Quick summary:
| California Tint Laws | |
|---|---|
| Front Windshield | Top 4 inches |
| Front Side Windows | 70% |
| Back Side Windows | No restrictions |
| Rear Windshield | No restrictions |
Last updated on: . Confirmed accurate for 2026. Attorney verified
California tint laws primarily regulate the darkness, but also specify other rules and regulations you need to know about such as reflectiveness or color restrictions. All laws are explained further below.
Window Tint Darkness in California
Window tint darkness is measured in VLT (Visible Light Transmission) percent. VLT indicates how much light passes through both the film and the glass.
Drag the blue slider above to preview tint darkness. In most real world cases, applied tint will appear 10-20% darker compared to our tool.
See: VLT explained with chart and darkness examples
How dark can your window tint be in California?
Here's exactly how much VLT is allowed on your auto window tint in California (CA), categorized by passenger and multi-purpose vehicles.
Tint darkness for passenger vehicles:
- Windshield: No window tint is allowed.
- Front side windows: Must allow more than 70% of light in.
- Back side windows: Any darkness can be used.
- Rear window: Any darkness can be used.
Passenger vehicles include: sedan, coupe, convertible, station wagon, hardtop and hatchback vehicles.
Tint darkness for multi-purpose vehicles (MPV):
- Windshield: No window tint is allowed.
- Front side windows: Must allow more than 70% of light in.
- Back side windows: Any darkness can be used.
- Rear window: Any darkness can be used.
Multi-purpose vehicles include: SUV, pickup, van, truck, RV, and minibus.
AS-1 line typically extends 4-6 inches parallel to the top of your windshield. AS-1 designation line is typically marked in bottom or top edge of your windshield.
Some state tint laws specify exact number of inches you are allowed to tint on front windshields. Other states define this windscreen area simply as an AS-1 line. Learn more about AS-1 Line.
Federal vehicle ID label found on driver's front door frame will tell you whether your vehicle is classified as passenger or multi purpose vehicle.
How reflective can your window tint be in California?
Tinting film may contain metallic elements which help in reflecting incoming light. This reduces glare and heat generated by visible light. Below you can find out how much reflection is permitted on your car window tint film by law in California.
Tint reflection for sedans:
- Front Side windows: Must not be more reflective than a standard window.
- Back Side windows: Must not be more reflective than a standard window.
Tint reflection for SUV and vans:
- Front Side windows: Must not be more reflective than a standard window.
- Back Side windows: Must not be more reflective than a standard window.
Learn about Reflective window tint.
Other California tinting rules and regulations:
Other laws, rules and regulations in California include the following:
Dual side mirrors are required if the rear window is tinted.
California tint laws do not permit using red, amber or blue tint colors.
Film manufacturers need to certify the film they sell in the state, and the driver is required to have the certificate in their possession.
State law requires a certificate or a sticker from the installing company and the manufacturer's name and address.
California law doesn't allow any medical exemptions that would allow using darker tint.
Remember that state tint laws may be interpreted differently by your local law authorities. Get in touch with your county DMV or police department to make sure you are not breaking California window tinting laws, rules and regulations.
Our article about California tint laws is up to date as of 2026. Last change was made on September 29th, 2026 (approximately 2 weeks ago).
You can rest assured our legal experts are immediately notified of changes, and will always update this article with latest legislation when required.
Official law sources:
California Vehicle Code section 26708: Material Obstructing or Reducing Driver’s View
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