Texas window tint law sets 25% VLT as the floor for the front side windows: glass and film together must let at least 25% of visible light through. The windshield may carry a 25% strip only above the AS-1 line, the rear side windows have no limit, and the back glass has no limit if the car has outside mirrors on both sides.

That makes Texas one of the more relaxed states in the country, next to California or New York, which want 70% on the front doors. It also means Texas drivers ask for dark film, and the shop has to know where the line is.

Texas window tint law: the rules by window

These are the passenger vehicle rules as the Texas Department of Public Safety (DPS) publishes them, under Transportation Code 547.613.

VLT stands for Visible Light Transmission. A 25% reading means a quarter of the light outside reaches the cabin.

DPS also requires a compliance label on the rearmost bottom corner of the driver's side window. It must say "Complies with TRC Chapter 547" or "Complies with TTC 547.613 (b)." A label on the passenger side is optional, and the installer's name on it is optional.

The 25% rule and what happened to the inspection

For years the front doors were metered at the annual state safety inspection, and a car under 25% failed. That changed on January 1, 2025. Under House Bill 3297, most non-commercial vehicles no longer need a safety inspection to register; owners pay a program replacement fee instead. Commercial vehicles still get inspected, and emissions testing continues in the larger metro counties.

The law itself did not change. An officer can still meter the front doors at a traffic stop and write a ticket. What changed is that a too-dark front door no longer gets caught every year at the inspection station, so the driver finds out at the roadside instead. Either way, the car usually comes back to the shop that put the film on.

25% film on factory glass reads darker than 25%

Texas measures the window as it sits, factory glass included, and no factory glass is perfectly clear. Put a 25% film on a typical front door and the meter will read below 25%. That car is illegal on day one.

So most Texas shops use a 30% or 35% film on the front doors and meter the result before the car leaves. A dark 5% or 15% film behind the driver gives the car the look owners want, and the front doors stay legal.

What Texas heat means for the film you stock

Summer cabins in Dallas, Houston and Austin get hot fast, and Texas drivers buy tint mostly for heat. Darkness alone does not stop heat. A ceramic film at 30% on the front doors can reject more infrared heat than a cheap dyed film at 15%, and only one of those is legal.

Heat is also the test the film gets every day. Dyed films can fade and turn purple after a few summers in strong sun, and a weak adhesive can let go and bubble. A shop that installs those films ends up redoing them for free. When you choose a supplier, ask for samples, install them on a test car parked in the sun, and see how the color and the bond hold.

Texas has a lot of trucks and large SUVs with big, curved back glass. A film that heat-shrinks evenly saves real time on an F-150 rear window. That is worth checking on a sample before you order a full roll.

Medical exemptions under Texas tint law

Drivers who need darker front windows for medical reasons can get them. Texas requires a signed statement from a licensed physician or licensed optometrist that names the driver or passenger and says the tint is needed to protect their health. DPS stopped issuing its own exemption certificates on January 1, 2019, so the signed statement is the proof. The driver keeps it in the car and shows it to an officer on request.

Taxis, limousines, buses and law enforcement vehicles are also exempt. For anyone else, darker than 25% on the front doors is a citation waiting to happen.

How a Texas tint shop protects itself

The driver gets the ticket, but the shop gets the callback and the bad review. Meter every front door after install, write the film code and the reading on the work order, apply the DPS label, and say no to 15% on the front doors unless the customer has a medical statement. A clean record settles most arguments before they start.

HIGHCOOL makes window film by the roll in its own 20,000 m² factory in Shanghai and sells it straight to shops, with no distributor in between. Window Film ships from China in 60 in x 98 ft (1.52 m x 30 m) rolls. For Texas front doors, the shades that fit the advice above are WV30 and WU30, both nano ceramic at a nominal 30% VLT with a 7-year warranty. Behind the driver, WU05, WU15 and WV20 give the dark look, and the dyed WA05 and WA18 (1.5 mil, 5-year warranty) cover the budget end. None of our window films are metallized, so toll tags and phone signal are not an issue. We also offer OEM and private label, with an MOQ of 30 rolls per model, for shops that want their own brand on the box. More installer guides are on the HIGHCOOL blog.

If you tint in Texas and want to compare our ceramic shades on your own glass, ask for free A4 samples of HIGHCOOL Window Film and meter them before you buy a roll.

FAQ

Can I put clear film on my whole windshield in Texas?
Yes, if the film is clear and untinted. DPS allows clear UV film anywhere on the windshield without a medical exemption. Tinted film is still limited to the strip above the AS-1 line or the top 5 inches.

How is the 25% VLT rule measured in Texas?
It is measured on the window as installed, with the factory glass and the film together. Officers use a tint meter on the front side windows, and the reading must be 25% or higher. Because factory glass blocks some light, a 25% film usually reads below 25% once it is on the car.

Are rear windows on Texas trucks and SUVs restricted?
No, as long as the vehicle has outside mirrors on both sides. Rear side windows have no darkness limit at all, and the back glass has none when both mirrors are present. Without both mirrors, the back glass must meet the same 25% limit as the front doors.