New Hampshire Window Tint Laws: Complete Legal Guide
If you're thinking about tinting your car windows in New Hampshire, it's crucial to understand the state's specific regulations. Violating tint laws can result in fines, failed vehicle inspections, and even requirements to remove the tint. Knowing the rules upfront helps you make an informed decision and avoid costly mistakes.
Quick Reference Table
| Window | Legal VLT % | Notes |
|---|---|---|
| Front Windshield | 70% | Tint only below AS-1 line |
| Front Side Windows | 50% | Driver and passenger windows |
| Rear Side Windows | 50% | No restriction |
| Rear Window | 50% | No restriction |
Understanding VLT (Visible Light Transmission)
VLT, or Visible Light Transmission, is a measurement of how much light passes through your window tint. It's expressed as a percentage—the higher the percentage, the lighter the tint, and the more light comes through. For example, a 70% VLT tint allows 70% of sunlight to pass through the glass, while a 20% VLT tint is much darker and only lets 20% of light through.
Think of VLT like brightness settings on a dimmer switch. A 90% VLT tint is barely noticeable, while a 5% VLT is nearly opaque "limo tint." New Hampshire's laws specify minimum VLT percentages to ensure drivers maintain adequate visibility and law enforcement can see inside vehicles when necessary.
Front Windshield Rules
New Hampshire allows tinting on your front windshield, but only below the AS-1 line. The AS-1 line is the manufacturer's marked line that runs across the top of your windshield—typically where the sun visor would sit. Any tint applied above this line is illegal.
Below the AS-1 line, you can apply tint with a VLT of 70% or darker. This means the tint must allow at least 70% of visible light through, preventing overly dark windshield tints that would obstruct the driver's view. Many drivers opt for a modest windshield tint in this range for a small degree of heat rejection and UV protection while maintaining excellent visibility.
Side Window Rules
For your front side windows (driver and passenger windows), New Hampshire permits tint with a VLT of 50% or lighter. This is slightly darker than the windshield limit, giving you a bit more privacy and heat rejection while still maintaining good visibility for safe driving and easy identification by law enforcement officers.
The same 50% VLT rule applies to rear side windows, so you have flexibility to match the tint darkness across the rear of your vehicle. This allows for a consistent look while staying fully compliant with state law.
Rear Window Rules
The rear window can also be tinted to 50% VLT or lighter in New Hampshire. There are no special exemptions for vehicles with dual side mirrors or other exceptions—the 50% standard applies uniformly. This allows you to darken the rear window for privacy and heat reduction without worrying about equipment-based exceptions.
Restricted Colors
New Hampshire does not have restrictions on tint colors. Unlike some states that prohibit red, amber, or other colors, the Granite State focuses solely on VLT percentages. This means you can legally apply any color tint as long as it meets the VLT requirements. That said, blue or colored tints that significantly reduce visibility may raise eyebrows during an inspection, so neutral grays and bronzes remain the most popular choices.
Medical Exemptions
New Hampshire does not offer a formal medical exemption program for window tint. The state's tint laws apply uniformly to all drivers, regardless of medical conditions. If you have a medical reason for needing darker tint—such as extreme photosensitivity or certain skin conditions—you'll need to explore alternative solutions like sunshades, UV-blocking films that don't affect VLT, or special prescription sunglasses.
Before installing tint darker than legal limits for health reasons, consult with your physician and contact your local DMV to discuss any potential options. Documentation from a doctor may help if you receive a citation, though it doesn't guarantee an exemption under current law.
Penalties for Illegal Tint
If you're stopped by law enforcement and found to have tint darker than New Hampshire's legal limits, you can receive a non-criminal violation with a fine. The typical fine for illegal window tint is around $75 to $150, depending on the specific violation and the officer's discretion.
New Hampshire also conducts vehicle inspections, and illegal window tint is a common reason for inspection failure. You'll be required to remove or lighten the tint to pass inspection. Once corrected, you can return for a re-inspection at no additional cost in most cases.
If you receive a citation, it's typically treated as a fix-it ticket situation—meaning you have a set period (usually 10 days) to correct the violation and have it signed off by law enforcement or an inspection station. Keep documentation showing the tint was removed or corrected to present if requested.
Finding a Compliant Tint Shop
The easiest way to ensure your window tint is legal is to have it installed by a professional who knows New Hampshire's specific regulations. At TintingSource.com, you can find certified window tinting shops across New Hampshire that understand the state's VLT requirements and can ensure your installation stays compliant. Our directory makes it simple to compare local installers, read reviews, and book an appointment with someone who gets the laws right the first time.