Idaho window tint laws
Middle of the national pack for front-side tint (17 of 51 jurisdictions are stricter).
The legal limits
Will your film pass in Idaho?
A trooper's meter reads the film and the glass. Factory glass runs about 78% VLT, so net VLT = film × glass — which is why "35% film" can fail a 35% state. Common shades over factory glass:
| Film | Meters at | Front side | Back side | Rear |
|---|---|---|---|---|
| 70% | 54.6% VLT | Pass | Pass | Pass |
| 50% | 39.0% VLT | Pass | Pass | Pass |
| 35% | 27.3% VLT | Fail | Pass | Fail |
| 20% | 15.6% VLT | Fail | Fail | Fail |
| 5% | 3.9% VLT | Fail | Fail | Fail |
Different glass or an odd shade? Run the exact numbers in the tint-law tool — it also emails you if Idaho's law changes.
Across the state line
Shops near a border tint cars registered in both states. Idaho front side: 35% VLT min — the neighbors:
Idaho tint law FAQs
What is the darkest legal tint in Idaho?
Front side windows must let through at least 35% of light, back side 20%, and the rear window 35%. Anything darker fails a meter check.
Is 20% tint legal in Idaho?
A 20% film over factory glass meters about 15.6% VLT. That fails Idaho's 35% front-side rule and it also fails the back-side limit (20% vlt min).
Does Idaho allow medical exemptions for darker tint?
Yes — Idaho allows darker film with a qualifying medical exemption. Keep the exemption paperwork in the vehicle.
Is reflective or mirrored tint legal in Idaho?
Idaho permits some reflectivity within state limits — check the current administrative code for the exact percentage before installing mirrored film.
What is the windshield tint rule in Idaho?
Idaho allows windshield tint only at the top of the glass: Top AS1 line. Full-windshield film (outside a medical exemption) fails inspection.
Reviewed against state DOT/DPS regulations as of 2025. States amend tint law — verify with the Idaho authority before installing. This is reference material, not legal advice.
Run a tint shop in Idaho?
Wraptor quotes tint, wrap, and PPF jobs with the legal limits built in — plus scheduling, deposits, and a CRM that remembers every VIN.