New Hampshire window tint laws require front side windows to allow at least 70% VLT under New Hampshire RSA 266:58-a full statute text. Rear windows must allow at least 35% VLT. Windshield tint is generally unlawful except a strip on the top 6 inches at 35% VLT. A first offense fine generally runs near $62. This guide covers penalties, exceptions, and the medical waiver process.
What VLT Means
VLT stands for visible light transmittance. It measures the percentage of visible light passing through the film and glass together. A higher VLT percentage means a lighter and more see through tint. A lower percentage means a darker tint that blocks more light. New Hampshire sets minimum VLT percentages rather than maximum darkness levels, so the number in the law is the least amount of light that must pass through.
Front Side Window Rule
New Hampshire law generally requires front side windows, the windows to the left and right of the driver, to allow not less than 70% VLT. This is one of the stricter front window standards among the states. A film testing near 70% leaves little room for visible darkening beyond the factory glass. Drivers considering front window tint should confirm the combined reading meets this threshold before installation.
Rear Window Rule
Rear side windows and the rear window may generally be tinted to not less than 35% VLT. This allows noticeably darker film on rear windows than on the front side windows. Certain multipurpose vehicles and pickup trucks may follow the rear percentage federal standard 49 C.F.R. Section 571.205 permits for pre market glass. When rear windows are tinted, the vehicle generally must carry outside mirrors on both sides.
Windshield Tint Rule
New Hampshire law generally makes it unlawful to sell, inspect, or drive a vehicle registered in the state with aftermarket tint on the windshield. The one allowance is a non reflective strip at the very top, not wider than 6 inches, that allows not less than 35% VLT. This narrow exception covers the common sun strip many drivers already have rather than a full windshield tint application across the glass.
Reflective and Mirrored Tint
New Hampshire’s rules focus on light transmittance percentages rather than naming specific banned colors of tint film. Metallic or mirrored finishes that create glare generally fall outside what compliance officials accept during a stop or inspection. Anyone selecting tint film in New Hampshire should generally choose a straightforward non reflective finish rather than a metallic or mirror style product to avoid a separate compliance question at inspection time.
Who the Law Applies To
The tint rules generally apply to any motor vehicle registered or operated in New Hampshire, covering the person who installs aftermarket tint and the business that sells or inspects the vehicle. The law separately makes it unlawful to sell or inspect a vehicle with illegal windshield tint, placing responsibility on installers and inspection stations too. Officers may check tint compliance during a routine stop or the standard annual inspection.
Penalties for Illegal Tint
A person who violates the tint statute is generally guilty of a violation under New Hampshire law. Because the statute does not list a specific dollar fine, the state uniform fine schedule generally applies, setting a standard fine near $62 for a first offense. A subsequent offense within the same calendar year generally carries a higher fine near $124. Courts may still set a different amount.
Violation Classification
A violation in New Hampshire sits below a misdemeanor and is not classified as a crime under state law. This generally means an illegal tint citation carries no jail time and does not create a criminal record the way a misdemeanor charge would. A driver cited for non compliant tint typically must correct the film so the vehicle passes a later inspection. Repeated citations can still add real cost.
Medical Waiver Exception
New Hampshire allows a medical waiver process for drivers who need darker aftermarket windshield tint for a documented reason, described on New Hampshire tinted window medical waiver application details. The application generally must be dated within six months and include a copy of the registration, with up to two vehicles allowed per waiver. There is generally no fee, and an approved waiver stays valid for two years.
How the Waiver Renewal Works
Renewing an approved medical waiver generally requires a new signed application from a physician within six months of the renewal date, along with an updated copy of the registration. Applications can generally be faxed or mailed to the Department of Safety Division of Motor Vehicles Director’s Office in Concord. This process covers windshield tinting for a documented condition rather than routine front window darkening under the 70% VLT rule.
Vehicle Inspection and Tint
New Hampshire’s inspection requirements, described in New Hampshire administrative rule on tinted glass inspection, generally direct stations to reject a vehicle with aftermarket windshield or front window tint lacking a medical waiver, or rear tint reading below 35% VLT. Perforated window film and vehicle wraps are generally accepted at inspection if a clear interior to exterior view remains and the measured transmittance is not less than 35%.
Correcting an Outdated Belief
Several older tint guides still describe New Hampshire as banning aftermarket tint on front side windows. That description reflects the law before a 2021 amendment changed the standard. Under the current statute front side windows are generally allowed aftermarket tint as long as the film and glass combined transmit at least 70% VLT. Older sources may wrongly suggest front tint remains off limits when it has been allowed since 2021.
2026 Legislative Update
A 2026 bill would have lowered the front side window standard from 70% VLT to 35% VLT and expanded the medical exemption process, with a planned effective date of January 1, 2027. That bill received an Inexpedient to Legislate vote in the New Hampshire House on March 12, 2026, and did not advance. As a result the 70% VLT standard remains current law, and drivers should not assume 35% applies.
New Hampshire window tint laws carry real consequences for drivers whose film does not meet the state percentage requirements, from citations to a failed inspection that must be corrected. Because the front window standard has faced repeated legislative proposals in recent years, drivers should periodically confirm the current rule rather than relying on older guides. General background on how Lawwalls approaches informational content is on the Disclaimer page.
Disclaimer
This article is for general informational purposes only. It is not legal advice. Lawwalls publishes informational content only and does not provide legal services or legal advice.
For legal advice about your specific situation contact a licensed attorney in your state. Laws change and vary by jurisdiction. Verify current rules with official government sources or a qualified lawyer.