Sole Source Contracts: When and How They Are Awarded

Sole source contracts represent one of the most consequential exceptions to the competitive bidding requirements that govern federal procurement. Rather than issuing a public solicitation and evaluating competing offers, an agency awards a sole source contract to a single vendor without competition. This page covers the legal basis for sole source awards, the circumstances that justify them, the procedural steps agencies must follow, and the boundaries that distinguish permissible sole source actions from improper contract splitting or other compliance failures.

Definition and scope

A sole source contract is a contract awarded without competition, authorized under specific statutory exceptions to the full and open competition requirement established by the Competition in Contracting Act of 1984 (41 U.S.C. § 3301–3313). The Federal Acquisition Regulation implements these exceptions primarily at FAR Part 6, which governs competition requirements and the procedures for justifying deviations from them.

The threshold at which a written Justification and Approval (J&A) document becomes mandatory depends on contract value:

1. Contracts at or below the simplified acquisition threshold — no formal J&A required, though the contracting officer must still document the basis for limiting competition.
2. Contracts above the simplified acquisition threshold up to $700,000 — a J&A must be approved by the contracting officer (FAR 6.304(a)(1)).
3. Contracts above $700,000 up to $13.5 million — J&A requires approval by the competition advocate (FAR 6.304(a)(2)).
4. Contracts above $13.5 million up to $68 million — approval by the head of the procuring activity is required (FAR 6.304(a)(3)).
5. Contracts above $68 million — the senior procurement executive of the agency must approve (FAR 6.304(a)(4)).

The government-wide contracting landscape includes thousands of sole source awards annually across civilian and defense agencies, making the J&A process a primary accountability mechanism in federal procurement oversight.

How it works

When an agency determines that competitive procedures are not feasible or appropriate, the contracting officer initiates the sole source justification process. The core steps are:

1. Identify the statutory authority. The agency must cite one of the seven exceptions enumerated at FAR 6.302, such as only one responsible source, unusual and compelling urgency, or national security.
2. Prepare a written J&A. The document must describe the supplies or services required, explain why full and open competition cannot be used, identify the anticipated cost, and certify accuracy.
3. Obtain required approvals. Approval authority escalates with dollar value as described above.
4. Post the J&A publicly. For contracts above the simplified acquisition threshold, agencies must post the J&A on SAM.gov within 14 days of contract award (FAR 6.305), subject to national security exceptions.
5. Award and document. The contracting officer awards the contract and retains the complete file, which is subject to audit by the Defense Contract Audit Agency for defense contracts or by agency inspectors general.

The contracting officer — whose role and authority are detailed on the contracting officer roles page — carries personal accountability for the adequacy of the J&A. Inadequate justification is a common finding in Government Accountability Office (GAO) bid protest decisions.

Common scenarios

The seven statutory authorities under FAR 6.302 map to recognizable procurement situations:

• Only one responsible source (FAR 6.302-1): A manufacturer holds a patent or proprietary data rights that no other vendor can legally replicate. This is the most frequently cited authority in defense hardware procurement.
• Unusual and compelling urgency (FAR 6.302-2): A system failure, natural disaster, or mission-critical operational need requires immediate award. The agency must show that delay would cause serious injury to the government.
• Industrial mobilization, experimental work, or expert services (FAR 6.302-3): Applies when the government needs to maintain a facility or producer for national defense, or when the work is experimental and only a specific expert qualifies.
• International agreement (FAR 6.302-4): Treaty obligations or foreign military sales agreements specify the source.
• Authorized or required by statute (FAR 6.302-5): Congress has directed award to a named entity or class of entities, such as certain 8(a) program awards under 15 U.S.C. § 637(a).
• National security (FAR 6.302-6): Disclosure through competition would compromise classified information.
• Public interest (FAR 6.302-7): The agency head determines that competition is not in the public interest and obtains a class deviation approved by the head of the agency.

Small business set-aside programs introduce a related mechanism: the SBA's 8(a) program permits sole source awards to certified 8(a) firms up to $4.5 million for most industries and up to $25 million for manufacturing (SBA, 13 C.F.R. § 124.506), providing a statutory basis distinct from the FAR Part 6 exceptions.

Decision boundaries

The distinction between a legitimate sole source award and an improper procurement action turns on several critical boundaries.

Sole source vs. contract splitting: Artificially dividing a requirement into smaller awards to stay below approval thresholds — known as contract splitting — violates FAR 13.003(c) and can constitute a criminal violation of the Anti-Deficiency Act (31 U.S.C. § 1341).

Sole source vs. directed award: A program manager or agency official who designates a specific vendor without contracting officer concurrence and a valid J&A is engaging in an unauthorized commitment, which can expose the government and the contractor to false claims liability.

Sole source vs. limited competition: FAR Part 6 also permits "other than full and open competition" scenarios that still involve 2 or more offerors — such as set-aside procurements. A true sole source award involves a single offeror and a complete waiver of competitive procedures, while a set-aside restricts competition to a category of firms but does not eliminate competition itself.

A protest challenging a sole source award may be filed with the GAO under 4 C.F.R. Part 21 or with the Court of Federal Claims. The bid protest process page covers standing, timing, and available remedies in detail. Agencies found to have awarded sole source contracts without adequate justification may be ordered to recompete the requirement, and the contracting officer's J&A file becomes the central exhibit in any such proceeding.

Types of government contracts and the government contract bidding process provide broader context for how sole source awards fit within the full spectrum of federal acquisition methods.