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.
- An uninsured driver runs a red light and T-bones your sedan. You sustain $28,000 in medical bills, miss six weeks of work costing $9,000 in lost wages, and your vehicle sustains $14,000 in damage. The at-fault driver has no insurance and no assets. Your Uninsured Motorist Bodily Injury coverage with $50,000 limits pays your $37,000 in injury-related costs. Your Uninsured Motorist Property Damage coverage with $25,000 limits pays $14,000 for vehicle repairs.
- A driver with minimum state liability of $25,000 causes a crash that leaves you with $65,000 in medical expenses and $12,000 in rehab costs. Their insurer pays their $25,000 policy limit. Your Underinsured Motorist coverage with $100,000 limits pays the remaining $52,000, covering the gap between what you're owed and what the at-fault driver's policy provided. Without UIM, you'd face $52,000 in out-of-pocket costs or a lawsuit against a likely judgment-proof defendant.
- Your car is hit in a parking lot while you're inside a store. The driver flees and is never identified. You have $4,800 in vehicle damage and $2,200 in chiropractic bills from whiplash. In states where Uninsured Motorist Property Damage covers hit-and-runs, your UMPD pays the $4,800 repair (minus your deductible, typically $250–$500). Your UMBI pays the $2,200 medical cost. In states that exclude hit-and-runs from UMPD, only collision coverage would pay for the vehicle damage.
Who Needs Uninsured Motorist Coverage Insurance?
This coverage is essential if you live in a state with high uninsured motorist rates, drive in urban areas with heavy traffic, or lack sufficient health insurance to cover major injury costs. If your state requires only minimum liability limits (such as $25,000 per person), underinsured motorist coverage becomes critical since many at-fault drivers carry insufficient coverage to pay serious injury claims. Drivers with high incomes or dependents who rely on their earnings should carry UM limits matching or exceeding their liability limits to protect against wage loss.
Calculate your exposure: multiply your state's uninsured motorist rate by your annual probability of being in an at-fault crash caused by another driver (roughly 3% for average drivers). If your health insurance out-of-pocket maximum exceeds $10,000 or doesn't cover auto injuries, carry UMBI at least matching your liability limits. If your state's uninsured rate exceeds 15% or you regularly encounter heavy traffic, this coverage typically returns more value per dollar than other optional coverages like rental reimbursement or roadside assistance.
How Much Does Uninsured Motorist Coverage Insurance Cost?
Uninsured Motorist Coverage typically adds $5 to $15 per month or $60 to $180 annually to your premium, varying significantly by state uninsured driver rates and required limits.
- 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.