Window Tinting in California (2023)

In California, the window tint law is set by the California Department of Motor Vehicles (DMV). The law specifies the maximum amount of light that can pass through the windows of a vehicle. The law applies to the front windshield, the front side windows, and the back side windows, but not to the rear window or the windows on the back of the vehicle.

For the front windshield, the law allows for a 50% VLT (Visible Light Transmission) tint on the top 6 inches of the windshield. For the front side windows and the back side windows, the law allows for a minimum VLT of 50%. The rear window must have a VLT of at least 50% if the vehicle is equipped with outside rearview mirrors on both sides, or a VLT of at least 35% if the vehicle is not equipped with outside rearview mirrors on both sides.
It is illegal to apply any material to the windows of a vehicle that significantly reduces the visibility of the driver or passengers. The law also prohibits the use of reflective materials on the windows of a vehicle, with the exception of a small strip of reflective material on the top edge of the front windshield.
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There are some exceptions to the window tint law in California. For example, vehicles that are used for law enforcement, firefighting, or emergency medical services are not subject to the window tint law.