Tools · Window Tint

Iowa Window Tint Checker (2026)

The legal tint limit for every window position in Iowa (70% on the front sides), checked against your own film's VLT, with the medical exemption and what a ticket costs.

Reviewed by PlainStatute EditorialLast reviewed July 2026Verified against §321.438; Iowa Admin. Code r…

Iowa window tint checker

Window tint · Iowa

State

Your tint's VLT (optional)

VLT (visible light transmission) is the share of light the film lets through; a lower number is darker. It is printed on the film packaging or your installation receipt. Leave it blank to just read the limits.

Iowa legal tint limit, window by window

Front side windows

70% VLT min

At least 70% light transmittance. The number is not in the statute; Iowa Code §321.438 bans front glass "excessively dark or reflective" and directs the department to set the standard, which rule 761-450.7 fixes at 70%..

Back side windows

Any darkness

Any darkness (no minimum). Iowa regulates only the front windshield, front side windows, and front sidewings..

Rear window

Any darkness

Any darkness (no minimum). The 70% standard does not reach the rear window..

Windshield

70%; no strip rule

The front windshield must meet the same 70% transparency standard as the front side glass. The rule sets a straight transparency floor and does not spell out an AS-1 line or a top-strip inch measurement..

Medical exemption

Iowa closed its medical tint exemption on July 4, 2012; rule 761-450.7(3) states that no new exemption may be granted. A narrow grandfather clause lets a vehicle keep front glass between 35% and 70% only if it was documented on Form 432020, signed by the person’s physician before July 4, 2012, and stays in use for that same person. The exemption cannot be renewed and expires when the vehicle is no longer used for that person.

Penalty

A violation of §321.438 carries a scheduled fine under Iowa Code §805.8A(3).

Tint-meter tolerance

Not specified; the rule sets a flat 70% floor with no stated meter tolerance

Enter your film's VLT above to check it against each Iowa window limit, or read the limits as they stand.

Iowa regulates only the front glass. The 70% standard in rule 761-450.7 reaches the windshield, the front side windows, and the front sidewings; the back side windows and rear window carry no VLT limit.

Film is sold by its own VLT, but police measure the installed darkness: the film combined with your factory glass, which reads darker than the film alone. These are the Iowa figures stated as information, not a determination about any stop or ticket.

Informational only, not legal advice. Reflectivity limits, color bans, and vehicle-class exceptions can change the answer for a specific car. See the full rules, the exemption steps, and the citations on the Iowa window tint reference, cited to Iowa Code §321.438; Iowa Admin. Code r. 761-450.7.

How the Iowa tint rules work

Iowa is a front-glass state and nothing more. The Iowa Code section drivers usually cite, §321.438, never states a percentage; it just bans front glass that is "excessively dark or reflective" and hands the number to the transportation department. The rule, 761-450.7, sets that number at 70% for the windshield and front side windows. Behind the driver there is no limit at all, and the old medical exemption has been closed to new applicants since 2012.

This checker applies the Iowa figures to the VLT you enter. It is informational only and not legal advice: reflectivity limits, color bans, and vehicle-class exceptions can change the answer for a specific car. For the full rules, the shades table, and the citations, see the Iowa window tint reference, cited to Iowa Code §321.438; Iowa Admin. Code r. 761-450.7.

Window tint checkers for other states

Same tool, each with its own per-window limits.

Iowa Window Tint Checker (2026)

Iowa window tint checker

How the Iowa tint rules work

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