Last reviewed: September 2026. Based on Ohio Revised Code § 4513.241 and Ohio Administrative Code Chapter 4501-41. Laws can change — verify current requirements at codes.ohio.gov. This page is general information, not legal advice.
Any applied film, combined with the glass, must allow at least 70% (±3%) light transmittance, and can't be red or yellow. A strip above the AS-1 line (or 5 inches from the top) is unregulated.
Combined light transmittance must be at least 50% (±3%), and can't be red or yellow.
No explicit percentage floor is set — but if the rear window is tinted below 50% transmittance, the vehicle must have outside mirrors on both sides.
Not permitted on any window — windshield, front, side, or rear.
Vehicles from model year 1990 onward must carry a label identifying the film manufacturer and light transmission percentage, placed in the lower-left corner of the window.
Available with a signed affidavit from a licensed Ohio physician or optometrist, kept in the vehicle.
Not on the windshield or front windows. On rear windows, darker tint is generally workable with outside mirrors on both sides.
Same rule applies — below the 50% front-window minimum, but workable on rear windows with mirrors.
Yes — Ohio's standard measures the finished window (glass plus any applied film) together, not the film alone.
Considering professional window tint? Our Circleville studio and New Lexington studio both install with Ohio's requirements in mind. Explore our window tinting services or see our real vehicle transformations.
