Every tint shop owner gets the same question 10 times a day: "How dark can I legally tint my windows?" The answer depends on your state, your vehicle type, and how strict your county enforces. Here's the operator-friendly reference.
How to read tint law specs
Three numbers + one position:
- Front side VLT % — the legal minimum Visible Light Transmission for front side windows
- Rear side VLT % — for rear side windows
- Back glass VLT % — for the rear window
- Windshield strip — the position of the highest legal windshield film (usually the AS-1 line, about 5-6 inches below the top)
Lower VLT % = darker tint. A 35% VLT film lets 35% of visible light through. A 20% VLT film lets only 20% through.
The headline categories
Strictest states (front side ≥ 50% VLT)
- New Jersey: NO aftermarket tint on front side windows at all (only a windshield strip is allowed)
- Michigan: front side windows and windshield limited to a 4-inch top strip, not a VLT percentage — full breakdown
- Vermont: NO aftermarket tint on front sides
- California, New York, Pennsylvania, Hawaii: 70% — New York, Pennsylvania breakdowns
- New Hampshire, Iowa: 70%
- Virginia: 50% — full breakdown
- Illinois: 50% paired with a 30% rear, or 35% paired with 35% rear (passenger cars) — full breakdown
Moderate states (front side 30-49% VLT)
- Texas: 25%
- Florida: 28% (sedans), down to 6% on rear windows of trucks/vans/SUVs
- Arizona: 33%
- Georgia: 32% flat today — a bill (HB 1161) would split it to 28%/15%, but that change is delayed to July 1, 2027
- Maryland: 35% on every window for sedans, front-only for SUVs/vans — full breakdown
- Louisiana: 25% as of an August 2025 law change (was 40%) — full breakdown
- Colorado: 27% on every window but the windshield — full breakdown
Permissive states (front side < 25%, or any darkness with caveats)
- Most western states allow lower VLT% on front sides
- "Any darkness" on rear sides + back glass is common across permissive states
Multi-purpose vehicle exceptions
Many states allow darker tint on rear sides + back glass of "multi-purpose vehicles" (SUVs, trucks, vans) than on sedans. This is hugely important at the quote-builder stage — your software should know the vehicle category before quoting.
Medical exemptions
Most states allow medical exemptions that override the standard VLT minimums. The process varies:
- Some states require a physician's letter
- Some require a state-issued waiver certificate
- The shop should keep a copy of the exemption with the customer record
Enforcement reality
The legal limit and the enforced limit aren't always the same. From operator reports across our customer base:
- Strict enforcement: New Jersey, California (LA/SF metros), New York (NYC metro), Florida (Miami-Dade, Broward), Texas (Harris, Dallas counties)
- Moderate enforcement: most state DOTs run periodic checkpoints, especially during inspection-renewal periods
- Light enforcement: rural counties + most of the Mountain West rarely stop drivers for tint alone
Where this lives in SalesThumb
Each state has its own page on our site with current VLT specs + enforcement notes:
Our quote builder warns operators if they're quoting a darkness below the state's legal minimum so the front desk never accidentally puts the shop in violation.
Recent law changes
State tint law isn't static — a handful of states amend enforcement rules most years even when the VLT numbers themselves don't move. Example: North Carolina's window tint law changed on December 1, 2025 — tint checks came out of the annual inspection and a new roll-down-for-officers rule went in, while the 35% VLT limit stayed exactly where it was. Georgia's tint law is set to change, but not yet — HB 1161 would split the old flat 32% VLT limit into 28% for front windows and back glass and a much darker 15% for rear side (door) windows only, but Georgia's DPS and multiple news outlets confirm that change is delayed to July 1, 2027, so today's law is still the flat 32%. Louisiana's law changed too — 2025 House Bill 119 cut the front-window floor from 40% to 25% VLT effective August 1, 2025, while the rear side stayed at 25% and the back glass sits separately at 12%.
Full state-by-state reference guides
For the states where operators ask the most questions, we've published a dedicated reference with the current VLT limits, windshield rules, reflectance caps, medical exemptions, and citation fines, sourced to the actual statute: Colorado (C.R.S. 42-4-227), Illinois (625 ILCS 5/12-503), Louisiana (R.S. 32:361.1), Maryland (Transportation Code 22-406), Michigan (MCL 257.709), New York (VTL 375(12-a)), Pennsylvania (75 Pa.C.S. 4524), and Virginia (Code 46.2-1052).
Full state-by-state reference guides
For the states where operators ask the most questions, we've published a dedicated reference with the current VLT limits, windshield rules, reflectance caps, medical exemptions, and citation fines, sourced to the actual statute: Texas (Transportation Code 547.613), Florida (Statutes 316.2953 & 316.2954), California (Vehicle Code 26708), Ohio (Revised Code 4513.241), and Arizona (A.R.S. 28-959.01).
A note for car owners
This page is a general reference, not legal advice. State laws change. Always verify with your state's DOT before quoting work — and ask your shop to verify before they start your install. Shops in business 5+ years almost always know their state's rules; new shops sometimes don't.