Liability insurance is the part of an auto policy that helps pay for injuries or property damage a driver causes to other people. It generally does not pay to repair the at-fault driver’s own vehicle or cover that driver’s injuries.
For households in Billings, MT, understanding liability coverage matters because a routine commute, winter road condition, parking-lot mistake, or collision on a busy arterial can create costs far beyond the damage visible at the scene.
What does auto liability insurance cover?
Auto liability coverage is designed for situations in which the policyholder is legally responsible for an accident. It usually includes two main parts:
- Bodily injury liability: Helps pay for injuries or death suffered by other people in a crash for which the insured driver is responsible.
- Property damage liability: Helps pay to repair or replace another person’s vehicle or other property damaged in the accident.
Liability coverage may also pay for legal defense costs when a covered claim or lawsuit is brought against the insured. The exact handling of legal expenses depends on the policy, including whether those expenses are paid in addition to the stated liability limits or reduce the available amount.
Liability insurance is different from collision, comprehensive, medical payments, and uninsured motorist coverage. Those coverages address different risks and may be subject to separate limits, deductibles, and exclusions.
What do Montana’s minimum liability limits mean?
Montana requires minimum liability limits of 25/50/20 for most privately owned vehicles:
- $25,000 for bodily injury or death to one person in one accident
- $50,000 for bodily injury or death to two or more people in one accident
- $20,000 for damage to another person’s property in one accident
These numbers are limits, not guaranteed payments. They represent the maximum the policy may pay for the covered category under the circumstances of the claim.
For example, if a driver causes a collision that injures one person, the bodily injury portion may pay up to $25,000 for that person. If two or more people are injured, the policy may pay up to $50,000 total for all injured people, subject to the policy terms and allocation of the available limit.
The $20,000 property damage limit applies to damage to another person’s vehicle, fence, building, utility structure, or other property. A newer vehicle, several damaged vehicles, or a collision involving public or commercial property could exceed that amount.
Why might state minimums be insufficient?
Minimum limits satisfy the legal requirement to drive, but they may not fully protect a household’s finances after a serious crash. Medical treatment, lost wages, rehabilitation, pain-related claims, and long-term care can quickly exceed $25,000.
Property damage can also rise quickly. A multiple-vehicle collision during icy conditions, for example, could involve several damaged vehicles, roadside equipment, guardrails, or other structures. If liability limits are exhausted, the person found responsible may remain personally liable for additional damages.
Higher liability limits are often evaluated based on factors such as:
- Household income and savings
- Home or other property ownership
- Number and age of drivers
- Typical driving distance
- Vehicle type and use
- Whether teenage or inexperienced drivers are included
- Presence of investments or other assets
An umbrella policy may provide additional liability protection above underlying auto and home insurance limits, but it has its own eligibility requirements, exclusions, and minimum underlying limits.
Does liability coverage pay for the policyholder’s own car?
Usually, no. Liability coverage is intended to pay for damage the insured driver causes to other people and their property.
Coverage for the insured vehicle generally comes from:
- Collision coverage: Damage caused by a crash with another vehicle or object, regardless of who caused the accident, subject to the deductible and policy terms.
- Comprehensive coverage: Damage from events other than a collision, such as theft, hail, falling objects, vandalism, or contact with an animal.
This distinction is especially relevant in an area where hail, wind, snow, and wildlife can create vehicle damage unrelated to another driver’s negligence.
If a driver causes a crash and has liability-only insurance, the policy may help pay the other party’s covered losses but not repairs to the driver’s own vehicle.
What is the difference between bodily injury and property damage limits?
Bodily injury limits apply to people. Property damage limits apply to physical property.
The two parts operate separately, so a claim involving both injuries and vehicle damage may draw from different portions of the policy. The declarations page typically displays these limits in a format such as 25/50/20 or 100/300/100.
The first number is the per-person bodily injury limit. The second is the total bodily injury limit per accident. The third is the property damage limit per accident.
A common misunderstanding is that “$100,000 in liability” means $100,000 is available to every injured person and for every type of damage. The actual structure depends on the three-part limit and the policy language.

Does liability insurance follow the car or the driver?
The answer depends on the policy and the circumstances. Auto policies commonly provide liability protection for the named insured and certain permissive drivers using a covered vehicle. However, coverage can be affected by exclusions, household relationships, vehicle ownership, regular use of another vehicle, business use, and whether the driver had permission.
A person who regularly drives a vehicle that is not listed on the policy should not assume occasional-use provisions will apply. The same concern can arise when a household member moves into the home, a student takes a vehicle away for school, or a vehicle is used for work-related activity.
Before lending a vehicle, the owner should understand that the owner’s policy may be involved if the borrower causes a collision. The borrower’s insurance, if available, may also affect how a claim is handled.
What does liability coverage not usually cover?
Liability insurance generally does not cover:
- Intentional damage or intentional injury
- Damage to the insured’s own vehicle
- Normal wear and mechanical breakdown
- Personal belongings inside a vehicle
- Injuries to the insured driver, unless another coverage applies
- Certain business, delivery, racing, or commercial uses
- Claims involving excluded drivers or vehicles
Policies can contain additional exclusions and conditions. A vehicle used for commuting may be covered differently from one used to transport paying passengers, make deliveries, or perform business tasks.
How should Billings residents review their liability limits?
Start with the declarations page rather than the premium amount. Confirm the bodily injury and property damage limits for every vehicle, then consider whether the limits reflect the household’s financial exposure.
It is also useful to review coverage after major changes, including:
- Buying or selling a vehicle
- Adding a young driver
- Moving to a new residence
- Changing jobs or commute length
- Beginning regular rideshare, delivery, or business use
- Buying a home or acquiring significant assets
- Allowing another household member to drive regularly
Keep proof of insurance available in the vehicle and understand the reporting instructions in the policy. After a collision, exchange required information, seek medical attention for injuries, document the scene when safe, and report the incident according to the policy’s conditions.
Liability coverage is fundamentally protection against the financial consequences of harming someone else or damaging their property. The required minimum is a starting point, but the appropriate limit depends on the people, vehicles, driving patterns, and assets connected to the policy.