Solicitation types

What is a sources sought notice?

A sources sought notice is a US federal market-research posting that asks businesses to identify themselves as capable of performing an upcoming requirement, before any solicitation exists. Responses directly influence how the eventual contract is competed — including whether it is set aside for small businesses.

Last updated: 2026-06-12

The Rule of Two connection

Federal contracting officers must set a requirement aside for small businesses when market research shows a reasonable expectation that at least two capable small businesses will bid at fair prices — the "Rule of Two." Sources sought responses are the primary evidence in that determination.

This means a strong response from your small business can convert a full-and-open competition into a small-business set-aside, cutting large incumbents out of the field. Conversely, silence from small businesses lets the requirement go full and open.

How to respond effectively

Answer exactly what the notice asks: your capabilities against the draft scope, your business size and socio-economic status under the listed NAICS code, and relevant past performance. Keep it short — a focused capability statement beats a marketing brochure.

State your size status explicitly (small business, 8(a), SDVOSB, WOSB, HUBZone, as applicable) because that is the data point the contracting officer needs for the set-aside decision. Include your UEI and CAGE code so you are easy to record.

Where sources sought fits in the timeline

Sources sought notices typically appear months before the solicitation, alongside or instead of an RFI. Tracking them gives you the longest possible runway: you can shape the set-aside decision, build teaming arrangements, and prepare past-performance references before the RFP drops.

Frequently asked questions

Is a sources sought notice a contract opportunity?
Not directly — no award can be made from it. It is the strongest early signal that a solicitation is coming and a chance to influence how it will be competed.
Does responding obligate me to bid?
No. Responding creates no obligation. Most firms respond to keep the set-aside option alive and to get on the agency's radar, then decide whether to bid when the solicitation appears.
What is the Rule of Two?
A US federal rule requiring contracting officers to set aside acquisitions for small businesses when at least two capable small businesses are reasonably expected to submit fair-priced offers. Sources sought responses are key evidence for it.
Does Canada have sources sought notices?
Canada uses RFIs and Letters of Interest (LOIs) on CanadaBuys for the same market-research purpose. The Rule of Two mechanism is specific to US federal procurement, though Canada applies its own set-aside program (PSIB) for Indigenous businesses.

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Related answers

This article explains government procurement concepts in general terms and is not legal advice. Rely on the specific solicitation documents for any opportunity you pursue.