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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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46 sections with “interest charges”: the first 40

  • 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 32.407 Interest.
    (a) Except as provided in paragraph (d) below, the contracting officer shall charge interest on the daily unliquidated balance of all advance payments at the higher of— (1) The published prime rate of the financial institution (depository)…
  • 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 52.245-9 Use and Charges.
    … identified in this contract, unless otherwise specified by the Contracting Officer. (2) Interest will be charged if payment is not made by the date specified in paragraph (f)(1) of this clause. Interest will accrue at the “Renegotiation B…
  • 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 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 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 52.229-6 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 52.249-2 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…
  • DFARS 209.104-1 General standards.
    …A) of this section upon determining that the waiver is essential to the national security interests of the United States. The Secretary has delegated authority to grant this waiver to the Under Secretary of Defense for Intelligence. Waiver …
  • FAR 49.603-3 Cost-reimbursement contracts—complete termination, if settlement includes cost.
    …he Contractor transfers, conveys, and assigns to the Government all the right, title, and interest, if any, that the Contractor has received, or is entitled to receive, in and to subcontract termination inventory not otherwise properly acco…
  • FAR 31.205-35 Relocation costs.
    …nds (exclusive of fixing up expenses), utilities, taxes, property insurance, and mortgage interest, after the settlement date or lease date of a new permanent residence, except that these costs, when added to the costs described in paragrap…
  • FAR 32.409-1 Recommendation for approval.
    …approval of the advance payment request. (h) Justification of any proposal for waiver of interest charges (see 32.407).
  • FAR 42.302 Contract administration functions.
    …vices on excess Government property. When the ACO determines it to be in the Government's interests, the services may be secured from a contractor other than the contractor in possession of the property. (30) When contractors request Gover…
  • FAR 49.112-2 Final payment.
    …shall determine the amount to be withheld from the final payment (see subpart 22.4). (d) Interest. The Government shall not pay interest on the amount due under a settlement agreement or a settlement by determination. The Government may, h…
  • FAR 52.249-5 Termination for Convenience of the Government (Educational and Other Nonprofit Institutions).
    …, 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…
  • DFARS 232.611 Contract clause.
    …2) through (5) and other contracts, in exceptional circumstances, from the administrative interest charges required by this subpart. (7) Other exceptions are— (A) Contracts for instructions of military or ROTC personnel at civilian school…
  • DFARS 235.015-70 Special use allowances for research facilities acquired by educational institutions.
    …al special use allowance; (iii) Do not include or allow— (A) The costs of land; or (B) Interest charges on capital; (iv) Do not include maintenance, utilities, or other operational costs; (v) The period of allowance generally will be— …
  • DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).
    …xtension unless there is reason to believe the extension would prejudice the Government's interests. (d) Government's rights—(1) Ownership. The Contractor shall assign to the agency, upon written request, title to any subject invention— (…
  • FAR 31.109 Advance agreements.
    … part. For example, an advance agreement may not provide that, notwithstanding 31.205-20, interest is allowable. (d) Advance agreements may be negotiated with a particular contractor for a single contract, a group of contracts, or all the …
  • FAR 32.005 Consideration for contract financing.
    …g capital. (2) The estimated profit rate to be earned through contract performance. (c) Interest. Except as provided in subpart 32.4, Advance Payments for Other Than Commercial Acquisitions, the contract shall not provide for any other ty…
  • FAR 32.402 General.
    …reasonably available to the contractor in adequate amounts. Loans and credit at excessive interest rates or other exorbitant charges, or loans from other Government agencies, are not considered reasonably available financing. (c) If statut…
  • FAR 41.402 Rate changes and regulatory intervention.
    …. (b) If a change is proposed to rates or terms and conditions of service that may be of interest to other Federal agencies, and intervention before a regulatory body is considered justified, the matter shall be referred to GSA. The agency…
  • FAR 49.502 Termination for convenience of the Government.
    … or their agencies, and if the contracting officer determines that the requirement to pay interest on excess partial payments is inappropriate, the contracting officer shall use the clause with its Alternate II. In such contracts for constr…
  • FAR 52.232-7 Payments under Time-and-Materials and Labor-Hour Contracts.
    …in an amount that the Contracting Officer considers necessary to protect the Government's interests. The Contracting Officer may require a withhold of 5 percent of the amounts due under paragraph (a) of this clause, but the total amount wit…
  • DFARS 252.227-7013 Rights in Technical Data—Other Than Commercial Products and Commercial Services.
    … manufacturing or process data, when use of such data by the foreign government is in the interest of the Government and is required for evaluational or informational purposes; (2) The recipient of the technical data is subject to a prohib…
  • 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.
    … manufacturing or process data, when use of such data by the foreign government is in the interest of the Government and is required for evaluational or informational purposes; (2) The recipient of the technical data is subject to a prohib…
  • FAR 12.403 Termination.
    …ces either for convenience or for cause only when such a termination would be in the best interests of the Government. The contracting officer should consult with counsel prior to terminating for cause. (c) Termination for cause. (1) The p…
  • FAR 16.601 Time-and-materials contracts.
    … analysis of pricing and other relevant factors to determine if the action is in the best interest of the Government; (2) Document the decision in the contract or order file; and (3) When making a change that modifies the general scope of…
  • FAR 17.106-1 General.
    … the applicable contract. (f) Presolicitation or pre-bid conferences. To ensure that all interested sources of supply are thoroughly aware of how multiyear contracting is accomplished, use of presolicitation or pre-bid conferences may be a…
  • FAR 31.105 Construction and architect-engineer contracts.
    …ment contract costing purposes if they are based on replacement cost, include unallowable interest costs, or use improper cost of money rates or computations. Contracting officers should review the computations and factors included within t…
  • FAR 31.205-36 Rental costs.
    …reciation, taxes, insurance, facilities capital cost of money, and maintenance (excluding interest or other unallowable costs pursuant to part 31), provided that no part of such costs shall duplicate any other allowed cost. Rental cost of p…
  • FAR 32.303 General.
    …es: (1) Regulations governing the actions and operations of fiscal agents. (2) Rates of interest, guarantee and commitment fees, and other charges that may be made for loans, discounts, advances, or commitments guaranteed by the guarantee…
  • FAR 32.403 Applicability.
    …sume a reasonable portion of the risk under a guaranteed loan; (2) Loans with reasonable interest rates or finance charges are not available to the contractor; or (3) Contracts involve operations so remote from a financial institution tha…
  • FAR 32.600 Scope of subpart.
    …edures for identifying, collecting, and deferring collection of contract debts (including interest, if applicable). Sections 32.607, 32.608, and 32.610 of this subpart do not apply to claims against common carriers for transportation overch…
  • FAR 32.606 Debt collection.
    …s or deferment of collection, the payment office shall initiate withholding of principal, interest, penalties, and administrative charges. In the event the contract is assigned under the Assignment of Claims Act of 1940 (31 U.S.C. 3727 and …
  • FAR 45.301 Use and rental.
    …ch, development, or educational work and— (1) The use of the property is in the national interest; (2) The property will not be used for the direct benefit of a profit-making organization; and (3) The Government receives some direct bene…
  • FAR 52.213-4 Terms and Conditions—Simplified Acquisitions (Other Than Commercial Products and Commercial Services).
    …r transiting through its information system.) (ii) 52.209-6, Protecting the Government's Interest When Subcontracting with Contractors Debarred, Suspended, Proposed for Debarment, or Voluntarily Excluded (JAN 2025) (Applies to contracts ov…
  • FAR 52.227-13 Patent Rights—Ownership by the Government.
    …efore final payment under this contract, the Contracting Officer may, in the Government's interest, withhold payment until a reserve not exceeding $50,000 or 5 percent of the amount of this contract, whichever is less, shall have been set a…
  • FAR 52.236-14 Availability and Use of Utility Services.
    …s of both the Government and the contractor, and (b) furnishing it is in the Government's interest. When this clause is used, the contracting officer shall list the available utilities in the contract. Availability and Use of Utility Servi…

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.