Which business licenses you need at the federal, state, and local levels comes down to three things: what your business does, where it operates, and how it’s structured. Most small businesses need licenses or permits from at least two levels of government, and many need three. A restaurant typically needs a local operating permit, a state health department license, a sales tax registration, and possibly a federal alcohol permit. A freelance web designer working from home might only need a local business tax certificate. The U.S. Small Business Administration keeps a free guide matching common business activities to the federal agencies that regulate them, which is a practical place to start.1U.S. Small Business Administration. Apply for Licenses and Permits
Form the Business Before You Apply for Anything
You can’t apply for most licenses until your business legally exists. For an LLC, corporation, or partnership, that means filing formation paperwork with your state’s Secretary of State. This step creates the legal entity, but it is not a business license. It proves your company exists; it does not authorize you to do anything in particular.
Sole proprietors generally skip the Secretary of State filing because, legally, you and your business are the same person. The industry-specific and local licensing requirements still apply.
You’ll also need an Employer Identification Number from the IRS if you have employees, operate as a partnership, LLC, or corporation, or need to file excise or certain other tax returns.2Internal Revenue Service. Employer Identification Number Sole proprietors with no employees can legally use their Social Security number instead, though many get an EIN anyway to keep their SSN off invoices and bank forms. The IRS issues EINs online, immediately, and for free.3Internal Revenue Service. Get an Employer Identification Number
Federal Licenses Apply Only to Specific Industries
Most small businesses never need a federal license. Federal licensing applies only when your activity falls under the jurisdiction of a specific national agency. If nothing below describes what you do, move on to state and local requirements.
Firearms and Explosives
Manufacturing, dealing in, or importing firearms requires a Federal Firearms License from the Bureau of Alcohol, Tobacco, Firearms and Explosives. The ATF issues nine types of firearms licenses and five types of explosives licenses, each tied to a specific activity.4Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). Fact Sheet – Federal Firearms and Explosives Licenses by Types
Alcohol Production, Importing, and Wholesale
Federal law makes it illegal to distill spirits, produce wine, import alcoholic beverages, or buy them at wholesale for resale without a basic permit from the Alcohol and Tobacco Tax and Trade Bureau.5Office of the Law Revision Counsel. 27 USC 203 – Unlawful Businesses Without Permit TTB handles applications through its Permits Online system, and there is no federal fee to apply for or maintain the permit.6TTB: Alcohol and Tobacco Tax and Trade Bureau. Applying for a Permit and/or Registration You’ll almost certainly need a separate state liquor license on top of the federal permit.
Aviation
Running a pilot school, maintaining aircraft, or manufacturing aviation products requires certification from the Federal Aviation Administration. Pilot and flight instructor certificates fall under 14 CFR Part 61, while production and airworthiness approvals are governed by 14 CFR Part 21.7eCFR. 14 CFR Part 61 – Certification: Pilots, Flight Instructors, and Ground Instructors
Agriculture and Animal Imports
Importing live animals, animal products, plants, seeds, or soil into the United States requires coordination with the Animal and Plant Health Inspection Service.8Animal and Plant Health Inspection Service. Plant and Plant Product Imports Depending on the species, you may also need permits from the U.S. Fish and Wildlife Service, the FDA, or the CDC.9Animal and Plant Health Inspection Service. Bringing Live Animals and Germplasm Into the United States From Another Country
Radio and Communications
Federal law prohibits using radio transmission equipment without a license from the Federal Communications Commission.10Office of the Law Revision Counsel. 47 USC 301 – License for Radio Communication or Transmission of Energy This applies to businesses operating radio stations, two-way dispatch systems, or industrial wireless equipment.11Federal Communications Commission. Industrial / Business Licensing
Interstate Trucking
Businesses operating commercial vehicles in interstate commerce need a USDOT number from the Federal Motor Carrier Safety Administration. The requirement applies to vehicles with a gross weight rating over 10,000 pounds, vehicles carrying 16 or more passengers, and any vehicle hauling hazardous materials.12U.S. Department of Transportation Federal Motor Carrier Safety Administration. Who Needs to Get a USDOT Number? There is no charge for the number itself.
Environmental Permits
Businesses that discharge pollutants into waterways, emit air pollutants from industrial equipment, or generate hazardous waste may need permits under the Clean Air Act, Clean Water Act, or Resource Conservation and Recovery Act. The EPA administers these programs, though in many states permitting authority has been delegated to a state environmental agency.13U.S. EPA. About EPA Permitting Manufacturing, construction, auto body shops, dry cleaners, and chemical handling operations most commonly run into these requirements. If you’re unsure, contact your regional EPA office or state environmental agency before you start operations.
State Licenses: Professions, Sales Tax, and Trade Names
Professional and Occupational Licenses
Regulated professions in the United States are licensed at the state level, and most require formal postsecondary education or training as a prerequisite.14U.S. Department of Education. Professional Licensure Doctors, nurses, attorneys, architects, engineers, accountants, real estate agents, and many construction trades all fall into this category. The typical path involves completing an approved degree or apprenticeship program, passing a standardized exam, and applying through your state’s licensing board.
Contractors often face additional requirements like carrying a surety bond and maintaining liability insurance, which protect homeowners if the work goes wrong or the project is abandoned. Background checks are standard across most regulated professions, and boards routinely ask whether you’ve faced disciplinary action in another state.
Keeping a professional license current means more than paying the renewal fee. Most boards require continuing education credits on a one- or two-year cycle. Letting your license lapse, even accidentally, can mean repeating part of the application process or paying late penalties.
If you plan to practice in multiple states, check whether your profession participates in an interstate compact or a state reciprocity agreement. Terms vary widely by profession and by state.
Sales Tax Permits and Resale Certificates
If your business sells taxable goods or certain services, you need a sales tax permit, sometimes called a seller’s permit or sales tax license, from your state’s department of revenue. This authorizes you to collect sales tax from customers and remit it to the state. In most states, you must register before you make your first sale.
Once registered, you can typically obtain a resale certificate. This lets you buy inventory from suppliers without paying sales tax at purchase, since tax will be collected when you sell the item to the end customer. Suppliers keep your certificate on file, and misusing one to avoid tax on items you’re actually consuming in your business is a fast way to trigger an audit.
If you sell online and ship to customers in other states, you may owe sales tax in states where you’ve never set foot. Since the Supreme Court’s 2018 decision in South Dakota v. Wayfair, states can require remote sellers to collect sales tax once they exceed an economic activity threshold in that state. Most states set the threshold at $100,000 in annual sales or 200 transactions, though the numbers vary. An e-commerce business selling nationally could need sales tax registrations in dozens of states.
Registering a Fictitious Business Name
If you plan to operate under any name other than your own legal name (for a sole proprietorship) or the exact name on your articles of incorporation (for a corporation or LLC), you need to file a fictitious business name statement, commonly called a DBA (“doing business as”). This is typically filed at the county level, though some states handle it at the state level instead.
A DBA registration isn’t optional paperwork. Banks usually require proof of your DBA before they’ll open a business account under your trade name, and contracts with vendors and clients may need to reflect the operating name. Filing fees generally run between $10 and $150 depending on your jurisdiction, and some states require you to publish the fictitious name in a local newspaper. DBA filings typically need to be renewed every five to ten years.
Local Licenses: General Operating, Zoning, and Occupancy
Nearly every city and county requires a general business license, sometimes called a business tax certificate. This isn’t about proving you’re qualified to do your work. It registers your commercial activity with local government for tax and planning purposes. You typically apply through city hall or the county clerk’s office, and many jurisdictions now accept online applications.
Fees vary widely. Some municipalities charge a flat rate, while others base the fee on your projected gross receipts or number of employees. Expect to pay anywhere from $50 to several hundred dollars annually.
Zoning Approval
Before your local license is issued, the municipality needs to confirm that your business location is zoned for your type of activity. A retail store can’t open in a neighborhood zoned exclusively for residential use. This check usually happens as part of the license application, though some jurisdictions require a separate zoning clearance or land-use permit. If your proposed location doesn’t fit the current zoning, you may be able to apply for a variance or conditional use permit, though that process takes longer and isn’t guaranteed.
Certificate of Occupancy
If you’re moving into a new commercial space, building out a space for the first time, or changing how a building is used, you’ll likely need a certificate of occupancy before you can open. A CO confirms that the building meets fire, safety, and building codes for the way you intend to use it. New buildings always require one, and existing buildings need an updated CO when the type of occupancy changes. Many municipalities won’t issue your business license until the CO is in hand.
Home-Based Business Permits
Running a business from home doesn’t exempt you from local licensing. Most municipalities require a home occupation permit, with restrictions designed to make sure your business doesn’t change the residential character of the neighborhood. Common rules limit how much of your home you can dedicate to the business (often 25% of floor space), prohibit outside employees from working on-site, restrict signage, and cap customer traffic. Noise, odors, and frequent deliveries make problems more likely.
Homeowners associations add another layer. HOA covenants can be stricter than local zoning, and some flat-out prohibit commercial activity. Others allow quiet office-based work but draw the line at anything involving customer visits or employees. Check your HOA rules before you invest in a home occupation permit. The city approving your business doesn’t override a private covenant that forbids it.
Health Permits for Food Businesses
Food service businesses, from full-scale restaurants to food trucks and cottage bakeries, need health department permits before they can serve the public. The process typically starts with a review of your floor plan showing kitchen layout, refrigeration placement, handwashing stations, and waste disposal. After plan approval, a health inspector visits the physical location before you open.
Health inspections aren’t a one-time event. Most jurisdictions conduct unannounced follow-up inspections on a regular cycle. Violations can result in fines, mandatory closures until problems are corrected, or permanent revocation of your permit. Budget time for this process: the gap between submitting your floor plan and passing your first inspection can stretch to several months.
Keeping Your Licenses Current
Getting your licenses is the starting line, not the finish. Most business licenses renew annually, and professional licenses often renew on a two-year cycle. Missing a renewal deadline usually triggers late fees, and in some cases your license simply expires, meaning you’re technically operating illegally until you sort it out.
Many jurisdictions require you to display your business license in a location visible to the public, typically near the entrance. The specifics vary, but the principle is the same: customers and inspectors should be able to confirm you’re licensed without having to ask.
Build a calendar of every renewal date across all your licenses and permits. A single-location business might hold a general business license, a professional license, a sales tax registration, a health permit, and a DBA filing, each with its own renewal cycle and fee. Letting any one of them lapse because you lost track of the date is the kind of avoidable mistake that can snowball into fines or forced closure.