Montana Auto Insurance Laws: What You Need to Know

State‑Specific Coverage Requirements

Montana requires every driver to carry at least a minimum of $25,000 for bodily injury per person, $50,000 for bodily injury per accident, and $15,000 for property damage. These limits are the lowest in the West and apply to all insured vehicles, including motorcycles and trailers. Failure to meet these thresholds can result in fines, license suspension, and mandatory payment of any uninsured claims.

Uninsured/Underinsured Motorist Protection

While optional, Montana offers an uninsured motorist (UM) and underinsured motorist (UIM) coverage option. Policyholders may choose a $25,000 per person and $50,000 per accident UM/UIM limit, which can be critical in hit‑and‑run or low‑coverage incidents. The state also allows a "no‑fault" coverage add‑on that pays for medical expenses regardless of fault, but this is not mandatory.

Personal Injury Protection (PIP) and Medical Payments

Montana does not require Personal Injury Protection. Instead, drivers may opt for a Medical Payments (MedPay) policy. MedPay limits range from $500 to $5,000 per person and cover medical costs incurred after an accident. Because MedPay is optional, many drivers rely on health insurance, which can leave gaps if the medical bill exceeds policy limits.

Mandatory Collision and Comprehensive Coverage for Loans

When a vehicle is financed or leased, lenders typically require collision and comprehensive coverage. In Montana, these policies must cover the actual cash value of the vehicle, not its purchase price. Failure to maintain these coverages can lead to loan default and vehicle repossession.

Claims Process and Dispute Resolution

Montana's Department of Insurance mandates a written claim form for all incidents. If a dispute arises, the state provides a free mediation program, and unresolved cases may proceed to the Montana Supreme Court. Drivers are encouraged to keep detailed records and photographs to support their claims.

Common Misconceptions

• Higher coverage limits automatically reduce premiums. In Montana, insurers often price based on risk factors, so higher limits may not lower rates.
• Health insurance covers all accident-related medical costs. Many plans exclude coverage for injuries sustained in vehicular accidents, leaving MedPay or personal injury coverage essential.