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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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24 sections with “proposal acceptance period”

  • FAR 2.101 Definitions.
    … a general announcement of an agency's research interest including criteria for selecting proposals and soliciting the participation of all offerors capable of satisfying the Government's needs (see 6.102(d)(2)). Building or work means con…
  • FAR 5.202 Exceptions.
    … classified information, or that access to classified matter may be necessary to submit a proposal or perform the contract does not, in itself, justify use of this exception to synopsis; (2) The proposed contract action is made under the c…
  • 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 15.504 Award to successful offeror.
    … (a) If the award document includes information that is different than the latest signed proposal, as amended by the offeror's written correspondence, both the offeror and the contracting officer shall sign the contract award. (b) When an…
  • FAR 35.016 Broad agency announcement.
    …pecific system or hardware solution. The BAA technique shall only be used when meaningful proposals with varying technical/scientific approaches can be reasonably anticipated. (b) The BAA, together with any supporting documents, shall— (1…
  • FAR 42.302 Contract administration functions.
    …s. (3) Conduct post-award orientation conferences. (4) Review and evaluate contractors' proposals under subpart 15.4 and, when negotiation will be accomplished by the contracting officer, furnish comments and recommendations to that offic…
  • 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 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 22.404-5 Expiration of project wage determinations.
    …obtained and processed. (2) The contracting officer need not delay opening and reviewing proposals or discussing them with the offerors while a new determination for the primary site of the work is being obtained. The contracting officer s…
  • 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 3.104-3 Statutory and related prohibitions, restrictions, and requirements.
    … subsection must not, other than as provided by law, knowingly disclose contractor bid or proposal information or source selection information before the award of a Federal agency procurement contract to which the information relates. (See …
  • FAR 48.001 Definitions.
    …sition savings means savings resulting from the application of a value engineering change proposal (VECP) to contracts awarded by the same contracting office of its successor for essentially the same unit. Acquisition savings include— (1) …
  • FAR 52.227-11 Patent Rights—Ownership by the Contractor.
    …ject invention if the Contractor determines that the small business concern has a plan or proposal for marketing the invention which, if executed, is equally as likely to bring the invention to practical application as any plans or proposal…
  • FAR 11.403 Supplies or services.
    … mail or otherwise furnish to the contractor the contract, notice of award, acceptance of proposal, or other contract document not later than the date of the contract. (d) If the delivery schedule is based on the date the contractor receiv…
  • FAR 31.205-42 Termination costs.
    …equipment and starting load costs. (3) When initial costs are included in the settlement proposal as a direct charge, such costs shall not also be included in overhead. Initial costs attributable to only one contract shall not be allocated…
  • FAR 33.104 Protests to GAO.
    … protest, including reasonable attorney, consultant, and expert witness fees, and bid and proposal preparation costs. The agency shall use funds available for the procurement to pay the costs awarded. (2) The protester shall file its claim…
  • 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 52.243-1 Changes—Fixed-Price.
    …cer decides that the facts justify it, the Contracting Officer may receive and act upon a proposal submitted before final payment of the contract. (d) If the Contractor's proposal includes the cost of property made obsolete or excess by th…
  • FAR 5.205 Special situations.
    …rocurement matters such as business fairs, long-range procurement estimates, prebid or preproposal conferences, meetings, and the availability of draft solicitations or draft specifications for review. (d) Architect-engineering services. C…
  • FAR 7.105 Contents of written acquisition plans.
    …for using a reverse auction (when applicable),the timing for submission and evaluation of proposals, and the relationship of evaluation factors to the attainment of the acquisition objectives (see subpart 15.3). When an EVMS is required (se…
  • FAR 28.001 Definitions.
    … also power of attorney at 2.101). Bid means any response to a solicitation, including a proposal under a negotiated acquisition. See the definition of “offer” at 2.101. Bidder means any entity that is responding or has responded to a sol…
  • FAR 33.103 Protests to the agency.
    …es in a solicitation shall be filed before bid opening or the closing date for receipt of proposals. In all other cases, protests shall be filed no later than 10 days after the basis of protest is known or should have been known, whichever …
  • FAR 52.243-2 Changes—Cost-Reimbursement.
    …cer decides that the facts justify it, the Contracting Officer may receive and act upon a proposal submitted before final payment of the contract. (d) Failure to agree to any adjustment shall be a dispute under the Disputes clause. However…
  • 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.