If you’ve formed a business, you’ve picked a NAICS code, whether you thought carefully about it or just grabbed whatever seemed closest on a dropdown menu. Most people do the second one, and it’s an easy field to treat as a formality. It isn’t. Get it wrong, or leave it too vague, and it can quietly work against you later, at tax time, when you’re applying for financing, and especially if you assume it does something it doesn’t.
Short version: NAICS is a six-digit code that classifies your business’s primary activity, used for taxes, SBA loan eligibility, and industry benchmarking. Pick it based on whatever activity generates the most revenue, not everything you do. The single biggest misconception: your NAICS code is not the same thing as your workers’ comp classification code, they’re entirely different systems, and confusing them can cost you real money on your insurance premium.
What NAICS Actually Is
NAICS, the North American Industry Classification System, is a six-digit code that classifies your business’s principal economic activity. Federal agencies use it to collect statistics, determine eligibility for government contracts and SBA programs, and compare your reported numbers against industry norms.
It’s built like nesting boxes, each digit narrows the classification further, from a broad sector down to a specific, detailed industry. The Census Bureau maintains a free search tool at census.gov/naics, search a plain-language term for what you do, “plumbing contractor,” “electrical work,” “landscaping,” and you’ll get a list of matching codes with descriptions to pick from.
The rule for picking the right one: choose the code that matches whatever activity generates the largest share of your revenue, not every service you offer. A general contractor who also occasionally sells materials still uses the contracting code if that’s where most of the money comes from. If your business genuinely splits evenly across a couple of distinct activities, you can list a secondary code too, but your primary code should reflect where the bulk of your actual income comes from.
Why This Actually Matters
SBA loan and program eligibility. The Small Business Administration sets “small business” size standards per NAICS code, not as one flat rule across every industry. Whether your business qualifies as a small business for SBA-backed financing or federal contracting purposes literally depends on which code you’ve selected and how your revenue or employee count compares to that specific code’s threshold.
IRS industry benchmarking. Your tax return includes a business activity code drawn from NAICS. The IRS uses this to compare your reported expenses and deductions against typical patterns for businesses in that category. An accurate code means your numbers get compared to genuinely similar businesses. An inaccurate or overly generic one can make your expenses look unusual relative to a category that doesn’t actually describe what you do, which is exactly the kind of mismatch that draws unwanted attention.
Does Your NAICS Code Affect Your Financing Odds? (What the Facebook Posts Get Half-Right)
If you’ve seen posts floating around about “low-risk NAICS codes” that supposedly unlock better loan approval, here’s the honest breakdown, because there’s a real mechanism buried in there, and also some genuinely bad advice riding along with it.
What’s actually true: many lenders, especially alternative and fintech lenders, do sort industries into risk tiers, preferred, normal, high-risk, sometimes outright restricted, as part of how they evaluate a loan application. Construction and specialty trade contractors show up consistently on the higher-risk side of that list. Professional services and healthcare tend to land on the lower-risk side. This part of the internet chatter isn’t made up.
What’s misleading, and sometimes actively bad advice: the framing that you should “choose” a lower-risk code to improve your odds. Your NAICS code has to reflect what your business actually does, full stop. A lender isn’t reading that code in isolation, they’re checking it against your business name, your bank activity, your tax returns, sometimes your website. An electrical contractor listing themselves as “professional services” to dodge a high-risk label creates a mismatch that’s itself a red flag, and depending on how it’s used, edges toward actual misrepresentation on a loan application. That’s a real legal problem, not a clever workaround.
If you’re in a trade that lands on the higher-risk side of this list, and a lot of the trades this site is written for genuinely are, the honest move isn’t hiding it. It’s countering it: strong, well-documented financials (a clean, separate business bank account makes this a lot easier to demonstrate), collateral, a real track record, and looking at lenders who specifically work with trade and construction businesses rather than a generalist bank running everyone through the same risk model. SBA-backed loans in particular run on their own size-standard criteria rather than the same risk-tier system a conventional bank uses, often a genuinely better path for a trade business for exactly this reason. Building business credit that stands apart from your personal credit helps here too, in the right order.
Commonly cited lower-risk categories: professional services (NAICS 54), healthcare (NAICS 62), and generally any business with steady, recurring revenue rather than project-to-project income.
Commonly cited higher-risk categories: construction and specialty trade contractors, transportation and warehousing, bars, nightclubs, and restaurants, wholesale and retail trade (thin margins are the reason usually given), staffing and temp agencies, and cash-intensive businesses generally, harder to verify income, which makes lenders more cautious regardless of how reliable the actual owner is.
Worth being clear about one more thing: this reflects statistical default patterns across an entire industry category, not a judgment on any individual tradesperson’s actual reliability. It’s a real factor in how some lenders evaluate you, not a verdict on you personally.
The Mistake That Actually Costs Money: Confusing NAICS With Your Workers’ Comp Code
This is the one worth understanding clearly, because it’s a genuinely common mix-up, and getting it wrong doesn’t just create paperwork confusion, it can affect what you actually pay for insurance.
Your NAICS code describes your business at the industry level. Workers’ compensation insurance uses a completely different system, run by the NCCI (National Council on Compensation Insurance) in most states, that classifies risk at the job-duty level, what an individual employee actually does day to day, not what industry the business belongs to overall.
Here’s why that distinction is real money, not just semantics: a residential carpenter’s NCCI class code carries a workers’ comp rate roughly 84 times higher than a clerical worker’s class code. A single business can have employees under several different NCCI codes at once, office staff under a clerical code, field crew under a much higher-risk trade code, a driver under yet another, even though the whole business shares one NAICS industry code. Your NAICS code is a reasonable starting point for figuring out your general category, but you cannot use it directly to determine your workers’ comp classification or rate. That translation has to happen separately, with your insurer or a licensed agent, using the actual job duties involved.
One more wrinkle worth knowing if you operate in certain states: California, New Jersey, New York, Delaware, and Pennsylvania have opted out of the standard NCCI system entirely and run their own state-specific classification systems. Another 10 states use modified versions. If you’re in one of those states, or ever expand work across state lines, confirm your classification against your specific state’s system rather than assuming the standard NCCI codes apply directly.
Can You Change Your NAICS Code Later?
Yes, and you may need to as your business evolves. If what generates most of your revenue shifts over time, say you started mostly doing repair work but now do more installation, it’s worth revisiting your code rather than leaving it stuck at whatever you picked when you first formed the business. This ties directly into the liability insurance and workers’ comp side of things too, since what your business is classified as affects your coverage, worth reviewing both together rather than treating them as a one-time setup task you never revisit.
Frequently Asked Questions
No, they’re different systems entirely. NAICS classifies your business at the industry level for taxes and statistics. Workers’ comp uses NCCI class codes (or your state’s own system) that classify individual job duties by risk, and rates between codes can differ by dozens of times. Don’t assume your NAICS code determines your workers’ comp rate.
The Census Bureau maintains a free search tool at census.gov/naics. Search a plain-language description of your main activity and review the matching codes and descriptions to find the one that fits.
Choose your primary NAICS code based on whichever activity generates the largest share of your revenue. If a second activity makes up a genuinely significant portion of your business, you can list a secondary code, but your primary code should reflect where most of your income actually comes from.
Yes. The SBA sets “small business” size standards per NAICS code, not as a single flat rule, so whether your business qualifies for SBA-backed loans or federal contracting programs depends on which code you’ve selected and how your revenue or employee count compares to that code’s specific threshold.
Yes, and you should if your primary revenue-generating activity has genuinely shifted since you first registered. It’s worth reviewing periodically rather than treating it as a one-time decision that never needs revisiting.
No, not legitimately. Your code has to match what your business actually does, since lenders cross-check it against your business name, bank activity, and tax returns. Choosing a code that doesn’t reflect your real business creates a mismatch that’s its own red flag, and can edge toward misrepresentation on a loan application.
Yes, construction and specialty trade contracting commonly show up as higher-risk categories with conventional and alternative lenders, reflecting industry-wide default statistics, not individual reliability. SBA-backed financing, which uses its own separate size-standard criteria, is often a stronger path for trade businesses for this reason.
- Sources
NAICS structure, selection rule, and downstream effects: LegalClarity
NAICS vs. NCCI distinction and rate example: WorkCompOne
State opt-out list for NCCI system: Insureon - Nav (lender risk-tier framework, general/preferred/high-risk categorization)