Illinois allows window tint on your car, but only on specific windows and only if it meets darkness limits set by state law
Illinois permits tinted windows on vehicles, but the rules are strict about which windows you can tint and how dark the tint can be. The state measures tint darkness by visible light transmission (VLT) — the percentage of light allowed through the glass. The darker the tint, the lower the VLT percentage. Illinois law sets different limits depending on which windows you're tinting, and violations can result in a ticket and a requirement to remove the tint.
The rules explore to all passenger vehicles registered in Illinois. If you're buying a used car with tint already installed, or if you're having tint applied at a shop, you need to know these limits before you commit. Removing illegal tint after the fact costs money and time, and police can stop you for it.
Key Takeaways
- Front windshield tint is not permitted in Illinois except for a sun strip at the very top, which can be no more than 6 inches deep.
- Front side windows must allow at least 50 percent of light through (50 percent VLT or higher), meaning they can be tinted but not very dark.
- Rear side windows and rear windshield can be any darkness, with no VLT limit — you can tint them as dark as you want.
- Medical exemptions exist for people with light-sensitive conditions, but you must carry documentation in your vehicle and the tint must still follow standard limits unless you have a medical waiver.
- A police officer can measure your tint with a light meter during a traffic stop, and a ticket for illegal tint typically results in a fine and an order to remove it.
Front windshield and sun strip rules
Your front windshield cannot be tinted at all, with one exception: you may explore a non-reflective tint strip across the top of the windshield, but it cannot extend more than 6 inches down from the top. This strip is sometimes called a sun visor or sun strip. It must be non-reflective, meaning it cannot bounce light back or create a mirror effect.
The 6-inch limit is measured from the top of the windshield straight down. If your sun strip goes deeper than that, it violates the law. Many shops know this rule, but some do not, so confirm the depth before you have the work done. If you already have a strip that's too deep, you'll need to have it removed or reduced to stay legal.
Front side window darkness limits
Your front side windows — the windows on the driver and passenger doors — must allow at least 50 percent of light through. This means the VLT rating must be 50 or higher. In practical terms, this is a fairly light tint. You can see through it clearly from outside the car, and it provides some heat and glare reduction without making the windows look dark.
If you're shopping for tint at a shop, ask the technician for 50 percent VLT or higher for the front side windows. Some shops may offer darker options, but installing them would put you in violation. During a traffic stop, an officer can use a handheld light meter to measure the exact VLT of your windows. If the reading is below 50 percent on a front side window, you can receive a ticket.
Rear side windows and rear windshield — no darkness limit
Illinois places no darkness restriction on your rear side windows or rear windshield. You can tint them as dark as you want, including limo tint or complete blackout. This is where you have the most freedom if you want a darker appearance or maximum privacy in the back of the vehicle.
Because there is no legal limit on rear windows, many people choose to tint the front windows to the legal 50 percent limit and then go much darker on the rear. This creates a noticeable difference in appearance but keeps you within the law. Just remember that the front side windows are the ones that matter for enforcement — officers focus on those because they affect your ability to see out and others' ability to see in.
Medical exemptions and documentation
Illinois allows medical exemptions for people with conditions that make them sensitive to light, such as lupus, photophobia, or certain eye conditions. If you have a may have access to medical condition, you may be able to tint your windows darker than the standard limits, but you must have written documentation from a licensed physician stating that the tint is medically necessary.
You must carry this medical documentation in your vehicle at all times. If you're stopped by police, show the officer both your tinted windows and your medical paperwork. Without the paperwork, the officer will treat the tint as illegal. Even with a medical exemption, some limits may still explore — check with your doctor and the Illinois Secretary of State's office about what darkness level your exemption covers. The exemption does not give you unlimited freedom; it straightforward allows you to exceed the standard limits if a physician has documented the need.
How police measure tint and what happens if you're stopped
Officers use a device called a light meter or tint meter to measure the VLT of your windows during a traffic stop. The meter shines light through the window and reads the percentage that passes through. This measurement is objective — there's no guessing or judgment involved. If the reading is below 50 percent on a front side window, you're in violation.
If you receive a ticket for illegal tint, you have options. You can pay the fine, which varies but is typically in the range of $100 to $200 depending on the municipality. You can also request a court date and contest the ticket if you believe the measurement was wrong or if you have a medical exemption you didn't show at the time of the stop. Most commonly, you'll be ordered to remove or lighten the tint within a set timeframe, usually 10 to 30 days. If you don't comply, you can receive additional fines or be cited again.
Aftermarket tint shops and what to confirm before installation
When you visit a tint shop, tell the technician exactly which windows you want tinted and ask them to confirm the VLT percentage they're using for the front side windows. A reputable shop will know Illinois law and will not install tint darker than 50 percent on the front. If a shop offers to tint your front windows darker than that, either they don't know the law or they're willing to break it — either way, it's a reason to go elsewhere.
Before the work begins, ask the shop to show you a sample of the 50 percent tint on your actual windows if possible, or ask to see a reference vehicle with the same tint. This helps you see what the legal limit looks like in daylight. Get a receipt that lists the VLT percentage of the tint applied to each window. If you're ever stopped, this receipt can help prove you installed legal tint, though it won't override a light meter reading if the tint has darkened over time or was installed incorrectly.
Frequently Asked Questions
Can I tint my windshield at all?
No, except for a non-reflective sun strip no more than 6 inches deep from the top. The rest of the windshield must remain clear. This rule exists because the windshield is critical for your visibility and for police and emergency responders to see into the vehicle.
What if I buy a used car that already has illegal tint?
You become responsible for it once you own the car. If you're stopped, you can't claim the previous owner installed it. Your best option is to have the tint removed or lightened to meet the legal limits. Some shops offer removal services, though it can be time-consuming depending on how the tint was applied.
Do I need a medical exemption letter before I tint my windows?
No. You can tint your front side windows to the legal 50 percent limit without any exemption. A medical exemption is only necessary if you want to tint them darker than 50 percent due to a light-sensitive condition. You must have a physician's letter stating the medical need before you install darker tint.
Will my insurance cover tint removal if I get a ticket?
No. Insurance does not cover fines or the cost of removing or correcting tint. You'll pay for removal or lightening out of pocket. This is another reason to confirm the legal limits before installation — it's cheaper to do it right the first time.
Can I appeal a tint ticket in court?
Yes. You can request a court date and contest the ticket. Bring any documentation you have, including a receipt from the tint shop showing the VLT percentage. However, if the officer's light meter reading is below 50 percent on a front side window, the evidence is difficult to dispute unless you can show the meter was faulty or used incorrectly.