Average Cost of Car Insurance in Montana for 2026

Car insurance in Montana costs $112 per month for full coverage and $44 for minimum coverage, both below the national average of $124 and $60. 

Your actual rate shifts based on factors you control, like which company you choose and your coverage level, and factors you can't easily change, like your city and age.

Coverage level moves Montana premiums across a $126 monthly range, from $50 for minimum liability to $176 for minimum liability with a $0 deductible. Adding comprehensive and collision coverage to a minimum liability policy with a $1,000 deductible costs $25 more per month ($299 more per year). That step widens coverage and includes damage to your own vehicle from accidents, theft, hail and deer collisions, which are real risks in Montana. The standard full coverage, 100/300/100 liability with a $1,000 deductible, averages $124 per month ($1,490 per year).

Deductible choices lead to larger cost differences than liability limit increases. The $0 deductible option paired with minimum liability costs $176 per month, $38 more per month than a 300/500/300 policy with a $1,500 deductible at $138 per month, while leaving you with lower liability protection.

Billings drivers pay $124 per month for full coverage, $18 more than Helena's $106. That’s a $216 annual gap across Montana's nine largest cities. Kalispell is the second most expensive at $119 per month, and Missoula's cost average is $107, just $1 above Helena.

Billings has the highest average rate in the state due to its higher traffic density, higher vehicle theft frequency and greater accident volume. Helena's lower rate is because of its smaller population, lower crime rates and the pricing stability that comes with a government-employee-heavy workforce that files fewer claims.

A 16-year-old driver on a family plan in Montana pays $3,273 per year, with the sharpest drop at age 17 when rates drop by $238. Montana does not permit gender to influence pricing decisions, so only age affects car insurance rates in the state. There is no male/female premium split, which is different from the majority of other states.

Use our free calculator to estimate your Montana car insurance cost based on your age and driver profile.

A clean driving record costs $124 per month for full coverage in Montana; a DUI raises that to $187, a $63 monthly increase. A not-at-fault accident raises full coverage from $124 to $127 per month. At-fault accidents increase premiums to $176 per month ($2,110 per year), a 42% increase over a clean record.

Drivers with serious violations may also need to file an SR-22 in Montana to maintain driving privileges.

Drivers with poor credit pay $340 per month for full coverage in Montana, compared to $111 for those with good credit. That’s a $229 monthly difference that adds $2,748 per year. 

Montana permits insurers to use credit scores as a rating factor, which makes credit improvement one of the longest-lasting strategies for lowering premiums over time. A driver at the $340 rate who moves from poor to good credit gets more annual savings than switching from minimum to full coverage.

Understanding how insurance costs by vehicle vary before your next purchase can save hundreds annually. Full coverage in Montana ranges from $131 per month for a Honda Civic to $248 for a Tesla Model Y, a $117 monthly difference that adds up to $1,404 per year. The Toyota Camry and Honda Accord cluster in the $135 to $146 per month range, while a Ford F-150 costs $137 per month to insure.

Montana's hail exposure adds real weight to the EV cost premium, as each model's battery systems and sensors require specialized technicians and proprietary parts to repair. The Tesla Model 3 costs $208 per month, $77 more than the Civic, making conventional and hybrid vehicles the cheaper options to insure in Montana.

State Farm prices full coverage in Montana at $1,020 per year, while a Farmers policy costs $1,714 per year. Shopping around can save up to $694 per year based on the current spread between the cheapest and most expensive companies in Montana.

For many drivers, the target is to find the cheapest car insurance from a company that pays claims reliably. It isn’t just about finding the lowest rate in the market.

Your driver profile also determines which company prices you most favorably, so compare quotes from at least three companies to find the best car insurance companies in Montana for you.

We used this profile to determine auto insurance costs across all available ZIP codes and cities in Montana:

• 40 years old
• Clean driving record
• Good credit
• 2012 Toyota Camry LE

Sections on cost by age and driving record use rates for those driver profiles, with all other factors held constant.

Minimum coverage is a state's minimum liability coverage. Full coverage is a policy with 100/300/100 liability limits and a $1,000 deductible for comprehensive and collision coverage.