MT
Montana Window Tint Laws (2026)
In Montana, front side windows must let in at least 24% of light; back side windows 14% VLT or lighter and the rear window 14% VLT or lighter. Windshield: above the AS-1 line only, not red, yellow or amber.
Reviewed September 14, 2026 against the sources listed below.
Sedans
| Windshield | Above the AS-1 line only, not red, yellow or amber |
|---|---|
| Front side windows | 24% vlt or lighter |
| Back side windows | 14% vlt or lighter |
| Rear window | 14% vlt or lighter |
SUVs, trucks and vans
| Windshield | Above the AS-1 line only, not red, yellow or amber |
|---|---|
| Front side windows | 24% vlt or lighter |
| Back side windows | Any darkness |
| Rear window | Any darkness |
Other rules
- Reflectivity, front side
- 35% max
- Reflectivity, back side
- 35% max
- Banned colors
- Red, Yellow, and Amber
- Medical exemption
- No
- Certification sticker
- Not required
- Side mirrors if the rear is tinted
- No extra requirement
- Penalty
- Fine set by the court under Title 61.
- Notes
- The statute has no medical exemption; the department's waiver covers only vehicles tinted before October 1991. Multipurpose vehicles, vans and buses are unrestricted behind the front seat.
Window tint shops in Montana
No window tint shops listed in Montana yet. Browse detailers in Montana.
Questions
What is the darkest legal tint in Montana?
24% on front side windows, 14% on back side windows and 14% on the rear window, for sedans.
Is 20% tint legal in Montana?
Only on back side windows and the rear window. Front side windows need 24% or lighter.
Is 35% tint legal in Montana?
Yes, 35% tint is legal on every window in Montana.
Does Montana allow a medical exemption for window tint?
No. Montana has no medical exemption for darker tint.