How to Choose the Right NAICS Code for a Single-Member LLC

Forming your LLC and staring at the NAICS box, unsure what to put? Here's the actual process, step by step.

(New here? Start with What Is a NAICS Code? for the full explanation of what these codes are and why they exist — this guide assumes you already know that and picks up at the "how do I choose mine" step.)

Start with what you actually do, not what you plan to do

NAICS codes classify businesses by their primary revenue-generating activity — not their business name, not their long-term vision, and not every service you're capable of offering. A single-member LLC that does freelance design but dreams of eventually running a full agency still picks the code that matches the design work bringing in money right now.

This trips people up most at two very different life stages: a first-time Gen Z founder who wants the code to reflect ambition rather than current reality, and someone starting a business later in life who's worried about "getting it wrong" and locking themselves into the wrong category forever. Neither concern should drive the choice — and neither is permanent.

The step-by-step process

Step 1

Write down what actually generates your income

Not your job title, not your LLC's name — the specific activity. "I design logos and brand materials for small businesses" is useful. "I'm a creative entrepreneur" is not specific enough to match against a code.

Step 2

Search by keyword, not by guessing the number

Use plain-language terms from Step 1 to search. Don't try to reason your way to a six-digit number from scratch — the sector structure isn't intuitive enough to guess accurately, and guessing wrong is more common than people expect.

Step 3

If more than one code fits, rank by income share

If your business genuinely spans two activities — say, e-commerce product sales and freelance consulting — choose the one that generates the larger share of revenue. If they're close to even, choose whichever one you expect to be primary a year from now, since that's the direction your filings will trend anyway.

Step 4

Check the code's description against your actual services

Read the official description, not just the title. Titles can be short and generic; the description tells you what is and isn't included, which matters if two similarly-named codes could both apply.

Step 5

Use the same code consistently across your paperwork

Your EIN application, state LLC registration, and Schedule C should all use the same NAICS code (unless your business activity has genuinely changed between filings). Consistency matters more than perfection — a mismatch across your own documents raises more questions than a code that's slightly broader than ideal.

Step 6

Revisit it if your business changes, not on a schedule

There's no annual requirement to reconfirm your code. Update it the next time your primary activity actually shifts — for example, if a side offering becomes your main source of income.

Why getting close is usually good enough

The IRS and most state agencies aren't looking for laboratory-grade precision — they're looking for a reasonable, good-faith match to your primary activity. Choosing between two adjacent, similarly-specific codes rarely causes a real problem. What causes problems is picking something wildly unrelated to what your business actually does, or leaving the field blank.

Practical takeaway: If you're stuck between two codes that both plausibly fit, pick the more specific one over the more general one. Specific codes tend to have narrower, more accurate descriptions, which usually means a better match.

What to do next

Now that you know what the number means and who's reading it, the next step is finding the specific code that matches what your business actually does. Two paths from here, depending on where you are:

Search NAICS Codes →