Louisiana DBA: Parish Clerk Filing and State Trade Name Registration

If you're starting a business in Louisiana and plan to operate under a name other than your legal name, you're dealing with two separate systems that often get confused: the mandatory parish-level assumed name certificate and the optional Secretary of State trade name registration. Understanding the difference, and how to navigate both, is essential for protecting your Louisiana DBA and operating legally across the state.

Skip the paperwork

Let a pro file your Louisiana business for you

Filing in Louisiana means state registration, an EIN, and a registered agent. These two services handle all of it, and here's our honest take on when to use each.

Top pick · Best value

Northwest Registered Agent

$39 + state fee

Keeps your home address private
Free registered agent for year one
Real US-based support, no upsell maze

Best for: most Louisiana founders who want privacy and value without the markup.

Form my Louisiana LLC →

BetterLegal

Fastest setup · premium

Business filed in about 2 business days
Bundles your EIN + operating agreement
One streamlined, hands-off checkout

Best for: founders who need it done fast with everything bundled.

Set up with BetterLegal →

Affiliate partners: we may earn a commission at no extra cost to you. Pricing is set by each provider and may change.

Understanding Louisiana's Two-System Approach

Louisiana's approach to DBAs (doing business as names, also called assumed names or trade names) is unique compared to many states. Rather than a single statewide DBA system, Louisiana requires DBAs to be registered with parish clerks of court, the local officials in each parish where you operate. On top of that optional layer sits the Secretary of State's trade name registration system, which provides additional statewide protection.

This dual approach exists because Louisiana law (R.S. 51:281) mandates that sole proprietors and partnerships file an assumed-name certificate with the clerk of court in every parish where they conduct business. Corporations are exempt from this requirement. Most people registering a Louisiana DBA file at the parish level first and may then decide whether to pursue Louisiana trade name registration at the state level for added protection.

System 1: Parish Clerk of Court Assumed Name Certificate (Mandatory)

The parish clerk is the primary authority for Louisiana DBA registration if you're a sole proprietor or partnership. This is the local, mandatory system that gives your business legal standing to operate under an assumed name.

What You're Filing

You'll file an assumed-name certificate with the clerk of court in each parish where your business operates. This is a notarized affidavit that announces your intention to do business under a name other than your legal name. The certificate creates a public record, required by law, and protects your right to use that name within that parish.

Fee Structure

Parish clerk fees for assumed-name filings vary significantly by parish and are set locally. The Louisiana Secretary of State does not publish a statewide fee schedule for these filings. You'll need to contact your parish clerk's office directly to learn the current fee. Fees typically range from $25 to $75, but confirm this with your specific parish before filing.

Key Requirements

Notarization: The assumed-name certificate must be notarized. You'll need to present this document to a notary public who will witness your signature and seal the document.
Name distinctiveness: Your assumed name must be distinguishable from other corporate, LLC, and trade names already on file with the Secretary of State, and from other names on file with your parish clerk.
Every parish where you operate: If you do business in multiple parishes, you must file in each one. This is a critical point: filing only in the parish of your office is not sufficient if you operate elsewhere.
Renewal: Most parish assumed-name filings do not require annual renewal, but check with your specific clerk's office about any ongoing obligations.

System 2: Secretary of State Trade Name Registration (Optional)

The second system is the optional Louisiana trade name registration with the Secretary of State. While your parish filing is mandatory and local, this state-level registration is optional, but it provides significant benefits if you want name protection across the entire state.

What Is State Trade Name Registration?

State trade name registration creates a statewide public record of your assumed name in the Secretary of State's database. It is separate from parish-level filing and serves a different purpose: it announces your name to the entire state, providing a level of protection against others using the same or confusingly similar names across Louisiana.

This is different from federal trademark registration. A Louisiana trade name registration protects a business name within the state; federal trademark registration protects a brand name, logo, or slogan nationwide and internationally. Many businesses do both.

Fee and Form

The Secretary of State charges $95 for trade name registration (effective October 1, 2026). You'll file Form #309 (Trade Name Registration) online through the Secretary of State's geauxBIZ portal at https://geauxbiz.sos.la.gov/ or by mail with the Commercial Division.

Processing Time

The Secretary of State does not publish a standard processing timeline for trade name filings. If you need faster service, expedited options are available: $30 for processing within 24 hours, or $50 for priority expedite (processed while you wait at the Baton Rouge office), each in addition to the $95 filing fee.

Name Availability Check

Before filing, search the Secretary of State's business name database at https://coraweb.sos.la.gov/CommercialSearch/CommercialSearch.aspx to ensure your desired name isn't already registered. Names are checked not only for exact matches but also for phonetic similarity and alternate spellings.

Do You Need Both Filings?

This is the key question many business owners ask. The answer depends on your situation:

Single parish operation: If you operate in only one parish, the parish clerk filing is mandatory for legal compliance. State trade name registration is optional but adds statewide protection if you plan to expand or want extra name protection.
Multi-parish operation: If you do business in multiple parishes, you must file with the clerk in each parish. State registration then becomes increasingly valuable, because a single state filing covers all parishes simultaneously, whereas separate parish filings can be cumbersome.
Name protection as priority: If protecting your business name from others is a priority, especially if it's a distinctive or valuable brand, state registration is worth the $95 investment.
Corporations: If you've formed an LLC or corporation, you're exempt from the parish filing requirement but can still register a trade name at the state level for an assumed name your corporation uses.

Step-by-Step: How to Get a DBA in Louisiana

Step 1: Name Check

Search the Secretary of State database to confirm your name is available statewide, then check your parish clerk's database for availability locally.

Step 2: Prepare Your Assumed-Name Certificate

Obtain the required form from your parish clerk's office. The format may vary slightly by parish, but all must include your legal name, your assumed name, your business address, and the nature of your business.

Step 3: Get the Certificate Notarized

Take your completed certificate to a notary public. Bring a valid government-issued ID. The notary will witness your signature and attach the notary seal. Cost is typically $10 to $25.

Step 4: File with Your Parish Clerk

Submit the notarized certificate to your parish clerk's office in person, by mail, or (in some parishes) electronically. Pay the filing fee and receive a filed copy. The effective date is typically the date the clerk receives and files the document.

Step 5 (Optional): Register with the Secretary of State

If you want statewide protection, file Form #309 through geauxBIZ or mail it to the Secretary of State's Commercial Division with the $95 registration fee.

Step 6 (If Multi-Parish): Repeat for Each Parish

If you operate in multiple parishes, repeat Steps 2 through 4 for each parish. Keep copies of all filed certificates for your records.

Important Compliance Notes

Duration and Renewal

Most parish assumed-name filings do not expire and do not require renewal, but some parishes have different rules. Confirm renewal requirements with your parish clerk. State trade name registrations also do not require renewal unless the Secretary of State specifically mandates periodic renewals (verify this on the SOS website).

Name Changes and Updates

If you change your assumed name or business address, you'll need to file an amendment with the parish clerk (and with the Secretary of State if you registered there). Costs and procedures for amendments vary by parish.

Liability and Legal Standing

Filing an assumed-name certificate protects your right to use that name but does not create a separate legal entity (as forming an LLC or corporation would). You, as the sole proprietor or partnership, remain personally liable for business debts and lawsuits. Consider formation of an LLC or corporation if liability protection is important.

Distinctive Requirements

Your assumed name must be distinguishable from names already registered with the Secretary of State. The name cannot imply you are a government agency, cannot contain "doing business as" or "d/b/a" in the registered name itself, and cannot indicate a purpose unlawful for a business in Louisiana.

Where to File

Parish Clerk of Court: Locate your parish clerk's office contact information through your parish government website. Each parish handles filings and fees independently.
Secretary of State, Commercial Division: https://www.sos.la.gov/business-services
geauxBIZ Online Filing Portal: https://geauxbiz.sos.la.gov/
Business Name Search: https://coraweb.sos.la.gov/CommercialSearch/CommercialSearch.aspx

When to Consult a Professional

The process of filing an assumed name is straightforward and something many business owners handle themselves. However, if your situation is complex, such as operating across multiple parishes, managing intellectual property concerns, or planning a business structure that might require both DBA and entity formation, consulting with a Louisiana business attorney is worth the investment. They can ensure you're meeting all legal requirements and protecting your interests.

Key Takeaway

Louisiana DBAs involve a two-part system: your mandatory parish clerk filing (assuming you're a sole proprietor or partnership) and your optional state trade name registration. The parish filing gives you local legal standing; the state registration gives you statewide name protection. Together, they ensure your business operates under its assumed name with full legal recognition across Louisiana.

Disclaimer: This guide is informational and does not constitute legal or tax advice. Business formation laws are complex and vary by situation. Before making decisions about your Louisiana DBA, trade name registration, or business structure, consult a qualified attorney or accountant familiar with Louisiana business law. The fees, forms, and requirements mentioned here are current as of the publication date but subject to change. Always verify current requirements and fees directly with the Louisiana Secretary of State and your parish clerk before filing.