What is a DBA and when do you need one

DBA, assumed name, fictitious name and trade name all mean the same thing: a business name that is not the owner's legal name. It is one of the cheapest registrations there is, and one of the most misunderstood. This guide explains what it does and what it does not.

By Hamza Fida, Chartered Accountant. Reviewed by Awais Jameel, Chartered Accountant. Checked against official sources on . 3 minute read.

Short answer

A DBA, short for doing business as, is a registered name a business uses that is different from its legal name. A sole proprietor needs one to trade under a name other than their own, and an LLC needs one to use a name other than its registered name. A DBA is not a separate entity and gives no liability protection or trademark rights.

At a glance

Stands for
Doing business as
Also called
Assumed name, fictitious name, trade name
Needed when
You trade under a name that is not your legal name
Creates a company?
No
Liability protection
None
Filed with
The state or the county, depending on the state
What is a DBA and when do you need oneSteps: 1. Check the name; 2. File the registration; 3. Publish a notice if required; 4. Renew on time.THE PROCESS AT A GLANCEWhat is a DBA and when do you need one1Check the nameSearch state and countyrecords and the trademarkdatabase2File the registrationWith the state or countyoffice that handles assumednames where you operate3Publish a notice ifrequiredSome states require anewspaper notice after filing4Renew on timeMany registrations expireafter a set number of yearsChecked against official sourcesTax BakersWhat is a DBA and when do you need oneSteps: 1. Check the name; 2. File the registration; 3. Publish a notice if required; 4. Renew on time.THE PROCESS AT A GLANCEWhat is a DBA and when do you needone1Check the nameSearch state and county records and thetrademark database2File the registrationWith the state or county office that handlesassumed names where you operate3Publish a notice if requiredSome states require a newspaper notice afterfiling4Renew on timeMany registrations expire after a set numberof yearsChecked against official sourcesTax Bakers
The process at a glance: 1. Check the name; 2. File the registration; 3. Publish a notice if required; 4. Renew on time.

What is a DBA?

A name registered for public record so that customers and authorities can find out who is behind a business. If Maria Lopez runs a bakery as "Sunrise Bakery", that name is her DBA. If Lopez Holdings LLC runs the bakery, "Sunrise Bakery" is the LLC's DBA. In both cases the legal person is Maria or the LLC, and the DBA is only a label.

When do you need one?

  • A sole proprietor or partnership trades under a name other than the owners' own legal names.
  • An LLC or corporation trades under a name other than the exact name on its formation document.
  • One company runs several brands or shops and wants each name on the record.
  • A bank or payment processor asks for proof that you are entitled to use the name.

What does a DBA not do?

  • It does not create a company. There is no new legal entity.
  • It gives no liability protection. A sole proprietor with a DBA is still personally liable for the business's debts. See LLC vs sole proprietorship.
  • It gives no exclusive right to the name. Brand protection comes from trademark law. See LLC name rules.
  • It does not change your taxes. There is no separate return or tax number for a DBA.

What is it called, and where do you file?

StateWhat it is calledWhere it is filed
CaliforniaFictitious business nameThe county clerk, followed by a newspaper notice
TexasAssumed nameThe Secretary of State for LLCs and corporations; the county clerk for sole proprietors and partnerships
FloridaFictitious nameThe Division of Corporations
New YorkAssumed nameThe Department of State for LLCs and corporations; the county clerk for sole proprietors and partnerships
ColoradoTrade nameThe Secretary of State

Fees, renewal periods and publication rules differ by state and county. Check the office where you will file.

How do you register a DBA?

  1. Check the name

    Search state and county records and the trademark database.

  2. File the registration

    With the state or county office that handles assumed names where you operate.

  3. Publish a notice if required

    Some states require a newspaper notice after filing.

  4. Renew on time

    Many registrations expire after a set number of years.

DBA or LLC: which do you need?

They do different jobs. A DBA is a name. An LLC is a legal entity that separates the business's debts from your own. A sole proprietor who only wants a brand name needs a DBA. One who wants protection needs an LLC, and may still register a DBA if the brand differs from the LLC's name. See how to start an LLC.

How does a DBA affect banking and tax?

Banks open accounts and accept payments in the DBA name once you show the registration. Taxes stay under the legal name: a sole proprietor reports the business on their own Schedule C, and an LLC's returns are filed under the LLC's name and EIN. On Form W-9, the legal name goes on line 1 and the DBA on line 2.

Need a business name registered?

We check the name, register your DBA with the right state or county office, and form an LLC if you need liability protection as well.

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Questions people ask

What does DBA stand for?

Doing business as. It is a registered business name that differs from the owner's or company's legal name.

Does a DBA protect my personal assets?

No. A DBA is only a name. Liability protection comes from forming an entity such as an LLC.

Does an LLC need a DBA?

Only if it trades under a name other than the exact name on its formation document.

Does a DBA need its own EIN?

No. The tax number belongs to the person or entity behind the name, not to the DBA.

Sources

Every fee, date and rule on this page was taken from these official and primary sources.

  1. U.S. Small Business Administration: Choose your business name
  2. IRS: Form W-9 and instructions (Rev. March 2024)
  3. Texas Business and Commerce Code chapter 71: assumed business or professional name
  4. California Business and Professions Code sections 17900 to 17930: fictitious business names

Rules and fees change. If you are reading this long after October 1, 2026, confirm the figures with the source before you rely on them.

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This guide is general information. It is not tax or legal advice for your situation.