If you’re planning to sell taxable goods or services in Louisiana, obtaining a Louisiana sales tax permit is a legal requirement. Whether your business is physically located in the state or you’re an out-of-state ecommerce seller crossing the economic nexus threshold, you must register with the Louisiana Department of Revenue (LDR). This guide walks you through everything you need to know about Louisiana sales tax registration in 2026.
What Is a Sales Tax Permit in Louisiana?
A Louisiana sales tax permit (officially called a “Sales Tax Certificate”) gives your business the authority to collect sales tax on transactions within the state. It applies to both physical sellers operating in Louisiana and remote sellers doing business with Louisiana customers.
In 2026, any business, whether in-state or out-of-state, that meets the economic nexus threshold must register. This includes marketplace sellers, ecommerce brands, and businesses participating in short-term events like trade shows or pop-ups.
Do You Need to Register for a Sales Tax Permit in Louisiana?
You need to register if you meet any of the following conditions:
- You have a physical presence in Louisiana (store, warehouse, office, employee)
- You participate in trade shows or other in-state events
- You make taxable retail sales to Louisiana customers
- You are a remote seller who exceeds $100,000 in gross sales or 200 separate transactions in Louisiana in the previous or current calendar year
- You operate as a marketplace facilitator, collecting sales tax on behalf of third-party sellers
Even if you do not live in the state, Louisiana remote seller sales tax registration is still required once you meet the nexus threshold.
Step-by-Step: How to Get a Sales Tax Permit in Louisiana
Here’s a breakdown of how to apply for a sales tax permit in the state of Louisiana.
1. Gather Required Business Information
You’ll need the following before starting the application:
- Federal Employer Identification Number (EIN) or SSN for sole proprietors
- Legal business name and DBA (if applicable)
- Business structure (LLC, Corporation, Sole Proprietor, etc.)
- Physical and/or mailing address
- Contact information for owners or responsible parties
- Projected Louisiana monthly or annual sales
- NAICS code for your industry
2. Register Online via GeauxBiz
Louisiana’s business registration system is available at GeauxBiz.louisiana.gov. This portal allows you to create an account and register with the Louisiana Department of Revenue.
3. Complete the Sales Tax Registration Application
After logging into GeauxBiz, complete the application for state sales tax. Be sure to select “Sales Tax” as a tax type during the registration process.
4. Submit Your Application
After reviewing your details, submit the application. Be precise to avoid delays, incorrect NAICS codes or contact details can trigger rejections or requests for additional documentation.
5. Receive Your Louisiana Sales Tax Certificate
Once approved, you’ll receive a Sales Tax Account Number and a certificate by mail or email. You’re now required to begin collecting tax from Louisiana customers and file returns as scheduled.
What Information Do You Need to Register?
Being prepared with the right documentation helps streamline your Louisiana sales tax registration.
Business Entity Details
- Legal name and ownership structure
- EIN or SSN
- Business start date in Louisiana
Contact Information
- Business address (physical and/or mailing)
- Business phone number and email
- Responsible party information
Tax Information
- Estimated monthly sales in Louisiana
- NAICS classification code
- Details of any existing tax accounts with the Louisiana Department of Revenue
How Much Does It Cost to Register for a Sales Tax Permit in Louisiana?
Registering for a sales tax permit in Louisiana is free. However, depending on your business type, you may also need to register with your local parish, which could carry additional fees or requirements.
Louisiana uses a parish-based sales tax system, which means in addition to the statewide rate, you may also be responsible for collecting and remitting local sales taxes. This makes compliance more complex than in many other states.
Related: Understand physical and economic nexus
How Long Does It Take to Get Approved?
Most online applications are processed within 3 to 7 business days. If further verification is needed, or if your application is incomplete, expect delays. You’ll be notified via email when your certificate is issued.
What Happens After You Register?
Once your application is approved:
- You’re authorized to begin collecting sales tax in Louisiana
- You’ll receive login access to the Louisiana Taxpayer Access Point (LaTAP) portal
- The Department of Revenue will assign your filing frequency (typically monthly or quarterly)
- You must file even if you collected no sales tax during a filing period (a zero return is still required)
- You’re expected to keep detailed sales and tax records for at least four years
Related: Sales tax remittance explained
Common Mistakes to Avoid
Here are some common pitfalls to watch for during registration or filing:
- Incorrect EIN or legal name entries
- Failure to register local parish accounts (when required)
- Ignoring remote seller sales tax registration Louisiana thresholds
- Missing filing deadlines or neglecting to file zero returns
- Assuming sales through a marketplace exempts you from registration (you may still need to register)
Special Considerations for Remote Sellers and Marketplace Sellers
Remote sellers must register once they meet the $100,000 gross sales or 200 transactions threshold in the state. Louisiana does not offer a grace period, compliance is expected immediately upon crossing the threshold.
Marketplace facilitators like Amazon or Walmart are responsible for collecting and remitting sales tax on behalf of their third-party sellers. However, if you also sell through your own website or another platform, you still may be required to register independently.
For these sellers, managing tax compliance across Louisiana’s multiple jurisdictions can be particularly challenging.
Resources & Where to Register
- Register online: GeauxBiz Portal
- Manage your account: LaTAP Portal
- Sales tax help: Louisiana Department of Revenue – Sales Tax
- Customer support: 855-307-3893
Simplify Louisiana Sales Tax Compliance with Commenda
Navigating Louisiana’s complex sales tax system, with both state and parish-level requirements, can be overwhelming, especially for remote or multichannel sellers.
Commenda simplifies the process by helping you:
- Register for sales tax permits in Louisiana and other states
- Track economic and physical nexus across all jurisdictions
- Automate recurring filings and remittances
- Stay up to date with Louisiana’s state and parish rules
Our platform is built for ecommerce, SaaS, and cross-border businesses that need an efficient way to stay compliant.
Frequently Asked Questions (FAQs)
Do I need to register with both the state and the parish in Louisiana?
Yes, Louisiana has a unique parish-level tax system. While the state handles the sales tax permit through the Department of Revenue, some parishes require separate local sales tax registration.
Can I collect sales tax before I receive my permit?
No. You must wait until you are issued a valid Louisiana Sales Tax Certificate before collecting tax from customers.
How often do I need to file sales tax returns in Louisiana?
Most businesses are assigned a monthly or quarterly filing frequency, depending on sales volume. The Department of Revenue will inform you after registration.
What if I only sell online and do not have a physical location in Louisiana?
If you meet the economic nexus threshold, you must register as a remote seller and collect Louisiana sales tax. The thresholds are $100,000 in gross revenue or 200 or more transactions annually.
Can Commenda help me register and stay compliant in Louisiana?
Yes. Commenda handles end-to-end sales tax compliance, including Louisiana-specific registration, local tax remittance, and multi-state management. No spreadsheets or guesswork required.
