Montana Auto Insurance Requirements & Rates

Montana requires 25/50/20 minimum liability coverage — $25,000 per person, $50,000 per accident for bodily injury, and $20,000 for property damage. Average full coverage costs $140–$180/month, while minimum coverage runs $45–$65/month based on available industry data.

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Updated May 2026

State Requirements

Montana operates under a traditional tort (at-fault) system, meaning the driver who causes an accident is financially responsible for damages. The state requires all drivers to carry proof of insurance and will verify coverage electronically through the Motor Vehicle Division. Montana does not require personal injury protection or medical payments coverage, unlike no-fault states.

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25/50 ($25,000 per person, $50,000 per accident)
Bodily Injury Liability
Covers medical expenses, lost wages, and legal costs when you injure someone in an at-fault accident. Montana's minimum of $25,000 per person is well below typical medical costs from serious crashes on high-speed rural highways like US-93 or I-90. A single hospitalization for traumatic injuries can exceed $100,000, leaving you personally liable for the difference.
$20,000 per accident
Property Damage Liability
Pays for damage to another driver's vehicle or property when you're at fault. The $20,000 minimum may not cover total loss claims on newer trucks and SUVs, which dominate Montana roads and often exceed $40,000 in value. Collision with livestock on open-range highways can also create multi-vehicle property damage exceeding state minimums.
Must be offered; can be rejected in writing
Uninsured/Underinsured Motorist Coverage
Protects you when hit by a driver with no insurance or insufficient coverage to pay your damages. Montana insurers must offer UM/UIM at the same limits as your liability coverage, but you can decline it in writing. With approximately 8% of Montana drivers uninsured and many rural areas lacking robust emergency response, rejecting this coverage creates significant financial risk.
Not required
Medical Payments Coverage
Pays medical expenses for you and your passengers regardless of fault, up to policy limits. While optional in Montana, it fills a critical gap given the state's lack of mandatory PIP and the reality that rural crash victims may face long ambulance transport times and limited nearby trauma centers.
State-Mandated Minimum Coverage · Montana

Montana Minimum Coverage

CoverageMinimum
Bodily Injury (per person)$25,000
Bodily Injury (per accident)$50,000
Property Damage$20,000

License Reinstatement Fee$100

Meeting the state minimum keeps you legal. See whether it's enough — get your Montana quote.

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Cost Overview

Montana rates reflect the state's rural geography, severe winter weather, and high wildlife collision frequency. Drivers in cities like Billings and Missoula pay less than those in remote areas where claims severity increases due to limited emergency services and long transport distances. The state's relatively low population density keeps average rates below the national median.

What Affects Your Rate

  • Wildlife collision frequency in Montana is among the highest nationally, with over 2,000 reported deer and elk crashes annually, making comprehensive coverage particularly valuable for rural drivers.
  • Winter weather severity impacts rates statewide, with mountain passes like Homestake and MacDonald experiencing prolonged closures and ice-related crashes that drive up collision claim costs.
  • Billings drivers pay approximately 15–20% less than residents in remote counties due to shorter emergency response times and greater insurer competition in urban markets.
  • Vehicle type significantly affects premiums, with full-size pickups and SUVs — which account for over 60% of Montana registrations — costing $25–$40 more monthly to insure than sedans.
  • Credit-based insurance scores influence Montana rates, with drivers in the lowest tier paying 40–60% more than those with excellent credit, as Montana law permits credit consideration in underwriting.
  • Drivers with a DUI conviction face average rate increases of 80–120% for at least three years, and many must file SR-22 certificates to reinstate driving privileges.
Minimum Coverage
$45–$65/mo
Meets Montana's 25/50/20 liability requirement only. Provides no coverage for your own vehicle damage or medical expenses, and leaves you financially exposed in serious accidents.
Standard Coverage
$90–$125/mo
Includes 100/300/100 liability limits, uninsured motorist protection, and medical payments coverage. Does not include collision or comprehensive for your vehicle.
Full Coverage
$140–$180/mo
Comprehensive liability limits plus collision and comprehensive with $500–$1,000 deductibles. Covers vehicle damage from crashes, weather, theft, and Montana's frequent deer and elk collisions.

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