Read the Latest Blogs for About Window Tinting, Paint Protection Film, and Expert Tips

California has specific rules when it comes to car window tinting, especially for front windows. Front side windows must allow more than 70% of visible light to pass through (70% VLT). However, rear side windows and the back windshield can have darker tint levels if your vehicle is equipped with dual side mirrors. For the windshield, only the top 4 inches may be tinted, and the film must be non-reflective. California Window Tint Laws Explained (2026) Here’s a quick and easy breakdown of California tint regulations: Windshield: Tint is only permitted on the top 4 inches and must be non-reflective Front Side Windows: Must allow at least 70% of light inside Rear Side Windows: Any tint darkness is allowed Rear Windshield: Any darkness is legal with dual side mirrors installed Keep in mind, tint percentage works opposite to what many drivers think lower VLT percentages create darker tint, while higher percentages result in lighter window film.