What Is Liability Insurance?
Liability insurance is the part of your car insurance policy that pays for injuries and property damage you cause to others when you are at fault in an accident. It is the most fundamental type of auto coverage and the only one required by law in nearly every state. Liability insurance does not cover your own injuries or vehicle damage — it exclusively protects the other party.
Liability coverage has two components. Bodily injury liability (BI) pays for the other driver’s and passengers’ medical expenses, lost wages, pain and suffering, and funeral costs. Property damage liability (PD) pays to repair or replace the other person’s vehicle, fence, building, or other property you damage.
Limits are expressed as three numbers — for example, 25/50/25 means $25,000 per person for bodily injury, $50,000 per accident total for bodily injury, and $25,000 per accident for property damage. Some insurers also offer a combined single limit (CSL), which provides one pool of money for all damages in an accident. A $100,000 CSL means the entire amount can go toward bodily injury, property damage, or any combination — offering more flexibility than split limits but typically costing more.
What Liability Insurance Covers
When you cause an accident, liability insurance covers the other party’s losses. This includes hospital stays, surgeries, physical therapy, and rehabilitation for injured drivers and passengers. It covers lost wages if injuries prevent someone from working. It pays for damage to the other driver’s vehicle and any property you hit, such as guardrails, mailboxes, or buildings.
Liability also covers your legal defense costs if you are sued after an at-fault accident. According to the Insurance Information Institute, the average bodily injury liability claim is approximately $26,500, and the average property damage claim is roughly $6,000. However, severe accidents with multiple injuries can easily generate claims of $100,000 or more, which underscores why carrying adequate limits matters.
Here is a real-world scenario: you run a red light and T-bone another vehicle carrying three passengers. Two require surgery and weeks of physical therapy. The medical bills alone could reach $150,000. If you only carry 25/50/25 state minimums, your policy pays a maximum of $50,000 for all bodily injuries combined — leaving you personally responsible for the remaining $100,000. A lawsuit could target your savings, home equity, and future wages.
What Liability Insurance Does Not Cover
Liability insurance only protects others — not you. It does not pay for your own injuries (you need PIP or MedPay for that) or damage to your own vehicle (you need collision coverage). It does not cover intentional acts, business use of your vehicle, racing, or injuries involving unlisted drivers. If damages exceed your policy limits, you are personally responsible for the remainder — a situation called being underinsured. Punitive damages are excluded by many policies as well.
Liability also does not cover damage to property you own or are transporting, damage caused while driving a vehicle not listed on your policy in most cases, or any injuries sustained while using your personal vehicle for commercial delivery services like DoorDash or Amazon Flex without a separate commercial rider. If you drive for a rideshare or delivery platform, you need a separate rideshare endorsement or commercial policy.
Who Needs Liability Insurance?
Every driver in 49 states is legally required to carry liability insurance. New Hampshire is the sole exception, though it requires proof of financial responsibility if you cause an accident. Even there, driving without coverage is a serious financial risk.
While state minimums satisfy the law, financial experts widely recommend carrying at least 100/300/100 for adequate protection. The average at-fault accident easily exceeds minimum limits, leaving drivers personally liable for the difference. If your net worth exceeds your liability limits, a lawsuit could reach your savings, home equity, and future wages. Drivers with significant assets should consider an umbrella policy that adds an extra $1 million or more in liability protection for roughly $150 to $400 per year.
Even drivers with few current assets should consider higher limits. Jury verdicts for serious auto accidents regularly exceed $500,000, and courts can garnish future wages for years or decades to satisfy a judgment. Protecting your future earning potential is just as important as protecting current assets.
How Much Does Liability Insurance Cost?
The average cost of liability-only insurance is approximately $68 per month ($814 per year), according to MoneyGeek. State-minimum-only policies average about $51 per month ($618 per year). Increasing from minimum limits to 100/300/100 typically adds only $20 to $40 per month — a small price for significantly better protection.
Several factors affect your rate. Credit score has the largest impact in most states — poor credit can add roughly $1,039 per year over good credit. A clean driving record keeps costs low, while a single DUI adds about $642 per year on average. Age matters too: drivers under 25 pay 50% to 130% more than those aged 30 to 60. Location plays a significant role, with Michigan, Florida, and Louisiana ranking among the most expensive states, while Maine, Vermont, and Idaho are among the cheapest.
Auto insurance rates rose 57% from 2022 to 2024 but fell approximately 6% in 2025 and are expected to stabilize in 2026. Shopping around remains the most effective way to save — quotes for the same driver can vary by $500 or more between companies for identical coverage.
Is Liability Insurance Required?
Yes — 49 states plus Washington D.C. require liability insurance. Virginia previously allowed a $500 uninsured motorist fee as an alternative, but eliminated that option in July 2024. Florida uniquely does not require bodily injury liability — only $10,000 in property damage liability and $10,000 in PIP. However, Florida lawmakers are expected to add a BI requirement when the state’s PIP repeal takes effect in July 2026.
State minimums vary widely. Pennsylvania sits at the low end with 15/30/5, while Alaska and Maine require 50/100/25. Several states recently raised their minimums: California moved to 30/60/15 in January 2025, North Carolina to 50/100/50 in July 2025, and New Jersey is increasing to 35/70/25 in 2026. The nationwide trend is toward higher mandatory minimums as medical costs and vehicle repair expenses continue to climb, with at least six states increasing minimums in the last two years.
Compare Liability Insurance Rates
Liability insurance rates vary dramatically between companies. The same driver can see quotes differ by hundreds of dollars for identical coverage. We recommend comparing at least three quotes from major insurers to find the best rate for your profile. Start with our company reviews to see which insurers score highest in your state.
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Sources
- Insurance Information Institute — Auto Insurance Facts & Statistics
- MoneyGeek — How Much Does Liability Coverage Cost?
- NAIC — 2022/2023 Auto Insurance Database Report