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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79 sections with “written acceptance”: the first 40
- FAR 2.101 Definitions.…ing the original contractual rights and obligations of the parties. Change order means a written order, signed by the contracting officer, directing the contractor to make a change that the Changes clause authorizes the contracting officer…
- FAR 13.302-3 Obtaining contractor acceptance and modifying purchase orders.…rties before the contractor undertakes performance, the contracting officer shall require written (see 2.101) acceptance of the purchase order by the contractor. (b) Each purchase order modification shall identify the order it modifies and…
- DFARS 213.302-3 Obtaining contractor acceptance and modifying purchase orders.(1) Require written acceptance of purchase orders for classified acquisitions. (2) See PGI 213.302-3 for guidance on the use of unilateral modifications. (3) A supplemental agreement converts a unilateral purchase order to a bilateral agr…
- FAR 33.104 Protests to GAO.… a complete copy of the protest within 1 day. (2) Immediately after receipt of the GAO's written notice that a protest has been filed, the agency shall give notice of the protest to the contractor if the award has been made, or, if no awar…
- FAR 52.211-8 Time of Delivery.…tion is directed to the Contract Award provision of the solicitation that provides that a written award or acceptance of offer mailed, or otherwise furnished to the successful offeror, results in a binding contract. The Government will mail…
- FAR 52.211-9 Desired and Required Time of Delivery.…tion is directed to the Contract Award provision of the solicitation that provides that a written award or acceptance of offer mailed or otherwise furnished to the successful offeror results in a binding contract. The Government will mail o…
- FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.…t. (c) Changes. Changes in the terms and conditions of this contract may be made only by written agreement of the parties. (d) Disputes. This contract is subject to 41 U.S.C. chapter 71, Contract Disputes. Failure of the parties to this c…
- FAR 52.222-27 Affirmative Action Compliance Requirements for Construction.…blish and maintain a current list of sources for minority and female recruitment. Provide written notification to minority and female recruitment sources and community organizations when the Contractor or its unions have employment opportun…
- FAR 52.227-11 Patent Rights—Ownership by the Contractor.…s legally obligated to do so at contract award. The license is transferable only with the written approval of the agency, except when transferred to the successor of that part of the Contractor's business to which the invention pertains. (…
- FAR 52.227-14 Rights in Data—General.…ical or professional journals, symposia proceedings, or similar works. The prior, express written permission of the Contracting Officer is required to assert copyright in all other data first produced in the performance of this contract. (…
- FAR 52.228-14 Irrevocable Letter of Credit.…dit (NOV 2014) (a) “Irrevocable letter of credit” (ILC), as used in this clause, means a written commitment by a federally insured financial institution to pay all or part of a stated amount of money, until the expiration date of the lette…
- FAR 52.232-12 Advance Payments.… require. (k) Default. (1) If any of the following events occurs, the Government may, by written notice to the Contractor, withhold further withdrawals from the special account and further payments on this contract: (i) Termination of thi…
- FAR 52.232-27 Prompt Payment for Construction Contracts.…within 10 days after the date the invoice amount is paid; and (C) The Contractor makes a written demand to the designated payment office for additional penalty payment, in accordance with paragraph (a)(6)(ii) of this clause, postmarked not…
- FAR 52.243-1 Changes—Fixed-Price.…cedures. Changes—Fixed-Price (AUG 1987) (a) The Contracting Officer may at any time, by written order, and without notice to the sureties, if any, make changes within the general scope of this contract in any one or more of the following:…
- FAR 52.243-2 Changes—Cost-Reimbursement.…. Changes—Cost-Reimbursement (AUG 1987) (a) The Contracting Officer may at any time, by written order, and without notice to the sureties, if any, make changes within the general scope of this contract in any one or more of the following:…
- FAR 52.245-1 Government Property.…dates stated in the contract, the Contracting Officer shall, upon the Contractor's timely written request, consider an equitable adjustment to the contract. (ii) In the event property is received by the Contractor, or for Government-furnis…
- 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.…r (4) Computer software documentation required to be delivered under a contract has been written, in any medium, in sufficient detail to comply with requirements under that contract. Developed exclusively at private expense means developm…
- DFARS 252.227-7037 Validation of Asserted Restrictions on Technical Data.…the Contractor or subcontractor shall be prepared to furnish to the Contracting Officer a written justification for such asserted restrictions in response to a challenge under paragraph (e) of this clause. (d) Prechallenge request for info…
- DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).… Before 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 …
- DFARS 252.246-7001 Warranty of data.…1) Within a reasonable time after such notification, the Contracting Officer may— (i) By written notice, direct the Contractor to correct or replace at the Contractor's expense the nonconforming technical data promptly; or (ii) If the Con…
- FAR 3.104-6 Ethics advisory opinions regarding prohibitions on a former official's acceptance of compensation from a contractor.… is fraudulent, misleading, or otherwise incorrect. (3) If the requester is advised in a written opinion by the agency ethics official that the requester may accept compensation from a particular contractor, and accepts such compensation i…
- FAR 14.407-3 Other mistakes disclosed before award.…f the bidder alleges a mistake, the contracting officer shall advise the bidder to make a written request to withdraw or modify the bid. The request must be supported by statements (sworn statements, if possible) and shall include all perti…
- FAR 52.227-13 Patent Rights—Ownership by the Government.…s legally obligated to do so at contract award. The license is transferable only with the written approval of the agency except when transferred to the successor of that part of the Contractor's business to which the subject invention perta…
- FAR 52.246-19 Warranty of Systems and Equipment under Performance Specifications or Design Criteria.…n, if any, shall be undertaken. (4) The Contractor shall promptly comply with any timely written direction from the Contracting Officer to correct or partially correct a defect, at no increase in the contract price. (5) The Contractor sha…
- DFARS 252.227-7014 Rights in Other Than Commercial Computer Software and Other Than Commercial Computer Software Documentation.…r (3) Computer software documentation required to be delivered under a contract has been written, in any medium, in sufficient detail to comply with requirements under that contract. Developed exclusively at private expense means developm…
- FAR 6.302-4 International agreement.… between the United States and a foreign government or international organization, or the written directions of a foreign government reimbursing the agency for the cost of the acquisition of the supplies or services for such government. (b…
- FAR 7.105 Contents of written acquisition plans.In order to facilitate attainment of the acquisition objectives, the plan must identify those milestones at which decisions should be made (see paragraph (b)(21) of this section). The plan must address all the technical, business, managemen…
- FAR 13.302-4 Termination or cancellation of purchase orders.…contractor in writing that the purchase order has been canceled, request the contractor's written acceptance of the cancellation, and proceed as follows: (1) If the contractor accepts the cancellation and does not claim that costs were inc…
- FAR 28.204-3 Irrevocable letter of credit.…bond. (b) The ILC shall be irrevocable, require presentation of no document other than a written demand and the ILC (and letter of confirmation, if any), expire only as provided in paragraph (f) of this subsection, and be issued/confirmed …
- FAR 52.215-1 Instructions to Offerors—Competitive Acquisition.…ion, result in the offeror being allowed to revise its proposal. In writing, writing, or written means any worded or numbered expression that can be read, reproduced, and later communicated, and includes electronically transmitted and stor…
- FAR 52.246-17 Warranty of Supplies of a Noncomplex Nature.…ntract. (c) Remedies available to the Government. (1) The Contracting Officer shall give written notice to the Contractor of any breach of warranties in paragraph (b)(1) of this clause within ____ [Contracting Officer shall insert specific…
- FAR 52.247-58 Loading, Blocking, and Bracing of Freight Car Shipments.…ocked, and braced in accordance with standards established by the shipper as evidenced by written acceptance of an authorized representative of the carrier. (c) The Contractor shall be liable for payment of any damage to any supplies cause…
- DFARS 213.7002 Purchase orders.The contracting officer need not obtain a contractor's written acceptance of a purchase order or modification of a purchase order for an acquisition under the 8(a) Program pursuant to 219.804-2(2).
- DFARS 228.370-2 General.…r destroyed after it has become a covered aircraft, the contracting officer shall provide written direction to the contractor to take action in accordance with the contracting officer's written direction that the aircraft shall be— (i) Rep…
- DFARS 252.227-7013 Rights in Technical Data—Other Than Commercial Products and Commercial Services.…cal data, in whole or in part, within the Government. The Government may not, without the written permission of the party asserting limited rights, release or disclose the technical data outside the Government, use the technical data for ma…
- DFARS 252.235-7004 Protection of Human Subjects.…(JUL 2009) (a) Definitions. As used in this clause— (1) Assurance of compliance means a written assurance that an institution will comply with requirements of 32 CFR Part 219, as well as the terms of the assurance, which the Human Researc…
- DFARS 252.239-7004 Orders for Facilities and Services.…upplies and facilities by— (1) Commencing performance after receipt of an order; or (2) Written acceptance by a duly authorized representative. (c) The Contractor shall furnish the services and facilities under this agreement/contract in…
- DFARS 252.246-7007 Contractor Counterfeit Electronic Part Detection and Avoidance System.…r means an organization that fabricates a part under a contract with, or with the express written authority of, the original component manufacturer based on the original component manufacturer's designs, formulas, and/or specifications. Au…
- FAR 12.603 Streamlined solicitation for commercial products or commercial services.(a) When a written solicitation will be issued, the contracting officer may use the following procedure to reduce the time required to solicit and award contracts for the acquisition of commercial products or commercial services. This proce…
- FAR 15.504 Award to successful offeror.…nformation that is different than the latest signed proposal, as amended by the offeror's written correspondence, both the offeror and the contracting officer shall sign the contract award. (b) When an award is made to an offeror for less …
FAR (chapter 1)
- Part 1 Federal Acquisition Regulations System 58 sections
- Part 2 Definitions of Words and Terms 3 sections
- Part 3 Improper Business Practices and Personal Conflicts of Interest 98 sections
- Part 4 Administrative and Information Matters 116 sections
- Part 5 Publicizing Contract Actions 34 sections
- Part 6 Competition Requirements 34 sections
- Part 7 Acquisition Planning 34 sections
- Part 8 Required Sources of Supplies and Services 67 sections
- Part 9 Contractor Qualifications 106 sections
- Part 10 Market Research 4 sections
- Part 11 Describing Agency Needs 33 sections
- Part 12 Acquisition of Commercial Products and Commercial Services 38 sections
- Part 13 Simplified Acquisition Procedures 49 sections
- Part 14 Sealed Bidding 82 sections
- Part 15 Contracting by Negotiation 81 sections
- Part 16 Types of Contracts 74 sections
- Part 17 Special Contracting Methods 50 sections
- Part 18 Emergency Acquisitions 34 sections
- Part 19 Small Business Programs 126 sections
- Part 22 Application of Labor Laws to Government Acquisitions 205 sections
- Part 23 Environment, Sustainable Acquisition, and Material Safety 38 sections
- Part 24 Protection of Privacy and Freedom of Information 10 sections
- Part 25 Foreign Acquisition 81 sections
- Part 26 Other Socioeconomic Programs 36 sections
- Part 27 Patents, Data, and Copyrights 59 sections
- Part 28 Bonds and Insurance 61 sections
- Part 29 Taxes 23 sections
- Part 30 Cost Accounting Standards Administration 30 sections
- Part 31 Contract Cost Principles and Procedures 87 sections
- Part 32 Contract Financing 175 sections
- Part 33 Protests, Disputes, and Appeals 23 sections
- Part 34 Major System Acquisition 20 sections
- Part 35 Research and Development Contracting 25 sections
- Part 36 Construction and Architect-engineer Contracts 81 sections
- Part 37 Service Contracting 46 sections
- Part 38 Federal Supply Schedule Contracting 3 sections
- Part 39 Acquisition of Information Technology 14 sections
- Part 40 Information Security and Supply Chain Security 12 sections
- Part 41 Acquisition of Utility Services 17 sections
- Part 42 Contract Administration and Audit Services 84 sections
- Part 43 Contract Modifications 14 sections
- Part 44 Subcontracting Policies and Procedures 24 sections
- Part 45 Government Property 33 sections
- Part 46 Quality Assurance 60 sections
- Part 47 Transportation 106 sections
- Part 48 Value Engineering 13 sections
- Part 49 Termination of Contracts 108 sections
- Part 50 Extraordinary Contractual Actions and the Safety Act 34 sections
- Part 51 Use of Government Sources by Contractors 15 sections
- Part 52 Solicitation Provisions and Contract Clauses 680 sections
- Part 53 Forms 61 sections
DFARS (chapter 2, Defense)
- Part 201 Federal Acquisition Regulations System 24 sections
- Part 202 Definitions of Words and Terms 1 sections
- Part 203 Improper Business Practices and Personal Conflicts of Interest 28 sections
- Part 204 Administrative and Information Matters 76 sections
- Part 205 Publicizing Contract Actions 11 sections
- Part 206 Competition Requirements 20 sections
- Part 207 Acquisition Planning 22 sections
- Part 208 Required Sources of Supplies and Services 31 sections
- Part 209 Contractor Qualifications 55 sections
- Part 210 Market Research 2 sections
- Part 211 Describing Agency Needs 22 sections
- Part 212 Acquisition of Commercial Products and Commercial Services 24 sections
- Part 213 Simplified Acquisition Procedures 23 sections
- Part 214 Sealed Bidding 14 sections
- Part 215 Contracting by Negotiation 66 sections
- Part 216 Types of Contracts 36 sections
- Part 217 Special Contracting Methods 64 sections
- Part 218 Emergency Acquisitions 7 sections
- Part 219 Small Business Programs 47 sections
- Part 222 Application of Labor Laws to Government Acquisitions 56 sections
- Part 223 Environment, Sustainable Acquisition, and Material Safety 34 sections
- Part 224 Protection of Privacy and Freedom of Information 2 sections
- Part 225 Foreign Acquisition 251 sections
- Part 226 Other Socioeconomic Programs 14 sections
- Part 227 Patents, Data, and Copyrights 99 sections
- Part 228 Bonds and Insurance 17 sections
- Part 229 Taxes 9 sections
- Part 230 Cost Accounting Standards Administration 2 sections
- Part 231 Contract Cost Principles and Procedures 13 sections
- Part 232 Contract Financing 74 sections
- Part 233 Protests, Disputes, and Appeals 8 sections
- Part 234 Major System Acquisition 13 sections
- Part 235 Research and Development Contracting 16 sections
- Part 236 Construction and Architect-engineer Contracts 25 sections
- Part 237 Service Contracting 67 sections
- Part 239 Acquisition of Information Technology 38 sections
- Part 241 Acquisition of Utility Services 8 sections
- Part 242 Contract Administration and Audit Services 40 sections
- Part 243 Contract Modifications 18 sections
- Part 244 Subcontracting Policies and Procedures 13 sections
- Part 245 Government Property 23 sections
- Part 246 Quality Assurance 39 sections
- Part 247 Transportation 27 sections
- Part 249 Termination of Contracts 14 sections
- Part 250 Extraordinary Contractual Actions and the Safety Act 16 sections
- Part 251 Use of Government Sources by Contractors 5 sections
- Part 252 Solicitation Provisions and Contract Clauses 405 sections
- Part 253 Forms 10 sections
- Part 270 Defense Contracting Programs 7 sections
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.