Missouri Window Tint Laws (2026): Legal VLT Limits
Missouri Window Tint Laws (2026): Legal VLT Limits
Missouri law requires front side windows to allow at least 35% visible light transmission (VLT). The windows behind the driver have no specified VLT minimum, though dual outside mirrors are required if rear tint limits visibility.
What is the legal tint limit in Missouri?
Missouri sets a 35% VLT minimum for front side windows. That means your tinted front windows must let at least 35% of visible light pass through. A higher VLT percentage means lighter tint; a lower percentage means darker tint. So 35% is noticeably dark, but there is still a meaningful floor.
The windows behind the driver, including back side windows and the rear window, have no specified VLT minimum in Missouri statute. Drivers can apply any darkness to those windows. However, if rear tint limits your ability to see behind you, dual outside mirrors are required to maintain adequate rearward visibility.
| Window Position | Passenger Car | Multipurpose/SUV/Van/Truck |
|---|---|---|
| Front side windows | 35% minimum VLT | 35% minimum VLT |
| Back side windows | No restriction | No restriction |
| Rear window | No restriction | No restriction |
| Windshield | Factory tint only | Factory tint only |
The 35% front side limit applies regardless of vehicle type. Missouri does not create a separate, looser standard for SUVs or trucks on front side windows.
Windshield tint rules in Missouri
Missouri prohibits all aftermarket sun-screening material on the windshield. The only permitted windshield tint is factory-installed tint or a factory-standard upper strip that comes with the vehicle from the manufacturer.
Drivers cannot add a film or spray product to the windshield after purchase. This is stricter than many neighboring states, which at least allow a non-reflective top strip of a specific height. In Missouri, if it was not installed by the manufacturer, it does not belong on the windshield.
Missouri also caps reflectivity on front side windows at 35% luminous reflectance. No specific reflectivity rule is listed for the rear. No tint colors are expressly banned under the main tint statute, though the reflectivity limit would rule out highly mirrored finishes.
Medical exemptions
Missouri allows medical exemptions under RSMo 307.173. A vehicle owner can apply to the Department of Public Safety for a permit if a physician prescribes darker tint for a documented medical condition, such as a photosensitivity disorder or an eye condition that makes bright sunlight dangerous.
The DPS permit covers the titleholder and listed relatives who regularly ride in the vehicle. You should carry a copy of the permit in the vehicle so you can produce it during a traffic stop or inspection. Without the permit on hand, an officer cannot easily verify the exemption on the spot, and you risk a citation.
If you need a medical exemption, start by getting a written prescription from your physician that describes the condition and the need for reduced light. Submit that documentation to the Missouri DPS along with the permit application. Requirements may change, so check the current DPS process directly.
How tint is measured and certified
Missouri uses VLT meters (also called tint meters or photometers) to measure the percentage of visible light passing through a window. The meter is placed on the glass and gives a reading. Missouri statute allows a tolerance of plus or minus 3%, meaning a reading down to 32% would still satisfy the 35% minimum.
That tolerance can matter at a traffic stop. A reading of 33% would normally be within the allowed range. A reading below 32% is more clearly non-compliant.
Missouri does not require a compliance sticker or an installer certification label on tinted windows. However, getting documentation from your installer about the film's VLT rating is a smart practice. If the film peels, degrades, or is disputed at a stop, a certificate from the installer showing the VLT spec gives you a starting point for any dispute.
Penalties for illegal tint in Missouri
A vehicle operator who drives with non-compliant window tint in Missouri can be charged with a Class C misdemeanor. Missouri's Class C misdemeanor carries a fine of up to $750 and up to 15 days in jail, though tint citations in practice typically result in fines rather than jail time.
Installers and sellers of non-compliant film can also face liability under the statute. The practical consequence for drivers is usually a citation and an instruction to remove or replace the tint. Getting legal tint installed before a stop is far less costly than paying fines and removing non-compliant film after the fact.
If you receive a citation for illegal tint, the most common resolution is correcting the violation and appearing in court to show proof of correction. Some jurisdictions may treat this as a correctable offense, but that is not guaranteed under Missouri law.
If you want to tint your windows in Missouri
If you want window tint in Missouri, start with the front side windows and confirm the film you choose meets or beats the 35% VLT minimum. Given the plus or minus 3% tolerance, selecting a film rated at 35% should be fine, but going slightly lighter gives you a margin in case a meter reading comes in low.
For windows behind the driver, Missouri gives you full freedom on darkness. Many Missouri drivers choose 15-20% on back side and rear windows for privacy and heat rejection. There is no legal downside, as long as you add dual outside mirrors if the rear window is tinted.
When choosing an installer, ask for a written certificate that lists the VLT percentage for each window and the film manufacturer. Keep that document in the glove box alongside your registration. If you need a medical exemption for front windows darker than 35%, start with your physician before scheduling the installation.
Check with the Missouri DPS for any updates to the medical exemption application process, as procedures can change. The primary statute is RSMo 307.173, and the official revisor site at revisor.mo.gov is the most reliable place to verify current wording.
For more on how Missouri's rules fit into the broader national landscape, see our guide to Window Tint Laws by State. Missouri drivers may also want to review Missouri Windshield Mounting Restrictions, which covers related rules about objects attached near or on the windshield.
This article is general legal information, not legal advice. Window tint limits vary by state and change, and enforcement depends on local practice and your specific vehicle. For a definitive answer, check your state DMV or consult a local attorney.
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Sources
- Missouri Revisor of Statutes, RSMo 307.173: https://revisor.mo.gov/main/OneSection.aspx?section=307.173