What Is a DBA? Doing Business As Explained (2026)

A DBA, short for "doing business as," is the official name a business uses with the public when it is different from its legal name. You may also see it called a fictitious business name, an assumed name, or a trade name, depending on the state. If Jane Smith runs a bakery as "Sunrise Breads," then Sunrise Breads is her DBA.

A DBA is one of the most common, and most misunderstood, filings in small business. It is cheap and quick, but it is not a business structure, and it does not protect your personal assets or your brand the way many owners assume. Here is what a DBA actually does, when the law requires one, and where its limits are.

What does DBA stand for?

DBA stands for "doing business as." It signals that a person or company is operating under a name that is not its own legal name. A sole proprietor's legal name is the owner's personal name. A company's legal name is the one on its formation documents. Any public-facing name that differs from those triggers the need for a DBA in most states.

Two kinds of businesses commonly file one. The first is a sole proprietor or general partnership that wants a real business name instead of operating under a personal name. The second is an existing LLC or corporation that wants to run a brand, product line, or location under a separate name without forming a whole new company.

When do you actually need a DBA?

You generally need a DBA whenever the name you present to customers is not your exact legal name. Common triggers include:

A sole proprietor operating under anything other than their own full legal name. "John Miller" needs no DBA; "Miller Handyman Services" does.
An LLC or corporation running a brand that differs from the registered entity name. "Acme Holdings LLC" doing business as "Downtown Coffee" needs a DBA for the coffee shop name.
A business that wants to open a bank account, sign contracts, or accept checks under its trade name. Banks typically require a filed DBA before they will open an account in that name.

Requirements are set at the state, and sometimes county, level. Some states require DBA registration with the secretary of state; others handle it at the county clerk's office; a few require you to publish the name in a local newspaper. Because the rules and the name for the filing vary so widely, check your own state's process before you assume.

What a DBA does not do

This is where owners get into trouble. A DBA is a registration, not a legal shield. Specifically:

It does not create liability protection. If you are a sole proprietor with a DBA, you are still personally responsible for the business's debts and lawsuits. Only forming an entity such as an LLC or corporation separates your personal assets from the business. If liability protection is your goal, setting up an LLC is the step that matters, not filing a DBA.
It does not give you trademark rights. Registering a DBA with the county does not stop another business from using the same name, and it does not protect you if your name infringes someone else's trademark. Name protection comes from trademark law, not from a fictitious-name filing.
It does not change your taxes. A DBA has no separate tax status. A sole proprietor with a DBA still reports business income on a personal return; an LLC with a DBA is still taxed as the LLC.

How to file a DBA

The process is usually simple and inexpensive. In most places the steps look like this:

Search your state and county records to confirm the name is available and not already in use.
File the DBA, fictitious name, or assumed name form with the correct office, which is either the secretary of state or the county clerk depending on your state.
Pay the filing fee, which commonly ranges from about $10 to $100.
If your state requires it, publish notice of the name in an approved newspaper for a set number of weeks and file proof of publication.
Renew when required. Some DBAs last indefinitely; many expire after five years and must be renewed.

Filing a DBA does not require a lawyer. Where legal advice helps is on the questions around it: whether you should form an LLC instead, whether your chosen name risks infringing a trademark, and how to keep your trade name and entity name consistent on contracts.

Frequently Asked Questions

Is a DBA the same as an LLC?

No. An LLC is a legal business structure that creates a separate entity and shields your personal assets. A DBA is just a registered name with no liability protection or separate tax status. Many businesses have both: an LLC for protection and a DBA for a brand name.

Do I need a DBA if I use my own name?

Usually not. A sole proprietor operating under their exact legal name typically does not need a DBA. Once you add anything to that name, such as "and Associates" or a brand word, most states require you to register it.

How much does a DBA cost?

Filing fees commonly run from about $10 to $100, depending on your state and county. States that require newspaper publication add a separate cost for the notice.

Does a DBA protect my business name?

Only weakly. A DBA registers your use of a name in a county or state, but it does not give you trademark rights and does not stop others nationwide from using the same name. For real name protection, look into trademark registration.

Sources

This article is general information, not legal advice. DBA rules vary by state and county; confirm your local requirements before filing.