Updated April 2026
What Is Uninsured Motorist Coverage Insurance?
Uninsured Motorist Coverage has two parts: Uninsured Motorist Bodily Injury (UMBI) pays for your medical bills, lost wages, and pain and suffering when an at-fault driver has no insurance or flees the scene in a hit-and-run. Uninsured Motorist Property Damage (UMPD) covers repairs to your vehicle when the at-fault driver is uninsured. Some states also offer Underinsured Motorist Coverage (UIM), which kicks in when the at-fault driver's liability limits are too low to cover your full damages. This coverage protects you and your passengers regardless of your driving record—if someone else causes the accident and can't pay, your UM coverage steps in.
- You're stopped at a red light when another driver rear-ends you and immediately drives off without stopping. You sustain $18,000 in medical bills and $6,500 in vehicle damage. The police never identify the driver. Your UMBI coverage pays the $18,000 in medical expenses up to your policy limits, and your UMPD (if you carry it) or collision coverage pays the $6,500 in vehicle repairs minus your deductible. Without UM coverage, you'd be responsible for all costs yourself or rely on your health insurance and hope to recover costs later.
- A driver runs a stop sign and T-bones your vehicle, causing $22,000 in medical bills for you and your passenger, plus $9,000 in vehicle damage. The at-fault driver admits fault but has no insurance. Your UMBI coverage pays up to your selected limits (if you carry $50,000 per person, you're covered for the $22,000), and UMPD or collision pays for the vehicle repairs. If you only carried state minimum liability on your own policy and no UM coverage, you'd have to sue the uninsured driver personally—a process that could take years and may never result in payment if they have no assets.
- You're injured in an accident caused by a driver who carries only their state's minimum liability limit of $25,000 per person. Your medical bills, lost wages, and rehabilitation costs total $65,000. The at-fault driver's liability insurance pays their $25,000 limit, but you're still $40,000 short. Your Underinsured Motorist Coverage pays the remaining $40,000 (up to your UIM limits), protecting you from financial devastation. This scenario is common for high-risk drivers who may already be managing SR-22 requirements or higher premiums—UM/UIM coverage ensures one more accident doesn't bankrupt you.
Who Needs Uninsured Motorist Coverage Insurance?
Uninsured Motorist Coverage is critical for high-risk drivers managing DUIs, violations, or SR-22 requirements—you're already paying elevated premiums, and one accident with an uninsured driver could saddle you with medical debt or lawsuit judgments that worsen your financial situation. If you live in a state with high uninsured motorist rates (above 15%), drive in urban areas with frequent hit-and-runs, or have significant assets or income that could be targeted in a lawsuit, UM/UIM coverage is essential. Even if you carry only liability insurance to meet state minimums, adding UM coverage is one of the most cost-effective ways to protect yourself from others' lack of coverage.
Ask yourself: If an uninsured driver caused $30,000 in medical bills and totaled my car tomorrow, could I pay those costs out of pocket without financial hardship? If the answer is no—and for most drivers with violations or SR-22 requirements already managing tight budgets, it is—carry UM coverage at limits matching or exceeding your liability limits. If your state requires it, you have no choice, but even where optional, UM coverage typically costs less than $25 per month and can prevent financial ruin from someone else's decision to drive uninsured.
How Much Does Uninsured Motorist Coverage Insurance Cost?
Uninsured Motorist Coverage typically adds $10 to $30 per month ($120 to $360 annually) to your auto insurance premium, though costs vary widely by state, coverage limits, and your driving record.
- Your selected UM/UIM limits—higher limits (like $100,000/$300,000) cost more than minimum coverage but provide substantially better protection if you're hit by an uninsured driver.
- Your state's uninsured driver rate—states with higher percentages of uninsured motorists (like Florida, Mississippi, or New Mexico) typically charge more for UM coverage due to increased claim frequency.
- Your driving record and risk profile—drivers with DUIs, at-fault accidents, or violations often pay 20% to 40% more for UM coverage as part of their overall higher non-standard insurance rates.
- Whether you bundle UMBI and UMPD or rely on collision coverage for vehicle damage—some states require UMPD, while others let you decline it if you already carry collision.
- Stacking options in your state—some states allow you to 'stack' UM limits across multiple vehicles on your policy, doubling or tripling your available coverage but also increasing your premium by 30% to 50%.
- Your ZIP code and local claim patterns—urban areas with higher hit-and-run rates or uninsured driver concentrations often see higher UM premiums than rural areas.