If your boat runs on Louisiana public waters, you must register it with the Louisiana Department of Wildlife and Fisheries (LDWF) and display the assigned number. That covers motorboats, sailboats 12 feet or longer, and non-motorized houseboats. Registration lasts three years, the certificate stays on board, and the number goes on the hull in plain 3-inch block letters starting with "LA."
TL;DR:
- LDWF applies a primary use test: register in Louisiana if the boat spends more time on its public waters than on any other state’s waters.
- Boats used exclusively on private ponds are exempt, while small sailboats under 12 feet and sailboards often fall outside registration requirements.
- Gather proof of ownership, the hull identification number, and applicable tax certification; boats without a hull identification number need an LDWF inspection and fee.
- Watercraft sales tax certification is due by the 20th of the month after purchase, and owners can file through LaTAP or by mail.
- Louisiana numbers allow up to four numerals and two capital letters after LA, exclude I, O, and Q, and separate groups with spaces.
Table of Contents
- Which boats need a Louisiana registration number?
- How do you register a boat in Louisiana?
- What do registration, titles, and sales tax cost?
- How must you display your boat number and decals?
- What is a HIN, and when does LDWF inspect?
- When do you renew, transfer, or request a duplicate?
- What happens if your numbers or paperwork fall short?
- Our take: a simple compliance checklist
- Get compliant Louisiana boat numbers from us
- FAQ
- Sources
Which boats need a Louisiana registration number?
Start with where the boat lives. LDWF applies a "primary use" test: if your boat spends more time on Louisiana public waters than on any other state's waters, it belongs on the Louisiana registry. Your answer to "do I need a boat number in Louisiana" depends on that test and on the type of vessel.
Registration applies to:
- Motorized vessels of any size used on public waters
- Sailboats 12 feet or longer
- Non-motorized houseboats
Small sailboats under 12 feet and sailboards often fall outside the requirement, so check length before you assume you need a number. Vessels used exclusively on private ponds are exempt from registration requirements. Check with LDWF if your boat's use changes.
Kayaks and canoes without motors are a common question. We cover them separately in our answer on whether kayaks and canoes need registration numbers.
How do you register a boat in Louisiana?
Registration is a paperwork job, and it goes faster when you gather everything first. Here is the process.
- Download the Boat Registration/Boat and Motor Title Application from the LDWF registration and permit forms page.
- Collect proof of ownership: a manufacturer's statement of origin, a title, or a bill of sale.
- Locate the Hull Identification Number (HIN) on the transom and write it down exactly.
- Add any tax payment certification that applies to your purchase.
- Submit the packet to your LDWF regional office, or use the online portal at Boat for renewals, duplicates, and many registration tasks.
- Wait for LDWF to issue your registration certificate and two decals.
The LDWF title and registration page lists the exact documents and explains that boats without a HIN need an inspection and an inspection fee. LDWF also launched a digital platform that lets you renew or order duplicates using your registration number and HIN details.
Pro Tip: Photograph your HIN, bill of sale, and ID before you start. Having them open on your phone keeps you from abandoning the online form halfway through.
What do registration, titles, and sales tax cost?
The official application PDF holds the current fee schedule, with registration and title fees organized by boat length. Read the bands there rather than relying on a secondhand chart, since LDWF revises the form periodically.
A title may be required in several situations. Check the LDWF title and registration page for the requirements that apply to your boat or motor.
Tax paperwork matters for purchases and for boats brought into Louisiana. Form R-1331, the Watercraft Sales Tax Payment Certification, certifies that state and local taxes were paid. It is due by the 20th of the month following purchase, and you can file it through LaTAP or by mail as the form instructs.
How must you display your boat number and decals?
LDWF writes the display rules tightly, and inspectors check them by eye. Louisiana law sets the format: the letters "LA," up to four numerals, and up to two capital letters as a suffix. Groups are separated by a hyphen or an equivalent space, and the letters I, O, and Q are never used. A typical number reads LA 1234 AB.
Display requirements:
- Plain block characters, at least 3 inches tall (see our guide to how tall registration numbers need to be)
- A color that contrasts with the hull, light on dark or dark on light, per LDWF's equipment rules
- Check LDWF's display rules for where to place the numbers and decals.
Stylized or cursive fonts risk being unreadable and are an easy way to draw a citation. Our placement answer shows typical bow locations.
Pro Tip: Clean and dry the hull before applying anything. A protected, well-kept finish holds adhesive better, and gelcoat protection guidance is worth a read for fiberglass hulls.
What is a HIN, and when does LDWF inspect?
The Hull Identification Number is your boat's serial number. Boats manufactured or imported after November 1, 1972 carry one, and LDWF uses it for registration, titling, and ownership transfers. Boats without a HIN require an inspection and an inspection fee. Check with LDWF about requirements for an incorrect HIN or a homemade boat. Contact your regional LDWF office to schedule an inspection before you submit your application.
When do you renew, transfer, or request a duplicate?
Keep these timelines in mind:
- Registrations are valid for three years from issuance, and you can renew online.
- If you sell the boat, notify LDWF and check its instructions for the transfer paperwork.
- For a lost certificate or decal, request a duplicate and have your current registration number ready.
- Store the certificate on board in a waterproof container.
What happens if your numbers or paperwork fall short?
Officers look for the physical certificate on board and for numbers they can read from the water. A photo on your phone is not a substitute. Common triggers for a stop include stylized fonts, poor contrast, missing decals, and expired registration. If you are cited, fix it quickly: apply compliant numbers and decals, renew if needed, and keep the paper certificate aboard.
Our take: a simple compliance checklist
Taylor here. Small oversights can create compliance problems. Confirm primary use, check your HIN, register or renew online, apply numbers and decals per LDWF rules, and keep the certificate in a waterproof container. Choose durable, high-contrast materials so the numbers remain easy to read. Gather your documents before you open the application.
— Taylor
Get compliant Louisiana boat numbers from us
We make the display side easy. Our online design tool lets you enter your number, pick colors and a plain block font, and order custom boat registration numbers and decals built to follow LDWF display rules when installed as directed.
- Marine-grade vinyl that resists UV and saltwater
- An online design tool
- Production and shipping details are available when you order.
See our Louisiana decal requirements page and installation guide, then order your set today.
FAQ
Do you need a boat number in Louisiana?
Yes, if the boat is motorized, a sailboat 12 feet or longer, or a non-motorized houseboat used on public waters. You register with LDWF and display the assigned number on the hull.
How are Louisiana boats numbered?
Numbers start with "LA," followed by up to four numerals and up to two capital letters, with hyphens or spaces between groups. The letters I, O, and Q are not used, per state law.
How do you register a boat in Louisiana?
Complete the LDWF Boat Registration/Boat and Motor Title Application with proof of ownership, your HIN, and ID. Submit it to a regional office, or use the online portal for renewals and duplicates.
Do trolling motors require registration?
Whether a particular setup counts as a motorized vessel can depend on the circumstances. Check with LDWF about your boat by consulting the LDWF FAQs or call your regional office for your specific setup.
Sources
- Boat Title and Registration FAQs | Louisiana Department of Wildlife and Fisheries
- Louisiana Laws - Louisiana State Legislature
- Title or Register Your Boat | Louisiana Department of Wildlife and Fisheries
- Required Boating Equipment | Louisiana Department of Wildlife and Fisheries