How to Find Your NAICS Code
Why Your NAICS Code Matters
Your NAICS code directly impacts your insurance premiums, tax obligations, eligibility for government contracts, and how your business appears in industry databases. Using the wrong code can result in higher insurance costs, missed contract opportunities, or regulatory issues. Taking 5 minutes to verify your NAICS code can save thousands of dollars.
Method 1: Search by Business Activity
The most reliable method is to describe what your business actually does and find the matching code. Use the trueNAICS search tool to type in keywords like "plumbing", "software development", or "restaurant". The tool will show you matching NAICS codes with descriptions so you can pick the best fit.
Method 2: Look Up Your Company Directly
If your business is already in commercial databases, you can look up your company by name to see what NAICS code has been assigned. trueNAICS can look up your company using the Veridion intelligence platform, which analyzes millions of companies to determine their primary and secondary NAICS classifications based on actual business activities.
Method 3: Check Your Existing Records
Your NAICS code may already be on file. Check your IRS Schedule C (Box B asks for your 6-digit NAICS code), your business license or registration, your insurance policy documents, any government contract applications, or correspondence from the U.S. Census Bureau.
Common Mistakes to Avoid
Don't use a code that's too broad (use 6 digits, not 2 or 4). Don't pick a code based on what you want to do — pick one based on what you actually do today. If your business spans multiple activities, your primary NAICS code should reflect your largest source of revenue. Secondary codes can capture additional activities. Don't confuse SIC codes with NAICS codes — they are different systems.
Frequently Asked Questions
Can a business have more than one NAICS code?
Yes. Most businesses have a primary NAICS code (their main activity by revenue) and one or more secondary codes for additional business activities. For example, a company that manufactures furniture and also sells it retail would have codes for both manufacturing and retail.
Who assigns my NAICS code?
In most cases, you self-assign your NAICS code when filing tax returns or registering your business. Insurance companies and data providers may also assign codes based on their analysis of your business activities.
Try it now — Search for a NAICS Code
Look up any NAICS code by company name, business activity, or code number.