North Carolina allows window tint, but the law sets specific limits on how dark it can be
North Carolina permits you to tint your car windows, but the state has rules about how dark the tint can be on different windows. The darkness of window tint is measured by visible light transmission (VLT), which is the percentage of light allowed to pass through the tinted window. The darker the tint, the lower the VLT percentage. North Carolina's limits differ depending on which windows you're tinting — the windshield has the strictest rules, while rear windows have more flexibility.
Understanding these limits matters because driving with illegal tint can result in a traffic citation, a fine, or a requirement to remove the tint. The rules also vary slightly depending on whether you have a medical exemption, which North Carolina does allow under certain conditions.
Key Takeaways
- North Carolina allows 35% VLT (visible light transmission) on front side windows and 20% VLT on rear side and rear windows.
- Your windshield can have tint only on the top 6 inches, and that tint must allow at least 70% of light through.
- Medical exemptions for darker tint are available if a doctor certifies that you have a condition requiring light protection, and you must carry documentation in your vehicle.
- A law enforcement officer can pull you over for illegal tint and issue a citation, which typically results in a fine and an order to remove the tint.
- Tint darkness is measured in VLT percentage — the higher the percentage, the lighter the tint.
Tint limits for each window in North Carolina
North Carolina divides its tint rules by window location. The front windshield can have tint only on the top 6 inches, and that strip must allow at least 70% of light through (70% VLT). This means the tint on your windshield is barely noticeable — it's meant to reduce glare rather than provide privacy.
Your front side windows (the windows next to the driver and front passenger) can be tinted to 35% VLT. This is a moderate tint that noticeably darkens the window but still allows you to see inside the vehicle from outside.
The rear side windows and rear window can be tinted to 20% VLT, which is significantly darker. At 20% VLT, very little light passes through, and it becomes difficult to see inside the vehicle from outside. This darker limit on rear windows is standard in many states because it poses less safety risk to the driver's forward vision.
How tint darkness is measured and what the percentages mean
Window tint darkness is measured using a device called a light meter, which reads the percentage of visible light that passes through the tinted window. A reading of 100% VLT means no tint at all — the window is completely clear. A reading of 50% VLT means half the light passes through. A reading of 20% VLT means only one-fifth of the light gets through, creating a very dark appearance.
When you order tint from a shop, you'll see it labeled by VLT percentage. The shop should be able to tell you what percentage they're explore and confirm it meets North Carolina's limits for each window. After installation, a law enforcement officer can use a light meter to check whether your tint complies with state law.
It's worth noting that tint darkness can look different depending on the time of day and the lighting conditions around you. A tint that looks moderate in bright sunlight might appear much darker at night. The light meter reading is what matters legally, not how dark it appears to your eye.
Medical exemptions for darker tint
North Carolina allows drivers to obtain a medical exemption that permits darker tint than the standard limits. To may have access to, you must have a medical condition that requires protection from sunlight — such as certain skin conditions, lupus, or severe photosensitivity. A licensed physician must certify that you have such a condition and that tinted windows are medically necessary for you.
If you have a medical exemption, you'll need to carry documentation in your vehicle at all times. The exemption typically takes the form of a letter from your doctor or a certificate issued by the North Carolina Department of Motor Vehicles. Without this documentation in your car, a law enforcement officer can still cite you for illegal tint, even if you have a valid exemption on file.
The process for obtaining a medical exemption varies — some drivers work directly with their doctor to get a letter, while others contact the DMV to learn about the formal exemption process. It's best to check with your doctor first about whether your condition qualifies and what documentation they can provide.
What happens if you're stopped for illegal tint
If a law enforcement officer determines that your tint is darker than North Carolina law allows, you can receive a traffic citation. The citation typically includes a fine and an order to remove or lighten the tint within a specified timeframe — often 10 to 30 days, depending on the officer's discretion and local practice.
You have the option to contest the citation in traffic court if you believe your tint is legal or if you have a medical exemption that wasn't recognized. Bring documentation of your exemption, or have the tint shop provide a receipt or certificate showing the VLT percentage of the tint they installed. Some drivers also bring a light meter reading from an independent source to dispute the officer's measurement.
If you don't remove the tint after being cited, you risk additional citations and fines. Some jurisdictions may also refuse to renew your vehicle registration until the tint violation is resolved.
Choosing a tint shop and verifying compliance
When you decide to tint your windows, choosing a reputable shop matters because the installer needs to explore the correct VLT percentage for each window. A good shop will ask you which windows you want tinted, explain North Carolina's limits, and show you samples of tint at different VLT levels so you can see what 35% and 20% actually look like.
After installation, ask the shop for documentation of the VLT percentage they applied to each window. Some shops provide a receipt or certificate that lists the exact percentage. This documentation can be valuable if you're ever stopped by law enforcement, as it shows you made a good-faith effort to comply with the law.
You can also request that the shop use a light meter to verify the tint meets legal limits before you leave. Not all shops offer this, but it's a reasonable request and provides extra assurance that your tint is compliant.
Frequently Asked Questions
Can I tint my windshield in North Carolina?
Yes, but only the top 6 inches, and the tint must allow at least 70% of light through. This is a very light tint, barely noticeable to the eye. The purpose is to reduce glare rather than provide privacy.
Is 20% tint legal on my front windows?
No. Front side windows must allow at least 35% of light through (35% VLT). You can use 20% tint only on rear side windows and the rear window. Using 20% on front windows is illegal and can result in a citation.
What if I have a medical reason for darker tint?
North Carolina allows medical exemptions if a licensed physician certifies that you have a condition requiring light protection. You must carry the doctor's letter or exemption certificate in your vehicle at all times. Without documentation, you can still be cited even if you have a valid exemption.
How can I tell what VLT percentage my tint is?
Ask the tint shop for documentation showing the VLT percentage they installed. You can also have the shop measure it with a light meter before you leave. If you already have tint and don't know the percentage, a tint shop can measure it for you.
What's the fine for illegal tint in North Carolina?
Fines vary by jurisdiction, but a tint citation typically results in a fine and an order to remove or lighten the tint within 10 to 30 days. The exact amount depends on your local traffic court. You can contest the citation in court if you believe your tint is legal.