Louisiana's front-window tint rule got noticeably more permissive in 2025: front side windows now need only 25% VLT, down from the 40% floor that applied for decades, while the rear numbers didn't move. This came from 2025 House Bill 119 (Act 143), which amended R.S. 32:361.1(C)(1) and took effect August 1, 2025 — a shop still quoting the old 40% front number is quoting a law that no longer exists.
Louisiana VLT limits by window
- Front side windows (driver + front passenger), all vehicles: at least 25% VLT (changed from 40% by 2025 HB 119, effective August 1, 2025).
- Side window behind the driver (rear side/door window): at least 25% VLT on passenger cars — unchanged by the 2025 law. Trucks, buses, trailers, motor homes, and multipurpose passenger vehicles are exempt from this floor entirely (the statute doesn't name SUVs or define the term, so confirm a vehicle qualifies) — any darkness is legal there.
- Rearmost window (back glass): at least 12% VLT on passenger cars — also unchanged. Same exemption applies to trucks, buses, trailers, motor homes, and qualifying multipurpose passenger vehicles.
- Reflectance: capped at 20% luminous reflectance on every sun-screening device, on every window.
- Windshield: nonreflective tint only, limited to the top 5 inches.
Medical exemptions
Louisiana allows a medical exemption under R.S. 32:361.2 for a documented condition certified in writing by a physician — ophthalmologists and dermatologists are specifically recognized certifiers for light-sensitivity conditions. The documentation has to stay in the vehicle.
Enforcement and penalties
Driver penalties escalate with each offense: up to $150 for a first violation, $250 for a second, and $350 for a third or subsequent one. Louisiana also fines installers directly and separately from drivers — a shop that applies noncompliant tint faces a $1,000 fine for a first violation and $2,000 for a second, and a third violation can cost the installer their authorization to apply window tint in the state at all.
What this means when you're quoting a job
Louisiana just moved the goalposts on the one number every shop has memorized — front side windows dropped from 40% to 25% in August 2025 — so a menu or quote template that hasn't been updated is now selling customers a darker legal film than it thinks it's allowed to, or worse, still quoting the old 40% as if it's the ceiling. The installer-specific fine schedule (up to $2,000 per violation, with a third offense risking the shop's ability to install tint at all) makes this a business-continuity issue, not just a customer-ticket risk. A window tint shop software tool that pulls Louisiana's current 25%/25%/12% numbers — not the pre-2025 ones — protects both the shop's authorization and the customer.
Frequently asked questions
What is the current legal tint limit in Louisiana? Front side windows need at least 25% VLT (changed from 40% in August 2025). The side window behind the driver needs 25% VLT and the rearmost window needs 12% VLT on passenger cars — both unchanged by the 2025 law. Trucks, buses, trailers, motor homes, and qualifying multipurpose passenger vehicles are exempt from the rear-window floors.
Did Louisiana's window tint law change recently? Yes. 2025 House Bill 119 (Act 143) lowered the front side window minimum from 40% VLT to 25% VLT, effective August 1, 2025. The rear-window numbers (25% side, 12% rearmost) weren't changed.
Can a shop get fined separately from the customer in Louisiana? Yes. Installers face their own fine schedule — $1,000 for a first violation and $2,000 for a second — separate from and in addition to the driver's citation, and a third violation can cost the shop its authorization to install tint.
Is any-darkness rear tint legal in Louisiana? Only on trucks, buses, trailers, motor homes, and qualifying multipurpose passenger vehicles. Passenger cars are held to 25% (side) and 12% (rearmost).
What's the reflectance limit in Louisiana? 20% luminous reflectance on every sun-screening device, on every window.
This is general information based on Louisiana's public statutes and reporting on R.S. 32:361.1 and 2025 HB 119 (Act 143), not legal advice — enforcement can vary and laws change over time, so confirm specifics with Louisiana State Police or a licensed attorney before you install, buy, or contest a citation.
Related
- State-by-state window tint laws (VLT limits) - Louisiana shop market + VLT summary - Window tint percentages: what VLT, 5%, 20%, 35% mean - Window tint laws by state: the 2025 reference