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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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47 sections with “duplicate”: the first 40

  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    …c funds transfer payment is made. (5) Overpayments. If the Contractor becomes aware of a duplicate contract financing or invoice payment or that the Government has otherwise overpaid on a contract financing or invoice payment, the Contract…
  • FAR 15.609 Limited use of data.
    …roposal includes data that shall not be disclosed outside the Government and shall not be duplicated, used, or disclosed—in whole or in part—for any purpose other than to evaluate this proposal. However, if a contract is awarded to this off…
  • FAR 52.223-3 Hazardous Material Identification and Material Safety Data.
    …ished under this contract with respect to hazardous material are as follows: (1) To use, duplicate and disclose any data to which this clause is applicable. The purposes of this right are to— (i) Apprise personnel of the hazards to which …
  • FAR 31.205-6 Compensation for personal services.
    …accordance with paragraphs (o)(2)(iii)(D), (E), and (F) of this section to ensure that no duplicate recovery of costs exists. Any duplicate recovery of costs due to the change from one method to another is unallowable. The analysis and new …
  • FAR 52.215-1 Instructions to Offerors—Competitive Acquisition.
    …roposal includes data that shall not be disclosed outside the Government and shall not be duplicated, used, or disclosed—in whole or in part—for any purpose other than to evaluate this proposal. If, however, a contract is awarded to this of…
  • FAR 52.232-12 Advance Payments.
    …l notify the third person of the lien and shall obtain from the third person a receipt in duplicate acknowledging the existence of the lien. The Contractor shall provide a copy of each receipt to the Contracting Officer. (4) If, under the …
  • FAR 52.232-25 Prompt payment.
    …e date of receipt of the invoice. (d) Overpayments. If the Contractor becomes aware of a duplicate contract financing or invoice payment or that the Government has otherwise overpaid on a contract financing or invoice payment, the Contract…
  • FAR 52.232-26 Prompt Payment for Fixed-Price Architect-Engineer Contracts.
    …icable contract financing clause. (c) Overpayments. If the Contractor becomes aware of a duplicate contract financing or invoice payment or that the Government has otherwise overpaid on a contract financing or invoice payment, the Contract…
  • FAR 52.232-27 Prompt Payment for Construction Contracts.
    …rsement of such interest penalty. (l) Overpayments. If the Contractor becomes aware of a duplicate contract financing or invoice payment or that the Government has otherwise overpaid on a contract financing or invoice payment, the Contract…
  • DFARS 252.232-7011 Payments in Support of Emergencies and Contingency Operations.
    …icable contract financing clause. (5) Overpayments. If the Contractor becomes aware of a duplicate contract financing or invoice payment or that the Government has otherwise overpaid on a contract financing or invoice payment, the Contract…
  • FAR 4.802 Contract files.
    …tract actions; (2) Ready accessibility to principal users; (3) Minimal establishment of duplicate and working files; (4) The safeguarding of classified documents; and (5) Conformance with agency regulations for file location and mainten…
  • FAR 6.303-2 Content.
    …s described in 6.302-1(a)(2)(ii), an estimate of the cost to the Government that would be duplicated and how the estimate was derived. (iii) When 6.302-2 is cited, data, estimated cost, or other rationale as to the extent and nature of the…
  • FAR 12.215 Notification of overpayment.
    If the contractor notifies the contracting officer of a duplicate payment or that the Government has otherwise overpaid, the contracting officer shall follow the procedures at 32.604.
  • FAR 14.402-1 Unclassified bids.
    …inal bids shall not be allowed to pass out of the hands of a Government official unless a duplicate bid is not available for public inspection. The original bid may be examined by the public only under the immediate supervision of a Governm…
  • FAR 14.407-2 Apparent clerical mistakes.
    …d by attaching the verification to the original bid and a copy of the verification to the duplicate bid. Correction shall not be made on the face of the bid; however, it shall be reflected in the award document. (c) Correction of bids subm…
  • FAR 16.203-2 Application.
    …nt will be made, the contracting officer shall ensure that contingency allowances are not duplicated by inclusion in both the base price and the adjustment requested by the contractor under economic price adjustment clause. (b) In contract…
  • FAR 22.1006 Solicitation provisions and contract clauses.
    …rogram year. If a clause prescribed in 16.203-4(d) is used, it must not conflict with, or duplicate payment under, the clauses prescribed in this paragraph 22.1006(c). (d) [Reserved] (e)(1) The contracting officer shall insert the provisi…
  • FAR 22.1904 Annual Executive Order Minimum Wage Rate.
    …ts other than those identified in paragraph (b)(1) of this section, and shall not provide duplicate price adjustments with any price adjustment under clauses implementing the Service Contract Labor Standards statute or the Wage Rate Require…
  • FAR 27.303 Contract clauses.
    …patent rights clause (but if a copy of a subcontract is furnished under another clause, a duplicate shall not be requested under the patent rights clause); (ii) Submit interim and final invention reports listing subject inventions and noti…
  • FAR 31.205-36 Rental costs.
    …r other unallowable costs pursuant to part 31), provided that no part of such costs shall duplicate any other allowed cost. Rental cost of personal property leased from any division, subsidiary, or affiliate of the contractor under common c…
  • FAR 32.008 Notification of overpayment.
    If the contractor notifies the contracting officer of a duplicate payment or that the Government has otherwise overpaid, the contracting officer shall follow the procedures at 32.604.
  • FAR 32.601 General.
    …accounting practice. (7) Reinspection costs for nonconforming supplies or services. (8) Duplicate or erroneous payments. (9) Damages or excess costs related to defaults in performance. (10) Breach of contract obligations concerning prog…
  • FAR 32.602 Responsibilities.
    …ecting contract debts identified by contracting officers; (2) Identifying and collecting duplicate and erroneous payments; and (3) Authorizing the liquidation of contract debts in accordance with agency procedures.
  • FAR 32.805 Procedure.
    …er with one true copy of the instrument of assignment. The true copy shall be a certified duplicate or photostat copy of the original assignment. (c) Format for notice of assignment. The following is a suggested format for use by an assign…
  • FAR 42.002 Interagency agreements.
    (a) Agencies shall avoid duplicate audits, reviews, inspections, and examinations of contractors or subcontractors, by more than one agency, through the use of interagency agreements. (b) Subject to the fiscal regulations of the agencies a…
  • FAR 47.103-1 General.
    …or written on the face of the bill before sending it to GSA. (e) A statement prepared in duplicate by the specified agency shall accompany each shipment of transportation documents. GSA will acknowledge receipt of the shipment by signing a…
  • FAR 50.103-3 Contract adjustment.
    …Contractor requests. A contractor seeking a contract adjustment shall submit a request in duplicate to the contracting officer or an authorized representative. The request, normally a letter, shall state as a minimum— (1) The precise adjus…
  • FAR 52.222-4 Contract Work Hours and Safety Standards—Overtime Compensation.
    …ekly number of hours worked, deductions made, and actual wages paid. The records need not duplicate those required for construction work by Department of Labor regulations at 29 CFR 5.5(a)(3) implementing the Construction Wage Rate Requirem…
  • FAR 52.222-40 Notification of Employee Rights Under the National Labor Relations Act.
    …http://www.dol.gov/olms/regs/compliance/EO13496.htm; or (4) Reproduced and used as exact duplicate copies of the Department of Labor's official poster. (c) The required text of the employee notice referred to in this clause is located at …
  • FAR 52.222-55 Minimum Wages for Contractor Workers Under Executive Order 14026.
    …s other than those identified in paragraph (b)(3)(i) of this clause, and will not provide duplicate price adjustments with any price adjustment under clauses implementing the Service Contract Labor Standards statute or the Wage Rate Require…
  • FAR 52.227-13 Patent Rights—Ownership by the Government.
    …tutory bars. (5) Subject to FAR 27.302(i), the Contractor agrees that the Government may duplicate and disclose subject invention disclosures and all other reports and papers furnished or required to be furnished pursuant to this clause. …
  • FAR 52.227-19 Commercial Computer Software License.
    …overnment will have the rights that are set forth in paragraph (b) of this clause to use, duplicate or disclose any commercial computer software delivered under this contract. The terms and provisions of this contract shall comply with Fede…
  • FAR 52.236-21 Specifications and Drawings for Construction.
    …lain in detail specific portions of the work required by the contract. The Government may duplicate, use, and disclose in any manner and for any purpose shop drawings delivered under this contract. (e) If this contract requires shop drawin…
  • FAR 52.248-1 Value Engineering.
    …lue Engineering clause of contract ____, shall not be disclosed outside the Government or duplicated, used, or disclosed, in whole or in part, for any purpose other than to evaluate a value engineering change proposal submitted under the cl…
  • FAR 52.248-3 Value Engineering—Construction.
    …ng—Construction clause of contract ____, shall not be disclosed outside the Government or duplicated, used, or disclosed, in whole or in part, for any purpose other than to evaluate a value engineering change proposal submitted under the cl…
  • DFARS 204.805 Disposal of contract files.
    …o the General Services Administration Federal Records Center that services the area. (4) Duplicate or working contract files should contain no originals of materials that properly belong in the official files. Destroy working files as soon…
  • DFARS 204.7302 Policy.
    …or Controlled Unclassified Information.” (5) The NIST SP 800-171 DoD Assessment will not duplicate efforts from any other DoD assessment or the Cybersecurity Maturity Model Certification (CMMC) (see subpart 204.75), except for rare circums…
  • DFARS 215.470 Estimated data prices.
    … successful offeror identifies any such data required by the solicitation. However, where duplicate data are desired, the contract price shall include the costs of duplication, but not of preparation, of such data.
  • DFARS 219.7104 Developmental assistance costs eligible for reimbursement or credit.
    …stance provided under an approved mentor-protégé agreement is distinct from, and must not duplicate, any effort that is the normal and expected product of the award and administration of the mentor firm's subcontracts. The mentor firm must …
  • DFARS 227.7107-1 Architectural designs and data clauses for architect-engineer or construction contracts.
    …ture, which for artistic, aesthetic or other special reasons the Government does not want duplicated, the Government may acquire exclusive control of the data pertaining to the design by including the clause at 252.227-7023, Drawings and Ot…

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.