Quick answer
A medical window tint exemption lets a driver with a qualifying, light-sensitive medical condition use darker window tint than their state normally allows. It usually starts with a physician's evaluation and a signed certificate or statement. Who qualifies, how dark you can go, and what paperwork you need all depend on your state.
Key takeaways
- Every state limits how dark window tint can be. The limits are written as VLT (visible light transmission).
- Most states, though not all, offer a medical exemption for drivers whose condition makes sun exposure harmful or painful.
- The exemption is based on a physician's evaluation of your condition, not on preference or looks.
- Some states only need a signed physician certificate kept in the vehicle. Others require an application to the DMV or state police.
- Keep your documents in the car, and check if and when your exemption needs to be renewed.
What is a medical window tint exemption?
Every state regulates aftermarket window tint. The limits are written as a VLT percentage: the share of visible light that passes through the glass. A 35% VLT limit means the window has to let at least 35% of visible light through. The lower the number, the darker the tint. Our guide to tint percentages explains how this works.
A medical exemption is a legal exception to those limits for a driver (and in some states, a regular passenger) whose medical condition makes sun exposure harmful. With a valid exemption, you can use darker tint than the standard limit, within whatever limits your state sets for exempt vehicles.
It isn't a loophole. Exemptions exist because, for some people, sunlight through a car window can trigger rashes, burns, disease flares, migraines, or eye pain.
Who may qualify?
Eligibility depends on two things: your medical situation and your state's rules. Most states offer a medical exemption, but a handful don't. Where one exists, exemptions are meant for people with a documented condition that makes them unusually sensitive to sunlight or bright light. Commonly cited examples include:
- Lupus and other photosensitive autoimmune conditions
- Porphyrias, such as erythropoietic protoporphyria (EPP)
- Xeroderma pigmentosum (XP)
- Albinism
- Solar urticaria and other sun allergies
- A history of skin cancer
- Eye conditions or migraines that cause severe light sensitivity (photophobia)
Having one of these conditions doesn't guarantee approval, and conditions that aren't listed here may still qualify. A physician has to evaluate your specific situation, and some states name the conditions they accept. See medical conditions that may qualify for more detail.
How the process works
The details vary by state, but most exemptions follow the same basic path:
- 1Medical evaluation. A licensed physician reviews your history and condition.
- 2Documentation. If you qualify, the physician signs a certificate or statement describing your medical need.
- 3State paperwork, if required. Some states want the physician's statement submitted with an application. Others only require you to carry it.
- 4Tint installation. A tint shop installs film within the limits allowed for exempt vehicles.
- 5Keep it with you. Store the documents in the vehicle and renew when required.
With ShadedMD, the first two steps happen online. You answer a medical questionnaire, a physician licensed in your state reviews it, and if you're approved, your certificate is emailed to you. See how it works, or read our step-by-step guide to getting an exemption online.
ShadedMD is the simplest and most affordable way to get evaluated. There's no office visit, no waiting room, and no time off work: the questionnaire takes about 5 minutes, and physicians aim to finish reviews within 24 to 48 hours. The fee is one flat $129, the best pricing of any online tint exemption service, with a 30-day money-back guarantee. An in-person specialist visit can cost more than the entire evaluation before you count travel and time off.
What an exemption may not cover
- The windshield. Windshields are the most restricted glass on the car. Many states only allow tint on a strip at the top, often down to the AS-1 line marked on the glass. Whether an exemption changes that depends on the state.
- Reflective film. Many states limit how mirror-like a film can be, separately from how dark it is. An exemption for darkness may not cover highly reflective film.
- Other vehicles. Depending on the state, an exemption is tied to a person, a vehicle, or both. If you sell your car or drive a different one, check whether your exemption carries over.
How long does an exemption last?
It depends on the state. Some exemptions have to be renewed on a set schedule, and some end when the vehicle is sold. ShadedMD certificates are valid for one year from the date they're issued. The expiration date is printed on the certificate, so you know when to renew.
What to keep in your car
- Your signed certificate, printed
- Any state form, permit, or sticker, if your state issues one
- Your tint installer's receipt showing the film's VLT (helpful, though not always required)
If you're stopped, stay calm, tell the officer you have a medical exemption, and show the certificate along with your license and registration. Our guide to traffic stops, inspections, and travel covers this in detail.
Next steps
Start with your state's page to see what applies where you live. Then check whether you qualify. The questionnaire takes about 5 minutes.
Frequently asked questions
Is a medical tint exemption legal?
Yes, in states that offer one. Where they exist, medical exemptions are created by state law or regulation. They're an official exception to the standard tint limits for drivers with qualifying conditions, as long as you follow your state's requirements.
Can I get a tint exemption without seeing a doctor in person?
Often, yes. Many states require a physician's signed statement but don't say the evaluation has to happen in person. What matters is that a qualified physician evaluates your condition and signs the documentation your state requires. Check whether your state has its own form or process.
How dark can I tint with a medical exemption?
It depends on your state. Some states set a specific darker limit for exempt vehicles, and others tie it to what the physician specifies. Your certificate and your state's rules determine what applies to you.
Does a tint exemption cover all my cars?
Not always. Depending on the state, an exemption may apply to a specific vehicle, to you as a driver, or both. Check your state's rules before tinting a second vehicle.
Sources
- Lupus Foundation of America, UV Exposure: What You Need to Know
- American Porphyria Foundation, Erythropoietic Protoporphyria (EPP) and X-Linked Protoporphyria (XLP)
- MedlinePlus Genetics, National Library of Medicine, Xeroderma pigmentosum
- American Migraine Foundation, Photophobia (Light Sensitivity) and Migraine
- Texas Department of Public Safety, Window Tinting Standards
- Florida Legislature, Florida Statutes section 316.29545, Window sunscreening exclusions; medical exemption; certain windows
This article is general information, not medical or legal advice. Tint laws change and differ by state, so check your state's current rules. Whether you qualify for an exemption is decided by a licensed physician based on your individual condition.
About ShadedMD
Medical tint exemptions you can trust
ShadedMD is an online medical window tint exemption service. Every questionnaire is reviewed by a physician licensed in your state, who approves or denies it based on medical need. ShadedMD offers the best pricing of any online tint exemption service: one flat fee of $129 with no add-ons, backed by a 30-day money-back guarantee. Physicians aim to complete reviews within 24 to 48 hours, and approved patients receive a signed certificate by email that they can download, print, and keep for one year.