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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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102 sections with “substantial interest”: the first 40

  • FAR 52.222-41 Service Contract Labor Standards.
    …t succeeds a contract subject to the Service Contract Labor Standards statute under which substantially the same services were furnished in the same locality and service employees were paid wages and fringe benefits provided for in a collec…
  • FAR 2.101 Definitions.
    …ng agency determines the product was developed exclusively at private expense and sold in substantial quantities, on a competitive basis, to multiple State and local governments or to multiple foreign governments. Commercial service means—…
  • FAR 22.1003-4 Administrative limitations, variations, tolerances, and exemptions.
    …ns, airplanes, buses, and vessels over regularly established routes and accounts for an insubstantial portion of the revenue therefrom. (2) Any contract entered into by the U.S. Postal Service with an individual owner-operator for mail ser…
  • FAR 52.225-11 Buy American—Construction Materials Under Trade Agreements.
    …on material that consists in whole or in part of materials from another country, has been substantially transformed in a Caribbean Basin country into a new and different construction material distinct from the materials from which it was tr…
  • FAR 52.232-12 Advance Payments.
    …se of business. (iii) The appointment of a trustee, receiver, or liquidator for all or a substantial part of the Contractor's property, or the institution of proceedings by or against the Contractor for bankruptcy, reorganization, arrangem…
  • DFARS 252.225-7001 Buy American and Balance of Payments Program.
    …ial product” in section 2.101 of the Federal Acquisition Regulation (FAR)); (ii) Sold in substantial quantities in the commercial marketplace; and (iii) Offered to the Government, under a contract or subcontract at any tier, without modif…
  • DFARS 252.225-7021 Trade Agreements.
    … an article that consists in whole or in part of materials from another country, has been substantially transformed in a Caribbean Basin country into a new and different article of commerce with a name, character, or use distinct from that …
  • DFARS 252.225-7036 Buy American—Free Trade Agreements—Balance of Payments Program.
    … an article that consists in whole or in part of materials from another country, has been substantially transformed in Bahrain into a new and different article of commerce with a name, character, or use distinct from that of the article or …
  • FAR 9.407-3 Procedures.
    …'s office, State attorney general's office, or a State or local prosecutor's office, that substantial interests of the Government in pending or contemplated legal proceedings based on the same facts as the suspension would be prejudiced, ag…
  • FAR 28.203-3 Release of security interest.
    …y release a portion of the security interest on the individual surety's assets based upon substantial performance of the contractor's obligations under its performance bond. Release of the security interest in support of a payment bond must…
  • FAR 31.205-6 Compensation for personal services.
    …f their immediate families; and (B) Persons who are contractually committed to acquire a substantial financial interest in the contractor's enterprise. (ii) For these individuals, compensation must— (A) Be reasonable for the personal ser…
  • FAR 52.209-6 Protecting the Government's Interest When Subcontracting With Contractors Debarred, Suspended, Proposed for Debarment, or Voluntarily Excluded.
    …ion of “commercial product” in Federal Acquisition Regulation (FAR) 2.101); (ii) Sold in substantial quantities in the commercial marketplace; and (iii) Offered to the Government, under a contract or subcontract at any tier, without modif…
  • FAR 52.225-23 Required Use of American Iron, Steel, and Manufactured Goods—Buy American Statute—Construction Materials Under Trade Agreements.
    …on material that consists in whole or in part of materials from another country, has been substantially transformed in an FTA country into a new and different construction material distinct from the materials from which it was transformed. …
  • FAR 52.232-16 Progress Payments.
    …ncrease the rate of liquidation, or take a combination of these actions, after finding on substantial evidence any of the following conditions: (1) The Contractor failed to comply with any material requirement of this contract (which inclu…
  • DFARS 215.404-71-3 Contract type risk and working capital adjustment.
    …enerally regard the contract type risk to be in the low end of the designated range. If a substantial portion of the costs has been incurred prior to definitization, the contracting officer may assign a value as low as zero percent, regardl…
  • DFARS 252.209-7007 Prohibited Financial Interests for Lead System Integrators.
    …a major system, if the prime contractor is not expected at the time of award to perform a substantial portion of the work on the system and the major subsystems. (3) Lead system integrator without system responsibility means a prime contra…
  • FAR 3.104-2 General.
    …es) are prohibited by 18 U.S.C. 208 and 5 CFR part 2635 from participating personally and substantially in any particular matter that would affect the financial interests of any person with whom the employee is seeking employment. An employ…
  • FAR 22.1021 Requests for hearing.
    …e and Hour Division, U.S. Department of Labor, Washington, DC 20210. (b) A request for a substantial variance hearing shall include sufficient data to show that the rates at issue vary substantially from those prevailing for similar servic…
  • FAR 22.1025 Ineligibility of violators.
    …ute, or to any firm, corporation, partnership, or association in which the violator has a substantial interest, without the approval of the Secretary of Labor. This prohibition against award to an ineligible contractor applies to both prime…
  • FAR 32.304-7 Contract surety bonds and loan guarantees.
    …ns, unless the interests of the surety are subordinated to the guaranteed loan. (b) If a substantial share of the contractor's defense contracts are covered by surety bonds, or the amount of the bond is substantial in relation to the contr…
  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    …e 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 change is due to the defect in the item. (b) Assignment. The Contractor or its ass…
  • FAR 52.245-1 Government Property.
    …tendents, or equivalent representatives who have supervision or direction of— (1) All or substantially all of the Contractor's business; (2) All or substantially all of the Contractor's operation at any one plant or separate location; or …
  • DFARS 225.103 Exceptions.
    …stent with the public interest to apply the Buy American statute to end products that are substantially transformed in the United States. (ii)(A) Normally, use the evaluation procedures in subpart 225.5, but consider recommending a public …
  • FAR 5.205 Special situations.
    …tion 8(a) program. (g) Notifications to the public regarding consolidation, bundling, or substantial bundling. (1) For the requirement to publish a notification of consolidation or substantial bundling of contract requirements, see 7.107-5…
  • FAR 15.403-3 Requiring data other than certified cost or pricing data.
    …n Act (5 U.S.C. 552(b)). (3) For services that are not offered and sold competitively in substantial quantities in the commercial marketplace, but are of a type offered and sold competitively in substantial quantities in the commercial mar…
  • FAR 19.1505 Set-aside procedures.
    …e acquisition is assigned a NAICS code in which SBA has determined that WOSB concerns are substantially underrepresented in Federal procurement, as specified on SBA's website at http://www.sba.gov/WOSB. (b) For requirements in NAICS codes …
  • FAR 22.404-12 Labor standards for contracts containing construction requirements and option provisions that extend the term of the contract.
    … an option to extend the term of a contract for construction, or a contract that includes substantial and segregable construction work, the contracting officer must modify the contract to incorporate the most current wage determination. (b…
  • FAR 27.202-5 Solicitation provisions and contract clause.
    (a)(1) Insert a solicitation provision substantially the same as the provision at 52.227-6, Royalty Information, in— (i) Any solicitation that may result in a negotiated contract for which royalty information is desired and for which certi…
  • FAR 27.302 Policy.
    …bject invention or produced through the use of the subject invention will be manufactured substantially in the United States. However, in individual cases, the requirement for this agreement may be waived by the agency upon a showing by the…
  • FAR 52.212-3 Offeror Representations and Certifications—Commercial Products and Commercial Services.
    … sold or traded by the offeror (or subcontractor in the case of an exempt subcontract) in substantial quantities to the general public in the course of normal business operations; (ii) The services will be furnished at prices which are, or…
  • FAR 52.216-5 Price Redetermination—Prospective.
    … in this contract. If at any time it appears that the then-current billing prices will be substantially greater than the estimated final prices, or if the Contractor submits data showing that the redetermined price will be substantially gre…
  • FAR 52.216-6 Price Redetermination—Retroactive.
    … in this contract. If at any time it appears that the then-current billing prices will be substantially greater than the estimated final prices, or if the Contractor submits data showing that the redetermined prices will be substantially gr…
  • FAR 52.216-16 Incentive Price Revision—Firm Target.
    …e contractor under subparagraph (g)(2) below that the then-current billing prices will be substantially greater than the estimated final prices, the parties shall negotiate a reduction in the billing prices. Similarly, the parties may negot…
  • FAR 52.216-17 Incentive Price Revision—Successive Targets.
    …e contractor under subparagraph (i)(1) below that the then-current billing prices will be substantially greater than the estimated final prices, the parties shall negotiate a reduction in the billing prices. Similarly, the parties may negot…
  • FAR 52.227-11 Patent Rights—Ownership by the Contractor.
    …bject invention or produced through the use of the subject invention will be manufactured substantially in the United States. However, in individual cases, the requirement for an agreement may be waived by the agency upon a showing by the C…
  • FAR 52.227-13 Patent Rights—Ownership by the Government.
    …bject invention or produced through the use of the subject invention will be manufactured substantially in the United States. However, in individual cases, the requirement may be waived by the agency upon a showing by the Contractor or assi…
  • FAR 52.232-7 Payments under Time-and-Materials and Labor-Hour Contracts.
    …on to believe that the total price to the Government for performing this contract will be substantially greater or less than the then stated ceiling price, the Contractor shall so notify the Contracting Officer, giving a revised estimate of…
  • DFARS 217.171 Multiyear contracts for services.
    …plans for the proposed contract period; (2) Furnishing the services will require— (i) A substantial initial investment in plant or equipment; or (ii) The incurrence of substantial contingent liabilities for the assembly, training, or tra…
  • DFARS 225.003 Definitions.
    …on material that consists in whole or in part of materials from another country, has been substantially transformed in an SC/CASA state into a new and different construction material distinct from the material from which it was transformed.…
  • DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).
    …bject invention or produced through the use of the subject invention will be manufactured substantially in the United States. However, in individual cases, the agency may waive the requirement for an exclusive license agreement upon a showi…

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.