How to add a DBA to an LLC in Louisiana

Choose the right filing before you submit anything

An alternate operating name does not change the LLC itself. Louisiana distinguishes Secretary of State trade names from parish-level DBAs filed with the local Clerk of Court. Treat them as separate checks, not interchangeable filings.

A Louisiana trade name registration is available to an LLC. Form #309 asks for the owner, proposed name, business or services, and first-use dates, plus a signed, notarized verification. The office issues a certificate only if it finds the name distinguishable from ones already in use. Start with the state business-filings search, but treat it as preliminary; review at filing is the final check.

Where do I file a DBA for an LLC in Louisiana?

File the state trade-name application with the Louisiana Secretary of State when the LLC is already using the alternate name and wants it registered in the state system. Separately, contact the clerk in every parish where the LLC conducts business about the local assumed-name certificate.

• Search the name in the Secretary of State's commercial database before committing to signs, a website, or packaging.
• Use the Secretary of State's Form #309 for a state trade-name registration, not a legal-name change.
• Ask the relevant parish office what it needs for an assumed-business-name record and for any local license.

The state application is not for a name you merely hope to use later. The form says:

"The trade name, trademark or service mark must actually be in use on the date of this application." — Louisiana Secretary of State, Form #309, Instructions 8

If use has not begun, Louisiana law allows a separate 120-day reservation when the name is available. The current schedule lists it at $25. It is not an operating-name registration.

For a GeauxBIZ trade name filing, create or sign in to the state's official portal. GeauxBIZ says it can register a tradename or trademark. The current #309 transmittal also says business owners in specified parishes must file all available business documents online through GeauxBIZ. If the filing option does not appear for your situation, use the Commercial Division's current instructions rather than assuming an online route is available.

Do I also need to file in my parish?

Possibly, and the answer depends on the parish and the way the LLC operates. Louisiana's statute directs assumed-name certificates to the clerk of court or, in New Orleans, the register of conveyances, while the Secretary of State says DBAs are handled locally.

• Identify every parish in which the LLC conducts or plans to conduct business under the alternate name.
• Contact each clerk before applying for a local occupational license, permit, or account that asks for the operating name.
• Keep the recorded certificate with the state trade-name record, formation documents, and local licensing records.

Louisiana Revised Statutes § 51:281 says a person using an assumed name must file a notarized certificate with the clerk of court of the parish or parishes where the business is conducted or intended to be conducted. In New Orleans, the statute points to the register of conveyances. The certificate identifies the operating name, the real full name of the owner, and the owner's post-office address.

The official FAQ says trade names conflict with LLC and corporate names, while DBAs are filed at the parish level. That is why a Louisiana parish assumed business name certificate deserves its own call to the local office.

The question Does a Louisiana LLC need a parish DBA filing? cannot be answered safely with a blanket yes or no from the sources reviewed. Section 51:283 expressly excludes corporations duly organized or lawfully doing business in Louisiana from that statutory subpart, but it does not name LLCs. Do not assume your LLC's status resolves the local question. Ask the clerk in each operating parish whether it requires the certificate for an LLC using your proposed name, and ask whether the parish has a separate fee or local form.

What does a Louisiana trade-name filing change?

It records an alternate name connected to its owner in the Secretary of State system; it does not rewrite the LLC's articles or turn the filing into a federal trademark registration. Use a legal-name amendment only when the entity's official name itself must change.

• Put the LLC's full legal name on state filings and show the trade name as the operating name where appropriate.
• Use the amendment path if the name in the Articles of Organization, rather than the public-facing name, must change.
• Consider a separate trademark clearance and application if the name will identify the source of goods or services beyond the business record.

A Louisiana LLC name amendment is the different tool when the company wants the legal entity name changed. The state's current fee schedule separately lists "Amended Articles, Mergers, Dissolutions, Certificate of Correction" for domestic LLCs. Check the current amendment workflow and fee before filing because it changes the entity record, not simply the label customers see.

Louisiana trade name vs trademark is another decision, not a formality. Form #309 has separate checkboxes for trade name, trademark, and service mark; select only the filing you mean to make. The USPTO explains that business-name registrations and trademarks differ, and that use of a business name does not necessarily qualify as trademark use. A trade-name record or a domain purchase should not be treated as proof of federal trademark rights. For a brand that matters to the business plan, search the state records and the federal trademark database before launch.

Complete the application and set the renewal record

Use this founder checklist before sending Form #309 or completing its state online workflow:

1. Confirm the LLC's exact legal name and business address.
2. Check the proposed operating name in the state commercial database, including similar spellings.
3. Confirm that the name is actually in use in Louisiana, or reserve it first if use has not begun.
4. Enter the first-use date anywhere and the first-use date in Louisiana, plus a plain description of the business or services.
5. Have the applicant or authorized representative sign and notarize the verification.
6. Determine whether each operating parish needs a local assumed-name certificate.
7. Save the accepted state record, parish record if any, and your renewal date in the LLC's compliance file.

The current Secretary of State fee schedule lists $95 for Trade Name, Trademark & Service Mark Registration (Form #309). The form also displays a $95 filing fee and a renewal checkbox. Under La. R.S. 51:216, a trade-name registration lasts 10 years; apply to renew within the six months before it expires, and state that the name is still in use in Louisiana. The statute permits successive 10-year renewals.

The official form lists optional expedited handling at $35 for 24-hour processing and $60 for 2-4-hour priority processing. Those are processing options, not a promise that the name will be accepted. No routine processing estimate is stated in the primary sources used here, so build your launch schedule around a completed filing rather than an assumed turnaround.

The key to how to add a DBA to an LLC in Louisiana is preserving both identities: the legal entity remains the contracting party, while the alternate name needs the appropriate records. Keep accepted filings together rather than treating one receipt as every approval.

About the author and sources

Prepared by Lovie. This guide uses the linked primary sources to explain the choices and records involved in this topic. It is general education, not legal, tax, accounting, or regulatory advice. Confirm your facts and current requirements with the relevant authority or a qualified professional.

Continue with the Formation resource library or explore company formation.