California window tint laws
A plain-English summary of the rules for tinting a car in California. Always confirm with the current vehicle code.
Quick answerIn California, front side windows must let in at least 70% of light (glass plus film), the windshield can have non-reflective tint on the top 4 inches only, and rear side and rear windows can be any darkness if the car has both side mirrors (Vehicle Code section 26708).
Rules at a glance
| Window | California rule |
|---|---|
| Front side windows | At least 70% light transmission, glass and film combined |
| Windshield | Non-reflective tint on the top 4 inches only |
| Rear side windows | Any darkness |
| Rear window | Any darkness if the vehicle has both side mirrors |
This is general information, not legal advice. Laws change and details differ by vehicle, so check the current California Vehicle Code (section 26708) or ask us. Many customers choose a lighter front film for heat rejection and a darker shade on the rear. See our window tint options.
California tint law questions
How dark can I tint my front side windows in California?
California requires front side windows to let in at least 70% of light, measured with the glass and film together (California Vehicle Code section 26708).
Can I tint my rear windows darker in California?
Yes. Rear side windows and the rear window can be tinted darker if the vehicle has both left and right side mirrors.
Can I tint my windshield in California?
California allows a non-reflective tint on the top 4 inches of the windshield. The rest of the windshield must stay clear.
Is there a medical exemption for window tint in California?
California has a medical exemption process that requires documentation from a licensed physician. Ask your doctor and keep the paperwork in the vehicle. Talk to us before you buy film for an exemption.
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