How to Respond to a Sources Sought Notice (and Help Create a Set-Aside)
What sources sought notices and RFIs are for, how the rule of two uses your answer, and how to write a short response that helps a buy become a set-aside.
Most small businesses skip sources sought notices because there is nothing to win. There is no award, no price to beat and no deadline that ends in a contract. That is exactly why they matter. A sources sought notice is the agency doing market research before it decides how to buy, and one of the decisions riding on that research is whether the requirement will be set aside for small business at all. If capable small firms stay quiet, the contracting officer may not have the evidence needed to restrict the competition, and the work can end up open to everyone. This article explains what these notices are under the Federal Acquisition Regulation, how your response feeds the set-aside decision, and how to write an answer that is short, specific and useful to the person reading it.
What a sources sought notice actually is
Agencies are required to research the market before they buy. FAR 10.001 tells agencies to conduct market research appropriate to the circumstances before developing new requirements documents and before soliciting offers for acquisitions above the simplified acquisition threshold, among other points in the process. The same section says agencies must use the results to determine whether capable sources exist and whether the acquisition should use any of the small business programs in Part 19. In other words, deciding on a set-aside is one of the listed purposes of market research, not an afterthought.
FAR 10.002 describes how that research happens. The techniques it lists include contacting knowledgeable people in government and industry, publishing formal requests for information, holding interchange meetings or presolicitation conferences, and reviewing systems such as the System for Award Management, the Federal Procurement Data System and SBA's small business search tool. It also says market research should include whether the government's needs can be met by small business concerns that will likely submit a competitive offer at fair market prices. A sources sought notice posted on SAM.gov is one of the most common ways agencies carry out that research in public.
The FAR treats requests for information as planning tools, not solicitations. Under FAR 15.201(e), an RFI may be used when the government does not presently intend to award a contract but wants price, delivery, other market information or capabilities for planning purposes. Responses are not offers and cannot be accepted by the government to form a binding contract, and there is no required format. FAR 15.201 more broadly encourages exchanges of information between agencies and industry from the earliest identification of a requirement through receipt of proposals, listing techniques such as small business conferences, one-on-one meetings, draft RFPs, RFIs and site visits. Research and development buys have their own variant: FAR 5.205(a) describes advance notices titled "Research and Development Sources Sought" and says contracting officers must consider potential sources that respond to them for a subsequent solicitation.
If you have not looked at one before, the notice type appears near the top of every SAM.gov listing. Our walkthrough, How to Read a SAM.gov Contract Notice, Line by Line, shows where to find the notice type, the NAICS code and the response instructions, and how a sources sought differs from a presolicitation or a solicitation.
How your response feeds the rule of two
The set-aside decision turns on what the FAR calls a reasonable expectation. For acquisitions above the simplified acquisition threshold, FAR 19.502-2(b) says the contracting officer shall set aside the acquisition for small business participation when there is a reasonable expectation that offers will be obtained from at least two responsible small business concerns and that award will be made at fair market prices. Total small business set-asides shall not be made unless that expectation exists. This is the test people call the rule of two. The section adds that past acquisition history and market research are always important but are not the only factors.
For smaller buys, the default runs the other way. Under FAR 19.502-2(a), an acquisition of supplies or services with an anticipated value above the micro-purchase threshold but not over the simplified acquisition threshold shall be set aside for small business unless the contracting officer determines there is not a reasonable expectation of offers from two or more responsible small businesses that are competitive on fair market prices, quality and delivery. Either way, the contracting officer needs evidence that capable small firms exist. A well-written sources sought response is that evidence, in writing, in the contract file.
Your response can also steer which kind of set-aside is used. FAR 19.203(c) says that above the simplified acquisition threshold the contracting officer shall first consider the socioeconomic programs, meaning 8(a), HUBZone, SDVOSB and WOSB, before considering a general small business set-aside. FAR 19.203(d) says that in choosing among those programs the contracting officer should consider, at a minimum, market research results showing whether socioeconomic firms can meet the requirement and the agency's progress toward its small business goals. If your firm holds one of those certifications, saying so clearly in your response is how that research learns about you. If you are still sorting out which certification fits, our comparison of HUBZone, WOSB, SDVOSB and 8(a) set-asides covers the differences.
Hypothetical example: an agency posts a sources sought for janitorial services at a regional office, estimated above the simplified acquisition threshold. Three small firms respond, and two of them are certified HUBZone businesses that describe comparable building-maintenance contracts. That gives the contracting officer a documented basis to consider a HUBZone set-aside first under FAR 19.203(c), and, if that does not pan out, to rely on the rule of two for a total small business set-aside. If only large companies had responded, the same requirement could reasonably have gone out full and open.
Before you write: decide whether to respond
Not every notice deserves an answer. Check the NAICS code the agency has assigned and confirm you are small under its size standard, because the size standard attached to that code is what determines eligibility if the buy becomes a set-aside. Our explainer on NAICS codes and SBA size standards walks through how to check. Confirm your SAM.gov registration is active and your profile is complete; SBA notes on its How to win contracts page that the information you enter in SAM populates the Small Business Search database agencies use to find contractors. If your registration needs work, our step-by-step SAM.gov registration guide covers it.
Then read the scope honestly. Respond when you could realistically perform a meaningful part of the work, either as a prime or as part of a team that the notice allows. If the requirement is far outside your experience or several times larger than anything you have done, a response that stretches the truth does not help you and does not help the agency build an accurate picture of the market.
What a strong response contains
Start with the notice's own instructions. Many sources sought notices ask specific questions, set a page limit and name the email address and subject line to use. Answer every question in the order asked, stay inside the page limit and send it to the right person on time. FAR 10.001(b) says agencies should not request more than the minimum information necessary, so if the notice asks for three pages, three focused pages beat a ten-page brochure.
Lead with the facts the contracting officer needs for the set-aside decision. Put your company name, Unique Entity ID, CAGE code, business size under the stated NAICS code, and any SBA certifications or veteran status near the top, in plain sentences. If you believe a different NAICS code fits the work better, say which one and briefly why; this is the stage where that feedback is most useful.
Next, show capability with specifics rather than adjectives. Describe two or three contracts or projects that resemble the requirement, with the customer type, approximate size, period of performance and what you delivered. Commercial and state or local work counts as evidence of capability here, just as it can count for past performance later. Our article on past performance for first-time federal bidders explains how to describe that kind of work so evaluators can judge its relevance. If you would team with another firm or use a subcontractor for part of the scope, say so and describe how the work would be divided.
Finally, answer what the agency actually asked about the market. If the notice asks whether the work is commercially available, whether the proposed schedule is realistic or how firms usually price this kind of service, give a direct, candid answer. FAR 15.201(c) lists feasibility of the requirement, contract type, evaluation criteria and the approach for assessing past performance among the concerns early exchanges are meant to surface. A short note that, for example, a proposed performance period looks tight for a new start, or that the work is normally priced per square foot rather than per hour, can shape a better solicitation. Keep it constructive, and remember that a sources sought response is market research, not a proposal, so there is no reason to volunteer detailed pricing strategy or proprietary methods you would rather keep private. If you do include sensitive details and the notice explains how to mark proprietary information, follow those instructions.
After you hit send
Your response is not an offer, so do not treat silence as a loss. Watch SAM.gov for the presolicitation notice or solicitation that follows, and save a search for the agency, the NAICS code and the place of performance so you see it the day it posts. Our guide to finding set-aside contracts on SAM.gov shows how to build those searches, and you can browse open opportunities by type on our total small business set-aside listings and the other set-aside category pages.
It is also worth introducing yourself to the agency's small business office. FAR 19.202-2 says contracting officers should, before issuing solicitations, make every reasonable effort to find additional small business concerns, including by contacting the agency small business specialist and the SBA procurement center representative. SBA's How to win contracts page notes that many agencies have an Office of Small and Disadvantaged Business Utilization or an Office of Small Business Programs and that each agency releases a procurement forecast. A short email to that office referencing your sources sought response, sent through the channel the agency publishes, keeps you on the radar of the people who advise contracting officers on set-aside decisions.
Hypothetical example: a two-person IT firm responds to a sources sought for help-desk support with a two-page answer listing its size under the stated NAICS code, its SDVOSB status, two state agency help-desk contracts and one candid note that the proposed 30-day transition period is short for the ticket volume described. Months later the solicitation posts as an SDVOSB set-aside with a 60-day transition. The firm cannot know whether its response alone changed either decision, but it put the facts in front of the contracting officer at the moment those decisions were being made, which is all a sources sought response can do and is more than most competitors bother with.
Make it a habit
Responding well takes an hour or two once you have a reusable capability write-up, so treat sources sought notices in your NAICS codes as part of your regular pipeline work rather than an occasional chore. If you are just getting started, pair this with our overview of how to find and win your first set-aside contract. And if you want new set-aside opportunities delivered each morning, the SetAside Signal newsletter rounds them up so you can spot the notices worth answering without combing through SAM.gov yourself.
The Set-Aside Desk is published by SetAside Signal, an independent publication, not a government agency. This article isn't legal advice; rules change, so confirm details at sba.gov, sam.gov and acquisition.gov. Published Oct 19, 2026.