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Getting startedJuly 22, 2026 · 7 min read

NAICS Codes for Government Contracts: How to Pick the Right Ones

Your NAICS codes decide which contracts you see and whether you count as a small business. How to choose them and why they matter more than most people think.


What a NAICS code is

NAICS (North American Industry Classification System) codes are six-digit numbers that classify what your business does. The government uses them everywhere: to categorize solicitations, to set small-business size standards, and to decide which set-asides you qualify for.

Every federal opportunity is tagged with a NAICS code. If your business is registered under that code, the opportunity is relevant to you. If it is not, you will never see it — which is why the codes you pick quietly decide your entire pipeline.

Why the right codes matter

Three things ride on your NAICS selection:

Visibility
matching engines and buyers filter by NAICS. Wrong codes = invisible to the right work.
Small-business status
size standards (employees or revenue) are set per NAICS. The same company can be 'small' under one code and 'large' under another.
Set-asides
many opportunities are reserved for small businesses in a specific NAICS. Your codes decide which reservations you can claim.

How to choose them

Be accurate first, strategic second:

  • Start with what you actually do and deliver — the primary code should reflect your real core work.
  • Add secondary codes for adjacent capabilities you can genuinely perform, so you appear for related work.
  • Check the size standard for each code; pick the primary that keeps you 'small' where it helps most.
  • Do not stuff codes you cannot perform — it wastes matches and risks credibility on a bid.

Keeping them current

Your business evolves; your codes should too. Review them yearly and whenever you add a real capability. A stale NAICS profile is one of the most common reasons a capable company sees the wrong contracts — or too few of them.

A code is also wider than a trade, which is the other half of the problem: one NAICS can cover two different lines of work, so a strict code match buries you in contracts you would never bid. YNTELRADAR scores each notice against what your business actually does — the codes, yes, but also the work you described, your set-aside status and your service area — and writes the reason in a line, so you can tell a genuine match from a code collision without opening the solicitation.

The part nobody tells you about your codes

Picking the codes is an afternoon. Living with them is every week after that.

A code is not a filter — it is a doorway, and the work behind it comes from more buyers than anyone expects: federal agencies on SAM.gov, every state portal, and the city, county and school-district sites that buy the same services with different paperwork. Right codes and no coverage still means the notice posted, closed and was awarded while you were on a job.

That is the gap YNTELRADAR closes. It is the most complete government contracting platform on the market, and the only one that takes you from found to WON: federal through SAM.gov, every state portal, and the city, county and school-district sites, in one feed — each notice scored against your business with the reasons written out, the solicitation documents read for you, the price built from what the government actually paid on comparable awards, the companies that won them named, your proposal drafted, and a step-by-step plan that tracks the bid to its result. In English and in Spanish.

The codes decide what you are allowed to see. This decides whether you actually see it.

Start free — seven days of full Pro. No sales call. Cancel in one click.

Frequently asked

How many NAICS codes should I register?

As many as you can genuinely perform — a focused set that reflects real capabilities. Quality beats quantity; codes you cannot deliver on only create noise.

Can my small-business status change by NAICS code?

Yes. Size standards are set per code, so you may be small under one and large under another. Your primary code choice matters for set-asides.

Where do I set my NAICS codes?

In your SAM.gov entity registration, and in your YNTELRADAR profile. YNTELRADAR is the most complete government contracting platform on the market: the only one that takes you from found to WON. We score every federal, state and local notice against those codes and tell you why each one fits, read the solicitation documents for you, price the bid against what the government actually paid, draft your proposal and walk you step by step to submitted — in English and in Spanish. The scored feed is on Starter; the whole cycle is Pro, with the price published on our pricing page.

Sources

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Full access while the trial runs. You answer a short interview about what you do, and the contracts start arriving read, scored and explained.

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$39/mo

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Federal plus two states, every notice scored against your profile.

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Five states, teaming, recompete forecasting and a win plan per bid.

Scale

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Every state plus local sources, and pricing intelligence on top.

Our matching engine was calibrated with thousands of blind evaluations before launch, every score comes with its explanation so you can check it yourself, and the matching improves with your feedback each week. Your founding price stays the same for as long as your subscription stays active.