Get Your Montana Medical Window Tint Exemption Online

Montana: Everything You Need to Know

• Montana Window Tint Exemption Laws

  Under Montana Code Annotated § 61-9-428, the Montana Highway Patrol or your local law enforcement agency may grant a written waiver allowing window tint darker than the standard limits in MCA 61-9-405(4). You must first obtain a signed affidavit from a licensed physician, physician assistant, or advanced practice registered nurse stating your medical condition and why darker tint is necessary. Bring the affidavit to MHP or local law enforcement; if approved, the written waiver must include your vehicle VIN, registration number, effective dates, and the officer's signature — and must be kept in the vehicle at all times. Compare all state medical tint exemptions.

  • The exemption allows window tint darker than the standard 24% VLT on front side windows and 14% VLT on rear windows.

  • Waivers can be granted by either the Montana Highway Patrol or any local law enforcement agency.

  • A signed affidavit from a licensed physician, licensed physician assistant, or advanced practice registered nurse is required.

  • The waiver must be in writing and include: vehicle identification number (VIN), registration number or clear vehicle description, date issued, owner's name, reason for granting the waiver, effective dates, and signature of the law enforcement officer.

  • Waivers are vehicle-specific and are non-transferable.

  • The Highway Patrol or local agency keeps a copy of the waiver until it expires.

  • Montana does not provide a standard state form, the affidavit format is determined by your healthcare provider.

  • Violations of window tint laws without an exemption are a misdemeanor, punishable by up to $500 fine and/or up to 6 months in county jail.

  Learn more about Montana window tint laws by state.

• Documents You'll Need

  To apply for a medical window tint waiver in Montana, you'll need:

  • Signed affidavit from a qualified healthcare provider stating the medical necessity for window tinting

  • Vehicle information: VIN, registration number, year, make, model, and registered owner

  The Affidavit must be signed by one of the following:

  • Licensed physician (MD or DO)

  • Licensed physician assistant (PA)

  • Advanced practice registered nurse (APRN)

  If applying through a telehealth service like TintedMD, you can get your evaluation done completely online. You'll receive:

  • A signed medical affidavit on official letterhead, ready to present to law enforcement

  If you need a waiver for additional vehicles:

  • Each vehicle requires its own waiver – submit separate requests for each vehicle you need exempted

  Where to Submit:

  Bring your signed affidavit to your nearest Montana Highway Patrol office or local law enforcement agency (sheriff's office or police department). They will review your documentation and, if approved, issue a written waiver.

  Note:

  Once approved, the waiver must be kept in your vehicle at all times. The law enforcement agency keeps a copy on file until the waiver expires.

• Legal Tint Limits

  Montana law sets specific limits on how dark your vehicle windows can be tinted. With an approved medical waiver, you can legally install tint darker than standard limits, protecting both your health and your compliance with Montana law.

  Standard Montana Tint Limits (Without Exemption):

  • Windshield: Non-reflective tint permitted only above the manufacturer's AS-1 line.

  • Front Side Windows: Must allow more than 24% of visible light (24% VLT). Anything darker is illegal without an exemption.

  • Back Side Windows: Must allow more than 14% of visible light (14% VLT).

  • Rear Window: Must allow more than 14% of visible light (14% VLT).

  • Reflectivity: No more than 35% reflective on any window.

  • Prohibited colors: Red, yellow, and amber tints are not permitted.

  • Multipurpose vehicles (SUVs, vans) with factory-installed tint are exempt from rear window limits, but aftermarket tint must comply.

  With a Medical Exemption:

  • Front Side Windows: May be tinted darker than 24% VLT as specified in your waiver.

  • Back Side Windows: May be tinted darker than 14% VLT as specified in your waiver.

  • Rear Window: May be tinted darker than 14% VLT as specified in your waiver.

  • Windshield: Exemptions may allow additional tinting, subject to law enforcement approval.

  • Reflectivity limit of 35% still applies.

  • Prohibited colors (red, yellow, amber) still apply.