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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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84 sections with “amendment”: the first 40

  • FAR 14.208 Amendment of invitation for bids.
    … or to correct a defective or ambiguous invitation, such changes shall be accomplished by amendment of the invitation for bids using Standard Form 30, Amendment of Solicitation/Modification of Contract. The fact that a change was mentioned …
  • FAR 52.214-3 Amendments to Invitations for Bids.
    As prescribed in 14.201-6(b)(1), insert the following provision: Amendments to Invitations for Bids (DEC 2016) (a) If this solicitation is amended, then all terms and conditions which are not modified remain unchanged. (b)(1) Bidders sha…
  • FAR 30.202-3 Amendments and revisions.
    See 48 CFR 9903.202-3.
  • FAR 15.206 Amending the solicitation.
    …ments or terms and conditions, the contracting officer shall amend the solicitation. (b) Amendments issued before the established time and date for receipt of proposals shall be issued to all parties receiving the solicitation. (c) Amendm…
  • FAR 50.103-4 Facts and evidence.
    …formation: (1) A brief description of the contracts involved, the dates of execution and amendments, the items being acquired, the price or prices, the delivery schedules, and any special contract provisions relevant to the request. (2) A…
  • FAR 52.215-1 Instructions to Offerors—Competitive Acquisition.
    … to a proposal before the solicitation's closing date and time, or made in response to an amendment, or made to correct a mistake at any time before award. Proposal revision is a change to a proposal made after the solicitation closing dat…
  • FAR 14.405 Minor informalities or irregularities in bids.
    …f such authorization and the bid carries such a signature; (d) Acknowledge receipt of an amendment to an invitation for bids, but only if— (1) The bid received clearly indicates that the bidder received the amendment, such as where the am…
  • FAR 19.103 Appealing the contracting officer's North American Industry Classification System code and size standard determination.
    …d and filed within 10 calendar days after the issuance of the initial solicitation or any amendment affecting the NAICS code or size standard. However, SBA may file a NAICS code appeal at any time before offers are due. (2) Appeals of a co…
  • FAR 52.203-12 Limitation on Payments to Influence Certain Federal Transactions.
    …ess in connection with the award of this contractor the extension, continuation, renewal, amendment, or modification of this contract. (1) The term appropriated funds does not include profit or fee from a covered Federal action. (2) To th…
  • DFARS 252.246-7001 Warranty of data.
    …ibration procedures under MIL-T-31000, General Specification for Technical Data Packages, Amendment 1, or MIL-T-47500, General Specification for Technical Data Packages, Supp 1, or drawings and associated lists under level 2 or level 3 of M…
  • FAR 4.1603 Procedures.
    … positions: (b) Elements of a supplementary PIID. Use the supplementary PIID to identify amendments to solicitations and modifications to contracts, orders, and agreements. The supplementary PIID is reported as a separate data element used…
  • FAR 52.228-14 Irrevocable Letter of Credit.
    …days in advance of the current expiration date, the ILC is automatically extended without amendment for one year from the expiration date, or any future expiration date, until the period of required coverage is completed and the Contracting…
  • FAR 4.001 Definitions.
    …entifier for a solicitation number (e.g., N0002309R0009) in conjunction with a non-unique amendment number (e.g., 0001). The non-unique amendment number represents the supplementary PIID.
  • FAR 14.402-3 Postponement of openings.
    …t of the determination shall be publicly posted. If practical before issuance of a formal amendment of the invitation, the determination shall be otherwise communicated to prospective bidders who are likely to attend the scheduled bid openi…
  • FAR 15.210 Forms.
    … Offer—Negotiated Acquisition, may be used to issue RFPs and RFIs. (b) Standard Form 30, Amendment of Solicitation/Modification of Contract, and Optional Form 309, Amendment of Solicitation, may be used to amend solicitations of negotiated…
  • FAR 32.908 Contract clauses.
    …vices performed. (2) As provided in 32.903, agency policies and procedures may authorize amendment of paragraphs (a)(1)(i) and (ii) of the clause to insert a period shorter than 30 days (but not less than 7 days) for making contract invoic…
  • FAR 42.1205 Agreement to recognize contractor's change of name.
    …r obligations under these contracts and purchase orders). (2) The XYZ CORPORATION, by an amendment to its certificate of incorporation, dated ________, 20__, has changed its corporate name to ABC CORPORATION. (3) This amendment accomplish…
  • FAR 43.101 Definitions.
    … paying office or the appropriation data). Effective date means— (1) For a solicitation amendment, change order, or administrative change, the effective date shall be the issue date of the amendment, change order, or administrative change…
  • FAR 43.301 Use of forms.
    (a)(1) The Standard Form 30 (SF 30), Amendment of Solicitation/Modification of Contract, exclusive of actions processed under part 15, shall (except for the options stated in 43.301(a)(2) or actions processed under part 15) be used for— (i…
  • FAR 50.102-3 Limitations on exercise of authority.
    …id bond, payment bond, performance bond, or other bond required by law. (b) No contract, amendment, or modification shall be made under Pub. L. 85-804's authority— (1) Unless the approving authority finds that the action will facilitate t…
  • FAR 50.103-5 Processing cases.
    …y to the national defense is an issue (50.103-2(a)(1)), agencies considering requests for amendment without consideration involving another agency shall obtain advice on the issue from the other agency before making the final decision. When…
  • FAR 52.204-30 Federal Acquisition Supply Chain Security Act Orders—Prohibition.
    … order issued after the date of solicitation applies to this contract only if added by an amendment to the solicitation or modification to the contract (see FAR 4.2304(c)). However, see paragraph (c) of this clause. (5)(i) If the contracto…
  • FAR 52.212-1 Instructions to Offerors—Commercial Products and Commercial Services.
    …ions that the offeror shall complete electronically); (9) Acknowledgment of Solicitation Amendments; (10) Past performance information, when included as an evaluation factor, to include recent and relevant contracts for the same or simila…
  • FAR 52.222-41 Service Contract Labor Standards.
    …ng agreements effective at such time, and in the case of such agreements or provisions or amendments thereof effective at a later time during the period of contract performance such agreements shall be reported promptly after negotiation th…
  • FAR 53.215-1 Solicitation and receipt of proposals.
    …d in 15.509. Block 18 may not be used for negotiated procurements.. (b) SF 30 (11/2016), Amendment of Solicitation/Modification of Contract. SF 30, prescribed in 53.243, may be used for amending requests for proposals and for amending requ…
  • FAR 1.108 FAR conventions.
    …relevant portion of the Code of Federal Regulations, the citation includes all applicable amendments, unless otherwise stated. (f) Imperative sentences. When an imperative sentence directs action, the contracting officer is responsible for…
  • FAR 3.803 Exceptions.
    …to the provisions of the Small Business Act, as amended by Pub. L. 95-507, and subsequent amendments. (2) Professional and technical services. (i) Payment of reasonable compensation made to an officer or employee of a person requesting or …
  • FAR 4.803 Contents of contract files.
    …cted. (7) Government estimate of contract price. (8) A copy of the solicitation and all amendments thereto. (9) Security requirements and evidence of required clearances. (10) A copy of each offer or quotation, the related abstract, and…
  • FAR 4.1002 Applicability.
    …policies of this subpart shall apply to the following procurement instruments, to include amendments, modifications, and change orders thereto: (a) Solicitations. (b) Contracts, including, but not limited to, Governmentwide acquisition co…
  • FAR 4.1602 Identifying the PIID and supplementary PIID.
    …ough (5) of this section. (1) Solicitation. Identify the PIID for all solicitations. For amendments to solicitations, identify a supplementary PIID, in conjunction with the PIID for the solicitation. (2) Contracts and purchase orders. Ide…
  • FAR 8.406-4 Termination for cause.
    …rocedures, shall ensure that information related to termination for cause notices and any amendments are reported. In the event the termination for cause is subsequently converted to a termination for convenience, or is otherwise withdrawn,…
  • FAR 8.716 Change-of-name and successor in interest procedures.
    …t from the Committee, the contracting officer must— (1) Prepare a Standard Form (SF) 30, Amendment of Solicitation/Modification of Contract, incorporating a summary of the notice and attaching a list of contracts affected; and (2) Distrib…
  • FAR 11.201 Identification and availability of specifications.
    …agency index shall identify each document's approval date and the dates of any applicable amendments and revisions. Do not use general identification references, such as “the issue in effect on the date of the solicitation.” Contracting off…
  • FAR 12.403 Termination.
    …rocedures, shall ensure that information related to termination for cause notices and any amendments are reported. In the event the termination for cause is subsequently converted to a termination for convenience, or is otherwise withdrawn,…
  • FAR 12.603 Streamlined solicitation for commercial products or commercial services.
    … establish a response time in accordance with 5.203(b) (but see 5.203(h)). (4) Publicize amendments to solicitations in the same manner as the initial synopsis and solicitation.
  • FAR 13.307 Forms.
    …on these forms the clauses considered to be generally suitable for purchases. (3) SF 30, Amendment of Solicitation/Modification of Contract, or a purchase order form may be used to modify a purchase order, unless an agency form/automated f…
  • FAR 14.201-6 Solicitation provisions.
    …n requirements. (b) Insert in all invitations for bids the provisions at— (1) 52.214-3, Amendments to Invitations for Bids; and (2) 52.214-4, False Statements in Bids. (c) Insert the following provisions in invitations for bids: (1) 52…
  • FAR 14.209 Cancellation of invitations before opening.
    ….g., (1) where there is no longer a requirement for the supplies or services or (2) where amendments to the invitation would be of such magnitude that a new invitation is desirable. (b) When an invitation issued other than electronically i…
  • FAR 14.304 Submission, modification, and withdrawal of bids.
    … bids by the exact time specified in the IFB, and urgent Government requirements preclude amendment of the bid opening date, the time specified for receipt of bids will be deemed to be extended to the same time of day specified in the IFB o…
  • FAR 15.001 Definitions.
    …de to a proposal before the solicitation closing date and time, or made in response to an amendment, or made to correct a mistake at any time before award. Proposal revision is a change to a proposal made after the solicitation closing dat…

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.