
Quick Summary
- Montana law requires a minimum of 24% Visible Light Transmission (VLT) for front-side windows.
- Windshield tinting is allowed above the AS-1 line or the top 6 inches of the windshield.
- Backside windows and rear windows must allow more than 14% VLT.
- Reflective tints must not reflect more than 35% of light.
- Medical exemptions are available for individuals with specific health conditions.
Montana MVD Tint Laws: An Overview
Understanding Montana’s window tint laws is crucial for anyone looking to modify their vehicle’s windows. These regulations are in place to ensure the safety of drivers, passengers, and law enforcement officers. In this guide, I’ll walk you through everything you need to know about window tint percentages, tinting regulations, and how these can affect your insurance.
Understanding Montana’s Window Tint Laws
Some laws in Montana determine how dark or reflective window tints can be. The Visible Light Transmission (VLT) percentage measures these laws. This percentage refers to the light allowed to pass through your windows. The lower the VLT percentage, the darker the tint. Let’s explore these regulations in more detail.
The Importance of Window Tint Laws
Window tint laws aren’t just for show; they serve a vital safety purpose. Dark tints can hinder visibility, making it difficult for drivers to see the road and law enforcement officers to see into the car. So, following these laws isn’t just about dodging penalties; it’s about keeping everyone safe on the road.
Window Tinting and its Impact on Insurance
Window tinting can potentially impact your auto insurance. Penalties can occur for non-compliant tints and may even influence your insurance rates. Insurance providers may view non-compliant tinting as a risk, which could lead to increased rates or, in some instances, denial of coverage.
Rules for Window Tint Percentage
In Montana, the law provides specific VLT percentages for the different windows on your car. Knowing these percentages is essential to ensure you’re not breaking the law.
Windshield Tinting Legal Limits
Montana permits windshield tinting, but only above the AS-1 line or the top 6 inches of the windshield. The tint must be non-reflective. This rule guarantees that the driver’s view of the road is not blocked while still allowing some level of tinting for protection from the sun.
Front Side Window Tinting Guidelines
The front side windows of your car must let through more than 24% of light. This implies that your tints can be pretty dark but must provide enough visibility.
Tinting for the Back Side and Rear Windows
- Backside windows must let in over 14% of light.
- Rear windows must also let in over 14% of light.
These rules are slightly more relaxed than those for the front side windows, but they still maintain that there is adequate visibility for safety reasons.

Vehicle Type | Window Tint Percentage (VLT) |
---|---|
Passenger Vehicles | Front Windshield: AS-1 line |
Front Side Windows: > 24% | |
Back Window: > 14% | |
Multi-Purpose Vehicles | Front Windshield: AS-1 line |
Front Side Windows: > 24% | |
Rear Window: No restrictions | |
Reflectivity Limits | Front Side Windows: ≤ 35% reflective |
Prohibited Colors | Red, yellow, and amber not allowed |
Medical Exemptions | Special tint may be allowed with certification |
Reference:
https://www.nationaltintinglaws.com/montana-window-tint-laws/
Limitations on Reflective Tint
In addition to the VLT percentages, Montana also has rules about the amount of reflective window tints that can be used. While reflective tints can help cut down on glare and heat, if they’re too reflective, they can make it hard for other drivers to see.
Understanding Reflective Tint
The reflective tint is a kind of window film that bounces light off, thereby reducing glare and heat within the car. This tint, which is usually metallic, is designed to reflect light away from the window.
Reflective tints are especially useful in sunny climates because they keep the car cooler inside. However, if they’re too reflective, they can create a mirror-like effect, distracting or blinding other drivers.
“In Montana, reflective tints are allowed but must not reflect more than 35% of light. This rule allows you to reap the benefits of less glare and heat while also ensuring that you’re not causing a danger to other drivers. For more information, you can check out the Missouri DOR tint laws as a reference.”
Knowing these limits is essential to ensure your vehicle follows state rules.
Reflective Tint Laws in Montana
Montana law is very particular about how reflective your window tints can be. The light reflection off your window tint must be no more than 35%. This law applies to all windows on your vehicle, including the front, back, and rear windows.
Window | Maximum Reflectiveness |
---|---|
Front Side Windows | 35% |
Back Side Windows | 35% |
Rear Window | 35% |
Always verify the reflectiveness of the tint film you intend to apply. If you’re uncertain, seek advice from a professional tinting service to guarantee you’re within the law.
Medical Exceptions to Tinting Rules
Montana’s tint rules are rigid, but they do provide for medical exceptions. These exceptions permit people with some medical issues to have darker tints than the norm.
If you have a medical condition that makes you sensitive to sunlight, you may be able to get a medical exemption. This would allow you to use a darker tint on your vehicle windows legally.
Qualifying for Medical Exemptions
You may qualify for a medical exemption if you have a medical condition requiring reducing sunlight exposure. Conditions that often qualify include lupus, xeroderma pigmentosum, and extreme photosensitivity. You can check out the Colorado DMV tint laws for more information on related regulations.
You must get a written note from your doctor explaining your medical condition and why you need darker window tints. This note will be an essential part of your application for an exemption.
Steps to Apply for a Medical Exemption
There are several steps involved in applying for a medical exemption:
- Get a note from your doctor.
- Send the note and a filled-out application to the Montana MVD.
- Wait to hear back from the MVD. If they say yes, they’ll send you a paper you must keep in your car.
After you get your exemption, make sure your window tints match the description on the exemption paper. Keep the paper in your car so you can show it to the police if they ask.
How Tinting Affects Your Insurance
Tinting your windows can impact your car insurance in several ways. Knowing these impacts can help you make better decisions about your window tints.
The Impact of Tinting on Insurance Rates
Insurance providers consider many different aspects when calculating your rates, and one of those aspects is window tinting. Tints that don’t meet regulations can be viewed as a liability, which could result in increased rates. Conversely, tints that meet regulations and improve safety could result in discounts.
It’s essential to keep your insurance company informed about any changes you make to your vehicle, including adding window tint. This way, your policy will be up-to-date with your vehicle’s current status, and you’ll avoid surprises if you ever need to make a claim.
Insurance Problems Because of Non-Compliance
Non-compliant window tints can cause insurance problems. If your vehicle is in an accident and your tints are found to be illegal, your insurance company may refuse your claim. This is because non-compliance can be considered a contributing factor to the accident.
That’s why it’s so important to ensure your window tints meet Montana’s standards. This will not only keep you out of legal trouble but also ensure that your insurance coverage stays valid.
Adhering to Montana MVD Tint Laws
Adherence to Montana’s window tint laws is crucial for avoiding penalties and ensuring road safety. Adherence is more than just knowing the VLT percentages; it also requires knowledge of reflective limits and medical exemptions.
Regularly check your window tints to ensure they are within the legal limits. If unsure, you might want to have a professional tinting service check your windows. They can provide a certificate of compliance, which can come in handy if the police ever question you.
What Happens If You Don’t Follow the Rules
If you choose not to adhere to the window tint laws in Montana, you could face various penalties. These could include having to pay fines, being required to remove the unlawful tint, and possibly running into trouble with your vehicle registration. The amount you’ll have to pay in penalties can change, but they usually begin at about $100 for a first-time offense and can go up for future infractions.
Not only can non-compliance lead to fines, but it can also add points to your driving record. Too many points can lead to your driver’s license being suspended. It’s important to ensure your vehicle is up to code with all tinting regulations to avoid these penalties.
Final Thoughts: Keeping It Legal
Following the window tint laws in Montana isn’t just about dodging tickets; it’s about making the road safer for everyone. By sticking to the rules, you can reap the rewards of window tinting without worrying about legal trouble or insurance rate hikes. Check out the Minnesota DVS tint laws for more information on similar regulations.
It’s important to remember that being knowledgeable and taking action is crucial. Frequently inspect your window tints, seek advice from experts if needed, and always have any medical exemption paperwork in your car. By doing this, you’ll ensure that your car is in accordance with the law and safe for everyone on the road.

Common Questions
Montana’s window tint laws can be difficult to understand. Here are some common questions to help clarify any confusion.
What happens if you have an illegal tint in Montana?
Having illegal tint in Montana can result in fines of roughly $100 for a first offense. If you continue to break this law, you can expect higher fines, points on your driving record, and potentially even a suspension of your driver’s license. You may also have to remove the illegal tint to be by the law.
Does Montana have any restrictions on tint colors?
Indeed, Montana does have restrictions on tint colors. The state’s law does not allow the use of red, yellow, or amber tints. These colors are considered distracting and can decrease visibility, which can be dangerous for the driver and others on the road.
Is it legal to use reflective tint on all windows?
In Montana, reflective tints are permitted, but they must not reflect more than 35% of light. This regulation applies to all windows, including the front, back, and rear windows. Reflective tints are beneficial in reducing glare and heat; however, if they are overly reflective, they can cause visibility problems for other drivers.
How can I confirm that my tint is legal?
You can confirm that your tint is legal by getting a certificate of compliance from a professional tinting service. This certificate should provide the VLT percentage and reflectiveness of your tints. Keep this certificate in your vehicle to show to law enforcement if necessary. Additionally, you can use a VLT meter to measure the light transmission through your windows, ensuring they comply with Montana’s rules.
Staying informed and proactive can help you reap the benefits of window tinting while complying with Montana’s laws. Regularly inspect your tints, seek professional advice, and always keep any medical exemption documents in your vehicle. This will ensure your vehicle is safe and legal to drive.
If you want to learn more, visit the Montana Department of Motor Vehicles’ official website or speak with a professional window tinting service.
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