PA Window Tint Exemption: Who Qualifies and How to Apply

To get a Pennsylvania window tint exemption, you file PennDOT Form MV-402 with a certification from a licensed physician or optometrist confirming that you or a household member has a medical condition that justifies darker glass. Approval is tied to one specific vehicle by VIN, the film must be colorless, and you have to wait for the certificate in the mail before any aftermarket tint goes on the car.

Why the Exemption Exists

Pennsylvania sets a strict limit on how dark aftermarket window film can be. Under 75 Pa. C.S. § 4524, a vehicle’s windshield, side wings, and side windows cannot be covered with sun screening material that prevents someone from seeing inside. The equipment regulations put a number on that: passenger car side windows must allow at least 70% visible light transmittance, so film can block no more than 30% of incoming light. Factory tint that meets the manufacturer’s original specification is allowed automatically, and hearses, ambulances, and government vehicles are exempt from the limit.¹ Everyone else needs either compliant film or an approved medical exemption.

Who Qualifies

The exemption is available for physical conditions that make normal sun exposure through vehicle glass harmful or painful. The statute requires that the condition be one PennDOT has recognized, in consultation with its Medical Advisory Board, as justifying darker windows.¹ Conditions that commonly qualify include:

Lupus, where ultraviolet exposure can trigger painful skin flare-ups and worsen systemic symptoms.
Albinism, where reduced melanin makes skin and eyes extremely sensitive to light.
Porphyria, where sunlight can cause severe blistering and tissue damage.
Photosensitive eye conditions diagnosed by an optometrist, including certain forms of keratitis or retinal disorders.

You do not have to be the person with the condition. Anyone residing in the vehicle owner’s household who regularly drives or rides in the car can be the person whose medical condition supports the exemption.¹ If your spouse or child qualifies, you can apply for the vehicle they travel in even when it’s registered in your name.

How to Apply

The application is PennDOT Form MV-402, the Sun Screening Exemption Application. Download it from PennDOT’s forms page or pick one up at a driver’s license center. The form asks for three things:

Your personal details: full legal name, address, and driver’s license number, which PennDOT uses to match the exemption to your driver record.
Vehicle information: the make, year, model, and VIN of the specific car being modified.²
Medical certification: a licensed physician or optometrist must certify the medical need and sign the form.¹

Mail the completed form to PennDOT’s Bureau of Motor Vehicles in Harrisburg. There is no application fee for the exemption. PennDOT verifies the medical professional’s credentials and the stated condition, and the review typically takes several weeks. If approved, an official certificate of exemption arrives in the mail.

Do not install aftermarket tint before that certificate is in your hands. A pending application is not a legal defense during a traffic stop, so darker film added early can still draw a citation.

The Colorless Film Rule

Pennsylvania’s equipment regulations state that an exemption shall be granted only for a colorless sun screening device or material.² Colored or mirrored film does not qualify, even with an approved certificate. The film must be a neutral, clear-type material that cuts light transmittance without adding tone. Ask any tint shop you use to confirm the specific film they plan to install is compliant. Getting this wrong means paying for installation, then paying again for removal.

Driving with the Certificate

Once the certificate arrives, keep it in the vehicle at all times and produce it on request during a traffic stop.¹ The glove compartment is the practical place for it. Without the paper in the car, an officer has nothing to distinguish your legal tint from an illegal install, and a citation is still on the table.

You also have to present the certificate at your annual state safety inspection.² The inspector needs a way to verify that windows measuring below the 70% threshold are legal, and without the certificate the vehicle can fail inspection.

The exemption itself has no set expiration date. It stays valid as long as the qualifying condition persists and you still own the vehicle. Because the certificate is tied to one VIN, buying a new car means starting the application over for the replacement.

Selling or Transferring an Exempt Vehicle

Pennsylvania’s rules on selling an exempt vehicle catch a lot of owners off guard. If you transfer the car to someone who does not independently qualify for a medical exemption, the exemption is void and, as the seller, you have three obligations:¹

Remove every piece of sun screening material from the vehicle before the sale.
Physically destroy the original exemption certificate, not just hand it over or discard it.
Give the buyer a notarized statement listing your name, address, the VIN, year, and model of the vehicle, along with the business and process used to remove the tint.

Professional removal typically runs between $50 and $150. Shops soften the adhesive with steamers or heat guns, peel the film, and clean residual glue from the glass. Rear windows with built-in defroster lines take extra care so the heating elements aren’t damaged. If a sale is on your horizon, build this cost and the notarization step into your timeline.

Driving to Another State

A Pennsylvania exemption is a state-issued document, and no federal law requires other states to honor it. Cross into New Jersey, Ohio, or anywhere else and you’re subject to that state’s tint laws. Some officers may accept the Pennsylvania certificate as an explanation and issue a warning, but they aren’t required to. If you travel frequently to a neighboring state, check whether that state issues its own medical exemption or whether its baseline limit is lenient enough to accommodate your film. Keeping the Pennsylvania certificate visible in the vehicle along with a copy of the physician’s or optometrist’s certification at least shows good faith.

Taxes, HSA, FSA, and Insurance

Medical window film installed under a physician’s order may qualify as a deductible medical expense. IRS Publication 502 defines deductible medical expenses as costs for diagnosis, treatment, or prevention of disease, including equipment and supplies needed for those purposes.³ To claim the deduction, total medical expenses for the year must exceed 7.5% of your adjusted gross income and you must itemize on Schedule A. If you have a Health Savings Account or Flexible Spending Account, medical-grade window tint is generally an eligible expense when a physician or optometrist provides a note confirming the tint is primarily for medical care. Keep the prescription and the installer’s receipt with your tax records.

Tell your auto insurer about the modification when the film goes on. Most standard policies do not automatically cover damage to aftermarket parts, and if tinted windows are cracked or shattered, your insurer may pay for base glass replacement but exclude the re-tinting cost unless you carry custom parts and equipment coverage. Failing to disclose the modification up front can lead to a denied claim later. And if the tint turns out to be illegal at the time of a loss because the exemption lapsed or was never issued, an insurer may refuse to pay for damage to those windows at all. Keeping the certificate current and in the vehicle protects you on both the legal and insurance sides.

1
Pennsylvania General Assembly. Pennsylvania Code 75 Section 4524 – Windshield Obstructions and Wipers
2
Pennsylvania Department of Transportation. Vehicle Equipment and Inspection Regulations – Subchapter O – Vehicle Sun Screening Devices
3
Internal Revenue Service. Medical and Dental Expenses