New Hampshire Window Tint Laws (2026): Legal VLT Limits
New Hampshire Window Tint Laws (2026): Legal VLT Limits
In New Hampshire, front side windows must allow at least 70% of visible light through (VLT). Back side and rear windows may be tinted to 35% VLT or more. Aftermarket windshield tinting is prohibited except for a non-reflective strip across the top 6 inches.
What is the legal tint limit in New Hampshire?
New Hampshire sets one of the strictest front side window limits in the country. Your front side windows must let through at least 70% of visible light. In practical terms, that means almost no aftermarket darkening is permitted on the driver and front passenger windows. A higher VLT percentage means lighter (less dark) tint; a lower VLT percentage means darker tint. At 70%, only a barely perceptible film is allowed.
The back side windows and rear window are treated more generously. Both must meet a minimum of 35% VLT, which is a moderately dark tint that still allows a reasonable amount of light through. When the rear window is tinted, the law requires dual outside mirrors so the driver retains an adequate rear view.
| Window | Minimum VLT | Notes |
|---|---|---|
| Front side windows | 70% | Nearly clear; very light film only |
| Back side windows | 35% | Moderately dark permitted |
| Rear window | 35% | Dual outside mirrors required if tinted |
| Windshield | See below | Top 6-inch strip only, 35%+ |
There is no sedan-versus-SUV or multipurpose-vehicle distinction in New Hampshire's statute for the side and rear windows. The same limits apply regardless of vehicle type.
Windshield tint rules in New Hampshire
Aftermarket tinting on the main windshield is entirely prohibited in New Hampshire. You may not apply a film below the top 6-inch strip. The top 6-inch strip at the very top of the windshield may carry an aftermarket film, but that strip must still allow at least 35% VLT through. This means even the permissible top strip cannot be heavily darkened.
Reflective and mirrored tint is banned on all windows, including the windshield area. No specific tint color restrictions are named in the statute, but reflective metallic films that cause glare would be prohibited under the reflectivity rule.
The purpose of the windshield restrictions is to preserve the driver's full field of vision while moving. A film that scatters or blocks light would impair the driver's ability to react to other vehicles, pedestrians, and road hazards.
Medical exemptions
New Hampshire does provide a medical exemption for front side window tinting under RSA 266:61-a. Drivers who have a documented medical need for additional protection from sunlight or ultraviolet radiation may apply for a special permit that allows darker film on the front side windows than the standard 70% VLT rule permits.
To obtain the exemption, a physician must certify the medical need. The permit documentation should be kept in the vehicle and made available if you are stopped by law enforcement. Without the permit, a vehicle with darker-than-legal front side tint can be cited regardless of a driver's personal medical situation.
If you believe you qualify for a medical exemption, speak with your physician and then contact the New Hampshire Division of Motor Vehicles to obtain the formal permit before having the tint installed.
How tint is measured and certified
Tint darkness in New Hampshire is measured using a light-transmission meter (sometimes called a tintmeter or VLT meter) that passes a beam of light through the window film combined with the glass to calculate the percentage of light transmitted. The device reads the combined VLT of film plus glass, not film alone, which matters because factory glass itself absorbs some light before any film is added.
No measurement tolerance is specified in RSA 266:58-a, which means a reading that falls below 70% on the front side windows or below 35% on the back and rear windows may result in a citation.
The statute does not require a compliance sticker or an installer certification label, though some reputable shops include them as a best practice. Keeping the installer's documentation noting the film's VLT rating is strongly recommended.
Penalties for illegal tint in New Hampshire
Violating New Hampshire's window tint law under RSA 266:58-a is a violation-level offense, which carries a fine. While this is not a criminal charge, fines can accumulate if corrections are not made and a follow-up stop occurs.
Officers may measure tint during any traffic stop or roadside inspection. If your windows are found to be out of compliance, you will typically receive a citation and be expected to have the non-compliant film removed. A second violation after failing to correct the tint can lead to an additional fine.
The relatively strict 70% front-window rule means that even a tint marketed as "light" may not comply. Factory-installed privacy glass on rear windows of many SUVs and vans is typically tested to verify it meets the 35% rear standard.
If you want to tint your windows in New Hampshire
If you want to tint your vehicle's windows in New Hampshire, the safest approach is to start with the factory glass VLT and plan accordingly.
First, confirm the VLT of your existing glass. Most factory front windshields and door glass transmits 70% to 75% VLT on its own, leaving little or no room for additional darkening on the front side windows under New Hampshire law. Second, focus any darkening on the back side windows and rear window, where 35% film is permissible and provides meaningful sun and UV reduction. Third, choose a licensed installer who uses a tintmeter to measure the combined VLT of film plus glass before finalizing the installation.
If you have a medical need, obtain the RSA 266:61-a permit before installation so law enforcement can verify your exemption on the spot. Keep the permit and any installer documentation in the vehicle at all times.
For the windshield, no aftermarket film below the top 6-inch strip is permitted. A UV-blocking clear windshield film (with 70%+ VLT) is not covered by tint law but may raise questions, so verify legality with your installer or the DMV before applying it.
This article is general legal information, not legal advice. Window tint limits vary by state and change, and enforcement depends on local practice and your specific vehicle. For a definitive answer, check your state DMV or consult a local attorney.
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Sources
- New Hampshire Revised Statutes, RSA 266:58-a (Window Tinting): https://www.gencourt.state.nh.us/rsa/html/xxi/266/266-58-a.htm
- New Hampshire Revised Statutes, RSA 266:61-a (Medical Exemption): https://www.gencourt.state.nh.us/rsa/html/xxi/266/266-61-a.htm
For the full picture of window tint rules in every state, see the Window Tint Laws hub. New Hampshire also regulates what you can mount on or affix to your windshield; see New Hampshire Windshield Mounting Restrictions for those rules.