Updated April 2026
Minimum Coverage Requirements in Montana
Montana requires liability coverage with minimum limits of $25,000 bodily injury per person, $50,000 per accident, and $20,000 property damage (25/50/20). The Montana Motor Vehicle Division mandates SR-22 filing for DUI convictions, license suspensions for accumulating too many points, at-fault accidents while uninsured, and reinstatement after certain violations. SR-22 is a certificate your insurer files directly with the state proving you carry at least minimum coverage—it's not a separate insurance policy, but it marks you as high-risk and typically raises premiums significantly.
How Much Does Car Insurance Cost in Montana?
High-risk insurance in Montana costs $200–$400/mo for drivers with DUI, SR-22 requirements, or recent suspensions—roughly double to triple the $100–$150/mo standard rate for clean-record drivers. Violation type is the largest factor: DUI adds 80–150% to premiums, while a single at-fault accident adds 30–60%, and lapses in coverage add 25–50%. Montana's rural geography and long commute distances also raise rates because increased mileage correlates with higher accident risk in underwriting models.
What Affects Your Rate
- Violation type and severity—DUI increases premiums 80–150%, while at-fault accidents add 30–60% and suspended license adds 40–70%
- Time since violation—rates drop 10–20% after the first year clean, 20–40% after two years, and approach standard rates 3–5 years post-violation if no new incidents occur
- SR-22 filing duration remaining—some carriers offer slight discounts in the final year of the 3-year period if no claims or violations have occurred
- Annual mileage and commute distance—Montana's rural geography means longer average commutes, and drivers exceeding 15,000 miles/year pay 15–25% more in high-risk markets
- Credit-based insurance score—Montana allows credit as a rating factor, and high-risk drivers with poor credit pay 30–60% more than those with good credit for identical coverage
- Carrier specialization—non-standard specialists often quote 20–40% lower than standard carriers attempting to write high-risk business outside their core market
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Sources
- Montana Motor Vehicle Division – SR-22 and Financial Responsibility Requirements
- Montana Code Annotated – Title 61, Chapter 6: Financial Responsibility and Insurance
- Montana Department of Insurance – Consumer Resources