A DBA ("doing business as"), also called a fictitious, assumed or trade name, registers a business name that differs from your legal name. A sole proprietor named Maria Lopez who sells as "Sunny Side Cleaning" usually needs one. It does not create a separate entity or limit liability, and it is filed with the state, county or city depending on where you are.
When you need one
- A sole proprietor using any name other than their own legal name
- An LLC selling under a brand name different from its registered name
- Banks asking for proof of the trade name to open an account in that name
DBA vs LLC
| DBA | LLC | |
|---|---|---|
| Creates a separate entity | No | Yes |
| Limits liability | No | Can |
| Filed with | State, county or city (varies) | State |
| Main purpose | Use a trade name | Create a business entity |
Where to file
Filing location depends on your state. For example, Florida registers fictitious names through Sunbiz, and Texas assumed names are filed with the county clerk for sole proprietors and with the Secretary of State for entities. Confirm with your state.
Worked example
A sole proprietor named Sarah Lee wants to run her bakery as "Sweet Corner." She files a DBA with her county, as her state requires, and uses the filing to open a bank account under the trade name. Her website footer shows "Sweet Corner, a business of Sarah Lee" where required. She sets a reminder for the DBA renewal date.
Common mistakes
- Assuming a DBA protects the name nationwide
- Opening a bank account before filing the DBA
- Forgetting to renew where DBAs expire
- Using a name too close to a trademark
How a DBA shows up in daily business
Once filed, the DBA name appears on your bank account, invoices, website, signage and Google profile. Some states require the legal owner's name to appear on contracts or receipts alongside the DBA. Keep a copy of the filing handy, as banks, payment processors and some clients may ask for proof.
Common questions
Is a DBA the same as a trademark?
No. A DBA registers a name for doing business; a trademark protects a brand. They are separate.
Does a DBA expire?
In many places, yes. Renewal periods vary, so note the date.
Can an LLC have a DBA?
Yes. An LLC can register a DBA to operate under another name.
Do I need a DBA if I use my own name?
Usually not, if you operate under your full legal name.
Can I have multiple DBAs?
Yes, many businesses register more than one trade name.
Sources
- SBA: Register your business
- SBA: Choose your business name
- Florida fictitious name registration (Sunbiz)
- Texas SOS: Business organizations
Sources checked October 6, 2026. Rules, fees and forms change; confirm details with the agency or provider before you act. This guide is general information, not legal, tax or insurance advice.
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