Montana Trucking Insurance Requirements

Montana follows federal insurance minimums for interstate carriers: $750,000 for general freight and $1 million for hazmat. For intrastate carriers, MDT requires adequate liability coverage, generally matching federal minimums. Montana follows a modified comparative fault system (51% bar) — a plaintiff over 51% at fault cannot recover. Montana's rural courts and sparse population produce moderate jury verdicts. Proof of insurance must be filed with MDT for carrier authority. The state's low traffic density and vast distances between population centers contribute to lower claim frequency, helping keep premiums affordable.

Cargo insurance in Montana typically requires $100,000-$250,000. The state's freight includes livestock (Montana is a major cattle state), grain and hay, timber from western Montana mills, mining materials, and oil/gas supplies from the Bakken formation area. Livestock carriers need specialized cargo coverage. Physical damage should account for wildlife strikes (deer, elk, moose — particularly dangerous on US-93 and I-90), mountain driving risks, and winter weather. Total annual insurance for a Montana owner-operator runs $8,500-$15,000. Primary liability averages $6,000-$10,000 — among the lowest nationally. Montana's rural character, low population density, and moderate legal environment keep costs very competitive.

Montana requires workers' compensation insurance for virtually all employers. The Montana State Fund is the state-chartered insurer, though private carriers also write policies. Workers' comp premiums for trucking average $8-$13 per $100 of payroll. Owner-operators need occupational accident insurance at $120-$300 per month. Montana has no state income tax since it was eliminated in 2024, making it more attractive for high-earning owner-operators. Combined with low insurance costs and no sales tax, Montana has become increasingly attractive as a trucking base state.