Uninsured motorist coverage helps protect you when an at-fault driver has no auto liability insurance. Depending on the policy and state, it can help pay for injuries to you and your passengers, and some policies also provide protection for vehicle damage. It may also apply to certain hit-and-run accidents. Coverage requirements, available limits, and claim rules vary significantly by state.
Key Takeaways
- Uninsured motorist coverage can help when an at-fault driver has no liability insurance.
- Uninsured motorist bodily injury coverage generally focuses on injuries to you and eligible passengers.
- Uninsured motorist property damage may cover damage to your vehicle, but availability and claim rules vary by state.
- Underinsured motorist coverage addresses a different problem: the at-fault driver has insurance, but not enough to cover the applicable loss.
- Some states require UM coverage, while others require insurers to offer it or allow consumers to reject it under specified conditions.
How Uninsured Motorist Coverage Works
Liability insurance is designed to pay for injuries or property damage a driver causes to other people. But liability coverage can only help if the at-fault driver actually has applicable insurance available.
Uninsured motorist coverage, commonly shortened to UM, is designed to fill part of that gap. Instead of relying entirely on an uninsured at-fault driver to personally pay your losses, you may be able to make a claim under your own auto policy.
The exact benefits depend on the type of UM coverage included in your policy, your coverage limits, the circumstances of the accident, and applicable state law.
Simple distinction: liability coverage primarily protects you when you injure someone else or damage someone else’s property. Uninsured motorist coverage can protect you when another driver is responsible but lacks applicable liability insurance.
What Does Uninsured Motorist Coverage Pay For?
Uninsured motorist protection can be divided into bodily injury and property damage coverage. Not every state or policy provides both forms in the same way.
Uninsured Motorist Bodily Injury
Uninsured motorist bodily injury coverage (UMBI) can help pay qualifying injury-related losses when an uninsured driver is legally responsible for an accident.
Depending on state law and policy wording, covered losses can involve expenses or damages associated with injuries to you and eligible passengers. The precise categories of damages available under a UM claim depend on the policy and jurisdiction.
Uninsured Motorist Property Damage
Uninsured motorist property damage coverage (UMPD) can help pay for vehicle damage caused by an uninsured at-fault driver when the claim meets the policy’s requirements.
UMPD is particularly state-specific. Some states may limit how much it pays, require the uninsured driver to be identified, apply a deductible, or structure the coverage differently. In some situations, collision coverage may provide another path for repairing your vehicle.
Uninsured vs. Underinsured Motorist Coverage
Uninsured and underinsured motorist coverage solve related but different problems.
| Coverage | Other Driver’s Insurance | What It Is Designed to Address |
|---|---|---|
| Uninsured motorist | No applicable liability insurance. | Qualifying losses caused by an uninsured at-fault driver. |
| Underinsured motorist | Liability insurance exists, but available limits are insufficient. | Qualifying losses that exceed the at-fault driver’s available insurance, subject to policy and state rules. |
For example, an uninsured driver may have no bodily injury liability insurance at all. An underinsured driver, by contrast, may have liability insurance but not enough available coverage to address the full amount of a serious qualifying injury claim.
Does Uninsured Motorist Coverage Apply to Hit-and-Run Accidents?
Uninsured motorist bodily injury coverage can apply to certain hit-and-run accidents, but the requirements vary by state and policy.
A hit-and-run driver cannot always be identified or confirmed as insured. State law and policy provisions determine when the unknown vehicle is treated as an uninsured motorist for purposes of a UM claim.
There may also be claim requirements such as promptly reporting the crash, notifying law enforcement, or providing evidence about how the accident occurred.
Property damage can be different: do not assume UMPD will automatically pay for vehicle damage in every hit-and-run. Some states or policies impose additional requirements when the other driver cannot be identified.
Is Uninsured Motorist Coverage Required?
There is no single nationwide answer. State law controls whether uninsured motorist coverage is mandatory, must be offered, can be rejected, or is handled through another structure.
For example, New York includes uninsured motorists coverage among its required minimum auto insurance protections. California takes a different approach: insurers must offer uninsured and underinsured motorist coverage, but a consumer can decline it by signing a waiver.
| State Example | General UM Treatment | Consumer Takeaway |
|---|---|---|
| New York | Uninsured motorists bodily injury protection is part of required minimum auto coverage. | Additional supplementary uninsured/underinsured protection may also be available. |
| California | Insurers must offer uninsured/underinsured motorist coverage, but consumers may reject it by signing a waiver. | Being offered UM does not mean every driver is legally required to purchase it. |
These examples show why you should check the current rule in your own state rather than relying on a nationwide summary. Your state insurance department can explain applicable requirements.
How Much Uninsured Motorist Coverage Do You Need?
Available UM limits depend on state law and the insurer. In some states, the coverage may be connected to the bodily injury liability limits you select.
When choosing a limit, think about the financial impact of being seriously injured by a driver who has no usable liability insurance. Medical expenses are only one potential concern. A serious injury can also create lost income and other financial consequences, depending on what damages the policy and state law permit you to recover.
Compare available limits and premiums rather than automatically choosing the smallest amount available.
A Practical Uninsured Motorist Claim Example
Assume another driver runs a red light and causes a crash that injures you. The example below is hypothetical and does not represent average claim costs.
Scenario: The other driver is legally responsible for the accident but has no liability insurance. You have uninsured motorist bodily injury coverage on your own policy.
Potential result: Instead of depending solely on the uninsured driver to personally reimburse you, you can submit a UM claim to your insurer. Payment would depend on establishing the claim, applicable damages, your policy limit, policy conditions, and state law.
UM coverage does not guarantee that every expense from an accident will be paid. Coverage limits and claim rules still apply.
Uninsured Motorist Property Damage vs. Collision Coverage
UMPD and collision coverage can sometimes both be relevant when an uninsured driver damages your vehicle, but they are not interchangeable.
| Feature | UM Property Damage | Collision Coverage |
|---|---|---|
| Main trigger | Qualifying damage caused by an uninsured motorist. | Covered collision damage to your vehicle, subject to policy terms. |
| Other driver must be uninsured? | Generally yes. | No. |
| Deductible | Depends on state and policy. | Usually subject to the collision deductible you selected. |
| Availability | Varies considerably by state. | Common optional physical damage coverage; lenders or lessors may require it. |
If you carry both coverages, ask your insurer how a claim involving an uninsured driver would be handled and which deductible, limit, or coverage provision would apply.
Is Uninsured Motorist Coverage Worth It?
Where uninsured motorist coverage is optional, deciding whether to buy it means comparing the premium with the financial risk of being injured by someone who cannot provide adequate insurance compensation.
The other driver’s lack of insurance does not make your medical expenses or other financial losses disappear. You may be able to pursue the driver personally, but an uninsured motorist may have limited assets available to satisfy a judgment.
UM coverage therefore can provide a useful layer of protection even for drivers who already have health insurance, collision coverage, or other insurance. Those products address different risks and may not replace the benefits available under uninsured motorist coverage.
Important Coverage Limitations to Check
Do not assume every uninsured motorist policy works the same way. Before choosing coverage or filing a claim, review the declarations page and policy language.
- Coverage limits: The insurer generally will not pay beyond the applicable policy limit.
- Covered people: Policy definitions determine which drivers, family members, and passengers qualify as insureds.
- Hit-and-run rules: Reporting and evidence requirements can apply.
- Property damage: UMPD availability, limits, deductibles, and identification requirements vary.
- State-specific claim rules: The relationship between UM, UIM, liability insurance, and other benefits is not identical nationwide.
Frequently Asked Questions
The Bottom Line
Uninsured motorist coverage protects against a risk that ordinary liability insurance cannot solve: being injured or otherwise suffering a qualifying loss because another driver was responsible but did not carry applicable insurance.
UM bodily injury coverage generally focuses on injuries, while UMPD can provide vehicle-damage protection where available. Underinsured motorist coverage provides related protection when the at-fault driver has insurance but not enough.
Because requirements and benefits vary substantially by state, review your declarations page and compare the UM and UIM limits available to you before accepting or rejecting the coverage.
Sources
- National Association of Insurance Commissioners, What Does Auto Insurance Cover?, 2026.
- National Association of Insurance Commissioners, Uninsured Motorists, updated 2025.
- National Association of Insurance Commissioners, Consumer Auto Insurance, accessed August 2026.
- California Department of Insurance, Automobile Insurance Consumer Information, accessed August 2026.
- New York State Department of Financial Services, Automobile Insurance Coverage Checklist, 2025.