitive range or otherwise eliminated from the competition. The notice shall state the basis for the determination…
  • FAR 52.215-1 Instructions to Offerors—Competitive Acquisition.
    …t the Contracting Officer's discretion, result in the offeror being allowed to revise its proposal. In writing, writing, or written means any worded or numbered expression that can be read, reproduced, and later communicated, and includes …
  • FAR 14.201-6 Solicitation provisions.
    …on at 52.214-23, Late Submissions, Modifications, Revisions, and Withdrawals of Technical Proposals under Two-Step Sealed Bidding, in solicitations for technical proposals in step one of two-step sealed bidding. (s) Insert the provision at…
  • FAR 14.503-1 Step one.
    (a) Requests for technical proposals shall be synopsized in accordance with Part 5. The request must include, as a minimum, the following: (1) A description of the supplies or services required. (2) A statement of intent to use the two st…
  • FAR 15.408 Solicitation provisions and contract clauses.
    …Table 15-2 of this section; (2) Use the provision with its Alternate II if copies of the proposal are to be sent to the ACO and contract auditor; (3) Use the provision with its Alternate III if submission via electronic media is required;…
  • FAR 27.409 Solicitation provisions and contract clauses
    …g officer desires to acquire unlimited rights in technical data contained in a successful proposal upon which a contract award is based, insert the clause at 52.227-23, Rights to Proposal Data (Technical). Rights to technical data in a prop…
  • FAR 36.606 Negotiations.
    …4-4(c)(4)(i) on fee limitation). (b) The contracting officer should ordinarily request a proposal from the firm, ensuring that the solicitation does not inadvertently preclude the firm from proposing the use of modern design methods. (c) …
  • FAR 52.230-6 Administration of Cost Accounting Standards.
    …, submit on or before a date specified by the CFAO— (1) A general dollar magnitude (GDM) proposal in accordance with paragraph (d) or (g) of this clause. The Contractor may submit a detailed cost-impact (DCI) proposal in lieu of the reques…
  • FAR 52.242-3 Penalties for Unallowable Costs.
    …7, use the following clause: Penalties for Unallowable Costs (DEC 2022) (a) Definition. Proposal, as used in this clause, means either— (1) A final indirect cost rate proposal submitted by the Contractor after the expiration of its fisca…
  • FAR 52.248-1 Value Engineering.
    …al. The Contractor is encouraged to develop, prepare, and submit value engineering change proposals (VECP's) voluntarily. The Contractor shall share in any net acquisition savings realized from accepted VECP's, in accordance with the incent…
  • FAR 15.206 Amending the solicitation.
    (a) When, either before or after receipt of proposals, the Government changes its requirements or terms and conditions, the contracting officer shall amend the solicitation. (b) Amendments issued before the established time and date for re…
  • FAR 52.248-3 Value Engineering—Construction.
    …al. The Contractor is encouraged to develop, prepare, and submit value engineering change proposals (VECP's) voluntarily. The Contractor shall share in any instant contract savings realized from accepted VECP's, in accordance with paragraph…
  • FAR 22.1003-4 Administrative limitations, variations, tolerances, and exemptions.
    …tracting officer shall identify the deficiency to the offeror before receipt of the final proposal revisions. Unless the offeror provides a revised offer acknowledging applicability of the Service Contract Labor Standards statute or demonst…
  • FAR 25.1002 Use of foreign currency.
    …rd is based on initial offers; otherwise (ii) On the date specified for receipt of final proposal revisions. (c) If a contract is priced in foreign currency, the agency must ensure that adequate funds are available to cover currency fluct…
  • FAR 52.215-9 Changes or Additions to Make-or-Buy Program.
    …items designated in the contract as subject to this paragraph, it shall— (1) Support its proposal with certified cost or pricing data in accordance with FAR 15.408, Table 15-2 when required by FAR 15.403, and data other than certified cost…
  • FAR 52.225-17 Evaluation of Foreign Currency Offers.
    … if award is based on initial offers; otherwise (2) On the date specified for receipt of proposal revisions. (End of provision)
  • FAR 7.103 Agency-head responsibilities.
    …olicitation for advisory and assistance services involving the analysis and evaluation of proposals submitted in response to a solicitation, that a sufficient number of covered personnel with the training and capability to perform an evalua…
  • FAR 49.115 Settlement of terminated incentive contracts.
    …nment, including any for which the contractor may request reimbursement in the settlement proposal. The TCO shall reimburse the contractor at target price for completed articles included in the settlement proposal for which a final price ha…
  • FAR 52.212-1 Instructions to Offerors—Commercial Products and Commercial Services.
    …rior to the time set for receipt of offers; or (C) If this solicitation is a request for proposals, it was the only proposal received. (ii) However, a late modification of an otherwise successful offer, that makes its terms more favorable…
  • FAR 1.501-2 Opportunity for public comments.
    …ext of the revision or, if it is impracticable to publish the full text, a summary of the proposal; (2) The address and telephone number of the individual from whom copies of the revision, in full text, can be requested and to whom comment…
  • FAR 4.804-5 Procedures for closing out contract files.
    …3) Final royalty report is cleared; (4) There is no outstanding value engineering change proposal; (5) Plant clearance report is received; (6) Property clearance is received; (7) All interim or disallowed costs are settled; (8) Price r…
  • FAR 52.246-19 Warranty of Systems and Equipment under Performance Specifications or Design Criteria.
    …to correct or only to partially correct, the Contractor shall submit a technical and cost proposal within ____ [Contracting Officer shall insert period of time] to amend the contract to permit acceptance of the affected supplies or services…

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.