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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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69 sections with “essential requirements”: the first 40

  • DFARS 252.237-7024 Notice of Continuation of Essential Contractor Services.
    As prescribed in 237.7603(b), use the following provision: Notice of Continuation of Essential Contractor Services (OCT 2010) (a) Definitions. Essential contractor service and mission-essential functions have the meanings given in the cla…
  • FAR 2.101 Definitions.
    …defined in OMB Circular No. A-109 or to provide direct support of a weapon system that is essential to research, development, production, operation or maintenance of the system. Affiliates means associated business concerns or individuals …
  • FAR 4.202 Agency distribution requirements.
    …t additional distribution requirements to the minimum necessary for proper performance of essential functions. When contracts are assigned for administration to a contract administration office located in an agency different from that of th…
  • FAR 6.302-1 Only one responsible source and no other supplies or services will satisfy agency requirements.
    …cate that the use of such descriptions in the acquisition or portion of an acquisition is essential to the Government's requirements, thereby precluding consideration of a product manufactured by another company; and (C) The justification …
  • FAR 8.1102 Presolicitation requirements.
    …ns and station wagons) larger than Type IA, IB, or II (small, subcompact, or compact) are essential to the agency's mission; (3) Internal approvals have been received; and (4) The General Services Administration has advised that it cannot…
  • FAR 42.1106 Reporting requirements.
    …ess reports (see 42.1107(a)). Reporting requirements shall be limited to that information essential to Government needs and shall take maximum advantage of data output generated by contractor management systems. (b) Contract administration…
  • DFARS 207.471 Funding requirements.
    …4, Chapter 6, section 060206. (c) Use procurement funds for capital leases, as these are essentially installment purchases of property.
  • FAR 1.102-2 Performance standards.
    …vide uniformity where it contributes to efficiency or where fairness or predictability is essential. The System should also, however, encourage innovation, and local adaptation where uniformity is not essential. (c) Conduct business with i…
  • FAR 6.302-3 Industrial mobilization; engineering, developmental, or research capability; or expert services.
    …tional emergency or to achieve industrial mobilization; (ii) To establish or maintain an essential engineering, research, or development capability to be provided by an educational or other nonprofit institution or a federally funded resea…
  • FAR 6.502 Duties and responsibilities.
    …ments that are not stated in terms of functions to be performed, performance required, or essential physical characteristics; (4) Challenging barriers to the acquisition of commercial products and commercial services; and (5) Challenging …
  • FAR 13.303-5 Purchases under BPAs.
    …; and (iii) It is otherwise practical to do so. (e) Limit documentation of purchases to essential information and forms as follows: (1) Purchases generally should be made electronically, or orally when it is not considered economical or …
  • FAR 14.404-2 Rejection of individual bids.
    (a) Any bid that fails to conform to the essential requirements of the invitation for bids shall be rejected. (b) Any bid that does not conform to the applicable specifications shall be rejected unless the invitation authorized the submiss…
  • FAR 14.406 Receipt of an unreadable electronic bid.
    …cility by electronic data interchange is unreadable to the degree that conformance to the essential requirements of the invitation for bids cannot be ascertained, the contracting officer immediately shall notify the bidder that the bid will…
  • FAR 14.407-4 Mistakes after award.
    …ation if correcting the mistake would be favorable to the Government without changing the essential requirements of the specifications. (b) In addition to the cases contemplated in paragraph (a) above or as otherwise authorized by law, age…
  • FAR 14.503-1 Step one.
    …ble; or (iii) Unacceptable. (2) Any proposal which modifies, or fails to conform to the essential requirements or specifications of, the request for technical proposals shall be considered nonresponsive and categorized as unacceptable. (…
  • FAR 52.215-5 Facsimile Proposals.
    …l received by the Contracting Officer is unreadable to the degree that conformance to the essential requirements of the solicitation cannot be ascertained from the document— (1) The Contracting Officer immediately shall notify the offeror …
  • FAR 52.222-26 Equal Opportunity.
    …decisions, statements and policies related to setting or altering employee compensation. Essential job functions means the fundamental job duties of the employment position an individual holds. A job function may be considered essential if…
  • DFARS 252.225-7040 Contractor Personnel Supporting U.S. Armed Forces Deployed Outside the United States.
    …rization. In some cases, Combatant Commander subordinate commanders may designate mission-essential host nation or local national contractor employees (e.g., interpreters) as CAAF. CAAF includes contractors previously identified as contract…
  • FAR 12.202 Market research and description of agency need.
    (a) Market research (see 10.001) is an essential element of building an effective strategy for the acquisition of commercial products and commercial services and establishes the foundation for the agency description of need (see part 11), t…
  • FAR 13.201 General.
    …or service that uses covered telecommunications equipment or services as a substantial or essential component of any system, or as critical technology as part of any system, unless an exception applies or a waiver is granted. (See subpart 4…
  • FAR 15.407-2 Make-or-buy programs.
    …ed or provided by the contractor and are available—quality, quantity, delivery, and other essential factors considered—from another firm at equal or lower prices, or when they are regularly manufactured or provided by the contractor, but ar…
  • FAR 39.101 Policy.
    …or service that uses covered telecommunications equipment or services as a substantial or essential component of any system, or as critical technology as part of any system on or after August 13, 2019, unless an exception applies or a waive…
  • FAR 52.248-1 Value Engineering.
    …cation of a VECP to contracts awarded by the same contracting office or its successor for essentially the same unit. Acquisition savings include— (1) Instant contract savings, which are the net cost reductions on this, the instant contract…
  • DFARS 223.7104 Exceptions.
    …The Secretary of Defense may grant an exception to the prohibition in 10 U.S.C. 2692 when essential to protect the health and safety of the public from imminent danger if the Secretary otherwise determines the exception is essential and if …
  • DFARS 235.015-70 Special use allowances for research facilities acquired by educational institutions.
    …lowances only when all of the following conditions are met— (1) The research facility is essential to the performance of DoD contracts; (2) Existing facilities, either Government or nongovernment, cannot meet program requirements practica…
  • DFARS 245.604-1 Sales procedures.
    …d sales may be made when— (A) The plant clearance officer determines that this method is essential to expeditious plant clearance; and (B) The Government's interests are adequately protected. (ii) Negotiated sales shall be at fair and re…
  • FAR 1.704 Content.
    …D&F is based. (d) Findings that detail the particular circumstances, facts, or reasoning essential to support the determination. Necessary supporting documentation shall be obtained from appropriate requirements and technical personnel. (…
  • FAR 6.202 Establishing or maintaining alternative sources.
    …bilization; (3) Be in the interest of national defense in establishing or maintaining an essential engineering, research, or development capability to be provided by an educational or other nonprofit institution or a federally funded resea…
  • FAR 7.105 Contents of written acquisition plans.
    …ponsibility, or adequacy of the contractor's accounting system), and associated reasoning essential to support the contract type selection. The contracting officer shall ensure that requirements and technical personnel provide the necessary…
  • FAR 8.405-6 Limiting sources.
    …specifications shall not be used unless the particular brand name, product, or feature is essential to the Government's requirements, and market research indicates other companies' similar products, or products lacking the particular featur…
  • FAR 9.305 Risk.
    …ntractor to acquire specific materials or components or commence production to the extent essential to meet the delivery schedule (see Alternate II of the clause at 52.209-3, First Article Approval—Contractor Testing, and Alternate II of th…
  • FAR 11.002 Policy.
    … services in terms of— (A) Functions to be performed; (B) Performance required; or (C) Essential physical characteristics; (ii) Define requirements in terms that enable and encourage offerors to supply commercial products or commercial …
  • FAR 11.105 Items peculiar to one manufacturer.
    …red by another company, unless— (a)(1) The particular brand name, product, or feature is essential to the Government's requirements, and market research indicates other companies' similar products, or products lacking the particular featur…
  • FAR 11.401 General.
    (a) The time of delivery or performance is an essential contract element and shall be clearly stated in solicitations. Contracting officers shall ensure that delivery or performance schedules are realistic and meet the requirements of the a…
  • FAR 16.103 Negotiating contract type.
    …ponsibility, or adequacy of the contractor's accounting system), and associated reasoning essential to support the contract type selection; (C) An assessment regarding the adequacy of Government resources that are necessary to properly pla…
  • FAR 16.104 Factors in selecting contract types.
    …and the Government provide the bases for negotiating contract pricing arrangements. It is essential that the uncertainties involved in performance and their possible impact upon costs be identified and evaluated, so that a contract type tha…
  • FAR 16.505 Ordering.
    …specifications shall not be used unless the particular brand-name, product, or feature is essential to the Government's requirements and market research indicates other companies' similar products, or products lacking the particular feature…
  • FAR 17.402 Limitations.
    …r company; (3) The assistance required of the leader company is limited to that which is essential to enable the follower(s) to produce the items; and (4) Its use is authorized in accordance with agency procedures. (b) When leader compan…
  • FAR 19.809-2 Limitations on subcontracting and nonmanufacturer rule.
    …District Director makes a written determination that larger amounts of subcontracting are essential during certain stages of performance. (1) The 8(a) participant is required to provide the SBA District Director written assurance that the …
  • FAR 22.201 General.
    … states: “The development of the occupational and educational skills of prison inmates is essential to their rehabilitation and to their ability to make an effective return to free society. Meaningful employment serves to develop those skil…

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.