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State tint law · · 2-minute read

Window Tint Laws in Indiana (2026): Legal VLT Limits and Exemptions

What Indiana allows on each window, the windshield rule, medical exemptions and how roadside checks work, with the statute cited.

By Armor Atlas · Summarized from the statute, linked on this page

Indiana tint rules at a glance

Front side windows
30%
Minimum VLT, film and glass together
Back side windows
Any
Any darkness allowed
Rear window
30%
Minimum VLT, film and glass together
Windshield
Film only on the uppermost portion and never below the AS-1 line.
Reflectivity
Total solar reflectance of visible light may not exceed 25%, measured on the non-film side.
Medical exemption
Yes, with documentation
Sticker or certificate
Not required
Two outside mirrors
Not required
Penalty
Driving with noncompliant tint is a Class C infraction; installing it is a Class A infraction (IC 9-19-19-7(b), 9-19-19-8).

VLT is the share of light the glass lets through, film and glass together. Source: Ind. Code § 9-19-19-4, checked Nov 5, 2026. Laws change; confirm with the statute before tinting.

Indiana regulates window tint through Ind. Code § 9-19-19-4. Below: the minimum visible light transmission (VLT) for each window, the windshield rule, what counts as too reflective, who can get a medical exemption, and how an officer checks a car at the roadside.

  • Front side windows: at least 30% VLT.
  • Back side windows: any darkness.
  • Rear window: at least 30% VLT.

VLT is measured through film and glass together. Factory glass already blocks some light, usually landing between 70% and 80% VLT before any film, so a roll sold as "35%" on a window that started at 75% ends up darker than 35% once installed. Officers meter the finished window, not the box the film came in.

Windshield

Film only on the uppermost portion and never below the AS-1 line.

Federal standard FMVSS 205 sets the baseline for the glass itself: the windshield and front side windows of a new car must transmit at least 70% of visible light. State law decides what film may be added afterwards, which is why the windshield rule is usually a strip above the AS-1 line rather than a percentage.

Reflective and colored film

Total solar reflectance of visible light may not exceed 25%, measured on the non-film side. No film colors are singled out.

Medical exemptions

Indiana allows darker tint with a medical exemption. An Indiana-licensed physician or optometrist certifies the need; the certificate must be carried in the vehicle and renewed every year.

Stickers, mirrors and enforcement

No sticker or certificate is required for legal tint. Tinting the rear window does not trigger a second-mirror requirement. Driving with noncompliant tint is a Class C infraction; installing it is a Class A infraction (IC 9-19-19-7(b), 9-19-19-8).

In practice

Since the 2015 amendment the statute uses fixed thresholds of 30% transmittance and 25% reflectance in place of the old test of whether occupants can be easily identified, which the state's online FAQ still quotes. The windows named are the windshield, side wings, side windows that are part of a front door and the rear back window; rear-door and quarter windows are not listed. No measurement tolerance is written into the law. Police may stop a vehicle to check tint but may not search or detain anyone solely for a tint violation.

Sources

Checked Nov 5, 2026. Laws change; confirm with the statute before tinting.

Common questions about tint in Indiana

Is 30% tint legal on front windows in Indiana?

Yes. 30% is the darkest Indiana allows on front side windows: the glass and film together must let at least 30% of visible light through. Anything darker fails a meter check.

Can I tint my windshield in Indiana?

Film only on the uppermost portion and never below the AS-1 line. Film below that line is not permitted for ordinary drivers.

Does Indiana allow darker tint for medical reasons?

Yes, with documentation. An Indiana-licensed physician or optometrist certifies the need; the certificate must be carried in the vehicle and renewed every year.

What happens if my tint is too dark in Indiana?

Driving with noncompliant tint is a Class C infraction; installing it is a Class A infraction (IC 9-19-19-7(b), 9-19-19-8).

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