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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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40 sections with “effective date of purchase”

  • FAR 42.1204 Applicability of novation agreements.
    …d transferee stating that the transfer was properly effected under applicable law and the effective date of transfer. (6) Balance sheets of the transferor and transferee as of the dates immediately before and after the transfer of assets, …
  • FAR 52.207-5 Option To Purchase Equipment.
    …y exercise this option only by providing a unilateral modification to the Contractor. The effective date of the purchase will be specified in the unilateral modification and may be any time during the period of the contract, including any e…
  • FAR 52.249-2 Termination for Convenience of the Government (Fixed-Price).
    …ng to the Contractor a Notice of Termination specifying the extent of termination and the effective date. (b) After receipt of a Notice of Termination, and except as directed by the Contracting Officer, the Contractor shall immediately pro…
  • FAR 52.249-3 Termination for Convenience of the Government (Dismantling, Demolition, or Removal of Improvements).
    …ng to the Contractor a Notice of Termination specifying the extent of termination and the effective date. Upon receipt of the notice, if title to property is vested in the Contractor under this contract, it shall revest in the Government re…
  • DFARS 225.7004-6 Waiver of restrictions.
    …egister and submitted to the congressional defense committees at least 15 days before the effective date of the waiver. (iii) The effective period of the waiver shall not exceed 1 year. (iv) For contracts entered into prior to the effecti…
  • FAR 52.249-5 Termination for Convenience of the Government (Educational and Other Nonprofit Institutions).
    …ng to the Contractor a Notice of Termination specifying the extent of termination and the effective date. (b) After receipt of a Notice of Termination and except as directed by the Contracting Officer, the Contractor shall immediately proc…
  • FAR 15.404-4 Profit.
    …overnment and contractors should be concerned with profit as a motivator of efficient and effective contract performance. Negotiations aimed merely at reducing prices by reducing profit, without proper recognition of the function of profit,…
  • FAR 32.904 Determining payment due dates.
    …nt amount is subject to contract settlement actions, acceptance is deemed to occur on the effective date of the contract settlement. (B) For the sole purpose of computing an interest penalty that might be due the contractor— (1) Governmen…
  • FAR 42.1205 Agreement to recognize contractor's change of name.
    …tating that the change of name was properly effected under applicable law and showing the effective date. (3) A list of all affected contracts and purchase orders remaining unsettled between the contractor and the Government, showing for e…
  • FAR 2.101 Definitions.
    …can also mean the furnishing of professional advice or assistance rendered to improve the effectiveness of Federal management processes or procedures (including those of an engineering and technical nature). In rendering the foregoing servi…
  • FAR 49.302 Discontinuance of vouchers.
    …al) after the last day of the sixth month following the month in which the termination is effective. The contractor may elect to stop using vouchers at any time during the 6-month period. When the contractor has vouchered out all costs with…
  • FAR 49.601-2 Letter notice.
    …me and address of company, contract number of terminated contract, line items, etc.] (a) Effective date of termination. This confirms the Government's electronic notice to you dated ______________________, 20____, terminating _____________…
  • FAR 52.249-6 Termination (Cost-Reimbursement).
    …f the Contractor or for convenience of the Government, the extent of termination, and the effective date. If, after termination for default, it is determined that the Contractor was not in default or that the Contractor's failure to perform…
  • FAR 53.243 Contract modifications (SF 30).
    …15.210(b). Pending the publication of a new edition of the form, Instruction (b), Item 3 (effective date), is revised in paragraphs (3) and (5) as follows: (b) Item 3 (effective date). (3) For a modification issued as a confirming notice …
  • DFARS 252.245-7005 Management and Reporting of Government Property.
    …nd management of Government-owned scrap. The process shall, at a minimum, provide for the effective and efficient disposition of scrap, including sales to scrap dealers, so as to minimize costs, maximize sales proceeds, and contain the nece…
  • FAR 22.605 Rulings and interpretations of the statute.
    …the aggregate amount of all orders estimated to be placed thereunder for 1 year after the effective date of the agreement will not exceed $20,000. A determination shall be made annually thereafter if the contract or agreement is extended, a…
  • FAR 52.241-3 Scope and Duration of Contract.
    …ly prorated for the periods in which commencement and termination of this contract become effective. (End of clause)
  • FAR 52.245-1 Government Property.
    …and maintain the processes, systems, procedures, records, and methodologies necessary for effective and efficient control of Government property. The Contractor shall disclose any significant changes to its property management system to the…
  • FAR 22.1003-4 Administrative limitations, variations, tolerances, and exemptions.
    …e, and the contract shall become subject to the Service Contract Labor Standards statute, effective as of the date of the Department of Labor determination. In such case, the procedures at 29 CFR 4.123(e)(1)(iv) and 29 CFR 4.5(c) shall be f…
  • FAR 31.205-6 Compensation for personal services.
    …e of providing PRB to retirees. The assets shall be segregated in the trust, or otherwise effectively restricted, so that they cannot be used by the employer for other purposes. (C) Be calculated in accordance with generally accepted actua…
  • FAR 52.216-21 Requirements.
    …CT 1995) (a) This is a requirements contract for the supplies or services specified, and effective for the period stated, in the Schedule. The quantities of supplies or services specified in the Schedule are estimates only and are not purc…
  • FAR 52.216-22 Indefinite Quantity.
    … (a) This is an indefinite-quantity contract for the supplies or services specified, and effective for the period stated, in the Schedule. The quantities of supplies and services specified in the Schedule are estimates only and are not pur…
  • DFARS 252.225-7040 Contractor Personnel Supporting U.S. Armed Forces Deployed Outside the United States.
    …nterests of the Government to provide security because— (A) The Contractor cannot obtain effective security services; (B) Effective security services are unavailable at a reasonable cost; or (C) Threat conditions necessitate security thr…
  • FAR 19.704 Subcontracting plan requirements.
    …9, Small Business Subcontracting Plan, except goals. Master subcontracting plans shall be effective for a 3-year period after approval by the contracting officer; however, it is incumbent upon contractors to maintain and update master subco…
  • FAR 31.205-42 Termination costs.
    …nable efforts by the contractor, costs which cannot be discontinued immediately after the effective date of termination are generally allowable. However, any costs continuing after the effective date of the termination due to the negligent …
  • FAR 52.241-9 Connection Charge.
    …2) To remove such facilities at the Contractor's own expense within ____ months after the effective date of the termination by the Government. If the Contractor elects to remove such facilities, the Government shall then have the option of …
  • FAR 16.703 Basic ordering agreements.
    …2) Each basic ordering agreement shall be reviewed annually before the anniversary of its effective date and revised as necessary to conform to the requirements of this regulation. Basic ordering agreements may need to be revised before the…
  • FAR 19.102 Small business size standards and North American Industry Classification System codes.
    …solicitation and use the new size standard if SBA amends the size standard and it becomes effective before the due date for receipt of initial offers.
  • FAR 19.201 General policy.
    …s is placed with small business. (b) Heads of contracting activities are responsible for effectively implementing the small business programs within their activities, including achieving program goals. They are to ensure that contracting a…
  • FAR 19.306 Protesting a firm's status as a HUBZone small business concern.
    …, the protester, and the protested concern of the SBA determination. The determination is effective immediately and is final unless overturned on appeal by SBA's Associate Administrator, Office of Government Contracting and Business Develop…
  • FAR 19.307 Protesting a firm's status as a service-disabled veteran-owned small business concern.
    …acting officer, the protester, and the protested concern of its decision. The decision is effective immediately and is final. (1) If the contracting officer has withheld contract award and OHA has determined that the protested concern is a…
  • FAR 19.308 Protesting a firm's status as an economically disadvantaged women-owned small business concern or women-owned small business concern eligible under the Women-Owned Small Business Program.
    …icer, the protester, and the protested concern of its determination. The determination is effective immediately and is final unless overturned on appeal by OHA pursuant to 13 CFR part 134. (1) If the contracting officer has withheld contra…
  • FAR 23.107-2 Biobased products.
    … Under Service and Construction Contracts); and (iv) Annual review and monitoring of the effectiveness of the program. (2) Technical or requirements personnel and procurement personnel are responsible for the preparation, implementation, …
  • FAR 32.202-4 Security for Government financing.
    …ent's security is in the form of a lien, such lien is paramount to all other liens and is effective immediately upon the first payment, without filing, notice, or other action by the United States. (2) When the Government's security is in …
  • FAR 49.108-4 Authorization for subcontract settlements without approval or ratification.
    …ding 2 years, the TCO shall revoke the authorization by written notice to the contractor, effective on the date of receipt. (d) The contractor may make any number of separate settlements with a single subcontractor but shall not divide set…
  • FAR 49.205 Completed end items.
    (a) Promptly after the effective date of termination, the TCO shall (1) have all undelivered completed end items inspected and accepted if they comply with the contract requirements, and (2) determine which accepted end items are to be deli…
  • FAR 49.206-2 Bases for settlement proposals.
    … termination, the contractor must itemize all costs incurred under the contract up to the effective date of termination. The costs of settlements with subcontractors and applicable settlement expenses must also be added. An allowance for pr…
  • FAR 51.102 Authorization to use Government supply sources.
    …etter of authorization to the contractor; (3) The prime contract number(s); and (4) The effective date and duration of each contract. (e) In each authorization to the contractor, the contracting officer— (1) Shall cite the contract numb…
  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    … contract) determined by multiplying the number of direct labor hours expended before the effective date of termination by the hourly rate(s) in the contract, less any hourly rate payments already made to the Contractor plus reasonable char…
  • FAR 52.219-9 Small Business Subcontracting Plan.
    …or an untimely payment to a small business subcontractor (see 52.242-5). (e) In order to effectively implement this plan to the extent consistent with efficient contract performance, the Contractor shall perform the following functions: (…

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.