To get a DBA certificate, choose an available fictitious business name, file an application with the county clerk or state agency that handles trade name registration where your business operates, pay the filing fee, and — if your state requires it — publish notice of the filing in a local newspaper. The office issues a certified copy of the certificate once everything is approved, and that document is what banks and courts will ask to see.
Do You Need to File One
Whether you need a DBA turns on your business structure and the name you plan to use. A sole proprietor who operates under anything other than their full legal name needs one. If your name is Jane Smith and you want your bakery to be called Sunrise Pastries, that name has to be registered. The same applies to a general partnership using a name other than the combined legal names of the partners.
LLCs, corporations, and limited partnerships may also need a DBA when they want to do business under a name different from the one on their formation documents. An LLC registered as Smith Holdings LLC that wants to run a retail store called Main Street Books would file a DBA for the retail name. A business operating under its exact registered legal name does not need a DBA at all.
Where you file depends on your location. Some states handle DBA registration through the secretary of state’s office. Others require you to file with the county clerk in the county where the business operates. A few states don’t require the registration at all, so start by checking which office in your state accepts the filing.
Pick a Name That Will Be Accepted
The name you choose has to pass review before it can be registered. Most jurisdictions prohibit words like “Incorporated,” “Corporation,” “LLC,” or “Limited” unless the business has actually filed the corresponding formation documents. The rule keeps the public from believing a business has liability protections it doesn’t have.
Other words are restricted because they imply government affiliation or professional licensing. Terms like “Bank,” “Insurance,” and “University” typically require written approval from the relevant regulator before you can include them. The specific restricted words vary by state, so check your filing office’s guidelines before you get attached to a name.
Search the records at the office where you plan to file — county clerk or secretary of state — to confirm no other business is already using the same or a confusingly similar name. If you pick a name that’s already taken, your application will be rejected, and you’ll likely pay a new filing fee when you resubmit.
Gather Your Information Before You File
A DBA application asks for a limited set of details. Requirements vary, but expect to provide:
- The full legal name of every owner or partner.
- A physical street address where the business operates. P.O. boxes are generally not accepted because the address has to be usable for legal service of process.
- The form of the business: sole proprietorship, general partnership, LLC, corporation, or trust.
- A brief description of what the business does, which the filing office uses to categorize the enterprise and confirm it meets local zoning or licensing rules.
Some jurisdictions also ask for a Social Security number or an Employer Identification Number. A sole proprietor with no employees who doesn’t already have an EIN can generally use their SSN. The IRS treats a sole proprietor as needing only one EIN regardless of how many trade names they operate under, so adding a DBA does not require a new EIN if you already have one. If you do apply for an EIN, enter your DBA as the “trade name” on line 2 of Form SS-4.1Internal Revenue Service. Instructions for Form SS-4 (12/2025)
Get the forms from your county clerk’s office or the state filing portal. Enter every field exactly as it appears on your legal identification. Discrepancies between the application and your ID can delay processing or force you to resubmit with an additional fee. Some offices require your signature to be notarized before submission, so read the instructions on the official filing portal ahead of time.
How to File and What It Costs
Most filing offices accept applications in person, by mail, or through an online portal. Online filing is typically the fastest route, with instant confirmation and electronic payment by credit or debit card. If you file by mail, you’ll send the signed application with a check or money order for the exact fee — an incorrect payment will cause the application to come back unprocessed.
Government filing fees for a DBA generally run from about $10 to $150, depending on the state and county. Some jurisdictions charge additional fees per owner listed on the application. If notarization is required, add a small notary fee, usually under $15 per signature for an in-person notarization. Certified copies of the certificate, which you’ll need to open a bank account, may carry a separate charge of $5 to $15 each.
Processing times run from same-day, at offices that issue certificates on the spot, to several weeks for mailed applications. Once approved, you’ll receive a certified copy of your DBA certificate. That document is your official proof that the business name is registered and linked to your legal identity. Banks typically require it before they’ll open a business checking account under the DBA name.2U.S. Small Business Administration. Register Your Business
Publish Notice If Your State Requires It
Some states require you to publish your DBA filing in a newspaper of general circulation in the county where the business operates. The notice puts the community and any potential creditors on notice about who is behind the business name. Not every state requires this step, so confirm with your filing office whether it applies to you.2U.S. Small Business Administration. Register Your Business
Where publication is required, it typically has to begin within 30 to 45 days of your filing date. The notice usually runs once a week for four consecutive weeks. After the cycle is complete, the newspaper provides a proof-of-publication affidavit. You then file that affidavit with the same government office that issued your DBA certificate. Some newspapers submit it for you; others leave it to you to file manually.
Publication costs generally fall between $30 and $150, depending on the newspaper’s rates and the length of the notice. Missing the publication window can void your DBA registration, so treat the deadline as firm if your jurisdiction requires it.
Keep the Registration Current
A DBA doesn’t last forever. Most states set an expiration period, and five years is the most common. Some states require renewal every two or three years. A few have no renewal requirement at all. Where renewal is required, file the renewal application and pay the fee before the expiration date. Letting it lapse means starting over with a new filing.
You also need to update the DBA when certain details change. Moving to a new business address, adding or removing an owner, or making other significant changes to the original information usually requires an amendment or a new statement. Keeping the record current matters if you later need to enforce a contract or respond to legal proceedings under the business name.
What a DBA Certificate Does Not Do
A DBA is a registration, not a business structure. Filing one does not create a separate legal entity, and it does not shield your personal assets from business debts the way an LLC or corporation would. A sole proprietor with a DBA is still the same legal person as the business, and creditors can reach personal bank accounts, a home, and other assets to satisfy business obligations.
A DBA also does not give you exclusive rights to the name. Unlike a federal trademark, which protects a brand name nationwide, a DBA puts the public on notice that you’re operating under the name in your filing jurisdiction. Another business in a different county or state can use the same name without violating your registration. If protecting the brand matters, a separate trademark application through the U.S. Patent and Trademark Office is the route.
Filing a DBA does not change how your business is taxed either. A sole proprietor with a DBA still reports business income and expenses on Schedule C of a personal tax return, with the DBA entered as the business name on line C.3Internal Revenue Service. Topic No. 407, Business Income The IRS looks at the underlying business structure, not the trade name, to determine tax treatment, and you don’t need a new EIN solely because you registered a DBA.4Internal Revenue Service. When to Get a New EIN
Risks of Skipping the Filing
Running a business under an unregistered name carries real legal exposure. In many states, a business that hasn’t filed its DBA cannot bring a lawsuit or enforce a contract in court until the registration is completed. If a customer refuses to pay, you may be unable to take action until you go back and file the paperwork.
Some states also impose fines for operating without a registered fictitious name, and the amounts add up over time. Failing to disclose who is behind a business name can also add to your personal exposure, since courts are less inclined to extend the benefit of the doubt on business formalities when the basic registration requirement hasn’t been met.