Updated March 2026
What Is Uninsured Motorist Coverage Insurance?
Uninsured Motorist Coverage has two components: Bodily Injury (UMBI) pays medical bills, lost wages, pain and suffering, and funeral costs when an uninsured driver injures you or your passengers. Property Damage (UMPD) pays for vehicle repairs or replacement when an uninsured driver damages your car. Most states also bundle Underinsured Motorist Coverage (UIM), which pays the gap when an at-fault driver's liability limits are too low to cover your full damages. You file the claim with your own insurer, not the at-fault driver's carrier.
How Much Does Uninsured Motorist Coverage Insurance Cost?
- State uninsured motorist rate — premiums are higher in states like Mississippi (29% uninsured) and lower in states like New Jersey (3% uninsured).
- Coverage limits selected — increasing UMBI from $25,000/$50,000 to $100,000/$300,000 typically adds $3 to $8 per month.
- Stacked vs. non-stacked coverage — stacking multiplies your limits by the number of vehicles insured, increasing cost by 30% to 60% but providing proportionally higher protection.
- Your geographic ZIP code — urban areas with higher uninsured driver densities and accident rates command higher premiums than rural zones.
- Property damage deductible — UMPD policies with a $250 deductible cost approximately $2 to $4 more per month than those with a $500 deductible.
- Claims history — filing a UM claim may increase future premiums by 10% to 20%, though some insurers treat UM claims as not-at-fault and apply no surcharge.
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