Montana Car Insurance Calculator: Cost & Coverage

• Rates on this page are from Quadrant Information Services and are updated monthly using live Montana insurer filings. Quadrant is the same data source insurance carriers use for actuarial pricing.
• All rates reflect a baseline profile: a 40-year-old driver with good credit, a clean driving record and full coverage (100/300/100 limits, $1,000 deductible) on a 2023 Toyota Camry. Your rate will differ based on your profile. The calculator above uses your Montana ZIP code and profile answers to personalize your estimate.
• Mark Fitzpatrick, a Licensed Property and Casualty Insurance Producer and MoneyGeek's resident insurance expert, reviewed the analysis on this page.
• MoneyGeek doesn't sell insurance policies or accept payments from insurers in exchange for rankings or recommendations. Rate data comes from verified state filings and independent industry sources, not directly from insurance companies.

Montana’s cheapest and most expensive full coverage insurers differ by $74 per month, or $888 annually, for the same driver profile. State Farm has the state’s lowest rates for most drivers, including those with tickets, accidents, DUIs, young drivers and seniors. Farmers is the most expensive for standard drivers, while 

State Farm becomes the most expensive option for drivers with poor credit.

That credit gap is especially sharp at State Farm. Good-credit drivers pay about $80 per month, while poor-credit drivers pay $698. Kemper is the better option for poor-credit drivers at $206 monthly. Montana drivers with low credit should compare quotes carefully, as the cheapest Montana insurer can quickly become the most expensive depending on credit tier.

Your Montana ZIP code changes full coverage rates by up to $23 per month statewide. Billings has the state’s highest rates, while rural southwest Montana ZIP codes near Wisdom and Dillon are among the cheapest. More than half of the statewide ZIP code gap exists within Billings itself.

Billings rates run higher because of both traffic density and vehicle theft risk. Minimum coverage rates reflect its larger population, while full coverage premiums also factor in higher comprehensive claim exposure tied to theft rates.

Montana full coverage rates average $283 per month for drivers ages 16 to 24 compared to $118 for adult drivers. The largest single-year savings arrive at age 17, when rates drop by $148 monthly. By comparison, the drop from 24 to 25 is only $13.

Carrier rankings also shift by age. Allstate prices young drivers more competitively than many rivals, while GEICO becomes more expensive for younger drivers. Rates reach their lowest point around age 60 before rising again after 70, making regular quote comparisons important for both young and senior drivers.

Credit score has the largest effect on Montana car insurance rates. Drivers with poor credit pay about $360 per month for full coverage, while good-credit drivers pay $118, a $242 monthly gap.

Montana also has an unusual pricing pattern. Six of seven major insurers charge slightly more for excellent credit than for good credit. State Farm shows the largest difference, with rates rising from $80 monthly for good credit to $698 for poor credit. Drivers who improve from poor to good credit should re-shop immediately because insurers don't automatically adjust rates mid-policy.

Montana insurers raise rates after violations, but the increase varies by company. An at-fault accident adds about $50 per month on average; a DUI adds $57. Some carriers shift a lot after serious violations. GEICO moves from one of the cheapest options for clean drivers to the most expensive after a DUI. State Farm stays among the cheapest in both cases.

Compare quotes right after a violation rather than waiting for it to age off your record. Montana requires SR-22 filings after DUI convictions, and the requirement lasts for three years from license reinstatement.

Minimum coverage costs about $69 less per month than full coverage in Montana. That savings comes with more financial risk because Montana is an at-fault state. Drivers are personally responsible for damages above their policy limits under Montana's modified comparative negligence law.

Minimum coverage is the right call for older vehicles with low replacement value, but it creates more exposure for financed or newer vehicles. Comprehensive and collision coverage are worth carrying on any vehicle that still holds real value.

Montana ranks second nationally for wildlife collision risk, with a one in 53 risk compared to the national average of one in 139. That higher collision risk changes the value of comprehensive coverage compared to many other states.

Wildlife collisions are a larger comprehensive risk in Montana than theft. Drivers considering dropping comprehensive coverage should factor in the state’s unusually high animal strike risk before making that decision.

Bodily injury liability coverage pays the medical bills, lost wages and legal costs of people you injure when you’re at fault. Montana’s legal minimum is $25,000 per person and $50,000 per crash, per the Montana Commissioner of Securities and Insurance. Bodily injury liability appears in your recommendation above the minimum because Montana is an at-fault state with direct personal exposure above your policy limit. A single serious injury can exceed $25,000 quickly. The recommended amount is higher because the legal minimum is designed for compliance, not full financial protection after a serious crash.

Property damage liability coverage pays for damage you cause to other people’s vehicles and property when you’re at fault. Montana requires $20,000 per crash. On Montana’s rural roads, crashes can involve livestock, fence lines, outbuildings and heavy machinery far from urban repair services. The state minimum is often the starting point of what a rural Montana crash costs, not the ceiling. The recommended amount reflects that additional exposure.

Uninsured and underinsured motorist coverage pays your medical bills and repair costs when the driver who hit you has no insurance or not enough coverage to pay for the damage. Montana law requires both UM and UIM coverage on every policy under MCA § 33-23-201 unless you reject them in writing. Because Montana’s minimum bodily injury limit is only $25,000 per person, underinsured motorist coverage matters more often than uninsured coverage in serious crashes. Montana also allows UM/UIM stacking, which increases the coverage available across multiple vehicles on the same policy.

Collision insurance pays for damage to your own vehicle after a crash regardless of fault, while comprehensive insurance covers theft, weather damage, fire and animal strikes. Comprehensive appears in your recommendation because financed vehicles require it or because Montana ranks second nationally for wildlife collision risk at 1 in 53 odds, nearly three times the national average. Wildlife collisions are the state’s primary comprehensive claim risk, which changes the value calculation for keeping the coverage.

Gap insurance pays the difference between your vehicle’s actual cash value and the remaining loan balance if the car is totaled. It appears in your recommendation when your outstanding loan balance is likely higher than the vehicle’s market value, which is common during the first few years of financing. Montana law does not require gap insurance, but lenders and loan balances often make it financially useful.

An SR-22 is a certificate your insurer files with the Montana Motor Vehicle Division confirming that you carry active minimum coverage. It is not insurance itself. Montana requires SR-22 filings after DUI convictions, driving without insurance and certain serious traffic violations. The filing period lasts three years from your license reinstatement date, not the conviction date. If the policy lapses, your insurer files an SR-26 notice and your license can be suspended immediately.

Step 1: Compare quotes from all major Montana insurers. State Farm has the cheapest average full coverage rate in Montana at $80 per month, but many comparison platforms don't show the full market. The gap between State Farm and Farmers is $74 per month, or $888 annually, for the same driver profile and coverage level. Get quotes from all seven major insurers before choosing a policy.

Step 2: Check quotes again when your credit improves. Credit score has a larger impact on Montana rates than ZIP code or coverage level. Drivers with poor credit pay about $242 more per month than drivers with good credit. Montana also has an unusual pricing pattern: six of seven insurers charge slightly more for excellent credit than for good credit. Once your score reaches the good tier, pull new quotes because insurers don't automatically re-rate policies mid-term.

Step 3: Pull new quotes at 17, 19 and 21. Montana's largest age-related rate drop happens at 17, when premiums fall by $148 per month. Rates drop another $82 at 19 and $78 at 21. The savings at those birthdays are much larger than the small decrease drivers see at 25. Carrier rankings also shift for younger drivers, so the cheapest insurer at 16 may not stay cheapest at 17 or 19.

Step 4: Get new quotes right after a DUI. A DUI changes Montana insurer pricing. GEICO averages $270 per month after a DUI, while State Farm averages $84 for the same driver profile. Drivers who stay with the wrong insurer after a DUI can overpay by more than $2,200 annually. Getting new quotes at conviction is usually more valuable than waiting for the violation to age off your record.