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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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429 sections with “Proposal”: the first 40

  • FAR 3.104-4 Disclosure, protection, and marking of contractor bid or proposal information and source selection information.
    …provided for in this subsection, no person or other entity may disclose contractor bid or proposal information or source selection information to any person other than a person authorized, in accordance with applicable agency regulations or…
  • FAR 15.201 Exchanges with industry before receipt of proposals.
    … interested parties, from the earliest identification of a requirement through receipt of proposals, are encouraged. Any exchange of information must be consistent with procurement integrity requirements (see 3.104). Interested parties incl…
  • 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 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 15.305 Proposal evaluation.
    (a) Proposal evaluation is an assessment of the proposal and the offeror's ability to perform the prospective contract successfully. An agency shall evaluate competitive proposals and then assess their relative qualities solely on the facto…
  • 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 15.307 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 15.404-1 Proposal analysis techniques.
    (a) General. The objective of proposal analysis is to ensure that the final agreed-to price is fair and reasonable. (1) The contracting officer is responsible for evaluating the reasonableness of the offered prices. The analytical techniqu…
  • FAR 15.607 Criteria for acceptance and negotiation of an unsolicited proposal.
    (a) A favorable comprehensive evaluation of an unsolicited proposal does not, in itself, justify awarding a contract without providing for full and open competition. The agency point of contact shall return an unsolicited proposal to the of…
  • FAR 49.107 Audit of prime contract settlement proposals and subcontract settlements.
    (a) The TCO shall refer each prime contractor settlement proposal valued at or above the threshold for obtaining certified cost or pricing data set forth in FAR 15.403-4(a)(1) to the appropriate audit agency for review and recommendations. …
  • FAR 49.206-1 Submission of settlement proposals.
    … of the termination clause, the contractor should promptly submit to the TCO a settlement proposal for the amount claimed because of the termination. The final settlement proposal must be submitted within one year from the effective date of…
  • FAR 49.206-2 Bases for settlement proposals.
    (a) Inventory basis. (1) Use of the inventory basis for settlement proposals is preferred. Under this basis, the contractor may propose only costs allocable to the terminated portion of the contract, and the settlement proposal must itemize…
  • FAR 49.602-1 Termination settlement proposal forms.
    (a) Standard Form 1435, Settlement Proposal (Inventory Basis), shall be used to submit settlement proposals resulting from the termination of fixed-price contracts if the proposals are computed on an inventory basis (see 49.206-2(a)). (b) …
  • 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 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 52.236-28 Preparation of Proposals—Construction.
    As prescribed in 36.520, insert the following provision: Preparation of Proposals—Construction (OCT 1997) (a) Proposals must be (1) submitted on the forms furnished by the Government or on copies of those forms, and (2) manually signed. T…
  • DFARS 252.227-7016 Rights in Bid or Proposal Information.
    …-6(e)(1), 227.7104-4(b)(1), or 227.7203-6(b), use the following clause: Rights In Bid or Proposal Information (JAN 2025) (a) Definitions. (a) Definitions. As used in this clause— Computer software is defined in— (1) The 252.227-7014, R…
  • FAR 6.401 Sealed bidding and competitive proposals.
    Sealed bidding and competitive proposals, as described in parts 14 and 15, are both acceptable procedures for use under subparts 6.1, 6.2; and, when appropriate, under subpart 6.3. (a) Sealed bids. (See part 14 for procedures.) Contracting…
  • FAR 15.207 Handling proposals and information.
    (a) Upon receipt at the location specified in the solicitation, proposals and information received in response to a request for information (RFI) shall be marked with the date and time of receipt and shall be transmitted to the designated o…
  • FAR 15.605 Content of unsolicited proposals.
    Unsolicited proposals should contain the following information to permit consideration in an objective and timely manner: (a) Basic information including— (1) Offeror's name and address and type of organization; e.g., profit, nonprofit, e…
  • FAR 27.407 Rights to technical data in successful proposals.
    The clause at 52.227-23, Rights to Proposal Data (Technical), allows the Government to acquire unlimited rights to technical data in successful proposals. Pursuant to the clause, the prospective contractor is afforded the opportunity to spe…
  • FAR 31.205-18 Independent research and development and bid and proposal costs.
    … the term development, defined in this subsection. Basic research, (See 2.101). Bid and proposal (B&P) costs means the costs incurred in preparing, submitting, and supporting bids and proposals (whether or not solicited) on potential Gove…
  • FAR 52.204-22 Alternative Line Item Proposal.
    As prescribed in 4.1008, insert the following provision: Alternative Line Item Proposal (JAN 2017) (a) The Government recognizes that the line items established in this solicitation may not conform to the Offeror's practices. Failure to c…
  • FAR 15.404-2 Data to support proposal analysis.
    …rovide— (i) Technical, audit, and special reports associated with the cost elements of a proposal, including subcontracts; (ii) Information on related pricing practices and history; (iii) Information to help contracting officers determin…
  • FAR 49.304-2 Submission of settlement proposal (fee only).
    The contractor shall limit the settlement proposal to a proposed reduction in the amount of fee. The final settlement proposal shall be submitted to the TCO within one year from the effective date of termination, unless the period is extend…
  • FAR 49.605 Request to settle subcontractor settlement proposals.
    Contractors requesting authority to settle subcontractor settlement proposals shall furnish applicable information from the list below and any additional information required by the contracting officer: (a) Name of contractor and address o…
  • FAR 52.214-24 Multiple Technical Proposals.
    As prescribed in 14.201-6(s), insert the following provision: Multiple Technical Proposals (APR 1984) In the first step of this two-step acquisition, solicited sources are encouraged to submit multiple technical proposals presenting diffe…
  • FAR 52.230-7 Proposal Disclosure—Cost Accounting Practice Changes.
    As prescribed in 30.201-3(c), insert the following provision: Proposal Disclosure—Cost Accounting Practice Changes (APR 2005) The offeror shall check “yes” below if the contract award will result in a required or unilateral change in cost…
  • FAR 53.215-1 Solicitation and receipt of proposals.
    …ification of Contract. SF 30, prescribed in 53.243, may be used for amending requests for proposals and for amending requests for information, as specified in 15.210(b). (c) SF 33 (Rev. 9/97), Solicitation, Offer and Award. SF 33, prescrib…
  • DFARS 252.236-7000 Modification proposals—price breakdown.
    As prescribed in 236.570(a), use the following clause: Modification Proposals—Price Breakdown (DEC 1991) (a) The Contractor shall furnish a price breakdown, itemized as required and within the time specified by the Contracting Officer, wi…
  • FAR 49.108-6 Delay in settling subcontractor settlement proposals.
    …O may settle with the prime contractor. The TCO shall except the subcontractor settlement proposal from the settlement in whole or part and reserve the rights of the Government and the prime contractor with respect to the subcontractor prop…
  • FAR 49.303-1 Submission of settlement proposal.
    The contractor shall submit a final settlement proposal covering unvouchered costs and any proposed fee to the TCO within 1 year from the effective date of termination, unless the period is extended by the TCO. The contractor shall use the …
  • FAR 49.303-3 Audit of settlement proposal.
    The TCO shall submit the settlement proposal to the appropriate audit agency for review (see 49.107). However, if the settlement proposal is limited to an adjustment of fee, no referral to the audit agency is required.
  • FAR 52.227-23 Rights to Proposal Data (Technical).
    As prescribed in 27.409(l), insert the following clause: Rights to Proposal Data (Technical) (JUN 1987) Except for data contained on pages ___, it is agreed that as a condition of award of this contract, and notwithstanding the conditions…
  • DFARS 215.404-1 Proposal analysis techniques.
    (a) General. (i) Follow the procedures at PGI 215.404-1 for proposal analysis. (ii) For spare parts or support equipment, perform an analysis of— (A) Those line items where the proposed price exceeds by 25 percent or more the lowest price…
  • DFARS 252.215-7009 Proposal Adequacy Checklist.
    As prescribed in 215.408(4), use the following provision: Proposal Adequacy Checklist (MAR 2023) The offeror shall complete the following checklist, providing location of requested information, or an explanation of why the requested infor…
  • DFARS 252.215-7011 Requirements for Submission of Proposals to the Administrative Contracting Officer and Contract Auditor.
    …rescribed in 215.408(5)(ii), use the following provision: Requirements for Submission of Proposals to the Administrative Contracting Officer and Contract Auditor (JAN 2018) When the proposal is submitted, the Offeror shall also submit one…
  • DFARS 252.215-7012 Requirements for Submission of Proposals via Electronic Media.
    …escribed in 215.408(5)(iii), use the following provision: Requirements for Submission of Proposals Via Electronic Media (JAN 2018) The Offeror shall submit the cost portion of the proposal via the following electronic media: [Insert media…
  • FAR 18.111 Oral requests for proposals.
    Oral requests for proposals are authorized under certain conditions. (See 15.203(f).)
  • FAR 49.109-6 Joint settlement of two or more settlement proposals.
    …ctor, the TCO or TCO's concerned may negotiate jointly two or more termination settlement proposals of the same contractor under different contracts, even though the contracts are with different contracting offices or agencies. In such case…

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.