Key Takeaways

  • Montana requires minimum liability coverage of 25/50/20 (bodily injury per person/per accident/property damage)
  • Montana is a tort (at-fault) state where the at-fault driver is responsible for damages
  • Uninsured motorist (UM) and underinsured motorist (UIM) coverage must be offered but can be rejected in writing
  • All Montana drivers must carry proof of insurance and present it to law enforcement upon request
  • Montana uses the SR-22 financial responsibility filing for high-risk drivers
Last updated: January 2026

Montana Auto Insurance Requirements

Montana requires all registered vehicles to maintain liability insurance coverage. Understanding the state's minimum requirements, tort system, and coverage options is essential for Montana P&C producers.

Minimum Liability Coverage: 25/50/20

Montana's minimum auto liability requirements are often expressed as 25/50/20:

CoverageMinimum LimitDescription
Bodily Injury Per Person$25,000Maximum for one injured person
Bodily Injury Per Accident$50,000Maximum for all injuries in one accident
Property Damage$20,000Maximum for property damage per accident

Understanding Split Limits

The 25/50/20 format means:

  • First number (25): $25,000 maximum for any one person's bodily injuries
  • Second number (50): $50,000 maximum total for all bodily injuries per accident
  • Third number (20): $20,000 maximum for property damage per accident

Exam Tip: Montana's minimums are 25/50/20. Memorize this - it will be on the exam. Compare to neighboring states: Wyoming (25/50/20), Idaho (25/50/15), North Dakota (25/50/25).

Example Scenario

Accident with 3 injured people and $15,000 property damage:

Injured PartyMedical BillsPolicy PaysReason
Person A$30,000$25,000Per-person limit
Person B$20,000$20,000Within per-person limit
Person C$10,000$5,000Per-accident limit reached
Property$15,000$15,000Within property limit
Total$75,000$65,000

Analysis: The policy pays $50,000 for bodily injury (the per-accident maximum) and $15,000 for property damage. The at-fault driver is personally responsible for the remaining $10,000.

Montana Tort System

Montana follows a tort (fault-based) system for auto accidents:

How the Tort System Works

AspectDescription
Fault DeterminationAt-fault driver responsible for damages
Claim ProcessInjured party claims against at-fault driver's insurance
LawsuitsInjured party may sue at-fault driver
Comparative FaultDamages reduced by claimant's percentage of fault

Montana Comparative Negligence

Montana uses a modified comparative fault system:

  • Injured party can recover if they are less than 51% at fault
  • Recovery is reduced by percentage of fault
  • If 51% or more at fault, recovery is barred entirely

Example: If you are 30% at fault for an accident and your damages are $10,000, you can recover $7,000 (70% of damages).

Uninsured and Underinsured Motorist Coverage

UM/UIM Requirements

Montana law requires insurers to offer UM and UIM coverage:

CoverageDescriptionRequired?
Uninsured Motorist (UM)Covers injuries from uninsured driversMust be offered
Underinsured Motorist (UIM)Covers injuries from underinsured driversMust be offered
RejectionInsured may reject in writingAllowed
LimitsEqual to liability limits unless reducedStandard

UM Coverage Triggers

UM coverage applies when:

  • At-fault driver has no liability insurance
  • Hit-and-run driver (phantom vehicle)
  • At-fault driver's insurer is insolvent
  • At-fault vehicle is stolen

UIM Coverage Triggers

UIM coverage applies when:

  • At-fault driver has insurance but limits are insufficient
  • At-fault driver's coverage exhausted
  • Damages exceed at-fault driver's limits

Exam Tip: Montana requires insurers to OFFER UM/UIM coverage, but policyholders can reject it in writing. If no written rejection, coverage applies at liability limits.

Proof of Insurance

Montana Requirements

RequirementDetails
Insurance CardMust carry in vehicle
Electronic ProofSmartphone display accepted
Present to PoliceMust show upon request
Registry VerificationOfficers can verify electronically

Montana Insurance Verification System

Montana participates in online insurance verification:

  • Real-time database of insured vehicles
  • Law enforcement can verify coverage instantly
  • Helps identify uninsured vehicles

Penalties for No Insurance

First Offense

PenaltyAmount/Action
FineUp to $250
Vehicle ImpoundPossible
License SuspensionPossible
SR-22 RequiredFor reinstatement

Subsequent Offenses

PenaltyAmount/Action
FineUp to $500
License SuspensionUp to 90 days
Vehicle ImpoundLikely
SR-22 Required3 years

SR-22 Requirements

The SR-22 is a certificate of financial responsibility:

AspectDetails
PurposeProve continuous insurance coverage
FilingInsurer files with Montana Motor Vehicle Division
DurationTypically 3 years
CostHigher premiums for high-risk status
CancellationInsurer must notify MVD if policy lapses

Optional Coverages

Personal Auto Policy Coverages

CoverageDescriptionMontana Notes
CollisionDamage from collision with objectOptional, covers your vehicle
ComprehensiveNon-collision damage (theft, weather)Optional, covers your vehicle
Medical PaymentsMedical expenses for occupantsOptional, no-fault coverage
Rental ReimbursementRental car while vehicle repairedOptional
Towing/LaborRoadside assistanceOptional

Medical Payments Coverage

Montana does not require Personal Injury Protection (PIP), but medical payments coverage is available:

  • Pays medical expenses regardless of fault
  • Covers driver and passengers
  • Typically $1,000 - $100,000 limits
  • No deductible usually applies

Collision and Comprehensive

Collision covers:

  • Collision with another vehicle
  • Collision with objects (trees, poles, buildings)
  • Overturn or rollover
  • Subject to deductible

Comprehensive covers:

  • Theft
  • Vandalism
  • Fire
  • Weather damage (hail, flood)
  • Animal collisions (deer strikes common in Montana)
  • Subject to deductible

Exam Tip: Montana has high rates of deer-vehicle collisions. Comprehensive coverage covers animal strikes, while collision typically covers hitting a stationary object.

Montana-Specific Auto Considerations

Rural Driving Challenges

FactorInsurance Impact
Long DistancesHigher mileage, more exposure
WildlifeDeer, elk, moose collisions
WeatherIce, snow, limited visibility
Road ConditionsGravel roads, construction
Response TimeRemote locations, delayed assistance

Winter Driving Coverage

Montana's winters create specific coverage needs:

Winter HazardCoverage Consideration
Ice/Snow AccidentsCollision coverage
Salt/Sand DamageMay be maintenance
Frozen Fuel LinesMechanical breakdown
Stranded VehicleTowing/roadside assistance

Agricultural Vehicle Coverage

Montana's agricultural economy includes special vehicle types:

Vehicle TypeCoverage Notes
Farm TrucksMay need commercial auto
ATVs/UTVsMay require separate policy
Tractors on RoadsLiability exposure
TrailersMay need separate coverage
Test Your Knowledge

What are Montana's minimum auto liability insurance limits?

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Test Your Knowledge

Under Montana's modified comparative fault system, a driver who is 55% at fault for an accident:

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Test Your Knowledge

Is uninsured motorist (UM) coverage mandatory in Montana?

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