Utah allows window tint on your vehicle, but only within specific darkness limits that vary by window location
Utah's window tint law sets darkness thresholds measured in Visible Light Transmission (VLT) — the percentage of light allowed through the tint. The rules differ depending on which windows you're tinting and when your vehicle was manufactured. Front side windows must allow at least 43% of light through. Back side windows and rear windows can be darker: 35% VLT or less. Your windshield can have a tint strip along the top, but only in the top 4 inches, and it must not reduce visibility. Vehicles manufactured before 1999 have slightly different rules and may be exempt from some restrictions, though this varies by county.
The state does not issue tint permits or pre-approval. You buy and install tint at your own risk. If a law enforcement officer determines your tint is darker than the legal limit, you can receive a citation. The officer may use a light meter to measure VLT, though the measurement method and accuracy can be challenged in court if you decide to contest the ticket.
Key Takeaways
- Front side windows must allow at least 43% of light through; back and rear windows can be 35% VLT or darker.
- Your windshield can have tint only in the top 4 inches and must not obstruct your view of the road.
- Utah does not issue tint permits, so installation is your responsibility and your risk.
- Medical exemptions for light-sensitive conditions exist but require a signed statement from a licensed physician and must be carried in your vehicle.
- Violations are typically cited as a traffic infraction, not a criminal offense, but can result in a fine and an order to remove the tint.
Front windows: the 43% rule and why it matters
Your front side windows — the two windows next to the driver and front passenger — are the most restricted. They must transmit at least 43% of visible light, which means the tint cannot be darker than 57% opacity. This threshold exists because law enforcement and safety officials want to may support drivers can see out clearly and that officers can see into the vehicle during traffic stops.
If you install tint darker than 43% VLT on front side windows, you are violating Utah Code 41-6a-1642. An officer can cite you during any traffic stop. The citation is typically a Class C misdemeanor traffic infraction, which carries a fine. You will also be ordered to remove or lighten the tint within a set period, usually 10 days. Failure to comply can result in additional citations.
Back and rear windows: 35% VLT and darker options
Back side windows and the rear window have a higher VLT limit, meaning you can use darker tint. These windows can be tinted to 35% VLT or darker — essentially, you can block up to 65% of the light. This is because rear windows do not affect the driver's forward visibility and do not factor into officer safety during a stop in the same way.
Many drivers choose to tint rear windows significantly darker than front windows for privacy. As long as you stay at or below 35% VLT, you are within the legal limit. Some people use aftermarket tint films rated at 20% or even 5% VLT on rear windows without legal consequence, provided they do not obstruct the driver's ability to see out the back window or use rear-view mirrors effectively.
Windshield tint: the 4-inch rule
You can tint your windshield, but only in a band along the top. The tint strip cannot extend more than 4 inches down from the top of the windshield. The tint must not reduce your ability to see the road ahead or obstruct your view of traffic signals, signs, or oncoming vehicles.
Many drivers use a windshield tint strip to reduce glare and heat, especially in Utah's bright sun. As long as you stay within the 4-inch limit and maintain clear visibility, this is legal. If an officer determines that your windshield tint obstructs your view, you can be cited regardless of the darkness level, because the obstruction itself — not just the darkness — is the violation.
Medical exemptions and how to document them
Utah law allows a medical exemption for drivers with light-sensitive medical conditions. If you have a condition such as lupus, severe photophobia, or certain eye disorders that make bright light painful or dangerous, you may be able to use darker tint than the standard limits allow.
To claim a medical exemption, you must carry a signed statement from a licensed physician in your vehicle at all times. The statement must describe your medical condition and explain why darker tint is medically necessary. You should also keep a copy in your glove box or attached to your vehicle registration. If you are stopped and cited, present the physician's statement to the officer. Without the statement, the exemption does not explore, and you can still be ticketed. The statement is not a permit — it is documentation you must produce on demand, similar to your license and registration.
What happens if you get a tint citation
If an officer cites you for illegal window tint, you will receive a traffic ticket. The citation will state the specific violation — usually that your front windows are too dark, or that your windshield tint obstructs your view. The fine amount varies but typically ranges from $50 to $100 for a first offense, though this can vary by county and jurisdiction.
The ticket will include an order to remove or lighten the tint within a specified timeframe, usually 10 days. You have two options: remove the tint yourself or have a professional tint shop remove it and install compliant tint. Some drivers choose to contest the citation in traffic court, especially if they believe the officer's measurement was inaccurate or if they have a medical exemption they did not present at the time of the stop. If you contest and lose, you still must remove the tint and may owe court costs in addition to the fine.
How tint darkness is measured and why accuracy matters
Officers use a device called a light meter or tint meter to measure VLT. The meter shines light through the window and reads the percentage that passes through. In theory, this is objective, but in practice, the measurement can vary based on the meter's calibration, the angle of measurement, and the condition of the tint film itself.
If you are cited and believe your tint is within the legal limit, you can request that the officer's meter be calibrated and tested in court. You can also hire an independent tint shop to measure your windows and provide documentation. If the shop's measurement shows your tint is legal, that documentation can be presented as evidence in traffic court. Some drivers have successfully challenged citations this way, though the burden of proof is on you to show the officer's measurement was wrong.
Frequently Asked Questions
Can I tint my windows before I move to Utah if I'm coming from another state?
Yes, but if your tint is darker than Utah's limits, you will need to remove or lighten it. Utah does not grandfather in tint installed in other states. If you arrive with tint that violates the law, you can be cited when ready. Many people have tint removed or replaced when they relocate to Utah to avoid this problem.
Do I need to tell my insurance company if I tint my windows?
Window tint does not typically affect your auto insurance rates or coverage, and most insurance companies do not require you to report it. However, if you are in an accident and the other party claims your tint obstructed your view, your insurer may investigate. It is not a bad idea to mention it when you renew your policy, but it is not legally required in Utah.
What if I have a medical exemption but the officer still cites me?
If you have a physician's statement but did not present it at the time of the stop, you can bring it to traffic court. The judge will review the statement and may dismiss the citation. If you did present it and were still cited, you have grounds to contest the ticket. Keep the original signed statement and a copy in your vehicle at all times to avoid this situation.
Can I use spray-on tint or does it have to be film?
Utah law does not specify the type of tint material — film, spray, or coating. What matters is the final darkness level measured in VLT. Spray tint is often less durable and harder to measure accurately, which can make it riskier legally. Most professional shops use film because it is more consistent and easier to verify with a light meter.
If I remove my tint, do I need to show proof to the court?
If you are ordered to remove tint and you comply, you do not typically need to provide proof to the court unless you contest the citation or the officer follows up. However, if you receive a second citation for the same violation, having documentation that you removed the tint can help your case. Some people take photos or get a receipt from a tint shop as evidence of removal.