Business licenses and permits come from three levels of government — federal, state, and local — and most businesses need something from at least two of them before opening the doors. The exact combination depends on what you do, where you do it, and how your business is structured. Getting them right matters for the obvious reasons (fines, forced closure) and one that catches owners by surprise: in many states, an unlicensed business cannot sue to collect on its own contracts.
Work through the layers in order. Federal first (most small businesses skip this entirely), then state, then local. Zoning gets checked before you sign any lease.
Federal Licenses: Only If Your Industry Is Regulated
Most retail shops and service businesses never deal with a federal license. Federal permits apply only when your activity falls under a specific federal agency’s jurisdiction, usually because it crosses state lines, affects public safety, or touches the environment. The U.S. Small Business Administration maintains the list of regulated categories, which includes broadcasting, alcohol production, firearms, aviation, agriculture, commercial fishing, mining, nuclear energy, and interstate transportation.
A few of the common ones:
- Radio, television, and satellite transmission require a license from the Federal Communications Commission. Operating transmission equipment without one is illegal under the Communications Act of 1934.1Federal Communications Commission. Communications Act of 1934
- Dealing in, manufacturing, or importing firearms requires a federal firearms license from the Bureau of Alcohol, Tobacco, Firearms and Explosives. A standard dealer license costs $200 to apply and $90 to renew every three years. Explosives are handled through a separate ATF license.2Bureau of Alcohol, Tobacco, Firearms and Explosives. Federal Firearms Licenses3Bureau of Alcohol, Tobacco, Firearms and Explosives. Federal Explosives Licenses and Permits
- Alcohol manufacturing, wholesaling, and importing go through the Alcohol and Tobacco Tax and Trade Bureau. There is no federal application fee, but you must qualify with TTB before operating.4TTB: Alcohol and Tobacco Tax and Trade Bureau. Qualify with TTB
- Interstate trucking and commercial passenger transport require registration with the Federal Motor Carrier Safety Administration and a USDOT number. The threshold is any vehicle over 10,001 pounds, or one designed to carry more than eight passengers for pay.5Federal Motor Carrier Safety Administration. Do I Need a USDOT Number?
- Environmental permits from the EPA cover discharges into waterways (NPDES permits under the Clean Water Act, valid up to five years), hazardous waste handling, and significant air emissions.6US EPA. NPDES Permit Basics7US EPA. EPA Permit Programs and Corresponding Environmental Statutes
- Importing plants or moving animal products across state lines requires a USDA APHIS permit, valid up to three years and issued after a facility inspection.8eCFR. Permit Requirements
If none of this describes you, move on. Federal licensing is the layer most new owners can skip.
State Registration, Tax Permits, and Professional Licenses
Almost every business touches the state layer. There are three pieces to think about.
Entity Formation and Name Registration
If you form an LLC or corporation, you file formation documents with your state’s secretary of state. LLCs file articles of organization; corporations file articles of incorporation.9U.S. Small Business Administration. Register Your Business Filing fees usually run from about $50 to $300, though a few states charge more; Massachusetts charges over $500 for an LLC, while Colorado and Iowa charge $50.
A sole proprietorship or partnership operating under any name other than the owner’s legal name usually needs a “doing business as” filing. Some states handle this at the county level, some at the state level, and some at both. You cannot register a DBA with a corporate suffix like “Inc.” or “LLC,” because that would misrepresent your business structure.
Sales Tax Permit
If you sell taxable goods or services, you need a sales tax permit from the state revenue department. In most states the permit itself is free when you register online. The expense to watch for is a security deposit or surety bond, which some states require (sometimes several thousand dollars) if you have no prior sales tax history there.
Professional and Occupational Licensing
Regulated professions — medicine, law, accounting, engineering, plumbing, cosmetology, and many more — require a license from a state board. Boards verify your education, exam results, and sometimes supervised experience. Renewal fees typically run $50 to over $600, with cycles of one or two years. Practicing without a valid license can mean civil penalties, criminal charges, and losing the right to practice altogether.
If you work across state lines, check whether your profession is in an interstate licensing compact. As of early 2026, compacts cover nurses, physical therapists, psychologists, social workers, counselors, EMS personnel, teachers, and more than a dozen other professions. A compact license lets you practice in member states without applying separately in each.
Local Permits: What the City and County Require
Even with your federal and state paperwork in order, the city or county still has to say yes.
General Business License
Most municipalities require a general operating license, sometimes called a business tax receipt, for any business inside city limits. Fees are usually tied to employee count, revenue, or square footage. Skipping this one typically triggers daily fines, and persistent violations can produce a court order barring you from operating.
Health, Fire, and Certificate of Occupancy
Food service businesses need health department permits, which involve inspections of food handling, sanitation, storage temperatures, and equipment. Renewals are periodic and surprise inspections are standard.
Before you occupy a commercial space, you generally need a certificate of occupancy confirming the building meets local building codes, fire safety standards, and zoning for your intended use. Getting one usually requires passing inspections for fire safety, electrical, plumbing, HVAC, and any mechanical systems. A new certificate is also required when a building changes use (warehouse to restaurant, for example) or after major renovations.
Signage and Public Space
Exterior signs typically need a permit confirming they meet local rules on size, placement, height, and lighting. If you use public space — sidewalk seating for a café, for instance — that is a separate permit. Municipalities enforce both aggressively because violations are visible from the street.
Home-Based Business Permits
Running a business from home usually requires a home occupation permit, with restrictions designed to keep residential blocks residential. Typical conditions cap the business at 25% to 40% of your home’s floor area, allow no more than one non-family employee, prohibit exterior signage beyond a small nameplate, limit or bar customer foot traffic, and require that inventory and equipment stay out of view from the street. Fees are usually modest, often under $200.
Check Zoning Before You Sign the Lease
Zoning law decides where your business can operate. Local ordinances divide land into residential, commercial, industrial, and mixed-use categories, and each category restricts the types of business allowed. Verify a property’s zoning classification before you sign a lease or buy. A landlord’s assurance that “plenty of businesses operate here” is worthless if your specific use isn’t permitted in that zone.
When your business doesn’t fit the existing zoning, there are two paths, and they are not interchangeable.
Conditional Use Permit
A conditional use permit covers activities that the zoning ordinance already contemplates for the district but allows only under certain conditions. You don’t have to prove hardship; you show that your proposed use meets the conditions in the ordinance. Many codes allow daycare centers in residential zones as a conditional use if parking and noise standards are met.
Variance
A variance is permission to deviate from the ordinance itself, and the bar is much higher. You must show that a unique physical feature of the property — unusual topography, an oddly shaped lot, proximity to wetlands — creates an unnecessary hardship under strict enforcement. Boards will reject applications where the hardship is financial (you want a more profitable use), personal (owner’s preferences or circumstances), or self-created (you built something that violates the rules and now want an exception).
Either path usually involves a public hearing where neighbors can raise concerns about traffic, noise, and parking. Build the timeline into your opening plans.
What Happens If You Operate Without the Right Licenses
The obvious consequences are fines and shutdown orders. Jurisdictions typically start with financial penalties that escalate over time, add back taxes and late fees, and move to cease-and-desist orders or an injunction forcing you to close. In some places, operating without a required license is a criminal offense. Some licensing authorities can also make you give back all profits earned during the unlicensed period, a remedy called disgorgement.
The consequence that surprises people is contract enforceability. In many states, a contract performed by an unlicensed business is treated as unenforceable. If a customer refuses to pay, you may not be able to sue for the money, and courts can raise the issue on their own even if the customer never does. The logic: if proving your case requires showing you performed work that legally required a license you didn’t have, the court won’t help you collect.
How harsh this gets depends on the state. Some impose an absolute bar on recovery by unlicensed contractors regardless of what the other side did. Others let you recover documented out-of-pocket costs but not profits. In a few, the customer can sue you to recover everything they already paid. The license isn’t just paperwork. It’s what gives your contracts teeth.
Documents to Gather Before You Apply
Missing documents are the single most common reason applications stall or get rejected. Pull these together first.
Employer Identification Number. Almost every license application asks for an EIN from the IRS. You need one if you hire employees, operate as a partnership or corporation, or pay sales and excise taxes.10Internal Revenue Service. Get an Employer Identification Number It’s free, and the online application at IRS.gov issues the number immediately during business hours. Sole proprietors can technically use a Social Security number on some filings, but an EIN keeps your SSN off business paperwork.
Formation documents. Have your articles of incorporation or organization ready, along with any operating agreement or bylaws.11U.S. Small Business Administration. Register Your Business – Section: File State Documents and Fees
Business details. Legal business name, physical address (not a P.O. box), names of owners or officers, and a description of your planned activity.
Supporting proof. Professional licenses need proof of education, exam scores, or supervised hours. Health and occupancy permits may need building floor plans and equipment specifications.
Applications, Display Rules, and Renewals
Most licensing agencies accept applications through online portals, though smaller municipalities may still require paper forms by mail or in person. Fees are due at submission and vary widely: some local permits cost under $50, while complex federal or professional licenses can exceed $1,000. Processing ranges from same-day for simple registrations to several months for licenses requiring inspections, background checks, or public hearings. Agencies usually issue a receipt proving your application is pending.
Some jurisdictions require you to display your license at your place of business. Check the specific permit conditions, because display rules vary by license type and location.
Renewals are where good businesses get tripped up. Most licenses renew annually or biennially, and you should not assume a grace period. Some jurisdictions treat a license as lapsed the day after expiration, even if your renewal is one day late. Others allow a brief late window with a penalty. Penalties escalate fast: late fees and back taxes first, then potential suspension of your right to operate. Some boards cancel an expired license outright and require you to reapply from scratch, which can mean retaking exams or resubmitting every supporting document. Set reminders 60 to 90 days before expiration, because processing itself eats into your window.