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625 ILCS 5/12-503 · checked 2026-10-01 against statute summaries

Illinois window tint laws

In Illinois, front side windows must allow 35% of light through, back side windows 35%, and the rear window 35%. Non-reflective tint allowed on the top 6 inches

WindowIllinois rule
WindshieldNon-reflective tint allowed on the top 6 inches
Front side windows35% VLT minimum
Back side windows35% VLT minimum
Rear window35% VLT minimum
ReflectivityFront and back side windows must be non-reflective (no specific percentage set by statute)
Banned colorsNone listed
Medical exemptionYes
Statute625 ILCS 5/12-503

What installers in Illinois will tell you

SUVs and vans with factory privacy glass get 50% VLT on front side windows and any darkness on back side and rear windows, versus 35% across the board for sedans. Medical exemptions (for conditions like lupus or albinism) require a physician's certified letter filed with the Secretary of State and renewed every 4 years.

Frequently asked questions

What is the darkest legal tint on front windows in Illinois?

Front side windows must let at least 35% of light through in Illinois. Film plus factory glass count together.

Can I use 5% tint in Illinois?

No on front side windows. Rear windows are limited to 35% VLT minimum and back side windows to 35% VLT minimum.

Does Illinois allow a medical exemption for darker tint?

Yes. Illinois allows darker tint with a qualifying medical condition; you typically need a physician's statement kept in the vehicle.

Can I tint the windshield in Illinois?

Non-reflective tint allowed on the top 6 inches

Sources

Reference only, not legal advice. Statutes change; confirm with the Illinois statute above before you install.