Notice of Intent to Sole Source on SAM.gov? How to Respond Before the Award
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What a notice of intent to sole source on SAM.gov means, the FAR rules behind it, and how a small business can send a capability statement that gets considered.
Every so often you'll be scrolling SAM.gov and find a notice saying the agency plans to award a contract to one named company without a competition. A lot of small businesses read that, shrug and move on, figuring the deal is already done. Sometimes it is. But the Federal Acquisition Regulation gives you a real, if narrow, opening to speak up before the award, and the agency has to consider what you send. This article walks through what these notices are, the rules that require them, how to read one, and how to write a response that has a fair shot at changing the agency's plan or at least putting your company on its radar for next time.
Everything here was read on the date of this post in the Federal Acquisition Regulation on Acquisition.gov, which showed FAC 2026-01. It's a plain-language overview, not legal advice. For help with a specific notice, your local APEX Accelerator is free.
Why agencies have to post these notices at all
The starting point is FAR 5.201. It says that, as required by the Small Business Act and the Office of Federal Procurement Policy Act, agencies must make notices of proposed contract actions available, and that the contracting officer must transmit a notice to the Governmentwide point of entry for proposed contract actions that meet the threshold in FAR 5.101(a)(1), unless an exception applies. That point of entry is SAM.gov. The same section states the purpose plainly: the notice is there to improve small business access to acquisition information and to enhance competition by identifying contracting and subcontracting opportunities.
That purpose doesn't switch off just because the agency already has a company in mind. FAR 5.203(a) says the notice must be published at least 15 days before issuance of a solicitation, or before a proposed contract action the government intends to solicit and negotiate with only one source under the authority of FAR 6.302. So a planned sole-source deal still has to show up on SAM.gov first, with a waiting period, unless an exception in FAR 5.202 or a special situation applies. For commercial products and services, the same section lets the contracting officer set a shorter period or use a combined synopsis and solicitation, so don't count on getting the full 15 days every time.
The sentence that matters most in the notice
The FAR spells out what goes into a synopsis in FAR 5.207, and one item is aimed right at you. Under 5.207(c)(16)(ii), when the agency is using the sole-source authority at FAR 6.302-1, the notice must include a statement that all responsible sources may submit a capability statement, proposal or quotation, which shall be considered by the agency. That's the invitation. It doesn't promise the agency will change course, but it does mean your response can't simply be ignored.
There's a second rule that backs this up. FAR 6.302-1(d)(2) says that for contracts awarded under this authority, the notices required by 5.201 shall have been published and any bids, proposals, quotations or capability statements must have been considered. In plain terms, the agency has to post the notice and actually look at what comes in.
What "only one responsible source" really covers
FAR 6.302-1 is the authority you'll see cited most often. It lets an agency skip full and open competition when the supplies or services are available from only one responsible source and no other type of supplies or services will satisfy the agency's requirements. For DoD, NASA and the Coast Guard, the rule also allows "one or a limited number" of responsible sources. The section gives examples of when this might fit, such as unique supplies or services from a single supplier with unique capabilities, limited rights in data, patents, copyrights or secret processes, certain utility services, and standardization decisions where only specific makes and models will work. It also says that the mere existence of those rights or circumstances does not, by itself, justify a sole source.
That last point is where a small business has room to push. If the notice leans on the idea that only one company can do the work, your job is to show the agency, with specifics, that you can do it too, or that a different product or approach meets the same need. Brand-name purchases are a related case. FAR 6.302-1(c) says that an acquisition using a brand-name description peculiar to one manufacturer does not provide for full and open competition and has to be justified, while a "brand name or equal" description does allow competition and doesn't need a justification.
Smaller buys work a little differently. FAR 13.106-1(b) says that for purchases not exceeding the simplified acquisition threshold, the contracting officer may solicit from one source if only one source is reasonably available, giving examples such as urgency, exclusive licensing agreements, brand name or industrial mobilization. If you want the bigger picture on small purchases, see our post on micro-purchases and simplified acquisitions.
How to read the notice before you write anything
Start with the basics you'd check on any notice, and if you need a refresher, our guide on how to read a SAM.gov contract notice covers the fields. Then look for four things that are specific to a sole-source notice. First, the authority cited, which tells you whether the agency is claiming a single source, urgency or something else. Second, the description of what's being bought, because FAR 5.207(c) says the description should not be unnecessarily restrictive of competition and should let a prospective offeror make an informed business judgment. Third, the response date and the format the contracting officer wants. Fourth, the named company, which you can look up on SAM.gov the same way you'd vet a teaming partner, and whose past awards you can research with the steps in our post on researching past contract awards.
Here's a hypothetical. A regional office posts a notice saying it intends to award a one-year maintenance contract for a particular brand of building access-control system to the company that installed it, citing FAR 6.302-1 and saying the vendor is the only authorized service provider. A small security integrator reads it and realizes it's also factory-certified on that exact system. That's a strong, specific reason to respond. A different integrator who works on other brands has a weaker case unless it can explain why a different approach would still meet the agency's need.
Writing a capability statement that gets considered
Keep it short, direct and tied to the notice. Respond to the specific requirement, not your whole company history. If the agency says only one company holds a certain certification, show that you hold it too and attach proof if the notice allows attachments. If the agency says only one product works, explain how your product meets the stated need, in terms of the functions the description lists. Include your company name, Unique Entity ID, the relevant NAICS code and size status, and a named point of contact. Our guide to capability statements for federal contracts covers the format, and the SAM.gov registration guide will help if your entity record isn't active yet.
Send it to the person and address the notice names, before the stated deadline, and in the format requested. Stay factual and polite. A response that reads like an attack on the incumbent tends to get less attention than one that simply proves you're capable. Don't send pricing unless the notice asks for a quotation or proposal.
What your response can and can't do
Even if you don't win this one, a written response leaves a record. FAR 6.303-2 lists what a written justification must contain. Among other things, it has to describe the market research the agency did, list the sources, if any, that expressed in writing an interest in the acquisition, and state any actions the agency may take to remove or overcome barriers to competition before the next acquisition. Your letter is the kind of written interest that section has in mind.
Those justifications don't stay hidden. FAR 6.305 says the agency shall make the justification publicly available, generally within 14 days after contract award, at SAM.gov and on the agency's website, and that it must remain posted for at least 30 days. Urgency justifications under 6.302-2 get 30 days after award, and brand-name justifications get posted with the solicitation. Reading those posted justifications is a smart habit. They tell you why the agency thought nobody else could do the work, which is exactly what you need to address before the next round.
If the agency decides your response shows real competition exists, it may compete the requirement instead, sometimes as a set-aside. When that happens, you'll want to be ready, so keep an eye on our total small business set-aside listings and the full set-aside listings, which come from public notices on SAM.gov. And if a notice looks like an early-stage market check rather than a done deal, our guide on responding to a sources sought notice is the better playbook.
Helpful reading. For more on this topic, see government contracting for small business books (Affiliate link) and capability statement and proposal writing guides (Affiliate link). As an Amazon Associate I earn from qualifying purchases.
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 with the official sources: SBA (sba.gov), SAM.gov and the FAR at acquisition.gov. Published Nov 5, 2026.