Iowa window tint law
In Iowa, a passenger car's front side windows must let in at least 70% of light; rear side windows: any darkness; rear window: any darkness. Source: Iowa Admin. Code 761-450.7 (implements Iowa Code §321.438), checked November 2026.
| Front side windows | 70% At least 70% light transmittance. |
|---|---|
| Rear side windows | Any darkness No % limit: the darkness standard covers only the windshield and front side windows/wings. |
| Rear window | Any darkness No % limit: the darkness standard covers only the windshield and front side windows/wings. |
| Windshield | Must have at least 70% light transmittance. |
| Medical exemption | No new exemptions since July 4, 2012; earlier Form 432020 holders may keep 35% fronts. |
The Iowa front-side limit on a car
Levels we picture that meet the front-side limit: 70% (light)
Source
Iowa Admin. Code 761-450.7 (implements Iowa Code §321.438)
“"Excessively dark or reflective" means that the windshield, front side window or front sidewing does not meet a minimum standard of transparency of 70 percent light transmittance.”
Checked November 2026. A summary of the passenger-car rules, not legal advice: laws change, so check the source or ask a local tint shop before you buy.
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