FAR 19.501—General.
Plain-English Summary
FAR 19.501 explains the basic framework for using small business set-asides and small business reserves in federal acquisitions. It covers what a set-aside is, what a reserve is, when each may be used, who decides whether to use them, the role of SBA procurement center representatives (PCRs) and agency small business offices, when contracting officers must make acquisitions available for SBA review, what must be included in solicitations, the fair market price limitation, and where to look for the limitations on subcontracting and nonmanufacturer rule. In practice, this section is the starting point for deciding whether an acquisition should be competed only among small businesses, partially set aside, or reserved for small business participation under a multiple-award structure. It also makes clear that the contracting officer retains the decision authority, but must consider SBA and agency small business input. For contractors, this section matters because it determines whether they can compete, what size standards apply, and whether post-award performance restrictions may apply. For contracting officers, it is a required screening and documentation step that affects acquisition planning, market research, solicitation drafting, and award decisions.
Key Rules
Set-asides are exclusive
A small business set-aside limits an acquisition exclusively to small business concerns. The set-aside may be total or partial, and it may be open to any of the small business categories identified in FAR 19.000(a)(3).
Reserves serve multiple-award buys
A small business reserve is used to award one or more multiple-award contracts under full and open competition, but only among the small business concerns identified in FAR 19.000(a)(3). A reserve may not be used if the acquisition can be set aside, in whole or in part.
Contracting officer decides
The contracting officer makes the determination whether to use a small business set-aside, partial set-aside, or reserve. SBA PCRs may recommend a course of action, but they do not make the final decision unless another provision specifically gives them that authority.
Mandatory review of acquisitions
The contracting officer must review acquisitions to determine whether they can be set aside, in total or in part, or reserved for small business. In making that review, the contracting officer must consider recommendations from the agency small business office or, for DoD, the Office of Small Business Programs.
SBA review access on request
If an SBA PCR requests it, the contracting officer must make proposed acquisitions above the micro-purchase threshold available for review at the contracting office, subject to the PCR’s security clearance. This supports SBA oversight and early small business participation analysis.
Solicitations must state NAICS and size standard
All solicitations involving total or partial set-asides or reserves must identify the applicable NAICS code(s) and corresponding size standard(s). This tells offerors how size eligibility will be determined.
Fair market price still applies
Except where law authorizes otherwise, the government may not award a contract under a small business set-aside if the price to the agency exceeds fair market price. The set-aside authority does not override the requirement to obtain a fair and reasonable market price.
Performance rules are elsewhere
The limitations on subcontracting and the nonmanufacturer rule are not established in this section; FAR 19.505 governs those requirements. This section simply points readers to the applicable rule set.
Responsibilities
Contracting Officer
Review acquisitions for possible total or partial set-asides or reserves; consider recommendations from agency small business personnel and SBA PCRs; make the final determination on whether to set aside or reserve an acquisition; provide proposed acquisitions above the micro-purchase threshold for SBA review when requested; ensure solicitations state the correct NAICS code(s) and size standard(s); and avoid award under a set-aside when the price exceeds fair market price unless another law permits it.
SBA Procurement Center Representative (PCR)
Review proposed acquisitions and may recommend that the contracting officer use a set-aside, partial set-aside, or reserve; request access to proposed acquisitions above the micro-purchase threshold for review; and, where assigned, provide SBA oversight input on small business opportunities.
Agency Small Business Office / OSDBU / DoD Office of Small Business Programs
Provide recommendations to the contracting officer on whether acquisitions should be set aside, partially set aside, or reserved; support agency small business participation goals and acquisition planning; and help identify opportunities for small business participation.
Agency
May establish threshold levels for the required review of acquisitions based on agency needs; ensure acquisition planning processes incorporate small business consideration; and support compliance with small business policy objectives.
Small Business Offerors
Review solicitations for the applicable NAICS code(s) and size standard(s); determine whether they qualify under the relevant small business category; and understand that eligibility for set-aside or reserve competition depends on size status and, where applicable, performance rules addressed in FAR 19.505.
Practical Implications
Contracting officers should treat small business consideration as a required acquisition-planning step, not an afterthought. Failing to review for set-aside or reserve opportunities can lead to avoidable protests, policy noncompliance, or missed small business goals.
A reserve is not a substitute for a set-aside. If the acquisition can be set aside, in whole or in part, the reserve should not be used; choosing the wrong vehicle can create compliance problems and competition issues.
The solicitation must clearly identify the NAICS code and size standard. If those are wrong or omitted, offerors may challenge size eligibility, and the procurement may need amendment or reevaluation.
Price still matters even in a set-aside. If the government would pay more than fair market price, the award cannot be made unless another law authorizes it, so contracting officers need a defensible price analysis.
Contractors should watch for partial set-asides and reserves because they affect who can compete and how many awards may be made. They should also look ahead to FAR 19.505 requirements, since eligibility to compete does not eliminate post-award subcontracting or nonmanufacturer obligations.
Official Regulatory Text
(a) (1) The purpose of small business set-asides is to award certain acquisitions exclusively to small business concerns. A "set-aside for small business" is the limiting of an acquisition exclusively for participation by small business concerns. A small business set-aside may be open to any of the small business concerns identified at 19.000 (a)(3). A small business set-aside of a single acquisition or a class of acquisitions may be total or partial. (2) The purpose of small business reserves is to award one or more multiple-award contracts to any of the small business concerns identified at 19.000 (a)(3), under a full and open competition. A small business reserve shall not be used when the acquisition can be set aside, in total or in part. (b) The contracting officer makes the determination to make a small business set-aside, in total or in part, or a reserve. The Small Business Administration (SBA) procurement center representative (PCR) (or, if a PCR is not assigned, see 19.402 (a)) may make a recommendation to the contracting officer. (c) The contracting officer shall review acquisitions to determine if they can be set aside, in total or in part, or reserved for small business, giving consideration to the recommendations of agency personnel in the Office of Small and Disadvantaged Business Utilization, or for the Department of Defense, in the Office of Small Business Programs. Agencies may establish threshold levels for this review depending upon their needs. (d) At the request of an SBA PCR (or, if a PCR is not assigned, see 19.402 (a)), the contracting officer shall make available for review at the contracting office (to the extent of the SBA representative's security clearance) any proposed acquisition in excess of the micro-purchase threshold. (e) All solicitations involving set-asides, in total or in part, or reserves shall specify the NAICS code(s) and corresponding size standard(s) (see 19.102 ). (f) Except as authorized by law, a contract may not be awarded as a result of a small business set-aside if the cost to the awarding agency exceeds the fair market price. (g) For the applicability of the limitations on subcontracting and the nonmanufacturer rule, see 19.505 .