NC Window Tint Law Change: 35% Limit, Permits, and Penalties

North Carolina’s window tint law changed on December 1, 2025. The darkness limits stayed the same: at least 35% of visible light must pass through most windows. What changed is enforcement. Annual safety inspections no longer include a tint check, and drivers with tinted windows now have to roll down the window whenever a law enforcement officer approaches the vehicle.

What Changed on December 1, 2025

Senate Bill 43 removed tint testing from the annual safety inspection. Before the change, a certified mechanic used an approved light meter to measure your windows during inspection, and that test added $10 to the bill. Inspection stations no longer perform that check and no longer charge the fee.¹

The same bill added a new obligation. If your vehicle has tinted windows, you must roll down the driver-side window as soon as a law enforcement officer approaches. If the officer approaches from the passenger side, that window has to come down instead.² The statute doesn’t set a specific distance; the trigger is the approach itself.

The roll-down rule applies whether or not your tint is legal. Even windows well within the 35% threshold are covered. And while the inspection backstop is gone, tint laws are still enforceable. Officers can pull you over for illegal tint and issue a citation at the roadside.

The 35% Darkness Limit

Every window on a standard passenger car, other than the windshield, must let at least 35% of visible light through the combined glass and film. North Carolina measures this as total light transmission, so factory glass tint counts toward the number. If your car came with glass that already blocks some light, any film you add has to account for that.²

There’s a measurement buffer built into the rule. If an officer’s state-approved light meter reads above 32%, the window is legally presumed to meet the 35% standard. The three-point cushion exists because meter readings can drift with temperature, humidity, and film age.² Aiming above the minimum at installation gives you room as the film ages.

Reflectance and Color Rules

Two limits apply to the film itself. Light reflectance cannot exceed 20%, so windows can’t function like mirrors. The film must also be nonreflective and cannot be red, yellow, or amber, because those colors could be mistaken for traffic signals or emergency lights.²

Windshield Rules

The windshield has a stricter standard. Tint is allowed only along the top and cannot extend more than five inches down from the top edge or below the manufacturer’s AS-1 line, whichever measurement is longer. The AS-1 line is a small mark etched into the glass during manufacturing. If your windshield doesn’t have a visible AS-1 mark, the five-inch limit controls.²

One exception: a clear, untinted film across the whole windshield is allowed if it doesn’t obstruct vision and its purpose is blocking ultraviolet radiation. UV-blocking film is legal statewide as long as it stays transparent.³

Vehicles With Different Standards

The 35% VLT limit and the 20% reflectance cap don’t apply to every vehicle type. The windshield rule, however, applies to all vehicles without exception. Categories exempt from the darkness and reflectance limits include:²

Multipurpose vehicles, meaning SUVs, minivans, and pickup trucks, but only for windows behind the driver. Front side windows still have to meet the 35% standard. The statute defines a multipurpose vehicle as a passenger vehicle carrying 10 or fewer people that is built on a truck chassis or designed for occasional off-road use.
Limousines, all side and rear windows.
Motor homes, all windows.
Ambulances, all non-windshield windows.
Law enforcement vehicles, all non-windshield windows.
Property-hauling vehicles, rear window only. Side windows still follow standard rules.
Excursion passenger vehicles, all non-windshield windows.
Vehicles registered in another state, if the tint meets that state’s requirements.

The out-of-state category matters if you’re driving through or moving in. A vehicle registered elsewhere and legal there won’t draw a North Carolina citation. Once you register the vehicle in North Carolina, it has to meet North Carolina standards.²

Medical Exception Permits

Drivers with a medical condition involving photosensitivity can apply for a permit that allows darker tint. Start with a physician licensed in North Carolina, who provides a written statement documenting the condition, the medical necessity, and how long the exception is needed. The doctor’s license number and contact information should be included so the state can verify.⁴

Submit the completed form and a $5 application fee to the NC Division of Motor Vehicles Medical Review Unit in Raleigh. Once approved, DMV issues a medical exception permit. Keep it in the vehicle. Failing to display the required sticker is itself an infraction carrying a $200 fine, even when the medical need is legitimate.²

The waiver application does not mention honoring medical tint permits from other states. If you have one from another state and move here, plan on applying separately.

Penalties for Illegal Tint

Driving with non-compliant tint, or installing it, is a Class 3 misdemeanor under North Carolina law.² That classification applies both to the installer and to the driver. A Class 3 misdemeanor is the lowest-level misdemeanor in North Carolina, but it is still a criminal charge rather than a traffic infraction.

The penalty didn’t change with the December 2025 update. The enforcement path did. Before, a failed inspection forced you to fix non-compliant tint before renewing your registration. That checkpoint is gone. Enforcement now happens through traffic stops, which makes a citation more likely to arrive as a surprise. If your tint is darker than what the law allows, fixing it now avoids a roadside encounter where the tint citation and the new roll-down obligation both come into play at once.

1
North Carolina General Assembly. North Carolina Senate Bill 43 – Window Tint Inspection Approach of LEO
2
North Carolina General Assembly. North Carolina Code GS 20-127 – Windows and Windshield Wipers
3
North Carolina General Assembly. North Carolina Code GS 20-127 – Windows and Windshield Wipers
4
North Carolina Department of Transportation. NC Division of Motor Vehicles Tinted Window Waiver