Tint Regulations

All You Need to Know About Window Tint Darkness and Reflection in Montana

Window Tint Darkness and Reflection: Everything You Need to Know

Driving in the scorching sun is an uncomfortable experience, to say the least. Besides causing discomfort, prolonged exposure to sunlight can also cause skin damage.

When it comes to finding a solution to such problems, window tinting seems like a practical option. Not only does it reduce heat, but it also offers privacy by reducing visibility from the outside.

However, before getting your windows tinted, it is important to understand various considerations such as window tint darkness and reflection. Window Tint Darkness:

Window tint darkness is measured in Visible Light Transmission (VLT) percentages, which refers to the amount of sunlight that can pass through the window.

The lower the VLT percentage, the darker the tint, and vice versa. The level of darkness you can legally apply to your windows is regulated by law, which varies from state to state.

It is important to consult the regulations in your state before applying window tint to avoid being penalized. Sedans:

For sedans, the windshield, front side windows, back side windows, and rear window are considered in the VLT percentage requirements.

In most states, the allowable VLT percentage for the windshield is 70%, which means at least 70% of visible light must pass through the glass. The front side windows can often have a VLT of 50%, while the back side and rear window can have up to 35% VLT.

SUVs and Vans:

SUVs and Vans, on the other hand, often have different VLT requirements. For instance, in most states, the allowable VLT percentage for the windshield is 70% for SUVs, compared to 90% for sedans.

The front side windows and back side windows can have a VLT percentage of around 35%, while the rear window usually has the darkest VLT percentage of around 5%-15%. Window Tint Reflection:

Window tint reflection refers to the amount of visible light that reflects off the surface of the tinted window.

Reflectivity percentages vary depending on the type and color of tint material used. There are two types of window tint, metalized film and non-metalized film.


For sedans, the front and back side windows often have their own standards for allowable reflectivity percentages. In many states, the allowable front side window reflectivity percentage is 35%, and the back side window reflectivity is 15%.

SUVs and Vans:

In SUVs and vans, the allowable reflectivity percentages for the front and back side windows are often similar to or slightly lower than those for sedans. Benefits of Window Tinting:

One of the key benefits of window tinting is heat reduction.

Window tint reflects sunlight, reducing the amount of solar energy that enters the car, resulting in a cooler interior. Tinted windows also provide increased privacy and security, as it is difficult for outsiders to see inside your car.

Another benefit of window tinting is that it reduces glare, which can be a dangerous distraction while driving, especially in bright sunlight. By lowering the glare, tinted windows make it easier to concentrate on the road, reducing the chances of an accident.

Final Words:

Whether you drive a sedan, SUV or Van, window tinting can make your driving experience more comfortable, secure, and safer. Consult the regulations in your state before applying window tinting, and choose the level of VLT and reflectivity that meets both legal requirements and your preferences.

Contact a professional installer who is licensed and has experience in window tinting for best results.

Other Montana Window Tint Rules and Regulations

In addition to the general regulations on window tint darkness and reflection, Montana has specific rules regarding side mirrors, restricted colors, certificates, stickers, medical exceptions, and penalties. Side Mirrors:

Unlike some states that have restrictions on the number and placement of side mirrors when window tint is applied, Montana does not have any such restrictions.

While tinted windows may reduce visibility through the glass, drivers can compensate by adjusting their mirrors to ensure clear and safe driving.

Restricted Colors:

Montana has no restrictions on the color of tint allowed on vehicles; however, it is important to remember that certain colors may be illegal in other states.

For instance, some states do not allow red or blue tints on cars because they often conflict with the colors of law enforcement vehicles. Certificates:

Unlike some states that require film manufacturers to certify that their products meet American National Standards Institute (ANSI) safety standards, Montana does not have such requirements.

However, it is recommended that drivers choose films that conform to the ANSI standards to ensure that they are safe and effective. Stickers:

Montana does not require stickers that identify the use of window tint on a vehicle.

However, it is recommended that drivers apply identifying stickers to their tinted windows to ensure that the tint is immediately recognizable to law enforcement officials and others. Medical Exceptions:

Montana allows for medical exceptions to the window tint regulations for drivers who have certain medical conditions.

Those with conditions that make them sensitive to light can apply for special tint that can allow less visible light transmission through their windows. Additionally, they will need to fill out a form that will identify the medical condition and the need for the special window tint.


Violating Montana’s window tint regulations can result in a misdemeanor crime, punishable by a fine, imprisonment or both. The degree of the penalty depends on the nature of the offense.

Montana Overview:

Montana is a state in the United States that is known for its vast open spaces and natural beauty. The state is home to many different industries and sectors, including agriculture, mining, tourism, healthcare, and government.


Agriculture is the largest industry in Montana, with beef cattle, wheat, and barley being the leading exports. Montana is also home to a significant mining industry, which produces coal, gold, silver, and copper.

The healthcare sector is also a significant contributor to the state’s economy, accounting for over 10% of all employment in the state. Additionally, government jobs at both the state and federal level are a significant part of Montana’s economy.

Tourist Attractions:

Montana is home to several popular national parks and monuments, including Glacier National Park, Little Bighorn Battlefield National Monument, and Yellowstone National Park. Glacier National Park is located in the Rocky Mountains and is known for its stunning glaciers, mountain peaks, and alpine lakes.

The Little Bighorn Battlefield National Monument is a memorial to the 1876 battle between the U.S. Army’s Seventh Cavalry and the Plains Indians. Yellowstone National Park is a geothermal wonderland filled with geysers, hot springs, and a wide range of wildlife.

Capital City and Population:

Helena is the capital city of Montana and is located in the western part of the state. With its population of nearly 33,000 people, Helena ranks as the sixth-largest city in Montana.

Despite its size, Helena offers a wide range of cultural and educational opportunities, such as museums, galleries, and libraries, as well as outdoor activities such as hikes, biking trails, and fishing. Montana Cities:

Besides Helena, Montana is home to several other major cities, including Billings, Missoula, Bozeman, Great Falls, and Kalispell.

Each city has its own unique charm and attractions, from Bozeman’s rich history and Great Falls’ stunning waterfalls to Missoula’s vibrant arts and culture scene. Montana Counties:

Montana is divided into 56 counties, each with its own county seat, government, and courthouse.

The counties range in size from less than 1,000 people to over 150,000 people. Some of the largest counties in Montana include Yellowstone County, Gallatin County, Missoula County, and Flathead County.

As with any state, the counties within Montana offer unique cultural and geographic features.

Tint Law References

Before installing window tint on your vehicle, it is crucial to understand Montana’s tinting laws and regulations. Montana’s tint laws are based on the Visible Light Transmission (VLT) percentage, which measures the amount of light passing through the window film.

Below are some references to help you understand Montana’s window tinting laws and regulations. Montana Code Annotated (MCA) 61-9-410:

MCA 61-9-410 is the primary reference for Montana’s window tint laws.

The law specifies the requirements for VLT percentages, which vary depending on the type of window and the position of the window on the vehicle. The law requires that the windshield must have a VLT percentage of at least 70%, and that the front side windows must have a VLT of no less than 24%.

The law also states that back side and rear windows may have a VLT of no less than 14%. Montana Code Annotated (MCA) 61-9-411:

MCA 61-9-411 provides additional specifications regarding reflectivity of window tint.

Reflectivity is the amount of visible light that reflects off the surface of the tinted window. The law requires that the front and back side windows must have no more than 35% reflectivity.

A vehicle with a mirror-like finish is not permitted. Montana Administrative Rules (MAR) 18.8.418:

MAR 18.8.418 outlines additional guidelines for window tinting in Montana.

The rule requires motorists to have the state-approved sticker to identify the vehicle’s tinting. The form is submitted to the Department of Justice.

Exemptions to the Montana Tint Law:

Montana’s tint law does not apply to vehicles that have factory-installed tinted windows that already meet Montana’s tinting requirements. However, after-market tinting added to the factory-tinted windows must still comply with the state’s tinting regulations.

Medical exceptions may also be allowed for those who have medical certificates for photo/light sensitivity. They may be eligible to use special tint, which will generally lower the VLT percentage on the windows.

Penalties for Violations:

Violating Montana’s window tinting laws may result in a misdemeanor offense punishable by a fine or even arrest. The owner of the vehicle may be subject to a $100 fine for a first-time offense.

If the violation is an ongoing problem, the fine may range up to $500.

In summary, Montana’s window tinting laws regulate the amount of light that can pass through the car windows, as well as the reflectivity of the tint.

It’s important to be aware of these regulations when considering your options for window tinting. Following the state’s laws will ensure that you avoid any unnecessary penalties, and you can enjoy the benefits of having tinted windows while driving.

In conclusion, understanding window tint darkness and reflection is crucial for every vehicle owner in Montana. By complying with the state’s regulations on Visible Light Transmission (VLT) percentages and reflectivity, drivers ensure both their safety and legal compliance.

Remember to consult Montana Code Annotated (MCA) 61-9-410 and MCA 61-9-411 to determine the specific requirements for VLT and reflectivity. Additionally, it is important to be aware of exemptions for medical conditions and the penalties for violating tint laws.

By adhering to these guidelines, vehicle owners can enjoy the benefits of window tinting while avoiding any legal issues. Stay informed, stay safe, and enjoy the comfort and privacy that tinted windows provide.

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