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Wisconsin Window Tint Laws (2026)

Info: Front side windows must let at least 50% of light through, and the tint must be non-reflective; windshield tint is allowed only above the AS-1 (or "A") mark on the windshield.

InfoVerified Jun 18, 2026

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Front side windows must let at least 50% of light through, and the tint must be non-reflective; windshield tint is allowed only above the AS-1 (or "A") mark on the windshield. (Wis. Admin. Code Trans 305.34)

Official source: docs.legis.wisconsin.gov →

General legal information, not legal advice — verify important decisions with a licensed attorney.

Window Tint in states bordering Wisconsin

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

IllinoisInfo
Front side windows must let at least 35% of light through; on the windshield, tint is limited to a non-reflective strip across the top 6 inches. (625 ILCS 5/12-503)
Verified Jun 18, 2026 · Source: ilga.gov · Full Illinois rule →
IowaInfo
The windshield must let at least 70% of light through; the front side windows and the sidewings (the small vent windows) next to the driver must let at least 50% through — a measurable legal standard that replaced the former 70% administrative rule, effective July 1, 2026. Law-enforcement vehicles are exempt while on duty. (HF 766; Iowa Code 321.438(2))
Verified Jul 20, 2026 · Source: legis.iowa.gov · Full Iowa rule →
MichiganInfo
On the front side windows, aftermarket tint is allowed only across the top 4 inches of the glass — nothing added below that. (Mich. Comp. Laws 257.709)
Verified Jun 18, 2026 · Source: legislature.mi.gov · Full Michigan rule →
MinnesotaInfo
Front side windows must let at least 50% of light through, with a 3% margin allowed; no added tint is allowed on the windshield. (Minn. Stat. 169.71)
Verified Jun 18, 2026 · Source: revisor.mn.gov · Full Minnesota rule →

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