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Why Your NAICS Code Is Costing You Contracts

A-Frame Solutions July 2026 6 min read

The short answer: A SAM.gov saved search is a code filter, not a capability filter. It returns only what's filed under the exact NAICS codes you set — so it silently misses work the contracting officer coded differently, work filed under adjacent codes, and grants and cooperative agreements, which carry no NAICS at all. If your pipeline starts and ends with a saved search, you're blind to a real slice of what you could win.

Every capture team we talk to runs some version of the same play: pick your NAICS codes, save a search on SAM.gov, and let the daily emails roll in. It feels comprehensive. It isn't.

The NAICS code was never designed to describe your company. It describes one acquisition's predominant purpose, as judged by the contracting officer who wrote the requirement. That's a subtle but expensive distinction — because it means the code on a solicitation reflects someone else's snap judgment about how to classify the work, not an objective fact about whether you can do it.

A code filter has three blind spots

When you filter by code, you inherit every place the code system is lossy. There are three big ones, and they compound.

Blind spot #1: agencies mislabel constantly

The NAICS assigned to a solicitation is the CO's call about the acquisition's principal purpose. Reasonable COs land in different places. A software-sustainment effort might be coded 541512 (computer systems design), 541511 (custom programming), or 541519 (other IT services) depending on who wrote it. We've watched genuine services engagements get filed under a commodity/manufacturing code because the deliverable happened to include hardware — the kind of thing a keyword or code filter will never catch, but a human reading the statement of work spots in seconds.

Blind spot #2: your work lives under codes you didn't list

Most firms save three to six codes. But capability doesn't respect code boundaries — an IT modernization shop wins work coded under data services, cybersecurity, program management, and cloud, often on the same contract vehicle. If your saved search only covers your "primary" codes, the adjacent work is invisible by design. This is the single thing a SAM.gov saved search structurally cannot do for you: surface strong fits filed under codes you didn't think to set.

Blind spot #3: your own primary code is probably imperfect too

Here's the uncomfortable part. When we blind-tested AI capability inference against real federal award histories for a set of small businesses, the single dollar-dominant NAICS code — the one under which the company had actually won the most money — was missing from the naive inferred set roughly 40% of the time. Companies routinely under-describe themselves, and the code they lead with isn't always where their winnable work is posted. If even a company's own code is a lossy summary of what it does, filtering the entire market by that code is a leaky net.

What to do instead: match on capability, not codes

The fix isn't more codes or more keywords — it's a different question. Instead of "what's posted under code X," ask "what active work matches what my company actually does." That means reading the solicitation itself and comparing it to your capabilities, the way a former contracting officer would size up fit: is the scope a real match, is it your set-aside, is the size winnable, is there an entrenched incumbent?

That's exactly why we built ArcScout. You describe your business (or just paste your website); it builds an editable capability profile and matches it against active SAM.gov and Grants.gov opportunities — scoring each on real scope fit, not keyword overlap, and explaining why it fits. Critically, it surfaces strong matches filed under codes you didn't list, and it reaches grants that have no NAICS at all. It's free, and there's no login to try it.

Stop filtering the market by a code that doesn't describe you.

ArcScout matches active federal contracts and grants to what your business actually does — with a former-CO-grade read on why each one fits. Free, no login.

Try ArcScout Free → Talk to a former CO

Frequently asked questions

Does a SAM.gov saved search show every opportunity I could bid on?

No. A saved search returns notices filed under the exact NAICS codes, keywords, or set-asides you configured. Agencies routinely file work under adjacent or mislabeled codes, and grants and cooperative agreements carry no NAICS at all — so a code-exact filter is structurally blind to a portion of your addressable pipeline.

Why does the same type of work show up under different NAICS codes?

The contracting officer assigns the code based on the predominant purpose of the acquisition, and reasonable people disagree — IT modernization can land under 541512, 541511, 541519, or 518210 depending on who wrote the requirement. The code reflects the CO's judgment, not a fixed rule, so identical work scatters across several codes.

How do I find contracts filed under NAICS codes I didn't list?

Match on capability instead of codes. Tools that read the actual solicitation text and compare it to what your company does — semantically, not by keyword — surface relevant work regardless of the code the CO assigned. ArcScout does this: it finds strong fits filed under codes you didn't list, which a saved search cannot.

Do federal grants use NAICS codes?

No. Grants and cooperative agreements on Grants.gov are classified by CFDA / Assistance Listing Numbers, not NAICS or PSC. A NAICS-based search will never surface them, even when the work is squarely within your capabilities — a common blind spot for research, health, energy, and university-adjacent firms.