Do You Need a License or Certification to Start Your Business?

By Bill Stilwell · Last reviewed October 16, 2026

The short answer

List what you need to know and what the law says you must hold before you can legally do the work. Many trades need a state license, and some need hours of supervised experience before you can even apply. States set most occupational license rules, so check your own state before you sell anything.

What this means

There are four things to check.

Skills. Can you do the work well, start to finish, without help?
Licenses. A license is permission from the government to do certain work. If your work needs one, doing it without one can be illegal.
Certifications. A certification usually comes from a trade group or maker. It shows training but isn’t always required by law.
Supervision and experience. Some licenses require a set number of hours working under a licensed person first.

Say Ana is a skilled stylist who wants to open a salon. She’ll likely need a personal license, and her state may also require a separate license for the shop. An electrician who wants to go out on his own may need a contractor license on top of his journeyman license. Rules differ by state and trade.

The CareerOneStop site, sponsored by the U.S. Department of Labor (DOL), says state governments set licensing rules, so they differ from state to state. Its License Finder tool shows the requirements by state.

Why it matters

Working unlicensed can bring fines or stop-work orders, depending on your state and trade.
Contracts can be at risk. In some states, an unlicensed contractor may have trouble collecting payment. Ask an attorney how this works where you are.
Insurance may not pay. Insurers often ask about licenses. Work outside your license may not be covered.
Listings and ads can be pulled. Some ad programs check licenses (see 20.5 Local Services Ads).
Customers check. Many people look up a license number before they hire.

Who this applies to

Everyone should check, even if you think your work isn’t licensed. It matters most for construction and home repair, electrical, plumbing, heating and cooling, cosmetology and barbering, massage, health care, food, child care, real estate, insurance, and financial services.

If your field truly has no license, you still need the skills, and the check takes less than an hour.

How to do it

Write down exactly what you’ll sell. Be specific. “Remodeling” and “electrical work” can need different licenses.
Use the CareerOneStop License Finder to see which licenses your state lists for that work.
Go to your state licensing board’s site and read the actual rules. The board is the final word, not a third-party site.
Check whether a federal agency regulates your activity. The Small Business Administration (SBA) lists examples like alcohol, firearms, aviation, and commercial fishing (see 9.5.1 Federal Permits).
Check city and county rules too. Some local governments license trades like plumbing or construction (see 9.2.3 City Registration and Permits).
Note what each license needs: exam, training hours, supervised experience, bond, insurance, and fees.
Write an honest skills list. Mark what you can do alone, what you need practice on, and what you’ll hire out.
Make a plan and timeline for any license or training you still need. Don’t advertise that work until you hold the license.
Record every license number and renewal date in your Master Business Record (see 5 Master Business Record and 9.5.6 License and Permit Renewals).

What proof to keep

Copies of each license and certification
A screenshot of the state board’s lookup showing your license as active
Training certificates and logs of supervised hours
A dated note if you checked and found no license is required, with the page you checked

Store these in your licenses folder. You’ll need them for insurance, bids, and your profile credentials (see 14.1.10 Credentials).

Common mistakes

Trusting a forum post. Always confirm with the state board.
Doing “just a little” licensed work. Small side jobs can still need a license.
Assuming one state’s license works in another. Licenses usually don’t cross state lines.
Mixing up certification and license. A certificate from a course doesn’t replace a state license.
Missing the business license. Some trades need both a personal license and a business or contractor license.
Letting a license lapse. Put renewal dates on your calendar now.

When to get help from a pro

State licensing board: call them if the rules are unclear. Ask:

Does this exact service need a license in this state?
Do I need a separate license for the business, or only for me?

Attorney: if you’re unsure whether you can do certain work under your license, or you plan to work in more than one state.

Industry adviser: for regulated fields with complex rules (see 6.3.6 Industry Adviser).

Bill’s note

[Bill: add a short story or opinion here. For example, what you checked for SiteSmarty, or a client in a licensed trade who had to change their services or ads because of a license limit.]

How I did this for SiteSmarty

[Date I did this:]
[What I actually did, step by step: which sites I checked and what they said about my field]
[What it cost and how long it took:]
[What surprised me or what I’d do differently:]
[Screenshot or photo to add, with private info blurred: the License Finder or state board result for my work]
[Result so far:]

Questions people ask

How do I know if my business needs a license? Check the CareerOneStop License Finder, then confirm on your state licensing board’s site. Check your city and county too.

Is a certification the same as a license? No. A license is legal permission from the government. A certification shows training and may or may not be required.

Can I start my business before I get licensed? You can plan, set up accounts, and build your website. Don’t sell or advertise licensed work until you hold the license.

Does my license work in another state? Usually not. Check with the board in each state where you plan to work.

Audit check

Question: Has the owner confirmed, with the state board, every license the business and owner need, and are they all active?
Pass looks like: A dated list of required licenses with numbers, active status, and renewal dates, or a dated note showing no license is required, plus an honest skills list.
Fail looks like: No check made. Licensed work advertised without a license. Expired licenses. A course certificate used in place of a license.
Evidence to collect: License copies, board lookup screenshots, and the dated check record.

Where this fits

Do this first: 6.1.3 Time Availability

Do this next: 6.1.5 Employment Restrictions

Sources

CareerOneStop, sponsored by the U.S. Department of Labor, "Do you need a license?" (checked October 16, 2026)
U.S. Small Business Administration, "Apply for licenses and permits" (checked October 16, 2026)

This page explains general rules and Bill's own experience. It is not legal, tax, or insurance advice. Talk to a qualified professional about your situation.