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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20 sections with “reasonable assurance”
- FAR 2.101 Definitions.…d through a comprehensive plan for fulfilling the agency need in a timely manner and at a reasonable cost. It includes developing the overall strategy for managing the acquisition. Activity Address Code (AAC) means a distinct six-position …
- FAR 16.403-2 Fixed-price incentive (successive targets) contracts.…ient information is available to permit negotiation of initial targets; and (3) There is reasonable assurance that additional reliable information will be available at an early point in the contract performance so as to permit negotiation …
- FAR 16.601 Time-and-materials contracts.…to estimate accurately the extent or duration of the work or to anticipate costs with any reasonable degree of confidence. See 12.207(b) for the use of time-and-material contracts for certain commercial services. (1) Government surveillanc…
- FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.…supplies or services. The Government must exercise its postacceptance rights (1) within a reasonable time after the defect was discovered or should have been discovered; and (2) before any substantial change occurs in the condition of the i…
- FAR 52.246-2 Inspection of Supplies—Fixed-Price.…rnish, and shall require subcontractors to furnish, at no increase in contract price, all reasonable facilities and assistance for the safe and convenient performance of these duties. Except as otherwise provided in the contract, the Govern…
- DFARS 252.242-7006 Accounting System Administration.… system that complies with the system criteria in paragraph (c) of this clause to provide reasonable assurance that— (1) Applicable laws and regulations are complied with; (2) The accounting system and cost data are reliable; (3) Risk of…
- FAR 52.213-4 Terms and Conditions—Simplified Acquisitions (Other Than Commercial Products and Commercial Services).… in contract price. The Government must exercise its postacceptance rights— (1) Within a reasonable period of time after the defect was discovered or should have been discovered; and (2) Before any substantial change occurs in the conditi…
- FAR 16.205-3 Limitations.…e made to conform with operation of the contractor's accounting system; and (d) There is reasonable assurance that price redetermination actions will take place promptly at the specified times.
- FAR 16.206-3 Limitations.…) The contractor's accounting system is adequate for price redetermination; (c) There is reasonable assurance that the price redetermination will take place promptly at the specified time; and (d) The head of the contracting activity (or …
- FAR 16.207-3 Limitations.… (b) The required level of effort is identified and agreed upon in advance; (c) There is reasonable assurance that the intended result cannot be achieved by expending less than the stipulated effort; and (d) The contract price is the simp…
- FAR 16.301-3 Limitations.…opriate Government surveillance during performance in accordance with 1.602-2, to provide reasonable assurance that efficient methods and effective cost controls are used. (b) The use of cost-reimbursement contracts is prohibited for the a…
- FAR 19.705-7 Compliance with the subcontracting plan.…owned small business concerns, factors such as unavailability of anticipated sources or unreasonable prices may frustrate achievement of the contractor's subcontracting goals. The contracting officer may consider any of the following, thoug…
- FAR 31.205-47 Costs related to legal and other proceedings.…by a third party under the False Claims Act in which the United States did not intervene, reasonable costs incurred by the contractor or subcontractor in connection with such a proceeding that are not otherwise unallowable by regulation or …
- DFARS 209.104-1 General standards.…the prospective contractor's accounting system and related internal controls must provide reasonable assurance that— (i) Applicable laws and regulations are complied with; (ii) The accounting system and cost data are reliable; (iii) Risk…
- DFARS 242.7501 Definitions.…paragraph (c) of the clause at 252.242-7006, Accounting System Administration, to provide reasonable assurance that— (1) Applicable laws and regulations are complied with; (2) The accounting system and cost data are reliable; (3) Risk of…
- FAR 4.803 Contents of contract files.…17) Data and information related to the contracting officer's determination of a fair and reasonable price. This may include— (i) Certified cost or pricing data; (ii) Data other than certified cost or pricing data; (iii) Justification fo…
- FAR 31.205-4 Bonding costs.…such bonding is in accordance with sound business practice and the rates and premiums are reasonable under the circumstances.
- FAR 35.002 General.…lved in the program and must provide an environment in which the work can be pursued with reasonable flexibility and minimum administrative burden.
- FAR 46.101 Definitions.…h credible evidence (including but not limited to, visual inspection or testing) provides reasonable doubt that the item is authentic. Testing means that element of inspection that determines the properties or elements, including functiona…
- FAR 52.219-9 Small Business Subcontracting Plan.…sadvantaged business, and women-owned small business subcontractors are excessively long, reasonable effort shall be made to give all such small business concerns an opportunity to compete over a period of time. (2) Provide adequate and ti…
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.