Utah tint limits at a glance
| Front side windows | 35% |
|---|---|
| Back side windows | Any darkness (mirrors on both sides) |
| Rear window | Any darkness (mirrors on both sides) |
| Windshield | Top 4 inches or above the AS-1 line |
| Reflectivity | No metallic or mirrored film |
| SUVs, vans and trucks | Same as cars |
Percentages are the minimum visible light transmission with the film installed, including the factory glass. A lower number means darker tint.
Is 5%, 20%, 35% or 50% tint legal in Utah?
This table shows whether a film with each rating is legal on a sedan in Utah. Factory glass blocks some light, so a film reads darker once it's installed.
| Film rating | Front side windows | Back side windows | Rear window |
|---|---|---|---|
| 5% | Not legal | Legal with mirrors on both sides | Legal with mirrors on both sides |
| 15% | Not legal | Legal with mirrors on both sides | Legal with mirrors on both sides |
| 20% | Not legal | Legal with mirrors on both sides | Legal with mirrors on both sides |
| 35% | Likely too dark once installed | Legal with mirrors on both sides | Legal with mirrors on both sides |
| 50% | Legal | Legal with mirrors on both sides | Legal with mirrors on both sides |
| 70% | Legal | Legal with mirrors on both sides | Legal with mirrors on both sides |
'Likely too dark once installed' means the film rating meets the limit, but on typical factory glass the combined reading usually falls under it. Meter the window to be sure.
Choosing a film that stays legal
Assume factory side glass passes about 80% of light.
- Front side windows: 45% film or lighter
- Back side windows: Any film
- Rear window: Any film
Factory privacy glass on many SUVs already reads well under 30%, so any film added over it will read darker still. Always meter after the install.
Fines and penalties
Infraction. Police can't request a registration or license suspension for front tint violations.
Medical exemptions
Utah's tint statute does not include a medical exemption.
Meter tolerance
Utah allows a tolerance of 5% when officers meter a window. A tolerance covers meter error. It isn't extra room to go darker.
Law history
- : Front side limit lowered from 43% to 35%; tint became a secondary infraction.
The law
Utah's tint rules are set by Utah Code § 41-6a-1635. Read the source
This page is a reference for drivers and installers, not legal advice. Enforcement can vary by city and county.
Frequently asked questions
How dark can you legally tint your windows in Utah?
On a sedan, front side windows: 35%. Back side windows: Any darkness (mirrors on both sides). Rear window: Any darkness (mirrors on both sides).
Is 20% tint legal in Utah?
Front: Not legal. Back: Legal with mirrors on both sides. Rear: Legal with mirrors on both sides. See the 20% film row.
Is 35% tint legal in Utah?
Front: Likely too dark once installed. Back: Legal with mirrors on both sides. Rear: Legal with mirrors on both sides. See the 35% film row.
Is tint allowed on the windshield in Utah?
Top 4 inches or above the AS-1 line
Are the rules different for SUVs and trucks in Utah?
Same as cars
What is the fine for illegal tint in Utah?
Infraction. Police can't request a registration or license suspension for front tint violations.
Can I get a medical exemption for window tint in Utah?
Utah's tint statute does not include a medical exemption.
Did Utah change its tint law recently?
Front side limit changed from 43% to 35% on May 7, 2025.
Related
Back to the full chart: Window tint laws by state
Neighboring states:
Data set last updated: