To find your business license number, start with the license certificate the city, county, or state agency issued when they approved your application — the number is printed near the top, usually right next to your business name. If you can’t put your hands on the certificate, the same number is stored in the online account you used to apply, and the agency that issued the license can look it up for you by phone or in person.
Check the Certificate and Related Paperwork
The physical or PDF certificate is the fastest place to look. The number sits near the top of the document, close to your business name and address. If you filed online, the agency may have emailed a digital copy or posted one in your account portal, so check your email archive along with any filing cabinet or cloud folder where you keep government paperwork.
The same number shows up on documents that reference the license. Renewal notices, payment receipts from prior years, and letters from the issuing office usually print it. Approval letters for related permits tied to the same license often carry it too. Spend five minutes going through those before you start searching websites or making calls.
Use the Issuing Agency’s Online Lookup
Most licensing agencies run an online database where you can retrieve your license details. Which website depends on which level of government issued the license. For a city license, start with the city clerk or business licensing department. For a county license, try the county clerk or revenue office. State licenses are typically handled by the Secretary of State, the Department of Revenue, or a specialized licensing board for your industry.
Once you’re on the right site, look for a link labeled something like “Business Search,” “License Lookup,” or “Verify a Business.” These tools generally let you search by business name, owner name, or address, and some accept a partial license number if you remember part of it. If you created an account when you applied, logging back in should pull up the full record, including the number, issue date, and expiration date.
The SBA recommends visiting your Secretary of State’s website as a starting point to identify which licenses and permits your business holds and where they were issued.1U.S. Small Business Administration. Apply for Licenses and Permits That office may not have issued your local license directly, but it can point you to the correct local agency.
Call or Visit the Agency
When the online search comes up empty, calling the office that issued your license is the most reliable fallback. Have your business name, address, and the owner’s name ready. Many agencies will also ask for your Employer Identification Number or the owner’s Social Security number to verify your identity before releasing license details. If you can give the approximate date you first applied or your most recent renewal year, that helps the clerk narrow the search.
An in-person visit works too, especially for city and county offices that handle licensing at a single counter. Bring a government-issued photo ID and any business formation documents you have. The clerk can usually pull up your record on the spot and print a copy of the license. Some jurisdictions charge a small fee for a certified duplicate, so ask about the cost when you call ahead.
Federal Licenses Are Separate
If your business operates in a federally regulated industry, you may hold a federal license on top of your local one, and the number on that federal license comes from a different agency. You won’t find it by searching your city or state database. The SBA identifies several activities that require federal licensing:1U.S. Small Business Administration. Apply for Licenses and Permits
- Alcohol manufacturing, wholesale, or import — Alcohol and Tobacco Tax and Trade Bureau
- Firearms, ammunition, and explosives — Bureau of Alcohol, Tobacco, Firearms and Explosives
- Radio and television broadcasting — Federal Communications Commission
- Aviation and aircraft operations — Federal Aviation Administration
- Commercial fishing — National Oceanic and Atmospheric Administration Fisheries Service
- Agriculture imports and interstate transport — U.S. Department of Agriculture
- Nuclear energy production — U.S. Nuclear Regulatory Commission
To retrieve a federal license number, contact the issuing agency directly or log into the account you used when you applied. Some agencies offer online verification. The ATF runs an FFL eZ Check system that lets firearms licensees verify license numbers and expiration dates at fflezcheck.atf.gov.2Bureau of Alcohol, Tobacco, Firearms and Explosives. FFL eZ Check Application
Getting a Replacement if the License Is Gone
If you’ve lost the certificate entirely and can’t find the number through an online portal, most issuing agencies will provide a duplicate. The process varies, but it generally involves submitting a request to the office that issued the original. Some agencies accept the request online or by mail; others require an in-person visit. You’ll need to verify your identity and business ownership, and some jurisdictions require a signed affidavit stating that the original was lost or destroyed.
Fees for a duplicate are usually modest, somewhere between a few dollars and around $15 in most places, though they vary. Turnaround depends on the agency: some print replacements on the spot, others mail them within a few weeks. Once the replacement arrives, scan it and store a digital copy in a cloud folder so you won’t have to repeat the process.
Make Sure It’s Actually the Right Number
Business owners juggle several identification numbers, and mixing them up causes real problems on applications and tax forms. The business license number is assigned by a local or state licensing authority and proves you’re authorized to operate in that jurisdiction. It is not the same as any of these:
- Your Employer Identification Number (EIN), a nine-digit number assigned by the IRS. It functions as your business’s Social Security number for federal tax purposes and is used to file taxes, hire employees, and open a bank account.3U.S. Small Business Administration. Get Federal and State Tax ID Numbers
- Your state tax identification number, issued by your state’s Department of Revenue or equivalent for state tax filings like sales tax or employer withholding. Some states use your EIN as the state tax ID; others assign a separate one.
- Your entity registration number, assigned by the Secretary of State when you file articles of incorporation or organization. This confirms your business entity exists as a legal structure but does not authorize you to conduct a specific business activity.
When a bank, landlord, or vendor asks for your business license number, they want the one tied to your operating permit, not your EIN or entity number. If a form asks for several identifiers, read the labels carefully. Submitting the wrong number can delay account openings, contract approvals, and permit applications.