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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280 sections with “interest clause”: the first 40

  • FAR 32.608-2 Interest credits.
    (a) An equitable interest credit shall be applied under the following circumstances: (1) When the amount of debt initially determined is subsequently reduced; e.g., through a successful appeal. (2) When any amount collected by the Governm…
  • FAR 32.907 Interest penalties.
    (a) Late payment. The designated payment office will pay an interest penalty automatically, without request from the contractor, when all of the following conditions, if applicable, have been met: (1) The designated billing office received…
  • FAR 33.208 Interest on claims.
    (a) The Government shall pay interest on a contractor's claim on the amount found due and unpaid from the date that— (1) The contracting officer receives the claim (certified if required by 33.207(a)); or (2) Payment otherwise would be du…
  • FAR 52.203-16 Preventing Personal Conflicts of Interest.
    As prescribed in 3.1106, insert the following clause: Preventing Personal Conflicts of Interest (JUN 2020) (a) Definitions. As used in this clause— Acquisition function closely associated with inherently governmental functions means supp…
  • FAR 52.232-17 Interest.
    As prescribed in 32.611(a) and (b), insert the following clause: Interest (MAY 2014) (a) Except as otherwise provided in this contract under a Price Reduction for Defective Certified Cost or Pricing Data clause or a Cost Accounting Standa…
  • DFARS 252.209-7007 Prohibited Financial Interests for Lead System Integrators.
    As prescribed in 209.570-4(b), use the following clause: Prohibited Financial Interests for Lead System Integrators (DEC 2022) (a) Definitions. As used in this clause— (1) Lead system integrator includes lead system integrator with syste…
  • DFARS 252.209-7008 Notice of Prohibition Relating to Organizational Conflict of Interest—Major Defense Acquisition Program.
    …se the following provision: Notice of Prohibition Relating to Organizational Conflict of Interest—Major Defense Acquisition Program (DEC 2010) (a) Definitions. “Major subcontractor” is defined in the clause at 252.209-7009, Organizational…
  • DFARS 252.209-7009 Organizational Conflict of Interest—Major Defense Acquisition Program.
    As prescribed in 209.571-8(b), use the following clause: Organizational Conflict of Interest—Major Defense Acquisition Program (MAY 2019) (a) Definition. As used in this clause— Major subcontractor means a subcontractor that is awarded a…
  • FAR 32.608-1 Interest charges.
    Unless specified otherwise in the clause at 52.232-17, Interest, interest charges shall apply to any contract debt unpaid after 30 days from the issuance of a demand unless— (a) The contract is a kind excluded under 32.611; or (b) The con…
  • FAR 52.209-6 Protecting the Government's Interest When Subcontracting With Contractors Debarred, Suspended, Proposed for Debarment, or Voluntarily Excluded.
    As prescribed in 9.409, insert the following clause: Protecting the Government's Interest When Subcontracting With Contractors Debarred, Suspended, Proposed for Debarment, or Voluntarily Excluded (JAN 2025) (a) Definition. Commercially av…
  • FAR 52.216-5 Price Redetermination—Prospective.
    …n 30 days after the end of the data submittal period, the amount of the excess shall bear interest, computed from the date the data were due to the date of repayment, at the rate established in accordance with the Interest clause. (e) Pric…
  • FAR 52.216-6 Price Redetermination—Retroactive.
    …n 30 days after the end of the data submittal period, the amount of the excess shall bear interest, computed from the date the data were due to the date of repayment, at the rate established in accordance with the Interest clause. (d) Pric…
  • FAR 52.216-16 Incentive Price Revision—Firm Target.
    …n 30 days after the end of the data submittal period, the amount of the excess shall bear interest, computed from the date the data were due to the date of repayment, at the rate established in accordance with the Interest clause. (d) Pric…
  • FAR 52.216-17 Incentive Price Revision—Successive Targets.
    …n 30 days after the end of the data submittal period, the amount of the excess shall bear interest, computed from the date the data were due to the date of repayment, at the rate established in accordance with the Interest clause. (d) Esta…
  • DFARS 209.571-8 Solicitation provision and contract clause.
    …e provision at 252.209-7008, Notice of Prohibition Relating to Organizational Conflict of Interest—Major Defense Acquisition Program, if the solicitation includes the clause at 252.209-7009, Organizational Conflict of Interest—Major Defense…
  • FAR 2.101 Definitions.
    … 3201.2). Broad agency announcement means 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…
  • FAR 3.1103 Procedures.
    … Have procedures in place to screen covered employees for potential personal conflicts of interest by— (i) Obtaining and maintaining from each covered employee, when the employee is initially assigned to the task under the contract, a disc…
  • FAR 3.1104 Mitigation or waiver.
    …nal circumstances, if the contractor cannot satisfactorily prevent a personal conflict of interest as required by paragraph (b)(2)(i) of the clause at 52.203-16, Preventing Personal Conflicts of Interest, the contractor may submit a request…
  • FAR 9.504 Contracting officer responsibilities.
    …cquisitions in order to— (1) Identify and evaluate potential organizational conflicts of interest as early in the acquisition process as possible; and (2) Avoid, neutralize, or mitigate significant potential conflicts before contract awar…
  • FAR 15.407-1 Defective certified cost or pricing data.
    …n to the price adjustment, the Government is entitled to recovery of any overpayment plus interest on the overpayments. The Government is also entitled to penalty amounts on certain of these overpayments. Overpayment occurs only when paymen…
  • FAR 19.302 Protesting a small business representation or rerepresentation.
    …s are found at 13 CFR part 121. (2) An offeror, the contracting officer, SBA, or another interested party may protest the small business representation of an offeror in a specific offer for a contract. However, for competitive 8(a) contrac…
  • FAR 27.201-2 Contract clauses.
    …tified patents (see paragraph (e) of this subsection). (e) It may be in the Government's interest to exempt specific U.S. patents from the patent indemnity clause. Exclusion from indemnity of identified patents, as distinguished from items…
  • FAR 27.202-5 Solicitation provisions and contract clause.
    …bove the contracting officer as being necessary for proper protection of the Government's interests. (2) If the solicitation is for communication services and facilities by a common carrier, use the provision with its Alternate I. (b) If …
  • FAR 27.303 Contract clauses.
    …ate I, if the agency head determines, at contract award, that it would be in the national interest to sublicense foreign governments or international organizations pursuant to any existing or future treaty or agreement. When necessary to ef…
  • FAR 32.410 Findings, determination, and authorization.
    …g unusual facts and circumstances favor making advance payments to the Contractor without interest: [List the pertinent facts and circumstances.] Determination (b) Based on the findings in (a) above, the undersigned determined that the m…
  • FAR 32.604 Demand for payment.
    …e date identified in the demand for payment. (3) The basis for and amount of any accrued interest or penalty. (4)(i) For debts resulting from specific contract terms (e.g., debts resulting from incentive clause provisions, Quarterly Limit…
  • FAR 32.607-2 Deferment of collection.
    …l to avoid possible overcollections. The agency is required to use unexpired funds to pay interest on overcollections. (e) Deferments pending disposition of appeal may be granted to small business concerns and financially weak contractors,…
  • FAR 32.611 Contract clause.
    (a) The contracting officer shall insert the clause at 52.232—17, Interest, in solicitations and contracts unless it is contemplated that the contract will be in one or more of the following categories: (1) Contracts at or below the simpli…
  • FAR 32.904 Determining payment due dates.
    … the effective date of the contract settlement. (B) For the sole purpose of computing an interest penalty that might be due the contractor— (1) Government acceptance is deemed to occur constructively on the 7th day after the contractor de…
  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    …de a copy of the remittance and supporting documentation to the Contracting Officer. (6) Interest. (i) All amounts that become payable by the Contractor to the Government under this contract shall bear simple interest from the date due unt…
  • FAR 52.229-4 Federal, State, and Local Taxes (State and Local Adjustments).
    …supplies covered by this contract, or any tax assessed on the Contractor's possession of, interest in, or use of property, title to which is in the Government. Local taxes includes taxes imposed by a possession or territory of the United S…
  • FAR 52.229-6 Taxes—Foreign Fixed-Price Contracts.
    …supplies covered by this contract, or any tax assessed on the Contractor's possession of, interest in, or use of property, title to which is in the U.S. Government. (c)(1) Unless otherwise provided in this contract, the contract price incl…
  • FAR 52.232-12 Advance Payments.
    …1) the Contractor has liquidated all advance payments made under the contract and related interest charges and (2) the administering office has approved in writing the release of any funds due and payable to the Contractor, all advance paym…
  • FAR 52.232-25 Prompt payment.
    …r invoice. The Government will take into account untimely notification when computing any interest penalty owed the Contractor. (i) Name and address of the Contractor. (ii) Invoice date and invoice number. (The Contractor should date invo…
  • FAR 52.232-26 Prompt Payment for Fixed-Price Architect-Engineer Contracts.
    …7 days after receipt, with the reasons why it is not a proper invoice. When computing any interest penalty owed the Contractor, the Government will take into account if the Government notifies the Contractor of an improper invoice in an unt…
  • FAR 52.232-27 Prompt Payment for Construction Contracts.
    …7 days after receipt, with the reasons why it is not a proper invoice. When computing any interest penalty owed the Contractor, the Government will take into account if the Government notifies the Contractor of an improper invoice in an unt…
  • FAR 52.249-2 Termination for Convenience of the Government (Fixed-Price).
    …, in part if the Contracting Officer determines that a termination is in the Government's interest. The Contracting Officer shall terminate by delivering to the Contractor a Notice of Termination specifying the extent of termination and the…
  • FAR 52.249-3 Termination for Convenience of the Government (Dismantling, Demolition, or Removal of Improvements).
    …, in part if the Contracting Officer determines that a termination is in the Government's interest. The Contracting Officer shall terminate by delivering to the Contractor a Notice of Termination specifying the extent of termination and the…
  • FAR 52.249-6 Termination (Cost-Reimbursement).
    …rt, if— (1) The Contracting Officer determines that a termination is in the Government's interest; or (2) The Contractor defaults in performing this contract and fails to cure the default within 10 days (unless extended by the Contracting…
  • DFARS 212.301 Solicitation provisions and contract clauses for the acquisition of commercial products and commercial services.
    …A), Pub. L. 114-328). (i) Part 203—Improper Business Practices and Personal Conflicts of Interest. (A) Use the FAR clause at 52.203-3, Gratuities, as prescribed in FAR 3.202, to comply with 10 U.S.C. 4651. (B) Use the clause at 252.203-70…

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.