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Defense Federal Acquisition Regulation Supplement (DFARS)

The DFARS supplements the FAR with defense-specific acquisition rules. It governs how the Department of Defense procures goods and services, covering everything from cybersecurity requirements and intellectual property rights to Buy American restrictions and major weapon system acquisitions.

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General

System overview, definitions, ethics, and administrative matters including CUI safeguarding

Competition & Planning

Publicizing, competition, planning, sources, market research, and commercial acquisition

Part 205

DFARS 205

Publicizing Contract Actions

Supplements FAR synopsizing requirements with DoD-specific publication policies. Addresses when defense acquisitions must be publicized and exceptions for classified or sensitive procurements.

Part 206

DFARS 206

Competition Requirements

Implements DoD competition policies supplementing the Competition in Contracting Act (CICA). Defines approval levels for sole-source justifications, unusual and compelling urgency determinations, and other-than-full-and-open competition in defense acquisitions.

Part 207

DFARS 207

Acquisition Planning

Establishes DoD acquisition planning requirements including written acquisition strategies for major defense programs. Covers consolidation, bundling restrictions, and requirements for market research before solicitation.

Part 208

DFARS 208

Required Sources of Supplies and Services

Defines DoD priorities for supply sources including Defense Logistics Agency (DLA), AbilityOne, and Federal Prison Industries (UNICOR). Addresses use of Government excess property and inter-service support agreements.

Part 209

DFARS 209

Contractor Qualifications

Covers DoD contractor responsibility determinations, debarment and suspension procedures, and organizational conflicts of interest (OCI) specific to defense contracts. Includes requirements for contractors supporting systems engineering and technical assistance.

Part 210

DFARS 210

Market Research

Supplements FAR market research requirements with DoD-specific considerations. Directs contracting officers to use the Federal Procurement Data System and other defense-unique databases to identify potential sources and commercial solutions.

Part 211

DFARS 211

Describing Agency Needs

Addresses DoD requirements for describing needs including data item descriptions (DIDs), military specifications, and the preference for performance-based specifications. Implements the policy of using commercial standards over military-unique specifications.

Part 212

DFARS 212

Acquisition of Commercial Products and Commercial Services

Implements DoD commercial item acquisition policies including the commercial item determination process, cost data requirements, and tailored compliance for commercial contractors. Critical for companies selling commercial products to the military.

Contracting Methods

Simplified acquisition, sealed bidding, negotiation, contract types, special methods, and emergency acquisitions

Part 213

DFARS 213

Simplified Acquisition Procedures

Covers DoD simplified acquisition procedures for purchases under the Simplified Acquisition Threshold. Includes use of Government-wide commercial purchase cards and procedures for contingency operations with higher thresholds.

Part 214

DFARS 214

Sealed Bidding

Provides DoD supplemental procedures for sealed bidding including Invitations for Bids (IFBs). While sealed bidding is less common in defense procurement than negotiated acquisitions, this part establishes the rules when lowest-price awards are appropriate.

Part 215

DFARS 215

Contracting by Negotiation

The primary contracting method for defense acquisitions. Covers source selection procedures, proposal evaluation factors, best value determinations, and cost or pricing data requirements (Truth in Negotiations Act). Essential for any company competing for negotiated DoD contracts.

Part 216

DFARS 216

Types of Contracts

Defines DoD-specific policies on contract types including fixed-price, cost-reimbursement, incentive, indefinite-delivery, and time-and-materials contracts. Includes unique provisions for undefinitized contract actions (UCAs) and economic price adjustment in defense contracts.

Part 217

DFARS 217

Special Contracting Methods

Covers DoD-specific special contracting methods including multiyear contracting, options, undefinitized contract actions (UCAs), and master agreements. Multiyear procurement is particularly important for defense programs requiring stable funding over several years.

Part 218

DFARS 218

Emergency Acquisitions

Provides DoD-specific flexibilities and streamlined procedures for acquisitions during contingency operations, defense or recovery from certain attacks, humanitarian or peacekeeping operations, and other emergency situations. Raises thresholds and relaxes competition requirements.

Socioeconomic Programs

Small business, labor, environment, privacy, foreign acquisition (Berry Amendment, ITAR)

Part 219

DFARS 219

Small Business Programs

Implements DoD small business policies including set-asides, 8(a), HUBZone, SDVOSB, and WOSB programs specific to defense. Addresses subcontracting plan requirements and the Mentor-Protege program unique to DoD that pairs large defense primes with small businesses.

Part 222

DFARS 222

Application of Labor Laws

Covers DoD-specific labor law requirements including Davis-Bacon Act, Service Contract Act, and contractor personnel deployed in theater. Addresses restrictions on contractor employees in deployed environments and labor standards for overseas defense contracts.

Part 223

DFARS 223

Environment, Energy, and Water Efficiency

Addresses DoD environmental and energy requirements for defense contracts. Covers hazardous material management, ozone-depleting substances, and environmental cleanup responsibilities unique to military operations and installations.

Part 224

DFARS 224

Protection of Privacy and Freedom of Information

Implements DoD-specific requirements for protecting personally identifiable information (PII) and complying with the Privacy Act and Freedom of Information Act in defense contracts. Covers handling of sensitive personal data by contractor personnel.

Part 225

DFARS 225

Foreign Acquisition

One of the most complex DFARS parts. Covers Buy American Act, Berry Amendment (domestic sourcing for textiles, metals, and food), trade agreements, International Traffic in Arms Regulations (ITAR), and foreign military sales (FMS). Critical for any defense contractor with global supply chains.

Part 226

DFARS 226

Other Socioeconomic Programs

Implements DoD-specific socioeconomic programs including Indian incentives, historically underutilized business zones (HUBZone), and policies supporting Historically Black Colleges and Universities (HBCUs) and Minority Institutions (MIs) in defense research.

General Contracting Requirements

IP/data rights, bonds, taxes, CAS, cost principles, financing, disputes

Part 227

DFARS 227

Patents, Data, and Copyrights

Governs intellectual property rights in defense contracts including technical data rights, computer software rights, and patent ownership. Defines the critical categories of data rights: unlimited, government purpose, limited, and restricted. One of the most consequential parts for technology companies contracting with DoD.

Part 228

DFARS 228

Bonds and Insurance

Establishes DoD requirements for performance bonds, payment bonds, and insurance in defense contracts. Includes specific policies on aircraft, vessel, and nuclear hazards insurance unique to military operations.

Part 229

DFARS 229

Taxes

Addresses federal, state, and local tax implications for defense contracts. Covers tax exemptions for government purchases, overseas tax relief agreements, and special tax considerations for contracts performed in foreign countries.

Part 230

DFARS 230

Cost Accounting Standards Administration

Implements Cost Accounting Standards (CAS) requirements for defense contracts. Covers CAS applicability, disclosure statements, and compliance monitoring. Full CAS coverage applies to contracts over $50M with covered contractors, which is common in defense procurement.

Part 231

DFARS 231

Contract Cost Principles

Defines allowable and unallowable costs specific to defense contracts. Includes DoD-unique cost allowability rules for independent research and development (IR&D), bid and proposal (B&P) costs, and compensation limits for contractor employees.

Part 232

DFARS 232

Contract Financing

Covers progress payments, performance-based payments, and other contract financing mechanisms for defense contracts. Includes policies on advance payments, assignment of claims, and electronic submission of payment requests through Wide Area WorkFlow (WAWF).

Part 233

DFARS 233

Protests, Disputes, and Appeals

Addresses protest, dispute, and appeal procedures specific to DoD contracts. Covers the role of the Armed Services Board of Contract Appeals (ASBCA) and agency-level protest procedures for defense procurements.

Special Categories

Major systems, R&D, construction, services, IT/cybersecurity, utilities

Part 234

DFARS 234

Major System Acquisition

Governs acquisition of major defense systems including ACAT I, II, and III programs. Implements earned value management system (EVMS) requirements and establishes policies for oversight of large weapon systems and defense programs exceeding defined dollar thresholds.

Part 235

DFARS 235

Research and Development Contracting

Covers DoD research and development contracting including Broad Agency Announcements (BAAs), Small Business Innovation Research (SBIR), and policies for managing R&D contracts. Addresses the full spectrum from basic research (6.1) through system development (6.5).

Part 236

DFARS 236

Construction and Architect-Engineer Contracts

Implements DoD-specific construction and A-E contracting policies. Covers military construction (MILCON) projects, design-build procedures, and contractor qualifications unique to defense facility construction including secure and classified facilities.

Part 237

DFARS 237

Service Contracting

Addresses DoD service contracting including advisory and assistance services, management support services, and restrictions on personal services contracts. Includes requirements for contractor personnel supporting military operations and workforce mix considerations.

Part 239

DFARS 239

Acquisition of Information Technology

Covers DoD IT acquisition including cybersecurity requirements, cloud computing, and telecommunications. Implements the DoD Cloud Computing Security Requirements Guide (SRG) and policies on foreign-source IT restrictions critical to defense information systems.

Part 241

DFARS 241

Acquisition of Utility Services

Addresses procurement of utility services (electricity, natural gas, water, sewage) for DoD installations. Covers areawide contracts, privatization of utility systems, and energy conservation requirements specific to military bases and facilities.

Contract Management

DCMA/DCAA administration, modifications, subcontracting, property, quality, termination

Part 242

DFARS 242

Contract Administration and Audit Services

Covers the role of the Defense Contract Management Agency (DCMA) and Defense Contract Audit Agency (DCAA) in administering and auditing defense contracts. Addresses contractor business system reviews, novation agreements, and earned value management oversight.

Part 243

DFARS 243

Contract Modifications

Establishes DoD policies for bilateral and unilateral contract modifications, change orders, and equitable adjustments. Covers engineering change proposals (ECPs) and the value engineering change proposal (VECP) process in defense contracts.

Part 244

DFARS 244

Subcontracting Policies and Procedures

Governs DoD subcontracting policies including consent to subcontract, contractor purchasing system reviews (CPSR), and flowdown of defense-unique requirements. Addresses the complex supply chain management challenges in major defense programs.

Part 245

DFARS 245

Government Property

Covers the management and accountability of Government-Furnished Property (GFP) and Government-Furnished Equipment (GFE) in defense contracts. Includes requirements for property control systems, inventory management, and disposition of government property held by contractors.

Part 246

DFARS 246

Quality Assurance

Implements DoD quality assurance requirements including Government source inspection, first article testing, and higher-level contract quality requirements. Addresses AS9100 and other quality standards specific to defense and aerospace manufacturing.

Part 247

DFARS 247

Transportation

Covers DoD transportation requirements including military shipping, hazardous materials transportation, and the use of the Defense Transportation System (DTS). Addresses unique defense logistics challenges including overseas shipment and security requirements.

Part 249

DFARS 249

Termination of Contracts

Covers termination for convenience (T4C) and termination for default (T4D) specific to defense contracts. Addresses settlement procedures, partial terminations, and the unique complexities of terminating large weapons system contracts.

Part 250

DFARS 250

Extraordinary Contractual Actions and the Safety Act

Authorizes extraordinary contractual relief for defense contractors including amendments without consideration, indemnification, and actions to facilitate the national defense. Implements the SAFETY Act for anti-terrorism technologies.

Part 251

DFARS 251

Use of Government Sources by Contractors

Governs when and how defense contractors may use government supply sources, including the Defense Logistics Agency supply system and government testing facilities. Addresses authorization procedures and accounting requirements for contractor use of government resources.

Clauses & Forms

Defense-unique solicitation provisions, contract clauses, and DD forms

What is the DFARS?

The Defense Federal Acquisition Regulation Supplement (DFARS) is the Department of Defense's supplement to the Federal Acquisition Regulation (FAR). Codified at Title 48, Chapter 2 of the Code of Federal Regulations, the DFARS implements and supplements the FAR with policies and procedures specific to defense procurement.

DFARS parts mirror the FAR numbering system with a 2XX prefix (e.g., DFARS Part 215 supplements FAR Part 15 on Contracting by Negotiation). Understanding both the FAR and DFARS is essential for any business pursuing Department of Defense contracts, as DFARS imposes additional requirements on cybersecurity (CMMC), intellectual property rights, domestic sourcing (Berry Amendment), and major system acquisitions.

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