Vehicle Law · Window Tint
Window Tint Laws in Illinois
The exact legal darkness allowed on every window of your vehicle in Illinois, plus reflection limits, the medical exemption, and what a ticket costs.
How dark you can legally go
Visible-light transmission (VLT) allowed for each window.
Common tint shades, and whether they're legal here
What the shop sells, mapped to the Illinois limit.
| Film shade | Front option 1 (rear ≥30%) | Front option 2 (rear ≥35%) | Behind the driver |
|---|---|---|---|
| 70% (light) | Legal | Legal | Legal |
| 50% | Legal | Legal | Legal |
| 35% (factory look) | Too dark | Legal | Legal |
| 20% | Too dark | Too dark | Too dark |
| 5% (limo) | Too dark | Too dark | Too dark |
The two front columns are the two statutory options. A window darker than 35% behind the driver leaves no compliant front-window option; an obscured rear window itself is allowed with conforming dual side mirrors (12-503(e)). Law-enforcement meters observe a 5% variance.
Film is sold by its own VLT, but police measure the installed darkness: the film combined with your factory glass. Ask the shop for the net, as-installed VLT before you buy.
The full rules, with the statute
Every limit and where it comes from in the code.
| Rule / window | Legal limit in Illinois | Statute |
|---|---|---|
| Windshield | Nonreflective tinted film only along the top, extending no more than 6 inches down | 625 ILCS 5/12-503(a) |
| Front side | Two options: (1) front sides ≥50% if no window behind the driver is below 30%; or (2) front sides ≥35% if no window behind the driver is below 35%. 5% metering variance. | 625 ILCS 5/12-503(a-5)(1)–(2… |
| Back side | No flat floor, the rear-window tint level selects the front option (≥30% for Option 1, ≥35% for Option 2) | 625 ILCS 5/12-503(a-5) |
| Rear window | No flat floor; an obscured rear window is compliant if the vehicle has conforming side mirrors on both sides | 625 ILCS 5/12-503(e) |
| SUV / van rear | No SUV/van class rule. | 625 ILCS 5/12-503(a-5)(4) |
| Reflection | Reflective film banned (film must be nonreflective); no numeric percentage cap | 625 ILCS 5/12-503(a) |
| Banned colors | None specified in statute | 625 ILCS 5/12-503 |
| Medical exemption | AllowedAvailable (details in the medical exemption section below). | 625 ILCS 5/12-503(g); 625 IL… |
| Meter tolerance | 5% variance for law-enforcement metering | 625 ILCS 5/12-503(a-5)(1) |
Penalties & how it's enforced
What happens if your tint is too dark.
P.A. 103-32 (effective 2024-01-01): No 2025–2026 change; current through P.A. 103-32.
The medical exemption: how to qualify
For drivers with a documented light-sensitivity condition.
What Illinois drivers get wrong
Illinois does not have one front-window number; it has a trade-off. Go darker in back (down to 30%) and your front doors must stay at 50% or lighter; keep everything behind the driver at 35% or lighter and your front doors may go down to 35%. Police meters get a 5% grace, and repeat violations escalate from a petty offense to a Class C misdemeanor.
Common questions
Is 35% tint legal on front windows in Illinois?
Only under Option 2: every window behind the driver must then also stay at 35% or lighter (625 ILCS 5/12-503(a-5)(2)). If your rear windows sit between 30% and 35%, the front doors must instead carry at least 50%; below 30% in back, no front option remains.
Can my SUV have dark tint in the back in Illinois?
Illinois has no SUV exception. Aftermarket rear tint feeds the two-option rule; the special case is factory-installed tinted glass behind the driver, which lets the front doors carry ≥50% film ((a-5)(4)).
What is the fine for illegal tint in Illinois?
A first offense is a petty offense with a fine of $50–$500; a second or subsequent offense is a Class C misdemeanor fined $100–$500, and the court orders the windows brought into compliance (12-503(j)).
How does the Illinois medical tint exemption work?
An Illinois-licensed physician certifies a qualifying condition (e.g., lupus, albinism, DSAP, TBI light-sensitivity); the statement is carried in the car, filed with the Secretary of State (form VSD 704), renewed every 4 years, and the car displays a special Window Tint license plate.
Not legal advicePlainStatute provides plain-language summaries of public law for general information only. This is not legal advice. Statutes change; always confirm current requirements with the official source linked above before acting.