Multi-Car Liability Requirements in Montana
Montana requires every vehicle on a multi-car policy to carry at least $25,000 bodily injury per person, $50,000 bodily injury per accident, and $20,000 property damage—the same minimums that apply to single-vehicle policies. Montana is a fault state, meaning the at-fault driver's liability coverage pays for the other party's damages after an accident. The multi-car discount applies when you put two or more vehicles on one policy at the same garaging address, and each vehicle can carry different coverage levels above the liability floor.
Meeting the state minimum keeps you legal. See whether it's enough — get your Montana quote.
Get your Montana quoteWhat Shapes Multi-Car Costs in Montana
Multi-car cost in Montana depends on the vehicles you insure, the drivers on the policy, the coverage level you select per vehicle, and the multi-car discount each carrier applies. Adding a vehicle mid-term re-rates the entire policy rather than adding a flat amount, and combining two household policies after a marriage or move typically earns the discount immediately.
What Affects Your Rate
- Montana's 25/50/20 liability minimum is the floor each vehicle on a multi-car policy must carry, and raising limits on one vehicle does not change the minimums on the others.
- The multi-car discount in Montana typically requires every vehicle on the same policy and the same garaging address—some carriers reduce the discount if a vehicle is titled to a household member on a different policy.
- Among the 16 carriers writing in Montana, Geico, Progressive, State Farm, Farmers, and Allstate all offer multi-car discounts, and the discount structure varies by carrier—some give a larger discount for three or more vehicles.
- Montana's average annual auto insurance expenditure per insured vehicle is $1,154.92, and adding a second vehicle to a policy typically costs less than starting a separate policy due to the multi-car discount.
- Montana's 1.52 traffic fatalities per 100 million vehicle miles traveled and 165.5 motor vehicle thefts per 100,000 population shape how carriers price collision and comprehensive on multi-car policies in the state.
Compare car insurance rates in your state
Get quotes from licensed carriers — no obligation, no spam, results in minutes.
Get Your Free QuoteCoverage Types
Multi-Car Policy Structure
A multi-car policy puts two or more owned vehicles on a single policy, and each vehicle can carry its own coverage level—liability only or liability plus collision and comprehensive—while the whole policy earns the multi-car discount.
Liability Insurance Per Vehicle
Each vehicle on a Montana multi-car policy must carry at least $25,000 bodily injury per person, $50,000 per accident, and $20,000 property damage—the same minimums that apply to single-vehicle policies.
Full Coverage Per Vehicle
Full coverage adds collision and comprehensive to the liability minimum, and each vehicle on a Montana multi-car policy can carry its own coverage level—one car might carry liability only while another carries full coverage.
Uninsured Motorist Coverage
Uninsured motorist coverage protects you when an at-fault driver has no insurance, and Montana does not require it—but 7.2% of Montana motorists are uninsured.
Adding a Vehicle Mid-Term
Adding a vehicle to an existing Montana policy mid-term re-rates the entire policy based on the new vehicle's profile and the updated multi-car discount, rather than adding a flat monthly amount.
Combining Household Policies
Combining two separate policies after a marriage or household member moving in earns the multi-car discount when all vehicles share a garaging address and sit on one policy.
