Is 5% tint legal in Missouri?

On the rear side windows and back glass, yes — Missouri allows any darkness behind the driver under RSMo 307.173, provided the vehicle has dual side mirrors. Front side windows must allow at least 35% of light through, with a 3% tolerance.

Can I tint my whole windshield in Kansas or Missouri?

No. Both states allow only a non-reflective strip above the manufacturer's AS-1 line, typically the top 5–6 inches of the windshield. Kansas additionally prohibits red, yellow, or amber windshield tint.

Does Kansas have a medical exemption for darker window tint?

No. Kansas does not issue permits for tint darker than 35% VLT. The statute's only medical carve-out covers clear, colorless UV-protective film with a physician's or optometrist's statement — it does not permit darker shades.

What is the darkest legal tint in Kansas?

35% VLT on every window. Kansas applies the same 35% minimum to front side windows, rear side windows, and the rear window, with no darker allowance for SUVs, trucks, or vans.

What tint is legal in both Kansas and Missouri?

35% VLT or lighter on every window is legal in both states. Modern ceramic films such as KAVACA Ceramic IR and Ultimate IR provide high heat rejection at legal shades, so drivers who cross the state line daily don't have to sacrifice performance for compliance.

How is window tint measured by police?

With a handheld VLT meter placed on the glass during a traffic stop or inspection. The meter reads the combined light transmission of the glass and the film together, which is why factory-tinted glass plus aftermarket film can measure darker than the film's rated percentage.

Kansas & Missouri Window Tint Laws (2026) | Legal Tint Limits Explained

Last verified: July 2026 · Written by the team at Ceramic Pro Fuel House, Bonner Springs, KS

Our shop sits minutes from the state line, so we tint vehicles registered in Kansas and Missouri every single week — and the two states play by very different rules. What's perfectly legal on a Missouri-plated truck can get a Kansas driver pulled over on K-7.

Here's exactly what's legal in each state, straight from the statutes (K.S.A. 8-1749a for Kansas, RSMo 307.173 for Missouri) — no guesswork, no recycled blog myths.

The 30-Second Version

Kansas: Every window — front sides, rear sides, and back glass — must let in at least 35% of light. No exceptions for SUVs or trucks. No darker-tint medical exemption.
Missouri: Front side windows must let in at least 35% of light (±3% meter tolerance). Rear side windows and back glass can be as dark as you want. Medical permits for darker front tint are available.

What Does VLT Mean?

Tint darkness is measured in VLT — Visible Light Transmission — the percentage of visible light that passes through the glass and the film combined. Lower number = darker tint.

70%Nearly clear

50%Light smoke

35%KS & MO front limit

20%MO rear only

5%Limo · MO rear only

LighterDarker

Important: VLT is measured through film + glass together. Factory glass already blocks some light, so a "35% film" on factory glass often meters below 35%. A good shop measures the final combined number — we do, on every install.

Kansas Window Tint Laws

Kansas regulates tint under K.S.A. 8-1749a, on the books since 1987. Kansas is one of the stricter states in the country: the same rule applies to every window and every vehicle type.

Window	Kansas legal limit
Windshield	Non-reflective tint above the AS-1 line only. No red, yellow, or amber.
Front side windows	35% VLT minimum, non-reflective
Rear side windows	35% VLT minimum, non-reflective
Rear window	35% VLT minimum, non-reflective

No SUV/truck carve-out. Unlike most states, Kansas holds rear glass to the same 35% floor as the front. Sedan, SUV, van, pickup — same rule.
Non-reflective only. Mirrored and metallic films are prohibited on all windows.
No medical exemption for darker tint. Kansas does not issue permits for tint below 35% VLT. (The statute's only carve-out is for clear, colorless UV-blocking film with a physician's or optometrist's statement — it does not allow darker tint.)
Factory privacy glass: many trucks and SUVs ship with rear glass around 15–25% VLT. That factory glass is legal — but adding aftermarket film on top takes the combined reading further below 35%, which is where Kansas drivers get into gray territory. Talk to us before layering film over factory tint on a Kansas-registered vehicle.
Penalty: violating 8-1749a is a misdemeanor in Kansas, and illegal tint is a valid reason for a traffic stop on its own.

Missouri Window Tint Laws

Missouri regulates tint under RSMo 307.173 and is one of the more relaxed states — but the front windows are still firmly enforced.

Window	Missouri legal limit
Windshield	Non-reflective tint above the AS-1 line only
Front side windows	35% VLT minimum (±3% tolerance), max 35% reflectance
Rear side windows	Any darkness
Rear window	Any darkness (dual side mirrors required)

Rear glass is unregulated for darkness. 20%, 5%, full limo — all legal behind the driver, on any vehicle type, as long as you've got side mirrors on both sides.
Built-in ±3% tolerance. The statute allows plus-or-minus three percent, so a front window metering 32% is still compliant.
Reflectivity cap: side windows can't exceed 35% reflectance. Skip mirrored films — ceramic tint beats them on heat rejection anyway.
Factory tint is exempt under the statute, as are equivalent replacements.
Medical exemptions exist. Missouri issues darker-tint permits (see below).

Missouri's Medical Tint Permit (SHP-524): If a medical condition requires more sun protection than 35% film provides, Missouri has a real process:

Get a physician's prescription (issued within the past year) stating the condition and the tint level needed.
Bring the prescription and the vehicle to a Missouri State Highway Patrol Motor Vehicle Inspection Division location.
The Patrol verifies the prescription and issues the SHP-524 permit — a sticker on the lower-left windshield and a decal on the rear glass or bumper.
Keep the permit paperwork in the vehicle.

Kansas has no equivalent program.

Kansas vs. Missouri: Side by Side

Rule	Kansas	Missouri
Front side windows	35% VLT min	35% VLT min (±3%)
Rear side windows	35% VLT min	Any darkness
Rear window	35% VLT min	Any darkness
Windshield	Above AS-1 line, non-reflective	Above AS-1 line, non-reflective
Reflective/mirrored film	Prohibited	Max 35% reflectance
Medical exemption (darker tint)	No	Yes (SHP-524 permit)
Statute	K.S.A. 8-1749a	RSMo 307.173

The state-line trap: a Missouri-registered vehicle with 5% rear tint is legal in Missouri — but Kansas law applies to vehicles registered in Kansas. Dark rear glass isn't made legal by driving to a Missouri shop to install it. If you drive both sides of the metro daily, the safest play is 35% or lighter on every window.

Get a Free Tint Quote

The Good News: You Don't Need Illegal Tint Anymore

Most drivers think darker means cooler. It doesn't. Heat rejection comes from the film technology, not the darkness. Old-school dyed film needs to be dark to do anything. Modern ceramic and IR-rejecting films block heat at any darkness level:

KAVACA Carbon X

Carbon-based construction, deep color stability, serious heat rejection at fully legal shades.

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KAVACA Ceramic IR

Nano-ceramic film that blocks up to 96%+ of infrared heat and 99% of UV, even at 70% VLT.

Explore Ceramic IR →

KAVACA Ultimate IR

The top of the line. Maximum IR rejection in a film light enough to stay legal on every window.

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A 70% KAVACA Ceramic IR windshield strip plus 35% Ceramic IR sides will out-cool an illegal 15% dyed film — legally, with a lifetime warranty, and without the pull-over risk.

Frequently Asked Questions

Is 20% tint legal in Kansas?

No. Kansas requires at least 35% VLT on every window — front sides, rear sides, and the back glass. 20% is below the limit anywhere on a Kansas-registered vehicle.

Is 20% or 5% tint legal in Missouri?

On the rear side windows and back glass, yes — Missouri allows any darkness behind the driver. On the front side windows, no — those must allow at least 35% of light through (±3%).

Can I tint my whole windshield?

No, in both states. Only a non-reflective strip above the manufacturer's AS-1 line (usually 5–6 inches down from the top) is allowed. If there's no visible AS-1 line, the top 5 inches is the safe standard. A clear or near-clear ceramic film like 70% KAVACA Ceramic IR on the strip blocks heat without visibly darkening anything.

Does Kansas have a medical exemption for darker tint?

No. Kansas does not issue permits for tint darker than 35% VLT. The only medical carve-out in the statute is for clear, colorless UV-protective film with a physician's or optometrist's statement — it does not allow darker shades.

Does Missouri have a medical exemption?

Yes. With a physician's prescription issued within the past year, the Missouri State Highway Patrol can issue an SHP-524 permit allowing darker front-window tint.

My SUV came with dark factory glass. Can I add film on top?

In Missouri, yes — rear glass has no darkness limit. In Kansas, be careful: the 35% rule applies to the combined reading of glass plus film, and factory privacy glass alone often meters at 15–25%. We'll meter your glass before quoting so you know exactly where you stand.

Will I actually get pulled over for illegal tint?

It happens regularly in the KC metro, and courts have upheld tint violations as valid grounds for a stop in Kansas. Front windows get the most enforcement attention in both states. A tint ticket can mean a fine, a removal order, and in Missouri a failed vehicle inspection.

What tint should I get if I drive in both states every day?

35% VLT or lighter on every window keeps you legal on both sides of the state line. With KAVACA Ceramic IR or Ultimate IR, you give up nothing in heat rejection to stay compliant.

How do police measure tint?

With a handheld VLT meter placed on the glass during a stop or inspection. It reads the combined transmission of glass and film — which is why film percentage alone doesn't tell the whole story.

Do tint laws apply to the vehicle or the driver?

The vehicle's state of registration. A Missouri-plated car with legal-in-MO dark rear glass doesn't become illegal by crossing into Kansas — but a Kansas-plated vehicle must meet Kansas rules everywhere.

This section is provided for general information and reflects K.S.A. 8-1749a and RSMo 307.173 as verified in July 2026. It is not legal advice. Laws and local enforcement can change — confirm current rules with the Kansas Highway Patrol or Missouri State Highway Patrol if you have a specific legal question.

Kansas & Missouri Window Tint Laws: The 2026 Guide