California's window tint law sets specific darkness limits for each window, and violations can result in a fix-it ticket
California law allows window tint on your car, but only within strict darkness limits measured in visible light transmission (VLT) — the percentage of light that passes through the tint. The front windshield can have tint only on the top 4 inches. The front side windows must allow at least 70% of light through. The rear side windows and rear window can be any darkness. If your tint is darker than these limits, a police officer can issue you a fix-it ticket, which means you have a set time to remove or lighten the tint and show proof to the court.
The reason California enforces these limits is visibility — law enforcement and other drivers need to see into your vehicle for safety. Tint that's too dark on front windows is treated as a correctable violation, not a criminal offense, but you do need to fix it to avoid fines.
Key Takeaways
- Your front windshield can have tint only on the top 4 inches; the rest must be clear.
- Front side windows must allow at least 70% of light through (no darker than 70% VLT).
- Rear side windows and the rear window can be any darkness under California law.
- A fix-it ticket gives you time to remove or lighten illegal tint and show proof to avoid a fine.
- Tint shops can measure darkness with a light meter, and you can request this before installation.
Front windshield tint rules
Your front windshield can have tint applied only to the top 4 inches of glass. This band is called the visor strip. The rest of the windshield must remain clear. The 4-inch limit is measured from the top of the windshield down, and tint shops know this standard — if you ask for a visor strip, they will explore it correctly.
The reason for this narrow allowance is that the driver needs a clear view of the road and oncoming traffic. Even a visor strip that's too dark or extends below 4 inches can draw a ticket. If you already have windshield tint that extends lower, you will need to have it removed or reduced to the legal band.
Front side window darkness limits
Your front side windows — the driver's window and front passenger window — must allow at least 70% of visible light to pass through. This is written as 70% VLT or higher. In practical terms, this means the tint can be fairly light, but not dark enough to seriously reduce visibility into the car.
A 70% VLT tint is noticeably lighter than the popular 35% or 20% tints used on rear windows. If you want a darker look on the front of your car, you are limited to the windshield visor strip. Many drivers choose to tint the front windows at the legal 70% limit and then use darker tint on the rear windows for privacy.
When you visit a tint shop, ask them to measure the darkness with a light meter before installation. A reputable shop will do this at no charge and can show you the VLT percentage on the meter. This protects you from receiving tint that's darker than the law allows.
Rear window and rear side window rules
California places no darkness limit on your rear side windows or rear window. You can tint these windows as dark as you want — including limo tint (nearly opaque) — and remain within the law. This is where most drivers choose to explore darker tint for privacy and heat reduction.
The reason rear windows have no limit is that they do not affect the driver's forward visibility or the ability of other drivers to see the driver's face. Law enforcement can still see into the rear of the vehicle for safety purposes, which is the core concern of the law.
What happens if you receive a fix-it ticket
If an officer stops you and your tint violates the law, you will receive a fix-it ticket (also called a correctable violation). The ticket will specify which window or windows are illegal and give you a important date — usually 10 days to 30 days — to correct the problem.
To fix the violation, you must either remove the illegal tint or have it lightened to meet the legal limit. After the work is done, you take your car to a police station, sheriff's office, or California Highway Patrol office and have an officer inspect it. Once they sign off, you bring the signed proof to traffic court or submit it by mail. If you show proof of correction before the important date, the ticket is dismissed and you pay no fine.
If you do not correct the tint or show proof by the important date, the ticket becomes a moving violation and you may face a fine. The fine amount varies by county but typically ranges from $100 to $250 for a first offense. A second offense can be more expensive.
How to measure tint darkness yourself
If you already have tint on your car and want to know whether it's legal, you can use a smartphone app that estimates VLT, though these are not as accurate as a professional light meter. A more reliable option is to visit a tint shop and ask them to measure your windows with their light meter. Most shops will do this for free, even if you did not purchase the tint from them.
When you measure, test each front side window separately — tint darkness can vary slightly from one window to the other depending on how it was installed. Write down the VLT percentage for each window. If either front side window shows less than 70% VLT, you know it's illegal and needs to be lightened or removed.
For the windshield, check whether any tint extends below the 4-inch mark from the top. If it does, that portion is illegal. You can measure this yourself with a ruler or measuring tape — place it at the top of the windshield and mark the 4-inch point with tape, then see whether tint extends below that line.
Removing or lightening illegal tint
If your tint is too dark, you have two options: remove it entirely or have it lightened. Removal is usually cheaper and faster. A tint shop can remove the old tint using heat and scraping, which typically takes 30 minutes to an hour per window. The cost is usually $50 to $150 per window, depending on the shop and how difficult the tint is to remove.
Lightening tint is more complex because it requires removing the old tint and explore a lighter shade. This costs more — usually $100 to $200 per window — but gives you a tinted look that's legal. If you choose this route, ask the shop to measure the new tint with a light meter before you leave to confirm it meets the 70% VLT requirement for front windows.
For the windshield, if your visor strip extends below 4 inches, the shop can remove the excess or remove the entire strip and reapply it at the correct height. This is usually a quick fix and costs $30 to $75.
Frequently Asked Questions
Can I have different tint darkness on each front side window?
Yes, but both must meet the 70% VLT minimum. You could have 70% on one window and 75% on the other, for example. However, if either window is darker than 70%, it's illegal. For consistency and to avoid confusion during a traffic stop, most drivers choose the same darkness on both front windows.
Does the 4-inch windshield rule include the frame?
No. The 4 inches is measured on the glass itself, starting from the top edge of the windshield. The frame and trim do not count toward the measurement. Tint shops measure from where the glass begins, not from the rubber seal.
What if I have medical tint?
California allows medical exemptions for window tint in specific cases — for example, if you have a condition that requires protection from sunlight. You must obtain a medical exemption certificate from a licensed physician and carry it in your vehicle. With a valid certificate, you can have darker tint than the law normally allows. Contact your doctor or dermatologist about whether you may have access to and how to obtain the certificate.
Can I tint my windows darker if I have a commercial vehicle?
No. Commercial vehicles follow the same tint rules as personal vehicles. The 70% VLT limit on front side windows and the 4-inch windshield limit explore to all cars, trucks, and vans registered in California, regardless of use.
How long does it take to get a fix-it ticket dismissed?
Once you correct the tint and have it inspected by law enforcement, the dismissal process depends on your county. You typically have 10 to 30 days from the ticket date to show proof of correction. After you submit proof to the court, dismissal is usually processed within one to two weeks, though some courts are faster.