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Iowa Window Tint Laws (2026)

Info: 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.

InfoVerified Jul 20, 2026

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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))

Official source: legis.iowa.gov →

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

Window Tint in states bordering Iowa

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 →
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 →
MissouriInfo
Front side windows must let at least 35% of light through, with a 3% margin allowed; no tint on the windshield other than the factory strip across the top. (Mo. Rev. Stat. 307.173)
Verified Jun 18, 2026 · Source: revisor.mo.gov · Full Missouri rule →
NebraskaInfo
Front side windows must let at least 35% of light through; windshield tint is allowed only above the AS-1 line — the marking near the top of the windshield. (Neb. Rev. Stat. 60-6,257)
Verified Jun 18, 2026 · Source: nebraskalegislature.gov · Full Nebraska rule →
South DakotaInfo
Front side windows must let at least 35% of light through, with a 9% tolerance allowed; windshield tint is allowed only above the AS-1 line — the marking near the top of the windshield. (S.D. Codified Laws 32-15-2.4)
Verified Jun 18, 2026 · Source: sdlegislature.gov · Full South Dakota rule →
WisconsinInfo
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)
Verified Jun 18, 2026 · Source: docs.legis.wisconsin.gov · Full Wisconsin rule →

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