DBA · Louisiana

How to File an Assumed Name for an LLC in Louisiana

By Edmond Hui · Last updated October 6, 2026

Short answer

Louisiana requires an LLC that does business under a name other than its own to register an assumed name. The assumed name law exempts corporations but not LLCs, so an LLC trading under another name files the parish certificate. A corporation does not file one. We found no publication step for an LLC's assumed name filing in Louisiana.

Louisiana Assumed Name at a Glance

Requirement: Required
Where to file: Parish office (parish clerk of court)
Fee: Not confirmed
How long it lasts: Not confirmed
Newspaper notice: None found
File online: Not confirmed

How an LLC Files

An LLC registers an assumed name with the parish clerk of court in each parish where it does business.

Filing needs acknowledgment before a clerk or notary.

The Secretary of State separately registers trade names under Louisiana's trademark law, which is a different filing from the parish certificate.

Open the filing office's site

Publication

We found no publication step for an LLC's assumed name filing in Louisiana.

If you skip it

Trading under an assumed name without filing the certificate is punishable by a fine of $25 to $100, jail of 10 to 60 days, or both, and each day is a separate offense. A license collector may not issue a business license receipt until the certificate is shown.

Sole proprietors

Louisiana requires a sole proprietor who does business under a name other than their legal name to register an assumed name. A partnership need not file when its name includes the real name of at least one of the people carrying on the business. In New Orleans the certificate goes to the register of conveyances instead of the clerk of court.

A sole proprietor registers an assumed name with the parish clerk of court in each parish where the business operates.

Filing needs acknowledgment before a clerk or notary.

We found no publication step for a sole proprietor's assumed name filing in Louisiana.

Requirement	Required
Where to file	Parish office (parish clerk of court)
Fee	Not confirmed
How long it lasts	Not confirmed
Newspaper notice	None found
File online	Not confirmed

Next steps

Frequently Asked Questions

: Louisiana requires an LLC that does business under a name other than its own to register an assumed name. The assumed name law exempts corporations but not LLCs, so an LLC trading under another name files the parish certificate. A corporation does not file one.
: An LLC registers an assumed name with the parish clerk of court in each parish where it does business. Filing needs acknowledgment before a clerk or notary.
: We found no publication step for an LLC's assumed name filing in Louisiana.
: Trading under an assumed name without filing the certificate is punishable by a fine of $25 to $100, jail of 10 to 60 days, or both, and each day is a separate offense. A license collector may not issue a business license receipt until the certificate is shown.
: Louisiana requires a sole proprietor who does business under a name other than their legal name to register an assumed name. A partnership need not file when its name includes the real name of at least one of the people carrying on the business. In New Orleans the certificate goes to the register of conveyances instead of the clerk of court. A sole proprietor registers an assumed name with the parish clerk of court in each parish where the business operates.

This guide is general information, not legal or tax advice, and reading it does not create an attorney-client relationship. It reports what each state's filing office publishes about registering a business name, with the sources this page cites. A filing here does not register a federal trademark, and fees and forms change between our reviews. Confirm with the office named on this page before you file.

Sources

Each entry below is a document recorded in our verified Louisiana sources, and each entry says what the document is. Some statutory text is read from an accurate mirror rather than from the state's own host, and those say so.

legis.la.gov/Legis/Law.aspx?d=104449La. R.S. 51:281, Assumed business names: registration; condition precedent to licensing
legis.la.gov/Legis/Law.aspx?d=104453La. R.S. 51:283, Corporation; partnership
legis.la.gov/Legis/Law.aspx?d=74080La. R.S. 1:10, Person, defined
legis.la.gov/Legis/Law.aspx?d=104454La. R.S. 51:284, Penalty; fee for certificate needed to obtain license
sos.la.gov/business-services/frequently-asked-questionsLouisiana Secretary of State, Business Filing Frequently Asked Questions
sos.la.gov/business-services/forms-fee-scheduleLouisiana Secretary of State, Forms and Fee Schedule

Edmond Hui · Founder, MyStateLLC

Edmond Hui is a software engineer and serial entrepreneur based in New York who has founded multiple online businesses across e-commerce, media, and information publishing. Before transitioning into tech, he spent years as a commercial real estate professional closing deals totaling over 100,000 square feet, giving him firsthand experience with business formation and entity structuring. He built MyStateLLC to provide the free, state-specific LLC guidance he wished existed when forming his own companies.