Limited Source Procurements Under the FAR: Authorities, Exceptions, and Practical Considerations

The Competition in Contracting Act (“CICA”) establishes a strong preference for full and open competition that is implemented through the Federal Acquisition Regulation (“FAR”). This emphasis reflects Congress’s intent that agencies obtain the best value for the government while promoting fairness, transparency, and efficiency in the acquisition process. However, the FAR recognizes that competition is not always practicable. In certain defined circumstances, agencies may rely on limited source (or “other than full and open competition”) procedures to meet mission needs.

Understanding when and how agencies may depart from full and open competition, and how those decisions are reviewed, is critical for contractors assessing both procurement strategy and potential protest grounds.

The General Rule: Full and Open Competition

FAR Part 6 governs competition requirements for federal procurements. As a baseline, contracting officers must promote and provide for full and open competition in soliciting offers and awarding government contracts. “Full and open competition” generally means that all responsible sources are permitted to compete, subject to limited procedural constraints. Agencies typically achieve this through public notice, competitive solicitations, and evaluation processes designed to treat offerors fairly and consistently.

Exceptions: “Other Than Full and Open Competition”

FAR 6.302 contains seven statutory exceptions under which an agency may justify limiting competition. These exceptions are construed narrowly and must be supported by adequate documentation.

1. Only One Responsible Source (FAR 6.302-1)

This exception applies where the supplies or services required by the agency are available from only one responsible source, or, for DoD, NASA, and the Coast Guard, from only one or a limited number of responsible sources, and no other type of supplies or services will satisfy agency requirements. Only one responsible source exists when:

• A single source submits an unsolicited proposal that presents a unique and innovative concept or capability, offers something not otherwise available to the Government, and is not duplicative of an existing or pending competitive procurement;
• The original contractor may be the only viable source for continued development or production of major systems or highly specialized equipment if switching vendors would cause substantial, unrecoverable duplication of costs or unacceptable delays; or
• For highly specialized services at DoD, NASA, and the Coast Guard, the incumbent may be the only source if changing providers would result in significant cost duplication or mission-impacting delays.

2. Unusual and Compelling Urgency (FAR 6.302-2)

Unusual and compelling urgency is one of the most frequently invoked – and most frequently challenged – exceptions, particularly in bridge contracts and contingency procurements. This exception permits limiting competition when an agency’s need for the supplies or services is of such an unusual and compelling urgency that the Government would be seriously injured unless the agency is permitted to limit the number of sources from which it solicits bids or proposals.

Use of this exception is appropriate where:

• An unusual and compelling urgency precludes full and open competition; and
• Delay in award of a contract would result in serious injury, financial or otherwise, to the Government.

An agency still must request offers from as many potential sources as is practicable under the circumstances. Additionally, the period of performance may not exceed the time needed to meet the unusual and compelling requirements of the work to be performed and for the agency to enter into a new contract for the required procurement through the use of competitive procedures.

3. Industrial Mobilization; Engineering, Developmental, or Research Capability, or Expert Services (FAR 6.302-3)

This provision allows agencies to limit competition to support national security, industrial readiness, and critical capabilities in three core situations:

• Industrial Mobilization / Emergency Readiness: To keep essential suppliers, facilities, and production capabilities available for national emergencies.
• Critical R&D Capability: To preserve or develop key engineering, research, or development capabilities, particularly at nonprofits or FFRDCs.
• Litigation Support: To obtain expert or neutral services for disputes or litigation.

In practice, this exception focuses on limiting competition where necessary to preserve critical capabilities, sustain the industrial base, and ensure readiness, rather than for efficiency or preference.

4. International Agreements (FAR 6.302-4)

An agency does not have to use full and open competition if an international agreement, treaty, or foreign government requirement dictates how the procurement must be conducted. This exception applies in two main situations:

• If the U.S. has agreed (by treaty or formal agreement) to buy from certain sources or follow specific procurement rules, the agency must follow those terms—even if that limits competition.
• If a foreign government is paying for the procurement (e.g., Foreign Military Sales), and it directs who the contractor should be, the U.S. agency can follow those instructions instead of competing the requirement.

5. Authorized or Required by Statute (FAR 6.302-5)

This exception applies when law or resale requirements dictate the source, not agency preference. Certain mandatory sources include:

• Federal Prison Industries (“UNICOR”)
• The AbilityOne Program (nonprofits for the blind or severely disabled)
• Government Printing and Binding (“GPO”)

Small business programs permitting sole-source awards include:

• 8(a) Program
• Historically Underutilized Business Zone (“HUBZone”) Program
• Service-Disabled Veteran-Owned Small Business (“SDVOSB”) Program
• Women-Owned Small Business (“WOSB”) Program

Unlike other exceptions, this category often reflects policy-driven limitations rather than operational necessity.

6. National Security (FAR 6.302-6)

Competition may be limited when disclosing the agency’s requirements would compromise national security. This applies where revealing the need itself would violate security requirements. However, it cannot be used simply because the procurement is classified or contractors will require access to classified information to compete or perform the contract.

7. Public Interest (FAR 6.302-7)

Competition may be limited when the agency head determines that full and open competition is not in the public interest, and no other FAR 6.302 exception applies. Use of this exception is subject to significant procedural requirements, including:

• A non-delegable, written determination by the agency head; and
• Congressional notification at least 30 days before award.

The agency may require further supporting justification, and this exception cannot be used broadly.

Notice Requirements and Exceptions

Even where competition is limited, agencies are generally required to provide public notice of their intent to award a contract on SAM.gov. While public notice is the default, it can be bypassed where disclosure would cause harm, competition is already constrained by law or circumstance, or notice is impractical or unnecessary. For example:

• Under FAR 5.202(a)(1), agencies may forgo pre-award notice where publishing a synopsis would disclose the agency’s needs and compromise national security.
• Under FAR 5.202(a)(2), agencies may forgo pre-award notice where the procurement is conducted under the unusual and compelling urgency exception and delay would harm the Government.
• Under FAR 5.202(a)(4), agencies may forgo pre-award notice where a statute requires the acquisition to be made through another agency or from a specified source (e.g., 8(a) or AbilityOne procurements).
• Under FAR 5.202(a)(6), agencies may forgo pre-award notice for orders placed under multiple-award contracts governed by FAR Subpart 16.5.

Procedural Safeguards: Justification and Approval (J&A)

When invoking any FAR 6.302 exception, agencies must prepare a Justification and Approval (“J&A”). At a minimum, a valid J&A must include:

• Basic procurement details (agency, contracting activity, description of the action, supplies/services, and estimated value);
• The statutory authority being used;
• A demonstration that the contractor’s unique qualifications or the nature of the acquisition requires use of the authority;
• Evidence the agency sought as many sources as practicable;
• A determination that the price is fair and reasonable;
• Market research (or explanation if none was conducted);
• Supporting facts (e.g., urgency, duplication of cost, lack of technical data);
• Identification of any interested sources;
• Steps to increase competition in the future;
• Certifications from the contracting officer and supporting personnel confirming accuracy.

For large sole-source 8(a) awards exceeding $30M, similar (but streamlined) requirements apply, focusing on agency need, statutory authority, best interest, and price reasonableness. Further, the J&A must be approved at the appropriate level, depending on contract value. 

Tension in the Process

Despite the safeguards, there is a practical tension in this framework. While contractors are expected to challenge restrictive procurement approaches before award, the agency’s full justification for limiting competition (which is contained in the J&A) is often not publicly available until after the award is made. This dynamic can constrain a contractor’s ability to meaningfully assess or challenge the agency’s rationale pre-award and often shifts the focus of any post-award protest to whether the agency’s justification is adequately supported by the record.

Despite not having the J&A, a contractor is normally on notice of an agency’s intent to use noncompetitive procedures before award. As a result, a challenge to the decision to limit competition would be treated as a challenge to the ground rules of the procurement – not merely to the award decision. As 4 C.F.R. § 21.2(a)(1) and applicable caselaw make clear, a contractor must raise apparent improprieties in a solicitation before award. Failure to do so waives the issue, meaning it cannot be raised after. There is a clear expectation that contractors will monitor potential procurements and challenge restrictive approaches when they are announced, not after award or after losing the procurement.

What to Do When There Was No Pre-Award Protest

Although a disappointed contractor’s options are limited post-award, they are not without recourse. The available options fall into three primary categories: legal challenges, administrative oversight mechanisms, and policy-level engagement.

1. Post-Award Bid Protest: Even after award, there are certain aspects of the procurement that can be challenged. Courts and GAO routinely emphasize that a J&A must contain reasoned analysis, not conclusory statements. Simply invoking an exception is insufficient without supporting facts. Therefore, an unsupported or inadequate J&A with conclusory or post-hoc reasoning is unlikely to withstand scrutiny. Similarly, an agency-created urgency, lack of advance planning, and inadequate market research cannot support an urgency exception. If the contract awarded exceeds what the justification supports, aspects beyond the initial scope are impermissible. However, it is important to keep in mind that prejudice must exist. This means that the contractor must show that they (1) are a capable, interested source and (2) were improperly excluded from competition. This can present hurdles if the contractor failed to challenge the procurement before award, despite advance notice of the limited source procurement.
2. Administrative Oversight: In instances where it is not possible to bring a bid protest, contractors may turn to agency Inspector Generals (“IGs”). IGs are independent, nonpartisan officials within federal agencies tasked with auditing and investigating procurement actions to detect fraud, waste, and abuse, and to ensure efficiency and compliance with laws. While IGs cannot overturn contract awards, their involvement can prompt formal investigations, request (and in some cases compel) document production, and prompt agencies to explain and justify procurement decisions. IG findings may also lead to internal corrective actions, policy changes, or referrals for further administrative or legal review, making them a meaningful avenue for scrutiny outside the protest process.
3. Congressional Oversight: Policy-level engagement can serve as a meaningful supplement to legal remedies by triggering additional review of an agency’s use of noncompetitive procedures. Through oversight hearings, inquiry letters, and requests for briefings or documents, Members of Congress and congressional committees can scrutinize procurement decisions and demand accountability. Although Congress does not directly overturn contract awards, its involvement can increase public visibility, in some cases accelerate agency review, and influence agency decision-making and future procurement strategies, particularly where concerns relate to competition, funding, or compliance with statutory requirements.