Updated July 2026
What Is Full Coverage Car Insurance Insurance?
Full coverage combines Montana's mandatory liability insurance with collision coverage that pays for damage to your vehicle in an accident and comprehensive coverage that pays for theft, vandalism, hail, and animal strikes. Liability covers the other driver's injuries and property damage when you're at fault. Collision and comprehensive protect your car regardless of fault. Lenders require this combination because the vehicle secures the loan — if it's totaled without coverage, you still owe the balance.
- You slide through a stop sign on black ice in Billings and total your car. The other driver has $8,000 in vehicle damage and $15,000 in medical bills. Your liability coverage pays the other driver up to your policy limits. Your collision coverage pays to replace your totaled vehicle minus your deductible, typically $500 to $1,000. Without collision coverage, you'd still owe your lender the remaining loan balance with no car.
- A summer hailstorm in Great Falls leaves $4,200 in dents across your vehicle. Your comprehensive coverage pays the repair cost minus your deductible. If you carried only Montana's minimum liability coverage, you'd pay the full $4,200 out of pocket. Comprehensive claims don't raise your rates the way at-fault collisions do, because weather and theft aren't driving behavior.
- You hit a deer on Highway 93 north of Missoula, causing $6,800 in front-end damage. Comprehensive coverage pays for the repair minus your deductible. Collision coverage doesn't apply here — animal strikes fall under comprehensive. Montana sees over 2,000 reported deer collisions annually, making comprehensive coverage particularly relevant for rural drivers.
Who Needs Full Coverage Car Insurance Insurance?
You need full coverage if you're financing or leasing a vehicle — your lender will require it in the loan contract and verify coverage continuously. You should strongly consider it if your vehicle is worth more than $5,000 and you couldn't afford to replace it out of pocket after a total loss. Montana's high deer collision rate and severe winter weather make comprehensive coverage particularly valuable for drivers in rural areas or along wildlife corridors.
Calculate your vehicle's actual cash value using Kelley Blue Book or a similar tool. Add up one year of collision and comprehensive premiums plus your deductible. If that total exceeds 50 percent of your car's value, you're approaching the point where liability-only makes financial sense. Keep full coverage as long as you have a loan, and reconsider annually once the loan is paid off and the vehicle depreciates.
How Much Does Full Coverage Car Insurance Insurance Cost?
Full coverage in Montana typically adds $85 to $160 per month compared to liability-only coverage, depending on your vehicle value, deductible choices, and driving record.
- Vehicle value directly determines collision and comprehensive premiums — a $40,000 truck costs more to insure fully than a $12,000 sedan because the potential payout is higher.
- Deductible selection changes your monthly cost significantly — choosing a $1,000 deductible instead of $500 can reduce your premium by 15 to 25 percent.
- Your ZIP code affects rates because collision and theft claim frequency varies between Billings, Missoula, and rural counties.
- Driving record impacts collision coverage pricing more than comprehensive — an at-fault accident in the past three years can raise your collision premium by 30 to 50 percent.
- Credit-based insurance score influences full coverage rates in Montana, though the state restricts how heavily insurers can weigh it compared to driving history.