A fictitious name is any name a business uses publicly that isn’t the owner’s legal name or the name on the entity’s formation documents. It’s also called a “doing business as” name, a DBA, a trade name, or an assumed name, and most states require you to register it before you start using it. The filing is short and inexpensive, but skipping it can leave you unable to enforce a contract in court or open a bank account under the name you’re actually using.1Legal Information Institute. Fictitious Business Name
When You Need to Register One
The trigger is straightforward. If you do business under any name that isn’t your own legal name (for individuals) or the name on your articles of incorporation or organization (for LLCs and corporations), that’s a fictitious name and it needs to be filed.1Legal Information Institute. Fictitious Business Name
A sole proprietor named Jane Doe operating as “Jane Doe Landscaping” is usually fine, because the name includes her full legal name. The moment she calls the business “Green Thumb Services,” she needs a registration. The same rule applies to entities. If “Riverside Holdings LLC” wants to sell coffee as “Morning Grind Coffee,” that second name is a DBA. Companies routinely register fictitious names to brand separate product lines, run distinct divisions, or market under something shorter and catchier than the name on their formation paperwork.
Where and How to File
There is no federal fictitious name registration. Filings happen at the state or county level, and which office handles it depends on where you are. Some states route everything through the Secretary of State. Others require you to file with the county clerk where your principal place of business sits. A handful require both a state filing and a county recording. In some states the split runs by entity type: sole proprietors and partnerships file at the county level, while corporations and LLCs file with the state.
The form itself is short. You’ll typically give the proposed name, the legal name of the owner or entity, a business address, and a brief description of what the business does. Most states ask you to run a name availability check first so your proposed name is distinguishable from names already on record. Many jurisdictions have online portals that return approval in a few business days; mail filings take longer.
Publication Requirements
A handful of states require you to publish notice of your filing in a local newspaper after you register. A common pattern is publication once a week for three consecutive weeks, followed by an affidavit confirming the notice ran. Publication costs typically run between $35 and $105 depending on the paper and location. Most states don’t require this step, so check your state’s rules before budgeting for it.
Filing Fees
Fees vary widely. A few states charge as little as $5 to $10. Others reach $100 to $150, particularly for corporations or LLCs in states that scale fees by entity type. Most fall in the $20 to $50 range for the initial registration. If your state requires newspaper publication, add that cost on top.
What Happens If You Don’t Register
Operating under an unregistered DBA isn’t just a technicality. In many states, a business that hasn’t properly registered its fictitious name cannot sue to enforce a contract made under that name. Courts in several states will dismiss the claim outright if the plaintiff was doing business under an unregistered name when the contract was signed. You could lose the ability to collect a debt, enforce a lease, or compel arbitration because you skipped a filing. Most people learn about the requirement this way.
The practical problems come sooner. Banks almost always want a copy of your fictitious name certificate before they’ll open a business account under that name. Without it, you’re stuck depositing checks made out to your business into a personal account, which creates accounting problems and looks unprofessional. Some states also impose fines for operating under an unregistered assumed name.
What a Fictitious Name Is Not
A DBA is a public notice filing. It tells the world who stands behind a business name. It does not give you exclusive rights to that name, and in most jurisdictions another business can register the exact same fictitious name.
A trademark is different. Registering a trademark with the U.S. Patent and Trademark Office secures nationwide ownership rights to a name, logo, or slogan that identifies the source of goods or services.2United States Patent and Trademark Office. Trademark or Trade Name A trademark gives you legal recourse if someone else uses your mark in a way that causes confusion. A fictitious name registration does not. If brand exclusivity matters, you need a trademark on top of your DBA.
A fictitious name also does not create a separate legal entity. If you’re a sole proprietor operating under a DBA, you remain personally liable for every business obligation. The DBA is a name on a sign. It puts no legal barrier between your personal assets and your business debts.
Taxes and Bank Accounts
A fictitious name doesn’t change your tax identity. Sole proprietors continue to report business income on their personal return, and LLCs and corporations keep using their existing Employer Identification Number. The IRS states that changing or adding a business name does not require a new EIN; you’d only need one for a structural change like incorporating or forming a partnership.3Internal Revenue Service. When to Get a New EIN
On IRS Form W-9, the distinction matters. Your legal name goes on Line 1 and the DBA goes on Line 2. The IRS matches your taxpayer identification number to whatever appears on Line 1, so putting the fictitious name there can cause processing errors and mismatched 1099s.4Internal Revenue Service. Instructions for the Requester of Form W-9
When you open a business bank account, bring your DBA certificate along with your EIN confirmation letter and personal identification. The bank uses the certificate to verify you’re authorized to transact under the fictitious name.
Signing Contracts Under a DBA
The signature block matters more than people realize. When you sign a contract under a fictitious name, the document should clearly identify the legal entity behind it. A clean format for the opening paragraph or signature block is the legal entity name followed by the DBA: “Riverside Holdings LLC DBA Morning Grind Coffee.” That makes it unambiguous who is actually bound. Signing only as “Morning Grind Coffee” creates confusion about whether the entity or an individual is the contracting party, which becomes a real problem if the contract ends up in dispute.
Multiple Names and Renewals
A single business can register and operate under more than one fictitious name. Each DBA requires its own separate registration and filing fee. Operating under any unregistered name exposes you to the same enforcement and banking problems no matter how many other names you’ve properly filed.
Registrations don’t last forever in most states. The most common cycle is every five years. Some states require annual renewal, others set a ten-year cycle, and a few don’t require renewal at all because the registrations there don’t expire. Missing a renewal deadline means your registration lapses, which puts you in the same position as someone who never registered.
If your business address changes, ownership transfers, or you stop using the name, most states require you to file an amendment or cancellation. Set a calendar reminder for your renewal date, because most states won’t send a notice before the registration expires.