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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166 sections with “effective date of the contract”: the first 40
- FAR 52.227-11 Patent Rights—Ownership by the Contractor.… the Secretary's review discloses that the Contractor could take reasonable steps to more effectively implement the requirements of paragraph (i)(4) of this clause. (j) Communications. [Complete according to agency instructions.] (k) Subc…
- 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…
- 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…
- DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).…hts in this invention.” (5) The Contractor shall— (i) Establish and maintain active and effective procedures to ensure that subject inventions are promptly identified and disclosed to Contractor personnel responsible for patent matters; …
- 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 52.203-13 Contractor Code of Business Ethics and Conduct.…siness ethics awareness and compliance program and internal control system, by conducting effective training programs and otherwise disseminating information appropriate to an individual's respective roles and responsibilities. (ii) The tr…
- 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 22.404-6 Modifications of wage determinations.…chever occurs first. (Note the distinction between receipt by the agency (modification is effective) and receipt by the contracting officer, which may occur later.) During the course of the solicitation, the contracting officer shall monito…
- 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 42.1204 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 52.241-7 Change in Rates or Terms and Conditions of Service for Regulated Services.… shall forward to the Contracting Officer a copy of such changes within 15 days after the effective date thereof. The Contractor agrees to continue furnishing service under this contract in accordance with the amended tariff, and the Govern…
- 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 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…
- DFARS 252.237-7023 Continuation of Essential Contractor Services.…tary sales customers under the Security Assistance Program. Services are essential if the effectiveness of defense systems or operations has the potential to be seriously impaired by the interruption of these services, as determined by the …
- DFARS 252.247-7002 Revision of prices.…ter the date of this contract, and thereafter neither party shall make a demand having an effective date within 90 days of the effective date of any prior demand. However, this limitation does not apply to a wage adjustment during the 90 da…
- FAR 22.404-1 Types of wage determinations.… of Labor. Once incorporated in a contract, a general wage determination normally remains effective for the life of the contract, unless the contracting officer exercises an option to extend the term of the contract (see 22.404-12). These d…
- 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 49.604 Release of excess funds under terminated contracts.…minated Contract No. ____ with ____ [Contractor] Refs: (a) [Cite termination notice and effective date.] (b) [Cite prior letters releasing excess funds, if any.] 1. Referenced termination notice, ______ [insert “completely” or “partiall…
- FAR 52.222-41 Service Contract Labor Standards.…sued solely as a result of a finding of substantial variance, such determination shall be effective as of the date of the final administrative decision. (g) Notification to Employees. The Contractor and any subcontractor under this contrac…
- FAR 52.227-13 Patent Rights—Ownership by the Government.…ion, disclosures, and reports. (1) The Contractor shall establish and maintain active and effective procedures to educate its employees in order to assure that subject inventions are promptly identified and disclosed to Contractor personnel…
- 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 52.249-4 Termination for Convenience of the Government (Services) (Short Form).…or payment under the payment provisions of this contract for services rendered before the effective date of termination. (End of clause)
- DFARS 215.403-5 Instructions for submission of certified cost or pricing data and data other than certified cost or pricing data.…t that the proposal be submitted to the Government at least 90 days prior to the proposed effective date of the rates. To ensure the proposal is complete, the contracting officer shall request that the contractor complete the Contractor For…
- 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 31.205-32 Precontract costs.Precontract costs means costs incurred before the effective date of the contract directly pursuant to the negotiation and in anticipation of the contract award when such incurrence is necessary to comply with the proposed contract delivery …
- FAR 52.232-27 Prompt Payment for Construction Contracts.…ntract settlement actions (e.g., release of claims), acceptance is deemed to occur on the effective date of the contract settlement. (B) If the designated billing office fails to annotate the invoice with the date of actual receipt at the …
- DFARS 204.1671 Order of application for modifications.…ill be applied in the following order— (1) Modifications will be applied in order of the effective date on the modification; (2) In the event of two or more modifications with the same effective date, modifications will be applied in sign…
- 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 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 22.1008-2 Successorship with incumbent contractor collective bargaining agreement.…to a collective bargaining agreement for the first time and the agreement does not become effective until after the expiration of the incumbent's contract. (2) If the incumbent contractor enters into a new or revised collective bargaining …
- FAR 43.101 Definitions.…e rights of the parties (e.g., a change in the paying office or the appropriation data). Effective date means— (1) For a solicitation amendment, change order, or administrative change, the effective date shall be the issue date of the ame…
- 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 52.212-3 Offeror Representations and Certifications—Commercial Products and Commercial Services.…ess (SDVOSB) concern eligible under the SDVOSB Program means an SDVOSB concern that— (1) Effective January 1, 2024, is designated in the System for Award Management (SAM) as certified by the Small Business Administration (SBA) in accordanc…
- FAR 52.216-2 Economic Price Adjustment—Standard Supplies.…ctor. (b) The Contractor shall promptly notify the Contracting Officer of the amount and effective date of each decrease in any applicable established price. Each corresponding contract unit price shall be decreased by the same percentage …
- FAR 52.216-3 Economic Price Adjustment—Semistandard Supplies.…tice. (b) The Contractor shall promptly notify the Contracting Officer of the amount and effective date of each decrease in any applicable established price. Each corresponding contract unit price (exclusive of any part of the unit price t…
- FAR 52.216-4 Economic Price Adjustment—Labor and Material.…e, in the form required by the Contracting Officer, supporting data explaining the cause, effective date, and amount of the increase or decrease and the amount of the Contractor's adjustment proposal. (b) Promptly after the Contracting Off…
- FAR 52.222-44 Fair Labor Standards Act and Service Contract Labor Standards—Price Adjustment.…he Contracting Officer of any increase claimed under this clause within 30 days after the effective date of the wage change, unless this period is extended by the Contracting Officer in writing. The Contractor shall promptly notify the Cont…
- FAR 52.222-55 Minimum Wages for Contractor Workers Under Executive Order 14026.…ll publish annual determinations in the Federal Register no later than 90 days before the effective date of the new E.O. minimum wage rate. The Administrator will also publish the applicable E.O. minimum wage on https://www.sam.gov (or any …
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.