Arizona allows darker window tint than most states, but the rules depend on which windows you're tinting
Arizona permits aftermarket window tint on your vehicle, but the darkness level is regulated by law. The front side windows can be tinted to 33% of light transmittance (meaning 33% of light passes through), the rear side windows and back window can be much darker, and your windshield has its own rules. Police can stop you for illegal tint, and you'll face a fine if you're out of compliance. The rules are the same statewide — Arizona does not allow cities or counties to set their own tint standards.
Understanding which windows have limits and which don't is the key to staying legal. Many drivers assume all windows follow the same rule, but Arizona actually gives you freedom on the rear and back windows while keeping the front windows regulated for safety reasons.
Key Takeaways
- Front side windows must allow at least 33% of light through; rear and back windows can be darker with no legal limit.
- Your windshield can have tint only in a strip at the top, and that strip cannot extend below the manufacturer's AS-1 line.
- Medical exemptions exist for people with light-sensitive conditions, but you need a signed statement from a licensed physician and must carry it in your vehicle.
- A tint violation is a civil traffic offense that carries a fine; you can remove the tint and have the ticket dismissed in some cases.
Front side windows: the 33% rule
Your front side windows — the two windows next to the driver and front passenger — must transmit at least 33% of visible light. This is measured as visible light transmittance (VLT), a percentage that tint shops can measure with a light meter. If your tint blocks more than 67% of light, it violates Arizona law.
This rule applies whether you're tinting a new car or an older one. The measurement is taken on the tinted window itself, not on the glass before tinting. If you buy a used car that already has illegal tint on the front windows, you are responsible for bringing it into compliance — the previous owner's choice does not protect you from a ticket.
Many drivers choose to tint their front windows to the legal limit (33% VLT) because it still provides privacy and heat reduction without crossing into illegal territory. A reputable tint shop will know this standard and can install tint that meets it.
Rear and back windows: no darkness limit
Arizona law does not set a darkness limit for your rear side windows or your back window. You can tint these windows as dark as you want — including limo tint or complete blackout — and remain in compliance with state law.
The reason for this difference is that rear windows do not affect the driver's forward visibility, which is the safety concern behind front-window tint rules. Police cannot stop you for tint darkness on the rear or back window alone. This gives you the freedom to maximize privacy and heat reduction in the back of your vehicle without legal worry.
Windshield tint: the AS-1 line rule
Your windshield can have a tinted strip across the top, but only above the AS-1 line. The AS-1 line is a manufacturer's marking on the windshield itself — usually a thin line or band near the top — that marks the boundary between the area designed for the sun visor and the area designed for clear visibility. Tint cannot extend below this line.
If your windshield does not have a visible AS-1 line, the tint strip cannot extend more than 5 inches down from the top of the windshield. This rule exists because tint below the AS-1 line would obstruct the driver's view of the road and oncoming traffic. Before you have windshield tint installed, ask the shop to identify the AS-1 line on your specific vehicle so you both know where the legal boundary is.
Medical exemptions for light-sensitive conditions
Arizona allows a medical exemption for drivers with conditions that make them sensitive to light, such as lupus, porphyria, or severe photophobia. If you have a may have access to condition, you can tint your front side windows darker than 33% VLT, and you can tint your windshield beyond the AS-1 line limits.
To use a medical exemption, you must carry a signed statement from a licensed physician in your vehicle at all times. The statement must identify your condition and explain why you need darker tint. You do not need to register the exemption with the state or obtain a special permit — the doctor's letter is your proof.
If you are stopped by police and have the letter, show it when ready. Without the letter, you have no exemption, even if you have the condition. Keep the letter in your glove box or on your person so you can produce it quickly. The letter is your only protection, so do not rely on verbal explanations or medical records alone.
Penalties and how to resolve a tint violation
Illegal window tint is a civil traffic offense in Arizona, not a criminal one. The fine amount varies by county but typically ranges from $50 to $150. The violation does not add points to your driving record, but it is still a ticket you must address.
If you receive a ticket for illegal tint, you have several options. You can pay the fine and keep the tint (which means you remain in violation). You can remove the tint and request that the ticket be dismissed — many courts will dismiss the ticket if you show proof of removal, such as a receipt from a tint shop. You can also contest the ticket in traffic court if you believe the measurement was wrong or your tint actually complies with the law.
The fastest resolution is usually to remove the tint and bring the dismissal paperwork to the court listed on your ticket. Some courts allow you to do this by mail; others require you to appear in person. Call the court phone number on your ticket to ask about their specific process.
What happens if you ignore a tint ticket
Ignoring a tint ticket does not make it go away. If you do not pay the fine or respond to the ticket, the court may suspend your vehicle registration, issue a warrant for your arrest, or refer the debt to a collection agency. Arizona courts take unpaid traffic fines seriously, even for minor violations.
If you cannot pay the fine when ready, contact the court and ask about a payment plan. Most courts will work with you on timing rather than escalate the case. Addressing the ticket — whether by paying, removing the tint, or contesting it — is always better than letting it sit. The longer you wait, the more complications can pile up.
Frequently Asked Questions
Can I tint my windows darker if I have a medical reason but no doctor's letter yet?
No. The law requires the signed physician's statement to be in your vehicle when you drive. If you are stopped without the letter, you have no exemption, even if you have the condition. Get the letter from your doctor before you tint your windows.
Does Arizona recognize medical tint exemptions from other states?
Arizona law does not specify whether it honors exemptions from other states. To be safe, obtain a letter from an Arizona-licensed physician. If you move to Arizona with out-of-state medical tint, contact the Arizona Department of Transportation or your local police department to ask whether your existing exemption is recognized.
What if I bought a car with illegal tint already on it?
You are responsible for the tint on your vehicle, regardless of who installed it. If you are stopped, you cannot use the previous owner as a defense. Your options are to remove the tint or obtain a medical exemption. If you were ticketed, you can still remove the tint and request dismissal.
Can a tint shop measure my windows to make sure they're legal before I buy a car?
Yes. Many tint shops have light meters and can measure the VLT of existing tint for a small fee or sometimes for free. This is a good step before buying a used car with aftermarket tint, so you know whether you'll need to remove it.
Do I need to notify the DMV if I remove illegal tint?
No. The DMV does not track window tint. You only need to address the ticket itself through the court that issued it. Removing the tint and providing proof to the court is the way to resolve the violation.