geauxBIZ is Louisiana's combined business registration site, built by several state offices. A single application registers a new business with the Louisiana Secretary of State, the Louisiana Department of Revenue, and other participating agencies. The Department of Revenue directs new businesses to register through it.

Sole Proprietorship in Louisiana (2026)

Q: Do I have to register a sole proprietorship in Louisiana?

No. A Louisiana sole proprietorship requires no formation filing with the Secretary of State and no state formation fee. Registration obligations arise from what you do rather than from the structure: a trade name if you use a business name, tax accounts through geauxBIZ, and a parish or municipal occupational license.

Q: How much does a Louisiana trade name registration cost?

The Louisiana Secretary of State charges $75 for each class registered on the Application to Register Trade Name, Trademark, or Service Mark. Confirm the amount before filing: Act 921 of the 2026 Regular Session increases Commercial Division fees effective October 1, 2026.

Q: Does a Louisiana sole proprietor need a business license?

There is no general statewide business license, but most parishes and municipalities require an occupational license for businesses operating within their boundaries, with locally set fees often tied to gross receipts. Regulated trades require additional professional licensing. Check with the parish or city where you operate.

Q: How is a Louisiana sole proprietorship taxed?

It is not a separate taxpayer. Business income and expenses go on Schedule C with the owner's Form 1040, and self-employment tax is computed on Schedule SE. Because nothing is withheld, most proprietors pay quarterly estimated tax. Louisiana income tax follows the owner's individual return.

Q: Does a sole proprietor in Louisiana need an EIN?

Not necessarily. A sole proprietor with no employees may use a Social Security number. An EIN becomes necessary once you hire employees, and many banks and clients prefer it because it keeps your SSN off forms. The IRS issues EINs free, so never pay a third party for one.

Fact-checked by the LegalGlass editorial team against primary sources · Published Aug 20, 2026 · Last updated Aug 20, 2026

A Louisiana sole proprietorship exists the moment one person starts doing business - there is no formation filing with the Secretary of State. If you operate under a name other than your own, you register a trade name with the Louisiana Secretary of State for $75 per class, and you register tax accounts through geauxBIZ.

Quick Answer

Formation filing: None - the sole proprietorship exists automatically
Trade name registration: $75 per class, Louisiana Secretary of State
Registration portal: geauxBIZ, the state's combined business registration site
Tax agency: Louisiana Department of Revenue (LDR)
Local licensing: Parish or municipal occupational license, set locally
Liability: Unlimited - personal assets are exposed to business debts
Federal filings: Schedule C and Schedule SE with Form 1040

What a Louisiana Sole Proprietorship Is

A sole proprietorship is one individual doing business without forming a separate entity. There is no filing with the Louisiana Secretary of State to create one and no state fee to become one. If you sell goods, take clients, or invoice for services in your own name, you are already operating as a sole proprietor.

The trade-off is legal, not administrative. A sole proprietorship is not distinct from its owner, so business debts, judgments, and contract obligations reach personal assets - the house, the car, personal bank accounts. That is the single biggest reason owners move to an LLC as revenue or risk grows. See what an LLC is and how to form an LLC in Louisiana.

Registering a Trade Name

You may operate under your own legal name with no name filing. To use any other name - a "doing business as" name - you register a trade name with the Louisiana Secretary of State using the Application to Register Trade Name, Trademark, or Service Mark. The registration fee is $75 for each class registered. Payment information can be saved in a geauxBIZ profile under the master account.

Note that Louisiana has legislated a change to Commercial Division fees: under Act 921 of the 2026 Regular Session, Secretary of State Commercial Division fees increase effective October 1, 2026. Confirm the current amount on the Secretary of State's fee schedule before you file rather than relying on any figure quoted elsewhere. See Louisiana DBA filing for the mechanics and what a DBA is for the concept.

geauxBIZ: One Application, Several Agencies

Louisiana consolidates new-business registration in geauxBIZ, a site built jointly by several state offices. Through a single application, a new business can register with the Louisiana Secretary of State, the Louisiana Department of Revenue, and other participating state agencies. The Department of Revenue directs new businesses to register through geauxBIZ.

What you register for depends on activity rather than entity type. A proprietor selling taxable goods needs a sales tax account; one with employees needs withholding and unemployment accounts. A service business with no employees may need neither. See how to start a business in Louisiana.

Parish and Municipal Licensing

Louisiana handles general business licensing locally. Most parishes and municipalities require an occupational license for businesses operating within their boundaries, with the fee set locally and often tied to gross receipts or business classification. Because rules differ across parish lines, confirm requirements with the parish or city where you actually operate before opening. Regulated trades add professional licensing on top. See Louisiana business license and the national business license overview.

Federal Taxes for a Sole Proprietor

A sole proprietorship is not a separate taxpayer. Business income and expenses go on Schedule C attached to the owner's Form 1040, and net earnings from self-employment are reported on Schedule SE, which computes Social Security and Medicare tax on the owner's own earnings. Because no employer withholds on that income, most proprietors make quarterly estimated tax payments using Form 1040-ES.

An EIN is free from the IRS. A sole proprietor without employees may use a Social Security number instead, but an EIN is required once you hire, and many banks and clients prefer it because it keeps the SSN off paperwork. See self-employment tax and the self-employment tax calculator for the arithmetic.

Two federal points catch new proprietors. First, self-employment tax is calculated on net earnings, not on gross receipts, so tracking deductible expenses directly reduces it. Second, the proprietorship files no separate business return - there is no entity-level return to extend, so an extension of the individual return is what moves the filing date, and it never extends the date the tax itself is due. Set aside a percentage of every payment received rather than reconstructing the liability in April.

Liability, Insurance, and Recordkeeping

Because the proprietorship and the owner are the same legal person, there is no entity-level shield to maintain and nothing to pierce - a claimant who wins a judgment against the business wins it against you. The practical substitutes are insurance and contract terms: general liability coverage sized to the work, professional liability where advice is the product, and written agreements that cap exposure where the law allows.

Recordkeeping still matters even without an entity. Keep a dedicated business bank account and card, retain receipts and mileage logs, and reconcile monthly. A clean set of books is what makes a Schedule C defensible on audit, supports a loan application, and produces a credible valuation if you later sell the business or roll it into an LLC. Sloppy commingled records are the most common reason a profitable small business cannot prove its own numbers.

When to Convert to an LLC

Four signals usually mean it is time to stop operating as a sole proprietor: you have taken on meaningful liability exposure, you are signing contracts that could produce a judgment, you are hiring, or a client or lender requires an entity. Forming an LLC in Louisiana does not erase past personal liability, but it separates future obligations if the LLC is run as a real entity with its own bank account and records.

Converting is not automatic. You form the LLC, move contracts and accounts to it, get a new EIN where required, and stop transacting personally. If you registered a trade name as a proprietor, decide whether the LLC should hold it. See single-member LLC in Louisiana, Louisiana LLC cost, and S-corp vs LLC.

Common Mistakes

Assuming a trade name creates a legal entity. It does not - it is a name registration only, and liability stays personal.
Skipping the parish occupational license because no state license exists.
Mixing personal and business money. Even without liability separation, a dedicated account makes Schedule C defensible.
Ignoring quarterly estimated taxes and facing a large April bill plus penalties.
Assuming the trade name gives trademark rights. It does not - see trademarking a name in Louisiana.
Relying on an outdated fee. Louisiana's Commercial Division fees change on October 1, 2026 under Act 921.

Frequently Asked Questions

Do I have to register a sole proprietorship in Louisiana?

No formation filing is required. Obligations come from activity: a trade name if you use one, tax accounts via geauxBIZ, and local occupational licensing.

How much does a Louisiana trade name registration cost?

$75 per class with the Secretary of State. Act 921 of 2026 raises Commercial Division fees effective October 1, 2026 - confirm before filing.

What is geauxBIZ?

Louisiana's combined registration portal covering the Secretary of State, the Department of Revenue, and other participating agencies in one application.

Does a Louisiana sole proprietor need a business license?

No statewide license, but most parishes and municipalities require an occupational license. See Louisiana business license.

How is a Louisiana sole proprietorship taxed?

On the owner's return - Schedule C for profit and Schedule SE for self-employment tax, usually with quarterly estimated payments.

Does a sole proprietor in Louisiana need an EIN?

Only once you hire, though many banks prefer one. The IRS issues EINs free - see how to get an EIN.

Sources

Louisiana Secretary of State - Start a Business.
Louisiana Secretary of State - Application to Register Trade Name, Trademark, or Service Mark ($75 per class).
Louisiana Secretary of State - Fee Schedule (Act 921 of 2026 fee changes effective October 1, 2026).
Louisiana Secretary of State - File Business Documents.
State of Louisiana - geauxBIZ business registration portal.
Louisiana Department of Revenue - Starting or Buying a Business, Business Registration.
IRS - Sole Proprietorships.
IRS - About Schedule C (Form 1040).
IRS - Self-Employment Tax.
IRS - Get an Employer Identification Number.

LegalGlass provides general information for educational purposes and is not legal advice, is not a law firm, and is not a substitute for advice from a licensed attorney or tax professional. Laws, fees, and thresholds change; verify current amounts with the Louisiana Secretary of State and the Louisiana Department of Revenue before acting.