On this page
- What Are the Missouri Window Tinting Laws in 2026?
- What Tint Percentage Is Legal on Missouri Front Side Windows?
- How Dark Can Rear Side Windows and the Rear Window Be in Missouri?
- Is Windshield Tint Legal in Missouri?
- What Does VLT Mean, and Are 70%, 50%, 35%, 20%, and 5% Tint Legal in Missouri?
- Does Missouri Limit Tint Reflectivity, Colors, or Side Mirrors?
- How Does Factory Privacy Glass Differ From Aftermarket Window Tint?
- Do SUVs, Vans, and Trucks Follow Different Tint Rules Than Cars?
- How Does a Missouri Medical Tint Permit Work?
- Does Missouri Require a Tint Sticker or Certificate?
- Which Common Missouri Tint Claims Are Not in the Statute?
- What Happens When Window Tint Is Too Dark in Missouri?
- What Should Columbia Drivers Remember About Missouri Window Tinting Laws?
- Frequently Asked Questions
Missouri window tinting laws are short, but many online tint summaries add rules the Missouri statute never states. Legends Auto Spa checked section 307.173 of the Missouri Revised Statutes against official state sources on October 1, 2026. This guide shows Columbia, MO drivers what is legal on the windshield, front sides, rear sides, and rear glass.
What Are the Missouri Window Tinting Laws in 2026?
Missouri allows tint on front side windows that lets in 35% or more light, plus or minus 3%. That tint must also reflect 35% or less light, plus or minus 3%. Rear side windows and the rear window have no darkness limit in the statute.
Aftermarket windshield tint is prohibited, except on the upper portion the manufacturer normally tints. Factory-installed tinted glass is also allowed.
As of October 1, 2026, the Missouri Revisor of Statutes lists section 307.173 as effective August 28, 2010. No newer amendment appears. Because the limits come from state law, they apply in Columbia, Jefferson City, and Kansas City.
This guide summarizes the text of section 307.173 for general information and is not legal advice. For questions about a specific vehicle or citation, read the full statute on the Missouri Revisor of Statutes site and check with the Missouri State Highway Patrol or an attorney.
Missouri Window Tint Law Table
| Window | Missouri rule (RSMo 307.173) | What it means |
|---|---|---|
| Windshield | All sun-screening devices prohibited, except tint on the upper portion the manufacturer normally tints | No aftermarket film below the factory band |
| Front side windows | Light transmission of 35% or more and reflectance of 35% or less, each plus or minus 3% | Film and glass together must read 35% or lighter |
| Rear side windows | No limit stated | Any darkness under the tint statute |
| Rear window | No limit stated | Any darkness under the tint statute |
| Darker front tint | Permit with a physician’s prescription | Medical exemption only |
| Violation | Class C misdemeanor | Maximum $750 fine and 15 days in jail |
What Tint Percentage Is Legal on Missouri Front Side Windows?
Missouri regulates the front side-window vents and windows immediately left and right of the driver. The sun-screening device, together with the safety glazing, must allow 35% or more light through. The reflectance limit is 35% or less, and both numbers have a plus-or-minus 3% tolerance.
Film and Factory Glass Count Together
The statute measures tint “in conjunction with safety glazing material,” so the factory glass counts too. Light passes through both layers, so the percentages multiply. As simple math, not a Missouri rule, a 50% film over glass that passes 70% of light reads about 35%.
Can Drivers Rely on the Plus or Minus 3% Tolerance?
Planning around the tolerance is risky, since the statute does not explain how officers apply it. Drivers should measure the finished window and remain at 35% or lighter. Legends Auto Spa can check front shade options through its window tint installation service in Columbia, MO.
How Dark Can Rear Side Windows and the Rear Window Be in Missouri?
Section 307.173 contains no darkness limit for rear side windows or the rear window. Under the tint statute, you may use 20%, 5%, or any other shade on that glass. The same applies to vehicles with factory privacy glass in the back.
A legal shade is not always practical, because very dark rear film reduces night visibility while backing up. That is general tint-industry advice, not a legal limit.
Missouri also has a separate mirror rule in section 307.170. It requires a mirror showing the road behind when drivers cannot see it by looking back or around the side. The next sections cover how that rule fits with tint.
Is Windshield Tint Legal in Missouri?
Aftermarket film across the windshield is not legal in Missouri. Section 307.173 prohibits sun-screening devices on the windshield. The statute allows factory-installed tinted glass, its equivalent replacement, and tint on the upper portion the manufacturer normally tints.
The statute gives no inch measurement for that upper portion. Some shops use the AS-1 marking printed on many windshields to locate the factory band. Treat that marking as a guide, not statutory text.
Legends Auto Spa offers a windshield visor strip and tells drivers to confirm what applies before booking. For questions about a specific vehicle, contact the shop or the Missouri State Highway Patrol.
What Does VLT Mean, and Are 70%, 50%, 35%, 20%, and 5% Tint Legal in Missouri?
VLT stands for visible light transmission, which is the percentage of visible light passing through the glass and film. A lower percentage means a darker, less transparent tint.
Missouri’s statute uses the words “light transmission,” and tint shops use VLT for the same measure. The table shows how common shades compare under the tint statute.
| Shade | How it looks | Front side windows | Rear side windows and rear window |
|---|---|---|---|
| 70% | Very light, close to clear | Legal when the finished glass reads 35% or more | No limit in the statute |
| 50% | Light smoke | Legal when the finished glass reads 35% or more | No limit in the statute |
| 35% | Medium | Legal only if film and glass together read 35% or more | No limit in the statute |
| 20% | Dark | Not legal without a medical permit | No limit in the statute |
| 5% | Limo black | Not legal without a medical permit | No limit in the statute |
Is 20% tint legal in Missouri? Only on rear side windows and the rear window, since front side windows need 35% or more. The same answer applies to 5% tint.
Need Legal Front Door Tint in Columbia?
Front door tint in Columbia has to meet Missouri’s 35% limit, while rear glass can go darker. Call (573) 825-1446 to compare carbon and ceramic film, check shade options for your vehicle, and book a window tint estimate with a local Columbia, MO shop.
Does Missouri Limit Tint Reflectivity, Colors, or Side Mirrors?
Missouri limits reflectivity, but only on the front side windows. Reflectance describes how much light bounces off the glass surface, much like a mirror. The limit is 35% or less, plus or minus 3%, with no reflectance limit stated for the rear glass.
Restricted Tint Colors
Section 307.173 does not list any banned tint colors. A driver should not assume a color rule from another state’s law. Highly mirrored films still struggle to meet the front reflectance cap.
Side Mirror Requirements
The tint statute does not make rear tint depend on dual side mirrors. Section 307.170 sets a broader rule: vehicles that block the driver’s rear view need a mirror showing the road behind. Properly adjusted outside mirrors remain a smart safety habit on any tinted vehicle.
How Does Factory Privacy Glass Differ From Aftermarket Window Tint?
Factory privacy glass has dark pigment mixed into the glass during manufacturing. Aftermarket tint is a film applied to the inside of existing glass. Privacy glass cannot be peeled off, while film can be removed.
Missouri’s statute does not prohibit factory-installed tinted glass or its equivalent replacement. Film over factory front side glass still counts toward the 35% limit, since both layers are measured together. No darkness limit applies to the rear windows.
Many SUVs and trucks leave the factory with privacy glass behind the front doors. The front side windows are therefore the main legal decision. Owners can add film to blend front and rear shades once the finished front glass reads 35% or more.
Do SUVs, Vans, and Trucks Follow Different Tint Rules Than Cars?
Section 307.173 does not split its rules by vehicle class. Sedans, coupes, SUVs, vans, and trucks all follow the same front side window limit. The windshield rule and the rear glass rule are also the same for each class.
The statute includes two exceptions: recreational vehicles as defined in section 700.010, and vehicles with historical license plates. Tinted or solar screening material on a recreational vehicle must not interfere with the driver’s normal view. Vehicles with historical plates are exempt from the whole section.
Passenger vehicles with large rear glass, such as vans and SUVs, often start with privacy glass. Film choices there mostly affect heat and glare, not legal compliance.
How Does a Missouri Medical Tint Permit Work?
Missouri allows darker front side window tint only with a permit based on a physician’s prescription. The permit is for a person with a serious medical condition that requires the sun-screening device. Under 11 CSR 30-7.010, the Missouri State Highway Patrol Motor Vehicle Inspection Division issues the permit.
The applicant presents a valid prescription issued within one year, along with the vehicle. The prescription must state that the condition requires window tint with less than 35% light transmission. One prescription can cover several vehicles, but you must present each vehicle.
The permit includes a sticker on the lower left windshield and a decal on the rear glass or bumper. A copy stays in the vehicle. The statute lets any titleholder or relative within the second degree who lives in the household operate the vehicle.
Does Missouri Require a Tint Sticker or Certificate?
Section 307.173 does not require a compliance sticker or film certificate for tint within the legal limits. The sticker and decal system applies only to medical permits. The statute also does not say film makers must certify their product.
Drivers can still keep the installer’s receipt and film warranty papers. That is good practice, not a legal duty. Inspection rules sit outside section 307.173 and can change, so check Missouri State Highway Patrol guidance for current inspection questions.
Which Common Missouri Tint Claims Are Not in the Statute?
Some online summaries add rules that the Missouri statute does not contain. The table compares common claims with the statute text.
| Common claim | What section 307.173 says |
|---|---|
| Windshield tint is allowed on the top 6 inches | Tint is allowed on the upper portion the manufacturer normally tints, with no inch measurement |
| Red and amber tint are banned | The statute lists no banned colors |
| Dual side mirrors are required for tinted rear windows | The tint statute sets no mirror condition, though section 307.170 has a general mirror rule |
| A sticker or film certificate is required | Not stated for standard tint, since stickers apply to medical permits |
| SUVs and vans have different front window limits | The statute has no vehicle class split for front side windows |
| Missouri sets a small fixed fine for tint | The statute makes a violation a class C misdemeanor |
What Happens When Window Tint Is Too Dark in Missouri?
Section 307.173 makes a tint violation a class C misdemeanor. Missouri law sets the maximum fine for that class at $750 under section 558.002. Section 558.011 sets a maximum jail term of 15 days.
Those figures are statutory maximums, not typical outcomes, and the court decides the actual result in each case. Replacing darker front film with a legal shade removes the ongoing problem. If you are budgeting for replacement film or tint removal, our Columbia window tinting cost guide lists typical prices and removal fees.
Readers can review the full text on the Missouri Revisor of Statutes site for section 307.173. The page shows the statute’s history and current wording.
What Should Columbia Drivers Remember About Missouri Window Tinting Laws?
Missouri window tinting laws focus on the front side windows and the windshield. Front side tint must read 35% or more with reflectance of 35% or less. Rear side windows and the rear glass have no darkness limit, and aftermarket windshield tint is prohibited.
Legends Auto Spa installs carbon and ceramic window film at 5051 S Providence Rd Ste 103. Drivers across Columbia, Ashland, Fulton, and Jefferson City can read more in the shop’s window tint guides.
Plan Legal Window Tint in Columbia, MO
Planning window tint in Columbia and want it to match Missouri law? Legends Auto Spa can walk you through film options, front window limits, and rear shade choices at 5051 S Providence Rd Ste 103. Call (573) 825-1446 to schedule a legal tint estimate.
Frequently Asked Questions
Is 20% tint legal on the front windows in Missouri, or only on the back windows?
No. Missouri requires front side windows to let in 35% or more light, plus or minus 3%, so 20% film is too dark there without a medical permit. Section 307.173 sets no darkness limit for the rear side windows or rear window, so 20% tint is allowed on that glass. A tint meter confirms front readings.
Is 5% limo tint legal anywhere on a car in Missouri?
Only on the rear side windows and the rear window. Section 307.173 sets no darkness limit for that glass, but front side windows must stay at 35% or more. The windshield allows no aftermarket tint. Many drivers still choose 20% to 35% in the back for better night visibility when backing up.
Are 70%, 50%, and 35% tint legal on Missouri front side windows?
Yes, when the finished window reads 35% or more light, plus or minus 3%. Film and factory glass are measured together, so a 35% film over tinted glass can read darker than 35%. A 70% or 50% film is the safer front door choice, and a shop can quickly measure the result with a tint meter.
Can a Missouri driver tint any part of the windshield?
Only on the upper portion that the manufacturer normally tints. Section 307.173 prohibits other sun-screening devices on the windshield but allows factory tinted glass and tint on that upper band. The statute gives no inch measurement, so confirm the factory band on the vehicle first.
How much is the fine for illegal window tint in Missouri?
Missouri classifies illegal tint as a class C misdemeanor. State law caps that class at a $750 fine and 15 days in jail, but those are maximums. The tint statute sets no smaller fixed fine, so the court decides the result. Replacing front film with a legal shade fixes the problem.
How can a Missouri driver get a medical exemption for darker front window tint?
A physician must prescribe darker tint for a serious medical condition. The applicant brings that prescription, issued within one year, and the vehicle to the Missouri State Highway Patrol Motor Vehicle Inspection Division. The permit comes with a windshield sticker and rear decal.
