How to Change Your NAICS Codes in SAM.gov Without Losing Set-Aside Eligibility

Every federal contract posted on SAM.gov carries a NAICS code — a 6-digit North American Industry Classification System code that identifies what type of work is being purchased. That single code does two things that directly affect your ability to win: it sets the size standard that defines whether you qualify as a small business for that contract, and it determines which set-aside programs apply.

If your SAM.gov entity profile doesn't list the NAICS code the contracting officer assigned to a solicitation, that contract likely won't appear in your opportunity searches — and even if you find it manually, you may have additional compliance hurdles when representing your eligibility. Your NAICS list is your contracting footprint. The codes you list are the codes where you compete.

SBA publishes size standards for every NAICS code in Title 13 of the Code of Federal Regulations, Part 121. Those standards fall into two types: revenue-based (average annual receipts over the prior 3 years) and employee-based (number of employees, averaged over the prior 12 months). The threshold varies significantly by code. A professional services firm in management consulting (NAICS 541611) qualifies as small under a different revenue ceiling than a firm doing computer systems design (NAICS 541512). The code on the contract is the one that counts — not your primary code in SAM.gov.

The mismatch between a contractor's SAM.gov NAICS list and the work they actually do is one of the most common and costly oversights in federal contracting. A firm that has expanded into new service areas but never updated its SAM profile is invisible to contracting officers searching for those capabilities — and missing set-aside opportunities it's genuinely qualified to pursue.

Updating your NAICS codes is also one of the lowest-risk, highest-return administrative actions you can take in SAM.gov. It takes less than an hour. It can open up entire categories of contracts you haven't been matching against. And it's something you should review at least once per year — ideally at registration renewal time.

Most contractors change their NAICS codes too infrequently — often not at all after initial registration. A few situations make an update urgent. Others signal it's simply overdue.

A good rule of thumb: if it's been more than 12 months since you last reviewed your NAICS list against the contracts being awarded in your target market, it's overdue. Use our opportunity matching tool to see which NAICS codes are appearing on the contracts your competitors are winning — and compare that against what's in your SAM.gov profile.

The SAM.gov interface has evolved significantly over the past few years. NAICS codes live in the "Assertions" section of your entity registration — the same section where you manage your business types, certifications, and goods/services information. Here's the current process.

One process note worth knowing: you can edit your entity registration at any time during the year, not just at renewal. Your registration stays active while edits are pending. The 365-day expiration clock continues regardless of interim edits — it only resets when you complete a full renewal cycle.

For the complete SAM.gov registration walkthrough — including the initial registration process, the IRS validation step, and common error fixes — see our SAM.gov registration guide. It covers the full process from initial setup through annual renewal.

Contractors often assume the primary NAICS code carries more legal weight than secondary codes — that it somehow determines your "real" size standard or limits which contracts you can pursue. That's not how it works.

Here's what the primary designation actually affects versus what it doesn't:

The practical implication: set your primary NAICS to the code that most accurately describes your highest-revenue or most strategically important service area. This helps contracting officers who view your entity profile understand your core capability at a glance. But don't obsess over it at the expense of ensuring your secondary list is comprehensive.

Where the primary code matters operationally is in some opportunity discovery platforms and databases that filter or display entity records based on primary NAICS. If CapturePilot or a contracting officer is pulling a list of entities registered under a specific NAICS code, your firm appears regardless of whether the code is primary or secondary — as long as it's in your list. But when you're searchable by code matters only if the code is there at all.

One area where the primary code does have regulatory relevance: the SBA's size certification process for some programs. Under 8(a) certification and certain small business self-certification requirements, SBA and contracting officers may reference your primary NAICS when assessing your principal industry. Keep your primary code current and accurate for this reason — not because it restricts your bidding, but because it defines how your business is officially classified.

This is where most contractors get confused. Your set-aside certification — SDVOSB, WOSB, 8(a), HUBZone — is a program-level designation. It's not tied to specific NAICS codes in your SAM.gov profile. Adding or removing NAICS codes does not, by itself, trigger a requirement to re-certify under those programs.

What does matter is the size standard on each specific contract you pursue. Here's how it plays out in practice:

The underlying principle: your certificationstatus doesn't change when you update NAICS codes. But your eligibilityto use that certification on a specific contract depends on meeting the size standard for that contract's NAICS code. These are two different things — and mixing them up leads to either missed opportunities (refusing to bid because you think you don't qualify) or compliance risk (bidding as small when you exceed the applicable standard).

Use our Quick Checker to verify your size status under specific NAICS codes before pursuing set-aside opportunities. It compares your revenue or employee count against the current SBA size table for any 6-digit NAICS code — so you know your eligibility before you invest proposal time.

Adding NAICS codes expands your opportunity footprint. But it can also create size compliance landmines if you're not careful about which codes you select.

The specific risk: some NAICS codes have materially lower size standards than others. If you add a code with a $10 million revenue threshold to a profile that mostly contains codes with $30 million thresholds, and you're operating near $25 million in revenue, you can no longer represent yourself as small on contracts assigned that lower-threshold code. You've effectively added a code where you're not a small business.

This happens most often in two scenarios:

The solution is straightforward: before adding any NAICS code to your SAM.gov profile, look up the size standard in the SBA's Table of Small Business Size Standards — a public document updated periodically and available at SBA.gov. Compare that threshold against your average annual receipts (or employee count, for employee-based codes). Only add codes where you genuinely qualify as small.

A common question: should you add NAICS codes where you're not small if you plan to pursue those contracts as a large business? Yes — you can add codes and pursue full-and-open competition under them. But be precise in your self-certification on each contract offer. Certifying as small when you exceed the applicable size standard is a False Claims Act violation. The codes in your SAM.gov profile don't create liability — incorrect self-certification on a specific offer does.

One more fact worth knowing: GAO has ruled in multiple bid protests that a contractor is not required to list a solicitation's specific NAICS code in their SAM.gov profile to be eligible for award. The CO's assigned NAICS code — not your SAM registration — determines which size standard applies and governs your size self-certification on that specific offer. Your profile is for discoverability and market positioning, not legal eligibility on any single contract. (GAO B-413198, B-409736.2, B-423730.)

Separately: if a contracting officer assigns a NAICS code to a solicitation that doesn't reflect the actual principal purpose of the work, you can appeal to SBA's Office of Hearings and Appeals (OHA) within 10 calendar days of solicitation issuance. A different code assignment can change the size standard, the set-aside eligibility, and the competitive pool. Most contractors don't use this option — it's worth knowing it exists.

For context on the full SBA set-aside framework and how size standards interact with program requirements, see our guide on small business set-aside thresholds and the complete 2026 SBA size standards guide.

The goal isn't to list every NAICS code that vaguely applies to your industry. It's to list every code under which you could genuinely win and perform a federal contract — and where you qualify as small or are willing to compete full-and-open.

Before doing that work, here's a quick reference for size standards across some common professional services and IT NAICS codes, so you know what you're checking against:

Here's a practical process for identifying which codes to add:

A brief note on the relationship between NAICS codes and PSC (Product and Service) codes: when you're researching contracts in your space, you'll often find that agencies use different PSC codes for similar work. A NAICS 541512 award might carry PSC D301 or PSC D307 depending on the agency and specific requirement. Understanding the PSC codes that pair with your NAICS codes improves your SAM.gov search precision significantly — see our SAM.gov search tips guide for the full filter stack approach.

CapturePilot's opportunity matching uses your registered NAICS codes as the starting point for daily matching — then layers in your certifications, target agencies, and contract size preferences to surface relevant opportunities. Keeping your NAICS list accurate directly improves the quality of your match results.

Updating your NAICS codes is the first step. Making sure the update produces the results you intended requires follow-through. Here's what to check after any significant NAICS change.

One last thing: the connection between your NAICS profile and your pipeline. The contracts in your pursuit pipeline should map directly to the NAICS codes in your SAM.gov profile. If you're regularly pursuing contracts under codes not in your profile, something is out of sync. Either update your profile to reflect your actual business, or reconsider whether those are the right opportunities to pursue. Consistency between your SAM.gov profile, capability statement, and pursuit pipeline is what makes your market positioning coherent to contracting officers who evaluate multiple bids.

For the comprehensive approach to building and managing an opportunity pipeline from first notice to award, see our guide on government contract pipeline management. It covers the full cycle — from initial SAM.gov search through proposal submission and post-award management — with specific workflow recommendations for small businesses.