Forming your LLC or corporation gets you registered — it doesn't necessarily get you *licensed*. Depending on your industry and location, operating without the right licenses or permits can mean fines, shutdown orders, or being denied insurance coverage. Here's how to find out what applies without guessing.
The three layers
Business licensing happens at three levels, and you may owe something at each:
| Level | Examples | Who issues |
|---|---|---|
| Federal | Alcohol, firearms, aviation, FDA-regulated products | Federal agencies |
| State | Professional licenses, sales tax permits, health permits | State licensing boards / revenue dept |
| Local | Zoning, business operations, food service, signage | City / county |
The same business can need one, two, or all three. A food truck, for example, typically needs a local business license, a health permit, a state sales tax permit, and sometimes a special mobile-vending permit.
The classic beginner mistake
The #1 error is assuming "I formed an LLC, so I'm licensed." The LLC registration proves the *entity exists*; licenses prove *you may do this activity here*. They're separate systems.
The #2 error is the reverse — assuming a license covers your industry when it doesn't. A general business license doesn't authorize you to practice medicine, sell liquor, or prepare food. The two systems are independent.
Do you need a state professional license?
If your work requires a license to practice, the state licensing board is the gatekeeper:
- Doctors, lawyers, CPAs, architects, engineers — state-issued professional licenses.
- Contractors and tradespeople — state contractor licenses, often tiered.
- Barbers, cosmetologists, massage therapists — state licenses.
- Real estate agents and insurance brokers — state licenses.
These are non-negotiable for the profession and typically require education, exams, and renewal.
Sales tax permit / resale certificate
If you sell goods or taxable services, you generally need a sales tax permit from your state's revenue department. This lets you collect sales tax from customers and remit it to the state. If you buy goods wholesale to resell, a resale certificate lets you buy without paying sales tax at purchase.
This is separate from your business registration and separate from your state tax ID — it's its own registration with its own filing cadence.
Local licenses and zoning
Cities and counties add their own layer:
- General business license / tax registration — most cities require one.
- Zoning approval — your activity must be allowed in your location. A home-based business in a residential zone, or a restaurant in a commercial zone, both need the right zoning.
- Special permits — food service, alcohol, signage, music, short-term rentals, and more vary by municipality.
Industry-specific federal permits
Only a subset of businesses need federal licensing — but for those that do, it's mandatory:
- Alcohol and tobacco — federal permits from the Alcohol and Tobacco Tax and Trade Bureau.
- Firearms and ammunition — ATF licenses.
- FDA-regulated products — food processing, drugs, medical devices, cosmetics.
- Aviation, transport, and broadcasting — industry-specific federal licenses.
If your industry is federally regulated, you'll know from the trade — and the federal license is the biggest of the three hurdles.
How to find out what you need (without guessing)
- Start federal — check the federal Small Business Administration's license-and-permit guidance for your industry.
- Check your state — your state's business portal usually lists licensing requirements by industry.
- Call your city/county — the local business office or chamber of commerce knows local requirements cold.
- Ask a professional — a business license research service (or a local attorney) can compile the full federal + state + local list for your specific case.
The DIY version is manageable for one location and industry — it's when you operate in multiple cities, or a heavily regulated industry, that research becomes a real project.
What happens if you skip a license
- Fines and penalties — often daily, accumulating until fixed.
- Cease-and-desist or shutdown — local authorities can stop operations.
- Insurance denial — a claim on unlicensed work may be denied.
- License risk — for regulated professionals, operating without the license can jeopardize future licensure.
Common questions
Is a business license the same as a business registration? No. Registration (LLC/corp) makes your entity official; licenses permit specific activities in specific places.
Do I need a license if I work from home? Often yes — most cities still require a business license even for home offices, and you'll need to confirm your home-based activity is zoned properly.
Does every business need a sales tax permit? Only if you sell goods or taxable services — and whether your services are taxable varies by state. Check before assuming.
Is an EIN a license? No. The EIN is your federal tax ID (see our EIN guide). It identifies your business for tax purposes; it doesn't permit any regulated activity.
Get the research done once
For a single business in one city, the research is an afternoon. For regulated industries or multiple locations, it's a project. Our Business License Research service compiles the full federal + state + local list for your exact industry and city — so you start operating with every box checked.