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Iowa Code § 321.438 · checked 2026-10-01 against statute summaries

Iowa window tint laws

In Iowa, front side windows must allow 70% of light through, back side windows no specified minimum, and the rear window no specified minimum. Must allow more than 70% of light in

WindowIowa rule
WindshieldMust allow more than 70% of light in
Front side windows70% VLT minimum
Back side windowsNo limit specified
Rear windowNo limit specified
ReflectivityNo excessive reflectiveness; statute does not set a specific percentage
Banned colorsNone listed
Medical exemptionNo
StatuteIowa Code § 321.438

What installers in Iowa will tell you

Iowa has not permitted medical exemptions for darker tint since July 2012. Back side and rear windows may be any darkness for sedans, SUVs, and vans alike; no certification sticker is required.

Frequently asked questions

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

Front side windows must let at least 70% of light through in Iowa. Film plus factory glass count together.

Can I use 5% tint in Iowa?

Iowa does not set a numeric limit for rear windows, so 5% is generally allowed behind the driver. Front side windows are still limited.

Does Iowa allow a medical exemption for darker tint?

No formal medical exemption is provided in the Iowa statute we reviewed.

Can I tint the windshield in Iowa?

Must allow more than 70% of light in

Sources

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