Business Licenses and Permits: Finding Every Layer That Applies

There is no single business license in the United States. Permission to operate is assembled from up to four layers at once — a federal license if the activity is federally regulated, one or more state licenses, a county permit, and a city permit — plus a professional board license where the work itself is regulated. Federal licensing covers a short list of specific activities. Everything else is state and local, which is why the answer changes when a business crosses a county line.

Start from the activity, not the entity

Licensing attaches to what a business does, where it does it, what it sells, what equipment it runs, and who it employs. It does not attach to whether the owner chose an LLC or a corporation. Forming an entity with a state filing office creates a legal person; it grants no permission to trade. The two systems are frequently confused because both involve a state government.

The productive first step is a plain description of operations. Write out the activities, the physical locations, the products, the customer types, and the equipment. Every license requirement flows from one of those.

• What is sold — goods, services, food, alcohol, regulated products, or advice.
• Where the work happens — a leased site, a home, a vehicle, a customer's property, or online.
• What equipment is used — scales, commercial kitchens, boilers, spray booths, medical devices.
• Whether anyone is employed, and whether they need individual credentials.
• Whether the business handles money for others, personal data, or hazardous materials.
• Which counties and cities it physically enters, including for delivery or installation.

The federal layer is short and specific

Most businesses need no federal license at all. The federal government licenses particular activities rather than commerce generally — alcohol production and importation, firearms and explosives, commercial fisheries, aviation, radio and television broadcasting, interstate transport of goods and passengers, and certain agriculture, mining and drilling operations, each administered by its own agency.

The Small Business Administration maintains a current list of the federally licensed activities and which agency handles each. Two things are not licenses but sit in the same conversation: a federal employer identification number, which is a tax account obtained from the IRS, and federal trademark registration, which protects a brand rather than authorizing an activity.

Note: Some federal rules bind a business without any license being issued at all. Advertising, endorsement and consumer-protection obligations under the FTC's business guidance apply to companies that never file anything federally. Absence of a license requirement is not absence of regulation.

The state layer, which is really two layers

States handle this differently enough that experience in one state is misleading in another. A handful — Washington, Nevada and Alaska among them — require a general state business license or registration for essentially everyone. Most states have no general license and instead regulate by industry.

Nearly every state with a sales tax requires a seller's permit or sales tax registration before making taxable sales, which functions as a license in practice. Employers separately register for state unemployment insurance and, in most states, must carry workers' compensation coverage. Industry licenses at state level commonly cover contractors, food handling, childcare, security services, debt collection, insurance and vehicle sales.

Professional boards are a separate track

Where the work itself is regulated — medicine, nursing, law, engineering, architecture, accountancy, cosmetology, real estate — an individual practitioner holds a license from a state board, and in many fields the firm needs its own registration on top of the individual's.

Board rules reach beyond competence. Many govern who may own the practice, how it may be advertised, and what happens to a license after a criminal conviction, which is covered in our guide to occupational licensing after a conviction. Board discipline runs on its own procedure, independent of any city or county permit.

The county and city layer, where most gaps appear

Local permissions are the ones businesses miss, because they are numerous, cheap, and enforced only when someone complains or inspects.

Watch out: Operating without a required license can cost more than a fine. In California, for example, a contractor who was unlicensed when the work was performed generally cannot sue to collect payment and may be ordered to return what it was paid. That is a labelled state example, but similar unlicensed-contractor rules exist elsewhere, and no contract term cures them.

Renewals, changes, and the second location

Licenses expire on different cycles and none of them share a calendar with the entity's state report. A business can be in perfect standing with the secretary of state and closed by the health department in the same week — our guide to registered agents and periodic reports covers that separate system.

1. Before signing a lease

   Confirm the zoning allows the intended use at that exact address. Zoning is the one thing you cannot fix after committing to a site.

2. Before opening

   Complete inspections and obtain the certificate of occupancy, health permit and local business license. Several are sequential, not parallel.

3. On hiring the first employee

   Register for state employment taxes and put workers' compensation coverage in place, which is a state requirement in nearly every state.

4. On each change

   New product line, new equipment, delivery service, alcohol, or a second location — each can add a permit and each can void an existing one.

5. Annually

   Re-run the map. Ordinances change, and renewal notices go to whatever address was on file years ago.

Expanding across a state line adds an entity registration too, described in our explainer on foreign qualification, and a business trading under a name other than its legal one usually needs the filing covered in our guide to fictitious business names.

Common questions

I formed an LLC. Doesn't that mean I'm licensed?

No. Forming an entity creates a legal person that can own property, sign contracts and limit owner liability. It grants no authority to sell food, cut hair, build a deck, or open a shop on a particular street. Those come from licensing agencies that never see your formation documents. The two processes run in parallel and neither one checks the other.

Do I need a city license for every city I deliver into?

Sometimes, and it is a common surprise. Many cities define doing business broadly enough to include regular deliveries, installations or service calls within their limits, and some enforce it against out-of-town trades. The practical approach is to list the cities you physically enter on a recurring basis and check each one's ordinance, rather than assuming a home-city license travels.

What happens if I discover a missing permit after opening?

Usually you apply late, pay whatever the agency charges for the lapse, and pass any inspection you skipped. Most agencies are more interested in compliance than punishment for a first, self-reported gap. The risk is different where the missing license affects contract enforceability or where an incident happened during the unlicensed period, since insurers sometimes raise it in coverage disputes.

Is an online-only business exempt from local licensing?

Rarely. Most cities license businesses based at an address within their limits regardless of where customers are, and a home-based operation may also need a home occupation permit. Selling into other states raises separate sales tax registration questions that depend on each state's economic nexus rules. "Online" changes the customer base, not the location of the business.

Building the map once, properly

Write the operations description first, in one page. Then work down the layers in order: federal activity list, state general license if the state has one, state tax and employer registrations, state industry license, professional board, county, city.

Call the county and city directly and describe the business in plain terms rather than asking whether you need a license. Front-counter staff answer the specific question well and the general one badly.

Record every result in a single sheet: agency, permit name, number, issue date, renewal cycle, renewal contact, and the trigger that would require an amendment. Put renewals on a shared calendar with a named owner, and re-check the whole map whenever the business adds a location, a product category or a piece of equipment. Background on the entity itself sits in the Legal Information Institute's Wex overview of the corporation.