Long before a solicitation ever appears on SAM.gov, the government has often already decided whether your business gets a shot at the work or has to compete against every large business in America. That decision happens during market research, and the record for it is built out of documents most contractors skim past: sources sought notices and requests for information. Under FAR Part 10, agencies must conduct market research "appropriate to the circumstances" before developing a new requirement or soliciting offers above the simplified acquisition threshold, and that research is what determines whether a contracting officer can lawfully set the work aside for small business under FAR 19.502-2.

What Market Research Is Actually For

FAR 10.002 requires a contracting officer to describe the government's need in enough detail to support real research, then use that description to determine whether commercial products or services can satisfy it and whether small businesses can meet the requirement competitively. The regulation lists nine acceptable techniques, including publishing formal requests in trade publications, querying governmentwide contract databases, holding industry days, and reviewing SAM.gov and SBA databases. A sources sought notice or RFI is simply the written output of several of these techniques at once: it puts the requirement in front of industry and asks who can do the work. The extent of research required scales with dollar value, complexity, and urgency, and a contracting officer may reuse research that is up to 18 months old if it is still current — which means an early, thorough sources sought response can shape acquisition strategy on a follow-on requirement long after the original notice closes.

The Rule of Two, in the Actual Regulatory Text

FAR 19.502-2 sets two thresholds. Between the micro-purchase threshold and the simplified acquisition threshold — $15,000 and $350,000, respectively, since the inflation adjustment that took effect October 1, 2025 — a requirement must be set aside for small business unless the contracting officer determines there is not a reasonable expectation of receiving competitive offers from two or more small businesses. Above the simplified acquisition threshold, the rule flips from a presumption to an affirmative test: the officer must set the work aside when there is a reasonable expectation that at least two responsible small businesses will submit offers and that award will be made at fair market prices. In both cases, the regulation is explicit that "past acquisition history and market research" matter but are "not the only factors" in that determination. If only one acceptable small business offer comes in after a set-aside, the contracting officer should award to that firm; if none come in, the set-aside must be withdrawn and the requirement resolicited on an unrestricted basis.

Why a Head Count Isn't Enough — GAO's Capability Standard

The critical, and frequently misunderstood, piece of the Rule of Two is that finding two small businesses in a database is not the same as finding two that can perform. GAO made that distinction explicit in Triad Isotopes, Inc., B-411360 (July 16, 2015), sustaining a protest after the VA searched SBA and VetBiz databases under a pharmaceutical-manufacturing NAICS code, found numerous small businesses, and set the work aside — without ever confirming that any of those firms actually held the nuclear pharmacy licenses needed to manufacture and deliver radiopharmaceuticals. GAO held that a contracting officer's market research must support "a reasonable expectation" that qualified, capable small businesses will compete — not just that firms exist under the right code. That standard is exactly why a generic, capability-agnostic sources sought response accomplishes nothing: an agency doing careful research needs contractors to affirmatively demonstrate they can do the specific work described, not merely that they exist.

What a Good Response Contains

A sources sought response is not a proposal, and treating it like one — with pricing volumes and boilerplate marketing language — undercuts its purpose. A response that actually moves a set-aside decision typically includes the company's UEI and CAGE codes, size status and any socioeconomic certifications (8(a), SDVOSB, HUBZone, WOSB), and the primary NAICS code under which the firm qualifies as small. The substantive core is capability evidence tied directly to the stated requirement: two or three relevant past-performance examples with contract numbers, dollar values, and dates: technical capabilities that map to what the notice describes rather than what the company generally does; and key personnel or facility/clearance details the requirement calls for. Every specific question the notice asks should be answered directly, and the response should stay tightly scoped: most effective submissions run three to five pages plus a capability statement attachment rather than a full technical volume with detailed pricing, since a sources sought notice is a market-research input, not a proposal. Contractors should also answer honestly if they cannot fully meet the requirement, since an inflated response that later collapses at proposal stage does not help the small business community and can produce exactly the kind of unsupported market research GAO rejected in Triad Isotopes.

Notices Also Shape Which Set-Aside Applies

The same market-research record that decides whether a requirement is set aside at all also decides which flavor of set-aside applies. A contracting officer who receives responses mostly from 8(a), HUBZone, SDVOSB, or WOSB firms has evidentiary support to restrict competition to that narrower category rather than a total small business set-aside. FAR 19.502-2 also carries a separate, higher standard for research and development work: a reasonable expectation of obtaining offers from small businesses that represent the best scientific and technological sources for the work. That is one more reason a response should lead with the certifications and technical differentiators that actually apply, not generic boilerplate.

What It Means for Contractors

Treat every sources sought notice and RFI in your target NAICS codes as a bid on the acquisition strategy itself, not a bid on the eventual contract. Respond even when you are not certain you will pursue the follow-on solicitation — declining to respond removes your business from the count an agency uses to justify a set-aside, and a requirement that goes unrestricted because too few capable small businesses spoke up rarely gets set aside again on a recompete. Keep your SAM.gov profile, NAICS codes, and past-performance narratives current so you can turn a specific, capability-driven response around inside a notice's typical 15-to-30-day window, and calendar the eventual solicitation so a strong sources sought response converts into a strong proposal.

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