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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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23 sections with “supplemental agreements”

  • FAR 42.302 Contract administration functions.
    …d disclosure statements, if applicable; and (iv) Negotiate price adjustments and execute supplemental agreements under the Cost Accounting Standards clauses at 48 CFR 52.230-2, 52.230-3, 52.230-4, 52.230-5, and 52.230-6. (12) Determine th…
  • DFARS 237.7204 Format and clauses for educational service agreements.
    …yable under the Contractor's normal tuition and fee schedule, the Contractor may submit a supplemental invoice or make the adjustment on the next regular invoice under this agreement. The Contractor shall clearly identify and explain the su…
  • FAR 14.407-4 Mistakes after award.
    …rning the alleged mistake. (vii) A copy of the contract and any related change orders or supplemental agreements. (f) Each agency shall include in the contract file a record of (1) all determinations made in accordance with this 14.407-4,…
  • FAR 43.301 Use of forms.
    …kes, changes in the paying office, and changes in accounting and appropriation data; (v) Supplemental agreements (see 43.103); and (vi) Removal, reinstatement, or addition of funds to a contract. (2) The SF 30 may be used for (i) modific…
  • FAR 27.303 Contract clauses.
    …ation is not required elsewhere in the contract, and unless otherwise specified by agency supplemental regulations, the contracting officer may modify 52.227-11(e) or otherwise supplement the clause to require the contractor to do one or mo…
  • FAR 31.205-6 Compensation for personal services.
    …able to all participants of the basic plan are not allowable as pension costs, unless the supplemental benefits represent a separate pension plan and the benefits are payable for life at the option of the employee. (iv) Increases in paymen…
  • FAR 32.411 Agreement for special account at a financial institution.
    …_, 20____, the Government and the Contractor entered into Contract No. ____, or a related supplemental agreement, providing for advance payments to the Contractor. A copy of the advance payment terms was furnished to the financial instituti…
  • FAR 2.101 Definitions.
    … and substance of the FAR provision or clause or related coverage of the subject matter. Supplemental agreement means a contract modification that is accomplished by the mutual action of the parties. Supplies means all property except lan…
  • FAR 4.606 Reporting Data.
    …a contract action using a mix of appropriated and nonappropriated funding. (3) Lease and supplemental lease agreements for real property. (4) Grants and entitlement actions. (c) Actions not reported. The following types of contract actio…
  • FAR 42.1503 Procedures.
    …” which would be exempted from public availability in accordance with section 3010 of the Supplemental Appropriations Act, 2010 (Pub. L. 111-212). Therefore, all such information posted in FAPIIS will be publicly available, unless covered b…
  • FAR 43.103 Types of contract modifications.
    …tract modifications are of the following types: (a) Bilateral. A bilateral modification (supplemental agreement) is a contract modification that is signed by the contractor and the contracting officer. Bilateral modifications are used to— …
  • FAR 49.603-1 Fixed-price contracts—complete termination.
    …ck 14 of SF 30 for settlements of fixed-price contracts completely terminated.] (a) This supplemental agreement settles the settlement proposal resulting from the Notice of Termination dated ________________________. (b) The parties agree…
  • FAR 49.603-2 Fixed-price contracts—partial termination.
    …ock 14 of SF 30 for settlements of fixed-price contracts partially terminated.] (a) This supplemental agreement settles the settlement proposal resulting from the Notice of Termination dated __________________. (b) The parties agree to th…
  • FAR 49.603-3 Cost-reimbursement contracts—complete termination, if settlement includes cost.
    …sement contracts that are completely terminated, if settlement includes costs.] (a) This supplemental agreement settles the settlement proposal resulting from the Notice of Termination dated __________________. (b) The parties agree to th…
  • FAR 49.603-4 Cost-reimbursement contracts—complete termination, with settlement limited to fee.
    …ent contracts that are completely terminated, if settlement is limited to fee.] (a) This supplemental agreement settles the amount of fee due under the contract, terminated in its entirety by Notice of Termination dated __________. (b) Th…
  • FAR 49.603-5 Cost-reimbursement contracts—partial termination.
    …greements for cost-reimbursement contracts as a result of partial termination.] (a) This supplemental agreement settles the termination settlement proposal resulting from the Notice of Termination dated ______________. (b) The parties agr…
  • FAR 52.216-5 Price Redetermination—Prospective.
    … that it becomes available before negotiations on redetermined prices are concluded— (i) Supplemental statements of costs incurred after the date stated in subdivision (d)(1)(ii) above for— (A) Supplies delivered and services performed; a…
  • FAR 52.216-7 Allowable Cost and Payment.
    …ns, level of effort, and indicate if the contract is ready to close). (iv) The following supplemental information is not required to determine if a proposal is adequate, but may be required during the audit process: (A) Comparative analys…
  • FAR 52.216-17 Incentive Price Revision—Successive Targets.
    …comes available before negotiations establishing the total firm price are concluded— (i) Supplemental statements of costs incurred after the end of the month specified in subparagraph (1) above for— (A) Supplies delivered and services per…
  • FAR 52.227-11 Patent Rights—Ownership by the Contractor.
    …o 35 U.S.C. 203 and 210(c), and in accordance with the procedures in 37 CFR 401.6 and any supplemental regulations of the agency in effect on the date of contract award. (i) Special provisions for contracts with nonprofit organizations. If…
  • FAR 52.227-13 Patent Rights—Ownership by the Government.
    …C. 203 and 210(c) and in accordance with the procedures set forth in 37 CFR 401.6 and any supplemental regulations of the agency in effect on the date of the contract award. (iii) Upon request, the Contractor shall submit periodic reports …
  • DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).
    …he right to require licensing pursuant to 35 U.S.C. 203 and 210(c), 37 CFR 401.6, and any supplemental regulations of the agency in effect on the date of contract award. (i) Other inventions. Nothing contained in this clause shall be deeme…
  • DFARS 252.247-7002 Revision of prices.
    …3) The agreement reached after each negotiation will be incorporated into the contract by supplemental agreement. (f) Disagreements. If, within 30 days after the date on which statements and data are required pursuant to paragraph (c) of t…

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.