FAR 19.502-1—Requirements for setting aside acquisitions.
Plain-English Summary
FAR 19.502-1 explains when a contracting officer must set aside an acquisition, or a class of acquisitions, for competition among small businesses. It covers two core policy bases for a set-aside: supporting the Nation’s productive capacity and defense-related needs, and ensuring a fair proportion of federal contracts goes to small business concerns. The section also ties the set-aside decision to the specific circumstances in FAR 19.502-2 and 19.502-3(a), which means the contracting officer must confirm that the applicable small-business set-aside conditions are met before restricting competition. In practice, this rule is one of the main entry points for small-business participation in federal procurement and helps agencies meet socioeconomic and industrial-base goals. The section also identifies important exceptions, including purchases at or below the micro-purchase threshold and purchases from mandatory sources under FAR Part 8, such as the Committee for Purchase From People Who Are Blind or Severely Disabled. For contracting officers, this means the set-aside analysis is not optional when the rule applies, but it must be applied in the right context and only after checking whether an exception removes the requirement.
Key Rules
Set aside when required
The contracting officer shall set aside an individual acquisition or a class of acquisitions for small-business competition when the rule’s conditions are met. This is a mandatory action, not a discretionary preference, once the applicable circumstances exist.
National defense basis
One basis for a set-aside is when it is determined to be in the interest of maintaining or mobilizing the Nation’s full productive capacity for war or national defense programs. This reflects the government’s ability to use small-business participation as part of broader industrial-base and defense readiness policy.
Fair proportion policy
A set-aside is also tied to the policy of assuring a fair proportion of government contracts in each industry is placed with small business concerns. This means the rule supports small-business participation across industries, not just in isolated procurements.
Must meet related circumstances
The set-aside requirement applies only when the circumstances described in FAR 19.502-2 or 19.502-3(a) exist. The contracting officer must therefore use this section together with the more specific small-business set-aside rules that determine whether a particular acquisition should be reserved.
Micro-purchase exception
The requirement does not apply to purchases at or below the micro-purchase threshold. Those buys are outside the mandatory set-aside requirement in this section, although agencies may still use small businesses voluntarily where appropriate.
Mandatory-source exception
The requirement also does not apply to purchases from required sources under FAR Part 8, including sources such as the Committee for Purchase From People Who Are Blind or Severely Disabled. When a mandatory source applies, the Part 8 sourcing rules control instead of this small-business set-aside requirement.
Responsibilities
Contracting Officer
Determine whether the acquisition or class of acquisitions must be set aside for small-business competition, using the policy bases in this section and the related conditions in FAR 19.502-2 or 19.502-3(a). The contracting officer must also identify whether an exception applies, such as the micro-purchase threshold or a mandatory source under FAR Part 8.
Agency
Support implementation of small-business set-aside policy by ensuring acquisition planning and procurement procedures allow contracting officers to apply the rule correctly. Agencies must also recognize when broader industrial-base or fair-share objectives justify set-asides for eligible acquisitions.
Small Business Community
Compete for acquisitions that are set aside under this section and rely on the rule as a mechanism for access to federal contracting opportunities. Small businesses must still meet the applicable eligibility and competition requirements for the specific set-aside.
Program/Requirement Owners
Provide accurate acquisition requirements and planning information so the contracting officer can determine whether the acquisition is subject to a small-business set-aside or falls within an exception. Early coordination is important to avoid misclassification of the buy.
Practical Implications
This section is a threshold decision point in acquisition planning: if the buy is not a micro-purchase and not a mandatory-source purchase, the contracting officer must actively evaluate whether a small-business set-aside is required.
A common pitfall is treating set-asides as optional or waiting until late in the procurement process; the rule requires the decision to be made as part of proper acquisition planning and market analysis.
Another frequent mistake is overlooking the Part 8 mandatory-source exception or assuming every purchase is subject to small-business set-aside rules regardless of dollar value or sourcing hierarchy.
Contracting officers should document the basis for the set-aside decision, including why the related FAR 19.502-2 or 19.502-3(a) circumstances do or do not apply.
For contractors, this rule can significantly affect competition strategy because a set-aside limits the pool to small businesses and may create opportunities that would not exist in unrestricted competition.
Official Regulatory Text
(a) The contracting officer shall set aside an individual acquisition or class of acquisitions for competition among small businesses when- (1) It is determined to be in the interest of maintaining or mobilizing the Nation’s full productive capacity, war or national defense programs; or (2) Assuring that a fair proportion of Government contracts in each industry is placed with small business concerns; and the circumstances described in 19.502-2 or 19.502-3 (a) exist. (b) The requirement in paragraph (a) of this section does not apply to purchases at or below the micro-purchase threshold, or purchases from required sources under part 8 (e.g., Committee for Purchase From People Who are Blind or Severely Disabled).