To start a sole proprietorship in Louisiana, you register your business name, get a federal tax ID, sign up with the Louisiana Department of Revenue, and pick up whatever local or professional licenses your work requires. No separate legal entity gets created, so setup is quick, but you and the business are the same person in the eyes of the law. That means your personal assets are exposed to any business debt or lawsuit from day one. Most of the filings run through Louisiana’s geauxBIZ portal, and a typical owner can finish the whole setup in a few weeks.
Register Your Business Name
If you operate under any name other than your own legal name, Louisiana wants two separate filings. Skip either one and you can lose the name or run into trouble with banks and licensing offices.
File a DBA With the Parish Clerk of Court
Louisiana law requires anyone doing business under an assumed name to file a certificate with the clerk of court in the parish where the business operates. The certificate lists the name you intend to use along with your full legal name and mailing address.1Justia. Louisiana Revised Statutes Title 51-281 – Registration Condition Precedent to Licensing In New Orleans, you file with the register of conveyances instead. This parish-level filing, commonly called a DBA, is not handled by the Secretary of State’s office.2Louisiana Secretary of State. Frequently Asked Questions – File Business Documents Call your parish clerk for the form and fee, which vary by parish.
Register a Trade Name With the Secretary of State
Separately from the parish DBA, you can register your business name as a trade name with the Louisiana Secretary of State. This gives you statewide name protection and creates an official record that stops other businesses from registering the same or a confusingly similar name. The Secretary of State issues a certificate only if the name is distinguishable from existing trade names, LLCs, and corporate names already on file.3Louisiana Secretary of State. Application to Register Trade Name Trademark or Service Mark
Submit the application online through geauxBIZ or mail a paper form to the Secretary of State’s Commercial Division in Baton Rouge.4Louisiana Secretary of State. Start a Business The fee is $75 per trade name, with expedited options available for an added charge, and credit card payments carry a $5 convenience fee.5Louisiana Secretary of State. Get Forms and Fee Schedule Standard filings usually clear within a few business days. Keep the certificate; you’ll need it for tax registrations and local licenses.
Search the Secretary of State’s online database first to confirm the name is available. The application asks for your full legal name, mailing address, a description of your business activity, the date you first used the name in Louisiana, and the exact name as you plan to use it. Incomplete or inaccurate information gets rejected.
Get an Employer Identification Number
Sole proprietors can use their Social Security number for tax purposes, but you’ll need a separate Employer Identification Number (EIN) from the IRS to hire employees or open a business bank account.6Internal Revenue Service. Employer Identification Number It’s free, it takes a few minutes on the IRS website, and it keeps your Social Security number off routine business paperwork.
The EIN is usable as soon as it’s issued. Banks ask for it when you open a dedicated business checking account. You aren’t legally required to keep separate accounts as a sole proprietor, but mixing personal and business money makes deductible expenses hard to track and invites problems in an audit.
Register With the Louisiana Department of Revenue
Every sole proprietor doing business in Louisiana registers with the Louisiana Department of Revenue (LDR). Use the Louisiana Taxpayer Access Point (LaTAP) if you’ve already registered with the Secretary of State, or handle it through geauxBIZ when you set the business up initially.7Louisiana Department of Revenue. Business Registration Registration produces a Louisiana Revenue Account Number that you’ll use on every state tax filing.
Income Tax
Louisiana taxes sole proprietorship income on your personal return at a flat 3% starting in 2025, replacing the older graduated brackets.8Louisiana Department of Revenue. What Are the Individual Income Tax Rates and Brackets Your net profit flows onto your personal Louisiana return. There is no separate business-level income tax to file.
Sales Tax
If you sell tangible goods or taxable services, you have to collect and remit Louisiana sales tax. The state rate is 5%, and local parishes and municipalities add their own rates on top, ranging from 0% to 8.5% depending on where you are. Register for a sales tax account through LaTAP and check with your parish tax collector for local registration. Failing to collect or remit brings penalties and interest.
Employer Taxes
Hiring employees means registering for state income tax withholding through the LDR so you can deduct the right amounts from paychecks.7Louisiana Department of Revenue. Business Registration You also register with the Louisiana Workforce Commission for state unemployment insurance. If you’re working solo, neither registration applies to you.
Get Local Licenses and Permits
Occupational License
Most Louisiana parishes require an occupational license before you can start operating. It’s usually issued by the parish government office, sometimes coordinated with the sheriff’s office for sales tax clearance. Fees vary. In some parishes the initial fee is a flat amount around $25 to $50, with additional tax based on your first month’s gross receipts. Contact your parish government office for the process that applies to you. Operating without the license can lead to fines or a forced closure.
Zoning and Home-Based Business Permits
Planning to work from home? Your municipality may have zoning rules restricting or prohibiting certain commercial activities in residential areas. Many cities require a home-based business permit to confirm your operations won’t create excessive noise, traffic, or safety issues. Check with your city hall or planning commission before you start. Finding a zoning problem after you’ve bought equipment or inventory is an expensive lesson.
h2>Check Whether Your Profession Needs a State License
Some professions require a state-issued license before you can legally work, regardless of business structure. Louisiana maintains individual licensing boards for dozens of regulated fields.9Louisiana.gov. Licenses Common examples:
- Contractors. Commercial projects of $50,000 or more and residential construction over $50,000 need a license from the Louisiana State Licensing Board for Contractors. Home improvement on existing structures is regulated at a lower threshold.10Louisiana State Licensing Board for Contractors. Types of Licenses
- Real estate agents and brokers, through the Louisiana Real Estate Commission.
- Cosmetologists and barbers, through the Board of Cosmetology and Board of Barber Examiners.
- Certified Public Accountants, through the State Board of Certified Public Accountants.
- Healthcare providers, each under their respective state boards.
- Plumbers, through the State Plumbing Board.
Operating in a regulated profession without the required license can bring fines, criminal charges, and unenforceable contracts. If your field isn’t listed, check the full directory on Louisiana.gov or ask your industry’s trade association.
Plan for Federal Self-Employment Tax
On top of Louisiana taxes, sole proprietors owe federal self-employment tax on net business earnings of $400 or more. This tax funds Social Security and Medicare and takes the place of the payroll taxes an employer would normally split with you. The combined rate is 15.3%: 12.4% Social Security and 2.9% Medicare.11Internal Revenue Service. Topic No. 554 Self-Employment Tax You calculate the tax on 92.35% of net earnings and can deduct half of what you pay when figuring your adjusted gross income.
The Social Security portion applies only to the first $184,500 of net self-employment earnings in 2026.12Social Security Administration. Contribution and Benefit Base Earnings above that still owe the 2.9% Medicare tax.
Since nobody withholds tax from your income, you make quarterly estimated payments directly to the IRS. For the 2026 tax year, the deadlines are April 15, June 15, September 15, and January 15, 2027. Missing them triggers an underpayment penalty even if you pay in full at filing time. Most sole proprietors use IRS Form 1040-ES to estimate each quarter’s payment.
Understand Your Personal Liability
This is the tradeoff that shapes everything else. Because no separate legal entity exists, you are personally responsible for every business debt, lawsuit, and obligation. If a customer sues or a supplier demands payment, creditors can reach your personal bank accounts, your home, your car. There is no legal wall between business and personal finances.
That risk makes insurance a serious consideration. A general liability policy covers injuries on your premises or from your product. Professional liability coverage (sometimes called errors and omissions) applies if your advice or services cause a client financial harm. Cost depends on industry and revenue, but even a basic policy can keep one incident from wiping out your savings. Talk to an insurance agent who works with small businesses in your field.
Keep Your Trade Name Registration Current
A trade name registration with the Secretary of State lasts ten years. You can renew for another ten-year term by filing a renewal within six months before the expiration date.13Justia. Louisiana Revised Statutes Title 51-216 – Duration and Renewal The renewal fee is $50.14Louisiana Secretary of State. Fee Schedule Let it lapse and someone else can register the same name, taking your statewide protection with it. Put the expiration date somewhere you’ll actually see it. The state doesn’t send reminders.
Your parish DBA may have its own renewal or update rules, which vary. If you move to a different parish, change your business name, or change what your business does, update both the parish filing and the state registration so your records line up.