Liability Car Insurance: What It Covers and How Much You Need

“Liability” is just another word for responsibility. So, if you’re ever found at-fault after an accident, you’re legally responsible to pay for the damage you cause. And that’s true whether you crash into another car, hit a pedestrian or plow down your neighbor's picket fence. But with liability car insurance, your insurer foots the bill on your behalf, up to your coverage limits. 

Unfortunately, liability car insurance is not always cut and dried, and figuring out how much coverage you need can be a challenge. Here’s a closer look at:

• What liability insurance does cover (and what it doesn’t).

• What you need to know about “limits.”

• How much liability auto insurance you need.

• How much liability coverage costs.

What does liability insurance cover?

Liability car insurance covers other people’s expenses when you cause an accident. It has two main components:

• Bodily injury liability coverage pays other people’s medical costs when they’re injured in a traffic-related accident you cause. It covers things like medical bills, pain and suffering, lost wages and even funeral costs.

• Property damage liability coverage pays for damage to other people's property after a traffic-related accident you cause. This can range from cars and fences to buildings and government infrastructure, like guardrails and road signs. It may even pay for other people’s personal belongings and a rental car for the other driver.

Beyond other people’s injuries and property damage, liability car insurance may also cover your own lawyers’ bills or court fees if you’re sued after an accident.

» MORE: What does car insurance cover?

What liability auto insurance doesn't cover

Auto liability insurance won’t pay for your or your family’s medical bills or repairs to your car — it’s only designed to pay others for the damage you cause behind the wheel.

To cover your own bills, you’ll need to get additional types of insurance, such as personal injury protection or health insurance for your medical expenses as well as collision insurance for repairs to your vehicle. 

Liability car insurance vs. full coverage

While having liability car insurance may satisfy your state’s minimum requirements, it won’t pay for your own repair costs after an accident. If you want more financial protection, then you can consider full coverage car insurance.

Full coverage insurance isn't a specific type of policy. It’s a term used to describe a policy that combines liability insurance with comprehensive and collision coverage. The term “full coverage” is used because if you have all three coverage types, then your insurance policy will cover most scenarios, including damage to your own vehicle from an accident you cause. It’ll also cover damage caused by natural disasters or vandalism.

Liability car insurance limits

Liability car insurance pays only up to the maximum amounts, or “limits,” specified in your policy. If damage from an accident exceeds those limits, you'll be responsible for paying for the rest of the claim out of pocket.

Most auto policies have three main liability limits, which are often displayed as three numbers on your policy. For example, you may see something like “25/50/25” on your car insurance declaration page. Here’s how to interpret that:

Instead of having three separate limits, some insurers offer an alternative called “combined single limit” liability. Combined single limit liability is one larger liability limit to cover both bodily injury and property damage.

In many cases, the flexibility of this type of liability insurance means more financial protection than split limit coverage. However, combined single limit liability coverage generally costs more than paying for three separate limits.

» MORE: Compare car insurance

How much liability coverage you need

Nearly every state requires at least some liability coverage (or proof you have enough cash on the side to pay for damages yourself). The only exceptions are rural parts of Alaska without requirements and Virginia, where residents can waive liability coverage if they pay the state $500 annually. Here’s a list of all state minimum car insurance requirements. 

While many states have low liability limit requirements, you may want a higher limit to protect your savings and other financial assets if you cause an accident. Medical bills and car repairs can be incredibly expensive, and if you’re found at-fault then you’ll be responsible for the balance.

For example, say you hit another car, total it and seriously injure four people. If you’re at fault, you’ll be responsible for the value of the car, the medical bills of all four passengers and any damage to the roadway. Now, you’re looking at paying almost $500,000 in medical bills and another $50,000 for the car and damaged roadway. Do you have enough liability auto insurance to pay for those costs?

If your bodily injury and property damage limits aren’t high enough to cover the full amount, then you could be held personally responsible for anything above your liability limits. The people you injured could sue you for that money, and you could end up losing your home or, in some states, having your wages withheld.

» MORE: How much car insurance do you really need?

Need more auto liability insurance? Grab an umbrella

Your car insurance company might not offer liability limits high enough to cover your net worth. If you think you’ll need more liability coverage than your auto insurer will provide, consider umbrella insurance. Umbrella policies expand auto and home liability insurance beyond your carrier’s normal limits.

In general, umbrella policies cover those who have a lot of assets or more opportunities to encounter risk. You might have the sort of risk an umbrella policy is meant to cover if you:

• Host lots of parties.

• Have a swimming pool, trampoline or other feature that could be considered an “attractive nuisance.”

• Own one or more dogs. Depending on the breed of your dog, your insurer may not cover your animal.

• Own boats, RVs, multiple homes or rental properties.

» MORE: How to find the best umbrella insurance

How much does liability insurance cost?

The national average car insurance cost of minimum car insurance, which typically includes liability auto insurance and other state-mandated coverage, is $615 per year, according to NerdWallet’s April 2025 rate analysis. This rate goes up to $902 per year, on average, if you have an at-fault accident on your record. For drivers who have a recent DWI or DUI, minimum coverage liability insurance costs $1,145, on average.

Car insurance rates vary widely by state and are also influenced by things like your age, your personal driving history, the make and model of car and, in some states, your credit score. However, California, Hawaii and Massachusetts don't allow insurers to use credit when determining car insurance rates.