A “doing business as” name, commonly shortened to DBA, is an administrative registration that lets you operate a business under a name that isn’t your own legal name or your company’s registered name. You may also see it called an assumed name, fictitious name, or trade name depending on the state. The filing links a public-facing name to the person or entity behind it. It does not create a new business, does not protect your personal assets, and does not give you exclusive rights to the name.
What a DBA Does and Doesn’t Do
The filing connects a business name to a legal owner. If Maria Lopez wants to sell baked goods as “Sunrise Bakery,” a DBA tells the government and the public that Maria Lopez is the person responsible for that business. For an LLC or corporation, the DBA plays the same role when the operating name differs from the one on the formation documents.
Two limits matter. First, a DBA is not liability protection. A sole proprietor with a DBA still has unlimited personal exposure for business debts and lawsuits, exactly as if nothing had been filed. If you want your personal assets shielded, you need to form an LLC or corporation; the DBA only changes the name on the storefront.
Second, a DBA does not give you ownership of the name. In most states, more than one business can register the same DBA, and the registration will not stop anyone else from using it. Exclusive rights to a business name come through trademark, which is a separate process discussed below.
Who Needs to File
Sole proprietors and general partnerships generally need a DBA whenever the business name doesn’t include the full legal surname of every owner. If you and a partner named Chen open “Apex Advisors,” neither surname appears, so most states require a filing. “Lopez & Chen Consulting” would likely be fine without one.
LLCs and corporations need a DBA when they transact business under any name that differs from the one on their articles of organization or incorporation. A company registered as “Greenfield Holdings LLC” launching a retail brand called “Meadow & Co.” would file a DBA for the retail name.
Requirements vary by state, county, and municipality, and a few states don’t require DBA registration at all. Filing typically happens at the county clerk’s office or the Secretary of State’s office, depending on your location and business structure.1U.S. Small Business Administration. Register Your Business
How to File
Check Name Availability First
Search your state’s registry, usually through the Secretary of State’s website, before you commit to a name. This search only covers names registered in that state and won’t reveal federal trademark conflicts, which are a separate concern.2U.S. Small Business Administration. Choose Your Business Name
Fill Out the Application
The form, often titled an “Assumed Name Certificate” or “Fictitious Name Statement,” asks for your legal name, the proposed business name, your physical business address, a brief description of the business, and whether operations have already started. Partnerships list every partner’s legal name and address. These filings are public records; that’s the whole point.
Most jurisdictions let you submit online, by mail, or in person. Fees vary widely: some states charge as little as $5, others go up to $150, and most fall in the $20 to $50 range. Banks and landlords routinely ask for a certified copy of the filing, which usually adds $5 to $30. Errors in the owner’s name or business address can get your application rejected, and most jurisdictions don’t refund the filing fee. If you operate in more than one county, some states require a separate filing in each.
Publish Notice if Your State Requires It
Several states require you to publish notice of the fictitious name in a local newspaper. Some ask for a single weekly notice over two consecutive weeks; others require three or four weeks, and a few require publication in two different papers. Publication typically costs $30 to $150 total. Where it’s required, it isn’t optional: some states cancel the DBA if you don’t file proof of publication within 30 to 50 days of registration. After publication runs, you file a publisher’s affidavit with the recording office to finalize the registration.1U.S. Small Business Administration. Register Your Business
Banking and Taxes
If your business name doesn’t include your legal last name, banks will want a certified copy of the DBA filing before opening a business account under that name. Most accept a fictitious name certificate, certificate of assumed name, or registration of trade name.
A DBA does not change your tax obligations or create a new tax identity. Sole proprietors report their DBA on Schedule C of the federal return, where Line C asks for the business name.3Internal Revenue Service. Schedule C (Form 1040) Your Social Security number or existing EIN stays the same; the IRS states that changing a business name does not require a new Employer Identification Number.4Internal Revenue Service. When to Get a New EIN
A DBA Is Not a Trademark
This is the point that catches business owners off guard. A DBA is a local registration that identifies who runs a business. A trademark is intellectual property that gives you the exclusive right to use a name, logo, or slogan for specific goods or services. They solve different problems.
Registering a DBA won’t stop another business from using your name, even in the same city. And if someone else already holds a federal trademark on the name you registered, they can force you to stop using it regardless of your local filing. Before settling on a name, search the USPTO’s federal trademark database in addition to your state’s DBA registry. The USPTO cautions that trademarks can conflict even when they aren’t identical: names that look alike, sound alike, or create similar commercial impressions can all cause problems.5United States Patent and Trademark Office. Federal Trademark Searching Someone can also hold common law trademark rights without a federal registration, so a clean USPTO search doesn’t fully guarantee you’re safe.
If you want real name protection, federal trademark registration through the USPTO starts at $350 per class of goods or services.6United States Patent and Trademark Office. USPTO Fee Schedule It’s a bigger investment than a DBA, but it comes with enforcement power a DBA doesn’t provide.
Running Several DBAs Under One Entity
A single LLC or corporation can register as many DBAs as it wants. That’s how parent companies run several brands without forming a separate entity for each. It reduces formation costs and keeps everything on one tax return. Each DBA still needs its own registration and filing fee.
The tradeoff is liability. Every brand operating under the same LLC shares the same legal and financial exposure. If one brand is sued or defaults on debt, assets tied to the other brands under that LLC are potentially reachable. Owners who want real separation sometimes form a separate LLC for each brand instead, at higher cost. At minimum, keep separate bank accounts and clean records for each DBA.
What Happens if You Don’t Register
Skipping registration is more than a paperwork problem. In some states, a business without a valid fictitious name filing cannot bring or maintain a lawsuit to enforce its contracts until it registers. Some jurisdictions also impose civil fines. Beyond the courthouse, banks may close accounts and landlords or vendors may refuse to work with a business that can’t produce valid registration documents.
Renewal, Amendments, and Abandonment
DBA registrations expire. Most states require renewal every five years; some allow ten. Operating under a lapsed DBA carries the same risks as never having filed, so track the expiration date. Renewal is usually a shorter version of the original filing with a modest fee.
If the business moves, adds or removes partners, or changes structure, file an amendment with the recording office. Outdated information can create service-of-process problems if someone sues your business; the court may not be able to reach you at the address on file, which makes the case harder to defend.
When you stop using a name, file a formal statement of abandonment or cancellation with the office where you registered. That closes out the record and, in states that restrict duplicate names, frees the name for others.
Operating in More Than One State
If your business crosses state lines, you may need to register the DBA in each state where you operate. That’s separate from “foreign qualification,” which is registering the LLC or corporation itself in a new state. During foreign qualification, if your company’s legal name is already taken in the new state, you may be required to operate there under a different name, which adds another layer of fictitious name registration on top of any DBAs you use voluntarily.1U.S. Small Business Administration. Register Your Business
Each state has its own filing rules, fees, renewal cycles, and publication requirements. Check the Secretary of State’s website in each state you plan to operate in and build the ongoing cost of multiple registrations into your expansion planning.