The weight of the truck affects truck insurance rates. Heavier vehicles require higher coverage limits, and so cost more to insure. This is in part due to the amount of damage a heavier vehicle can cause compared to a slower one, as well as the difficulty of stopping suddenly.

The cheapest state for commercial truck insurance is Mississippi. In some instances, Mississippi's rates are four times less than other states. For example, an estimated cost of insurance in Mississippi is $4,664, while in Georgia it would cost $20,641.

The average semi truck insurance costs between $3,000 and $5,000 a year for owner operators that lease on to a motor carrier. For an owner operator with their own authority, the average cost is $9,000-$12,000 per truck.