California Window Tint Laws: A Guide to Legal Percentages
Driving around with tinted windows offers several advantages — reduced glare, improved comfort during hot weather, added privacy, and UV protection. However, California has strict laws regarding how dark you can tint your windows. If you're thinking about getting your car windows tinted or are unsure whether your current tint is legal, this updated 2024 guide will help you stay compliant and avoid costly violations.
At Five Star Auto Tint, we specialize in professional, legal window tinting across California, including cities like Modesto, Sacramento, and Livermore. We’re here to help you stay both stylish and street legal.
What Is VLT (Visible Light Transmission)?
Before diving into California’s specific laws, it's important to understand VLT — Visible Light Transmission. VLT refers to the percentage of visible light that passes through your car windows. A lower VLT percentage means darker tint, which blocks more light.
California Window Tint Laws: 2024 Guidelines
Outlined under California Vehicle Code Section 26708, the law specifies how dark and where you can apply window tint on your vehicle:
- Windshield: You can apply non-reflective tint only on the top 4 inches. Anything below this line is illegal.
- Front Side Windows: Must allow more than 70% of light to pass through. This means no darker than 30% tint.
- Back Side Windows: No restrictions on how dark the tint can be.
- Rear Window: No VLT restriction either, as long as your vehicle is equipped with dual side mirrors.
For the most up-to-date vehicle codes, you can visit the official California DMV website.
Important Points to Keep in Mind
- Reflective Tint Not Allowed: California law bans any metallic or mirror-like reflective window tint.
- Medical Exemptions: A darker front window tint may be allowed with a medical exemption signed by a licensed physician.
- Police Enforcement: Officers may use photometers to measure your tint’s VLT. Non-compliance can lead to citations or required removal.
Factory Tint vs. Aftermarket Tint
Many vehicles come with factory-installed tint, especially on rear windows. If you apply additional tint over it, the combined VLT may drop below the legal limit. For example, combining factory 80% VLT with a 20% aftermarket film could violate the 70% rule for front windows.
At Five Star Auto Tint, we test your vehicle’s current VLT before applying any new film, ensuring that your tint stays fully compliant with California regulations.
Why Staying Compliant Matters
- Avoid Fines: Non-compliant tint can cost you in both fines and court fees.
- Stay Safe: Tint that’s too dark can impair night driving, leading to dangerous situations.
- Avoid Legal Trouble: Law enforcement takes tint violations seriously — staying legal avoids unwanted stops and citations.
Trust the Experts at Five Star Auto Tint
Choosing a professional window tint installer is crucial to avoid mistakes and potential legal issues. At Five Star Auto Tint, we provide:
- California-compliant window tint films
- Accurate VLT testing
- High-quality installations
- Service across Modesto, Sacramento, and Livermore
We stay up to date with California laws to help you enjoy the comfort and style of tinted windows — legally.
Stay Informed
Laws and regulations can change. Always double-check any new updates on the California DMV site or speak with professionals like us at fivestarautotint.com for personalized guidance.
Final Thoughts
California’s window tint laws for 2024 are clear — and following them is easier than ever with expert help. Whether you’re looking for improved privacy, UV protection, or just a cooler car interior, make sure your tint meets state guidelines.
Ready to upgrade your ride? Book a legal window tinting service with Five Star Auto Tint and enjoy peace of mind on the road.










