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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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127 sections with “after acceptance”: the first 40

  • FAR 14.404-1 Cancellation of invitations after opening.
    (a)(1) Preservation of the integrity of the competitive bid system dictates that, after bids have been opened, award must be made to that responsible bidder who submitted the lowest responsive bid, unless there is a compelling reason to rej…
  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    …ices. The Government must exercise its postacceptance rights (1) within a reasonable time after the defect was discovered or should have been discovered; and (2) before any substantial change occurs in the condition of the item, unless the …
  • FAR 52.246-3 Inspection of Supplies—Cost-Reimbursement.
    …intained and made available to the Government during contract performance and for as long afterwards as the contract requires. (c) The Government has the right to inspect and test the contract supplies, to the extent practicable at all pla…
  • FAR 52.246-6 Inspection—Time-and-Material and Labor-Hour.
    …intained and made available to the Government during contract performance and for as long afterwards as the contract requires. (c) The Government has the right to inspect and test all materials furnished and services performed under this c…
  • FAR 52.246-8 Inspection of Research and Development—Cost-Reimbursement.
    …intained and made available to the Government during contract performance and for as long afterwards as the contract requires. (c) The Government has the right to inspect and test all work called for by the contract, to the extent practica…
  • FAR 52.248-1 Value Engineering.
    …n an instant contract, future contract savings include savings on increases in quantities after VECP acceptance that are due to contract modifications, exercise of options, additional orders, and funding of subsequent year requirements on a…
  • FAR 52.227-14 Rights in Data—General.
    … shown), the Government shall have the right to cancel or ignore the markings at any time after said period and the data will no longer be made subject to any disclosure prohibitions. (iii) If the Contractor provides written justification …
  • DFARS 227.7103-8 Deferred delivery and deferred ordering of technical data.
    …very of technical data identified as “deferred delivery” data at any time until two years after acceptance by the Government of all items (other than technical data or computer software) under the contract or contract termination, whichever…
  • DFARS 227.7203-8 Deferred delivery and deferred ordering of computer software and computer software documentation.
    …a identified as “deferred delivery” data or computer software at any time until two years after acceptance by the Government of all items (other than technical data or computer software) under the contract or contract termination, whichever…
  • FAR 2.101 Definitions.
    … term or condition used in contracts or in both solicitations and contracts, and applying after contract award or both before and after award. Contract modification means any written change in the terms of a contract (see 43.103). Contrac…
  • FAR 3.104-6 Ethics advisory opinions regarding prohibitions on a former official's acceptance of compensation from a contractor.
    … contractor from whom the individual proposes to accept compensation. (c) Within 30 days after receipt of a request containing complete information, or as soon thereafter as practicable, the agency ethics official should issue an opinion o…
  • FAR 32.904 Determining payment due dates.
    …oice payment is as follows: (1) The later of the following two events: (i) The 30th day after the designated billing office receives a proper invoice from the contractor (except as provided in paragraph (b)(3) of this section). (ii) The …
  • FAR 33.104 Protests to GAO.
    … of such a designation, to the contracting officer, so it is received no later than 1 day after the protest is filed with the GAO. The GAO may dismiss the protest if the protester fails to furnish a complete copy of the protest within 1 day…
  • FAR 48.001 Definitions.
    …n an instant contract, future contract savings include savings on increases in quantities after VECP acceptance that are due to contract modifications, exercise of options, additional orders, and funding of subsequent year requirements on a…
  • FAR 52.215-1 Instructions to Offerors—Competitive Acquisition.
    …21) (a) Definitions. As used in this provision— Discussions are negotiations that occur after establishment of the competitive range that may, at the Contracting Officer's discretion, result in the offeror being allowed to revise its prop…
  • FAR 52.227-11 Patent Rights—Ownership by the Contractor.
    …all disclose in writing each subject invention to the Contracting Officer within 2 months after the inventor discloses it in writing to Contractor personnel responsible for patent matters. The disclosure shall identify the inventor(s) and t…
  • FAR 52.227-13 Patent Rights—Ownership by the Government.
    …s clause. (2) Greater rights determinations. (i) The Contractor, or an employee-inventor after consultation with the Contractor, may request greater rights than the nonexclusive license provided in paragraph (d) of this clause. The request…
  • FAR 52.227-20 Rights in Data—SBIR Program.
    … appropriate). For a period of 4 years, unless extended in accordance with FAR 27.409(h), after acceptance of all items to be delivered under this contract, the Government will use these data for Government purposes only, and they shall not…
  • FAR 52.232-5 Payments Under Fixed-Price Construction Contracts.
    …performance. (Name) (Title) (Date) (d) Refund of unearned amounts. If the Contractor, after making a certified request for progress payments, discovers that a portion or all of such request constitutes a payment for performance by the C…
  • FAR 52.232-12 Advance Payments.
    …uptcy. (2) If any of the events described in subparagraph (1) above continue for 30 days after the written notice to the Contractor, the Government may take any of the following additional actions: (i) Withdraw by checks payable to the Tr…
  • FAR 52.232-25 Prompt payment.
    …the designated payment office is the later of the following two events: (A) The 30th day after the designated billing office receives a proper invoice from the Contractor (except as provided in paragraph (a)(1)(ii) of this clause). (B) Th…
  • FAR 52.232-26 Prompt Payment for Fixed-Price Architect-Engineer Contracts.
    …ces completed by the Contractor, the later of the following two events: (A) The 30th day after the designated billing office receives a proper invoice from the Contractor (except as provided in paragraph (a)(1)(iii) of this clause). (B) T…
  • FAR 52.232-27 Prompt Payment for Construction Contracts.
    …reaching milestones in any project. (A) The due date for making such payments is 14 days after the designated billing office receives a proper payment request. If the designated billing office fails to annotate the payment request with the…
  • FAR 52.245-1 Government Property.
    …s of Government property includes, but is not limited to— (1) Items that cannot be found after a reasonable search; (2) Theft; (3) Damage resulting in unexpected harm to property requiring repair to restore the item to usable condition; …
  • FAR 52.246-2 Inspection of Supplies—Fixed-Price.
    …complete and made available to the Government during contract performance and for as long afterwards as the contract requires. The Government may perform reviews and evaluations as reasonably necessary to ascertain compliance with this para…
  • FAR 52.246-17 Warranty of Supplies of a Noncomplex Nature.
    …ontractor warrants that for ____ [Contracting Officer shall state specific period of time after delivery, or the specified event whose occurrence will terminate the warranty period; e.g., the number of miles or hours of use, or combinations…
  • FAR 52.246-18 Warranty of Supplies of a Complex Nature.
    …ctor warrants that for ____ [Contracting Officer shall state the specific warranty period after delivery, or the specified event whose occurrence will terminate the warranty period; e.g., the number of miles or hours of use, or combinations…
  • FAR 52.246-19 Warranty of Systems and Equipment under Performance Specifications or Design Criteria.
    …ng Officer shall state the warranty period; e.g., at the time of delivery; within 45 days after delivery, or the specified event whose occurrence will terminate the warranty period; e.g., the number of miles or hours of use, or combination …
  • DFARS 227.7103-13 Government right to review, verify, challenge, and validate asserted restrictions.
    …cal data deliverable under the contract. Assertions must be challenged within three years after final payment under the contract or three years after delivery of the data, whichever is later. However, restrictive markings may be challenged …
  • 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.
    … the contract under which the SBIR/STTR data are developed or generated and ends 20 years after that date unless, after the award, the agency and the Contractor negotiate for some other protection period for the SBIR/STTR data developed or …
  • DFARS 252.227-7037 Validation of Asserted Restrictions on Technical Data.
    …equired or such longer period as may be mutually agreed. (2) If the Contracting Officer, after reviewing the written data furnished pursuant to paragraph (d)(1) of this clause, or any other available information pertaining to the validity …
  • DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).
    …ch other time as the funding agency may authorize for good cause shown by the Contractor) after the notice to show cause why the license should not be revoked or modified. (iv) The Contractor has the right to appeal, in accordance with 37 …
  • DFARS 252.246-7001 Warranty of data.
    …all other requirements of this contract. The warranty period shall extend for three years after completion of the delivery of the line item of data (as identified in DD Form 1423, Contract Data Requirements List) of which the data forms a p…
  • FAR 33.103 Protests to the agency.
    …r 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 is earlier. The agency, for good cause shown, or where it determines that a p…
  • FAR 46.706 Warranty terms and conditions.
    …ime period or duration of the warranty must be clearly specified and shall be established after consideration of such factors as (i) the estimated useful life of the item, (ii) the nature of the item including storage or shelf-life, and (ii…
  • FAR 46.803 Policy.
    …subpart, of liability for loss of or damage to property of the Government that (1) occurs after acceptance of supplies delivered or services performed under a contract and (2) results from defects or deficiencies in the supplies or services…
  • FAR 52.211-8 Time of Delivery.
    …ivery date in the delivery schedule above will be extended by the number of calendar days after the above date that the contract is in fact awarded. Attention is directed to the Contract Award provision of the solicitation that provides tha…
  • FAR 52.211-9 Desired and Required Time of Delivery.
    …ivery date in the delivery schedule above will be extended by the number of calendar days after the above date that the contract is in fact awarded. Attention is directed to the Contract Award provision of the solicitation that provides tha…
  • FAR 52.226-7 Drug-Free Workplace.
    …fferor/contractor. (b) The Contractor, if other than an individual, shall—within 30 days after award (unless a longer period is agreed to in writing for contracts of 30 days or more performance duration); or as soon as possible for contrac…
  • FAR 52.232-16 Progress Payments.
    …d quarterly or more frequently; and (ii) The contribution does not remain unpaid 30 days after the end of the applicable quarter or shorter payment period (any contribution remaining unpaid shall be excluded from the Contractor's total cos…

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.