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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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144 sections with “notice in writing”: the first 40

  • FAR 49.102 Notice of termination.
    …ontracting officer shall terminate contracts for convenience or default only by a written notice to the contractor (see 49.601). The notice of termination may be expedited by means of electronic communication capable of providing confirmati…
  • FAR 49.607 Delinquency notices.
    The formats of the delinquency notices in this section may be used to satisfy the requirements of 49.402-3. All notices will be sent with proof of delivery requested. (See subpart 42.13 for stop-work orders.) (a) Cure notice. If a contract…
  • FAR 49.104 Duties of prime contractor after receipt of notice of termination.
    After receipt of the notice of termination, the contractor shall comply with the notice and the termination clause of the contract, except as otherwise directed by the TCO. The notice and clause applicable to convenience terminations genera…
  • FAR 2.101 Definitions.
    …ute when submitted is not a claim. The submission may be converted to a claim, by written notice to the contracting officer as provided in 33.206(a), if it is disputed either as to liability or amount or is not acted upon in a reasonable ti…
  • FAR 16.505 Ordering.
    …rt by the American Recovery and Reinvestment Act of 2009 (Pub. L. 111-5) as follows: (i) Notices of proposed orders shall follow the procedures in 5.704 for posting orders. (ii) Award notices for orders shall follow the procedures in 5.70…
  • FAR 27.404-5 Unauthorized, omitted, or incorrect markings.
    …disposition of the matter by a court of competent jurisdiction. (b) Omitted or incorrect notices. (1) Data delivered under a contract containing the clause without a limited rights notice or restricted rights notice, and without a copyrigh…
  • FAR 52.219-9 Small Business Subcontracting Plan.
    …l Business Search (DSBS) at https://web.sba.gov/pro-net/search/dsp_dsbs.cfm. (5) Provide notice to subcontractors concerning penalties and remedies for misrepresentations of business status as small, veteran-owned small business, HUBZone s…
  • FAR 52.227-14 Rights in Data—General.
    …ns the rights of the Government in limited rights data as set forth in the Limited Rights Notice of paragraph (g)(3) if included in this clause. Limited rights data means data, other than computer software, that embody trade secrets or are…
  • FAR 52.227-20 Rights in Data—SBIR Program.
    …o the Government. SBIR rights means the rights in SBIR data set forth in the SBIR Rights Notice of paragraph (d) of this clause. Technical data means recorded information (regardless of the form or method of the recording) of a scientific…
  • FAR 52.246-2 Inspection of Supplies—Fixed-Price.
    …owever, the Contracting Officer may require or permit correction in place, promptly after notice, by and at the expense of the Contractor. The Contractor shall not tender for acceptance corrected or rejected supplies without disclosing the …
  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    …hall remedy such occurrence with all reasonable dispatch, and shall promptly give written notice to the Contracting Officer of the cessation of such occurrence. (g) Invoice. (1) The Contractor shall submit an original invoice and three cop…
  • FAR 52.223-7 Notice of Radioactive Materials.
    As prescribed in 23.304(b), insert the following clause: Notice of Radioactive Materials (JAN 1997) (a) The Contractor shall notify the Contracting Officer or designee, in writing, ___ * days prior to the delivery of, or prior to completi…
  • FAR 52.236-2 Differing Site Conditions.
    …a) The Contractor shall promptly, and before the conditions are disturbed, give a written notice to the Contracting Officer of (1) subsurface or latent physical conditions at the site which differ materially from those indicated in this con…
  • FAR 52.243-7 Notification of Changes.
    …sed in this clause, means any person the Contracting Officer has so designated by written notice (a copy of which shall be provided to the Contractor) which shall refer to this subparagraph and shall be issued to the designated representati…
  • FAR 52.249-3 Termination for Convenience of the Government (Dismantling, Demolition, or Removal of Improvements).
    …ent's interest. The Contracting Officer shall terminate by delivering 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 C…
  • FAR 52.249-6 Termination (Cost-Reimbursement).
    …the default within 10 days (unless extended by the Contracting Officer) after receiving a notice specifying the default. Default includes failure to make progress in the work so as to endanger performance. (b) The Contracting Officer shall…
  • DFARS 227.7005 Indirect notice of patent infringement claims.
    …nd the acknowledgement thereof. (c) If a communication covering an infringement claim or notice which does not meet the requirements of 227.7004(a) is received from a contractor, the patent owner shall be advised in writing as covered by t…
  • DFARS 252.242-7005 Contractor business systems.
    …or's business system contains material weaknesses, the final determination will include a notice to withhold payments. (e) Withholding payments. (1) If the Contracting Officer issues the final determination with a notice to withhold payme…
  • FAR 30.605 Processing noncompliances.
    …e recovery of more than the increased cost paid by the Government, in the aggregate. (b) Notice and determination. (1) Within 15 days of receiving a report of alleged noncompliance from the auditor, the CFAO shall— (i) Notify the auditor …
  • FAR 43.101 Definitions.
    …te agreed upon by the contracting parties. (3) For a modification issued as a confirming notice of termination for the convenience of the Government, the effective date of the confirming notice shall be the same as the effective date of th…
  • FAR 46.407 Nonconforming supplies or services.
    …ming services will exceed the cost to the Government of processing the modification. (g) Notices of rejection must include the reasons for rejection and be furnished promptly to the contractor. Promptness in giving this notice is essential…
  • FAR 52.209-3 First Article Approval—Contractor Testing.
    … writing, of the conditional approval, approval, or disapproval of the first article. The notice of conditional approval or approval shall not relieve the Contractor from complying with all requirements of the specifications and all other t…
  • FAR 52.209-4 First Article Approval—Government Testing.
    … writing, of the conditional approval, approval, or disapproval of the first article. The notice of conditional approval or approval shall not relieve the Contractor from complying with all requirements of the specifications and all other t…
  • FAR 52.242-5 Payments to Small Business Subcontractors.
    …t, for supplies and services for which the Government has paid the prime contractor. (b) Notice. The Contractor shall notify the Contracting Officer, in writing, not later than 14 days after— (1) A small business subcontractor was entitle…
  • FAR 52.249-2 Termination for Convenience of the Government (Fixed-Price).
    …ent's interest. The Contracting Officer shall terminate by delivering 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 direct…
  • FAR 52.249-5 Termination for Convenience of the Government (Educational and Other Nonprofit Institutions).
    …ent's interest. The Contracting Officer shall terminate by delivering 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 directe…
  • DFARS 252.217-7012 Liability and insurance.
    …ernment under this clause. (f) The Contractor shall give the Contracting Officer written notice as soon as practicable after the occurrence of a loss or damage for which the Government has assumed the risk. (1) The notice shall contain fu…
  • DFARS 252.227-7003 Termination.
    …hin license, in whole or in part, by giving the Contractor not less than thirty (30) days notice in writing of the date such termination is to be effective; provided, however, that such termination shall not affect the obligation of the Gov…
  • DFARS 252.227-7013 Rights in Technical Data—Other Than Commercial Products and Commercial Services.
    … this clause; the special license rights legend at paragraph (g)(5) of this clause; and a notice of copyright as prescribed under 17 U.S.C. 401 or 402. (1) General marking instructions. The Contractor, or its subcontractors or suppliers, s…
  • DFARS 252.227-7014 Rights in Other Than Commercial Computer Software and Other Than Commercial Computer Software Documentation.
    … this clause; the special license rights legend at paragraph (g)(5) of this clause; and a notice of copyright as prescribed under 17 U.S.C. 401 or 402. (1) General marking instructions. The Contractor, or its subcontractors or suppliers, s…
  • DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).
    …revoking or modifying the license, the agency— (A) Will furnish the Contractor a written notice of its intention to revoke or modify the license; and (B) Will allow the Contractor 30 days (or such other time as the funding agency may auth…
  • FAR 3.705 Procedures.
    …fundamental fairness. As a minimum, however, agencies shall provide the following: (1) A notice of the proposed action to declare void and rescind the contract shall be made in writing and sent by certified mail, return receipt requested. …
  • FAR 5.202 Exceptions.
    The contracting officer need not submit the notice required by 5.201 when— (a) The contracting officer determines that— (1) The synopsis cannot be worded to preclude disclosure of an agency's needs and such disclosure would compromise the…
  • FAR 9.406-3 Procedures.
    …gh appropriate technology; if so, the suspending and debarring official should change the notice in paragraph (c)(3)(iv) of this section to include those flexible procedures. (2) In actions not based upon a conviction or civil judgment, if…
  • FAR 9.407-3 Procedures.
    …ocedures in 9.406-3(b)(1); if so, the suspending and debarring official should change the notice in paragraph (c)(5) of this section to include those flexible procedures. (2) In actions not based on an indictment, if it is found that the c…
  • FAR 15.202 Advisory multi-step process.
    (a) The agency may publish a presolicitation notice (see 5.204) that provides a general description of the scope or purpose of the acquisition and invites potential offerors to submit information that allows the Government to advise the off…
  • FAR 15.503 Notifications to unsuccessful offerors.
    (a) Preaward notices—(1) Preaward notices of exclusion from competitive range. The contracting officer shall notify offerors promptly in writing when their proposals are excluded from the competitive range or otherwise eliminated from the c…
  • FAR 19.502-8 Rejecting Small Business Administration recommendations.
    (a) If the contracting officer rejects a recommendation of the SBA, written notice shall be furnished to the appropriate SBA representative within 5 working days of the contracting officer's receipt of the recommendation. (b) The SBA PCR (…
  • FAR 30.202-7 Determinations.
    …he contracting officer if the proposal triggers submission of a Disclosure Statement. The notice of adequacy shall state that— (A) The disclosed practices are adequately described and the CFAO currently is not aware of any additional pract…
  • FAR 33.211 Contracting officer's decision.
    …within 90 days from the date you receive this decision, mail or otherwise furnish written notice to the agency board of contract appeals and provide a copy to the Contracting Officer from whose decision this appeal is taken. The notice shal…

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.