To file a DBA, you register the name you plan to do business under with the government office your state designates — usually the Secretary of State, a county clerk, or in a few states a city or town office — by submitting a short application, paying a filing fee, and, in a handful of states, publishing a notice in a local newspaper. The specifics change by jurisdiction, but the sequence is the same everywhere: confirm the name is available, complete the form, pay, and complete any publication step before the deadline runs out.
Who Needs to File
The general rule is simple. If you conduct business under any name other than your legal name, you need a DBA. For a sole proprietor named Maria Chen who sells candles as “Golden Hour Candles,” the name triggers the requirement. Selling candles as “Maria Chen” does not.
LLCs and corporations need a DBA when they operate under a name that differs from what’s on their formation documents. Three common situations:
- Dropping the entity designation. If your LLC is registered as “Bright Path Consulting LLC” but your signs and invoices read “Bright Path Consulting,” the missing “LLC” makes it a different name that requires a filing.
- Running multiple brands under one entity. A single LLC that owns three restaurants with different names files a DBA for each.
- Franchise operations. A franchisee who forms “TRE Holdings LLC” but operates under the franchisor’s brand needs a DBA for that brand.
About a dozen states, including Alaska, Arizona, Delaware, Hawaii, Kansas, and Mississippi, have no DBA filing requirement at all. In those states you can operate under an assumed name without any government registration, though you’ll still want documentation for banking.
Where to File
There is no federal DBA registration. Every filing happens at the state or local level, and the correct office depends on your state. Most states route DBA registrations through the Secretary of State. About 19 states, including California, New York, Texas, and Illinois, require county-level filing either instead of or in addition to state filing. Three states — Maine, Massachusetts, and Rhode Island — require filings at the city or town level.
Sole proprietorships and general partnerships are most often directed to the county clerk. LLCs and corporations more often file with the state. Check your state’s requirements before you start. Filing in the wrong office means your registration may not count.
What to Prepare Before You File
Applications are short, but filing offices reject incomplete forms without hesitation. You’ll typically need:
- The exact fictitious name you plan to use.
- Your full legal name if you’re a sole proprietor, or the legal entity name and formation state if you’re filing for an LLC or corporation.
- A physical business address. Most offices won’t accept a P.O. box because the address must accept legal service of process.
- Your business structure: sole proprietorship, partnership, LLC, or corporation.
- The date you began or plan to begin using the name.
You’ll sign under penalty of perjury, so the information carries legal weight. Listing an individual owner where an entity should appear (or vice versa) changes who carries liability, and it’s the kind of error the office won’t catch for you.
Check the Name First
Before submitting, search the filing office’s database to confirm no one else has already registered the same name in your jurisdiction. Most Secretary of State and county clerk sites offer free online search tools. Passing a name-availability check only means the name isn’t currently registered in that specific office. It doesn’t screen for trademark conflicts, and it doesn’t stop someone else from filing the same DBA later.
Watch for Restricted Words
Words like “Bank,” “Insurance,” “University,” “Trust,” and “Credit Union” are restricted in most states because they imply a licensed financial institution or accredited school. Using them generally requires prior approval from the relevant state regulator. Words implying a government affiliation are also off-limits unless the affiliation is real. If your proposed name contains any of these terms and you don’t hold the corresponding license, expect a denial.
Fees and Publication
Government filing fees for a new DBA range from about $10 to $150, with most states charging between $20 and $50. Some states set a flat statewide fee; others let counties set their own. A few charge per-owner fees when multiple people are listed on the same registration. Online filing sometimes carries a different fee than paper.
Most states do not require newspaper publication. About seven do, including California, Georgia, Illinois, Minnesota, Nebraska, and Pennsylvania. Florida asks applicants to certify they’ve advertised but doesn’t require proof of publication.
Where publication is required, the rules vary:
- California requires publication once a week for four consecutive weeks.
- Illinois requires three weekly publications within a tight window after filing.
- Georgia requires two weekly publications.
The notice runs in a newspaper of general circulation in the county where the business operates. You then file a proof-of-publication affidavit with the same office that processed your registration, usually within 30 to 50 days after the final notice runs. Publication costs generally run $30 to $100 or more, depending on the paper. Skip the publication step in a state that requires it and the filing office may void your registration, leaving you with a paid fee and no valid DBA.
What the Filing Unlocks
Once the certificate is issued, two practical doors open.
The first is banking. Banks generally require a fictitious name certificate or equivalent DBA documentation before they’ll let you deposit checks or process payments under a name that doesn’t match your legal identity. A sole proprietor named James Park operating as “Park City Plumbing” needs the DBA to cash a check made out to the business.
The second is contracts. Signing agreements under your DBA leaves a public record linking that name to you or your entity. In some states, contracts signed under an unregistered assumed name may still be enforceable, but a dispute becomes harder than it needs to be.
Notify the IRS of the Name
Registering a DBA does not change your federal tax obligations and does not require a new Employer Identification Number. A new EIN is required when your structure changes, not when the name changes.1Internal Revenue Service. When To Get a New EIN
You do need to tell the IRS about the name. Sole proprietors write to the IRS at the address where they file their return. Corporations check the name-change box on Form 1120 (or 1120-S for S corporations) if filing a current-year return, or write to the IRS if the return has already been filed. Partnerships do the same using Form 1065.2Internal Revenue Service. Business Name Change The notification must be signed by the business owner, a corporate officer, or a partner, depending on the entity.
Renewal and Abandonment
DBA registrations don’t last forever. The most common expiration is five years from the filing date, but some jurisdictions require annual renewal, some allow ten years, and a handful of states issue registrations that never expire. If your registration lapses, the name becomes available for others to claim, and your bank may freeze the account tied to it.
Renewal forms generally mirror the original application and require your existing registration number. Fees are typically comparable to the initial filing. Grace periods are uncommon, so tracking your expiration date is on you.
When you stop using a DBA, filing a formal statement of abandonment with the same office that processed the original registration keeps the public record accurate. In states that required publication for the initial filing, abandonment may also require publication. If you skip this step, your name stays linked to the DBA in public records until the registration expires on its own.
What a DBA Filing Does Not Do
A DBA does not protect the name. Multiple businesses in the same state can register the same DBA, and the filing gives you no exclusive right to use it. Trademark law, not DBA law, governs who owns a brand name. A state trade-name registration gives you the right to conduct business under that name in that state; it does not stop anyone else from using the same name, and it does not protect your brand if you expand across state lines.3United States Patent and Trademark Office. Trademark or Trade Name?4U.S. Small Business Administration. Choose Your Business Name If protecting your brand matters, look at federal trademark registration with the U.S. Patent and Trademark Office, which grants nationwide rights and the ability to enforce them in federal court.5United States Patent and Trademark Office. Why Register Your Trademark?
Skipping DBA registration where it’s required is a separate problem. In many states, a business that hasn’t registered its DBA may be barred from filing or maintaining a lawsuit until it complies. Some states also block enforcement of contracts made under the unregistered name. Penalties can include civil fines. Failure to register generally doesn’t invalidate the contracts themselves or stop someone from suing you — it just cuts off your ability to go on offense in court under the business name until the paperwork is right.