Your state says you need $15,000 in bodily injury coverage. A single ER visit for a broken leg can run $20,000 before physical therapy. If you cause that crash, the extra $5,000 comes out of your pocket — and that’s before the injured person’s lawyer gets involved. Most state minimums were set decades ago and haven’t kept pace with medical costs or lawsuit judgments.
The short answer
Liability car insurance covers damage you cause to other people and their property when you’re at fault. Your insurer pays their medical bills, lost wages, repair costs, and legal defense if you’re sued — up to your policy limit. It does not cover your own vehicle damage or your own medical bills.
What liability car insurance actually covers
Liability breaks into two parts: bodily injury (BI) and property damage (PD). Both are mandatory in every state except New Hampshire.
Bodily injury liability pays for:
- Medical treatment for people you injure (ambulance, ER, surgery, ongoing care)
- Lost wages if they miss work due to the injury
- Pain and suffering damages awarded in court
- Legal defense costs if you’re sued
- Court judgments up to your policy limit
Property damage liability pays for:
- Repairs or replacement of other vehicles you damage
- Damage to buildings, fences, guardrails, utility poles, or other property
- Legal costs if a property owner sues
Your insurer assigns an attorney and handles the legal side. If you lose in court, they pay the judgment up to your coverage limit. Anything above that limit is your personal responsibility.
What liability insurance does not cover
This is where most drivers get surprised. Liability only covers what you do to others. Here’s what it leaves out:
| You Need Coverage For | Liability Covers It? | What You Actually Need |
|---|---|---|
| Your own car’s damage | No | Collision coverage |
| Your own medical bills | No | MedPay or PIP (personal injury protection) |
| Rental car while yours is repaired | No | Rental reimbursement endorsement |
| Damage from an uninsured driver | No | Uninsured/underinsured motorist coverage |
| Rideshare driving (Uber, Lyft) | Usually no | Commercial or rideshare endorsement |
Liability also won’t cover you if you cause a crash intentionally, while racing, or in some states while driving under the influence. Those fall outside the policy’s terms.
The state minimum problem: why 15/30/5 isn’t enough
Most states require liability minimums written as three numbers: 15/30/5, 25/50/25, or similar. Here’s what those mean:
- 15 = $15,000 bodily injury per person
- 30 = $30,000 bodily injury per accident (total)
- 5 = $5,000 property damage
Seventeen states still allow 15/30/5 as the minimum. That $30,000 total might sound adequate until you look at what crashes actually cost.
According to the Insurance Information Institute, the average bodily injury claim involving an attorney settles between $60,000 and $250,000 depending on injury severity. Medical costs alone for a moderate injury — broken bones, concussion, soft tissue damage — routinely exceed $50,000 once you add ambulance transport, imaging, surgery, and follow-up care. NAIC data shows that median hospital costs for emergency treatment following a car crash run $35,000–$75,000 before accounting for follow-up surgeries or rehabilitation.
Real-world scenario: You cause a two-car crash. One driver suffers a back injury requiring surgery ($45,000 in medical bills) and misses three months of work as a project manager earning $90,000/year (another $22,500 in lost wages). Their attorney files a claim for $80,000. Your 15/30/5 policy pays $15,000 — the per-person limit. You owe the remaining $65,000 personally, and the court can garnish your wages or place a lien on your home to collect it.
State minimums were set decades ago and rarely increase. They’re the legal floor, not the safe ceiling.
What your state actually requires
Requirements vary widely. Here’s a sample of state minimums as of 2026:
| State | Minimum Liability (BI/PD) | State | Minimum Liability (BI/PD) |
|---|---|---|---|
| California | 15/30/5 | Texas | 30/60/25 |
| Florida | 10/20/10 | New York | 25/50/10 |
| Michigan | 50/100/10 | Pennsylvania | 15/30/5 |
| Ohio | 25/50/25 | Illinois | 25/50/20 |
| Georgia | 25/50/25 | Arizona | 25/50/15 |
| North Carolina | 30/60/25 | Tennessee | 25/50/15 |
Check your state’s exact requirement at your state insurance department website or the NAIC state resources page. Requirements change periodically, and some states mandate additional coverage types like personal injury protection (PIP) or uninsured motorist coverage.
How much liability coverage costs
Here’s what you’ll typically pay annually for liability-only coverage at different tiers. Costs vary significantly by age, driving record, location, and insurer:
| Coverage Tier | What It Means | Typical Annual Range |
|---|---|---|
| State minimum (15/30/5) | Bare legal requirement | $450–$650 |
| Moderate (50/100/50) | Recommended for most drivers | $600–$850 |
| Higher (100/300/100) | Better lawsuit protection | $750–$1,050 |
The jump from minimum to 50/100/50 is often $100–$200 per year — less than $20/month. The jump to 100/300/100 adds another $100–$150 annually.
Your actual premium depends on your age, driving record, vehicle, and state. Teens and drivers with accidents or violations pay two to four times more. Michigan, Louisiana, and Florida have the highest average premiums; Maine, Idaho, and Iowa the lowest. Bundling with homeowners or renters insurance, maintaining a clean record, and paying in full can cut costs by 10–25%.
Premiums vary widely by individual, so get quotes at multiple coverage tiers before deciding.
Choosing your coverage limit based on what you own
State minimums are cheap because they shift lawsuit risk onto you. Your coverage decision should match what you stand to lose in a judgment. Here’s how to think through your options based on your assets:
You have minimal assets (no home equity, limited savings, income below median):
- State minimum might suffice if you’re judgment-proof in your state
- Understand you’re personally liable for damages above the limit
- Courts can garnish wages, but if you rent and have no savings, creditors have little to seize
- Risk: future earnings and savings are still vulnerable for years
You have moderate assets ($50,000–$300,000 net worth: owned home with a mortgage, retirement account, some savings):
- Carry at least 50/100/50, preferably 100/300/100
- A $150,000 judgment against you with 25/50/25 coverage means you owe $100,000 personally — enough to force a home sale or drain retirement savings
- The cost difference between minimum and 100/300/100 is often $200–$400/year
- This is the bracket where most drivers underinsure without realizing it
You have significant assets ($300,000+ net worth: home with equity, investment accounts, substantial retirement savings):
- Carry 100/300/100 or 250/500/100 at minimum
- Add an umbrella policy (see next section) — you have enough to lose that the extra layer is worth it
- If you cause a serious multi-vehicle crash, settlements can easily reach $500,000–$1 million
- Think of it this way: if a judgment could wipe out half your net worth, you’re underinsured
I spent twelve years quoting policies, and the most common regret I heard was “I bought the minimum to save $15/month and now I owe $40,000 on a judgment.” The second most common: “I didn’t know liability wouldn’t cover my own car.” Don’t assume the cheapest option is the smartest.
Umbrella coverage: the next layer of protection
If you own a home, have retirement savings, or earn above the median income in your area, an umbrella policy is the single most cost-effective way to protect your assets. Here’s how it works:
What it is: Personal liability coverage that sits on top of your auto and homeowners insurance. If a judgment exceeds your auto policy limit, the umbrella kicks in and pays the excess up to its own limit — typically $1 million, $2 million, or $5 million.
What it costs: $150–$300 per year for $1 million in coverage, according to industry data tracked by CIAB. Each additional million typically adds $50–$100 annually. Compare that to the risk: a single serious crash judgment can exceed $500,000 if multiple people are injured.
What you need to qualify: Most insurers require you to carry at least 100/300/100 auto liability and $300,000+ homeowners liability before they’ll sell you an umbrella. That’s not padding — it’s because the umbrella only pays after your underlying policies max out.
Real-world example: You cause a crash that seriously injures two people. Medical bills, lost wages, and pain-and-suffering total $850,000. Your 100/300/100 auto policy pays $300,000 (the per-accident limit). Your $1 million umbrella pays the remaining $550,000. Without the umbrella, you owe $550,000 personally — enough to seize your home, retirement accounts, and future wages.
Umbrella policies also cover liability claims outside of auto crashes: someone injured on your property, your dog biting a neighbor, libel or slander lawsuits. If you have assets worth protecting, it’s the cheapest insurance you’ll buy relative to what it covers.
What happens when your limit isn’t enough
If a court awards damages above your coverage limit, the insurer pays up to the policy maximum and stops. The rest becomes a personal judgment against you. The injured party can:
- Garnish your wages (typically up to 25% per paycheck, depending on state law)
- Place a lien on your home or other property
- Seize bank accounts or other assets
- Pursue collection for years (judgments can last 10–20 years in many states)
Some drivers assume bankruptcy will erase the judgment. It sometimes does, but not always — and bankruptcy has its own long-term financial consequences. The simpler path: carry enough liability to cover realistic crash costs in the first place, and add an umbrella if you have assets to protect.
FAQ
Is liability insurance required by law?
Yes, in 49 states plus D.C. New Hampshire allows drivers to self-insure by posting a bond or proving financial responsibility, but you’re still liable for damages you cause. Virginia offers an uninsured motorist fee as an alternative, but you’re then personally responsible for all crash costs.
Does liability cover my own car if I cause the crash?
No. Liability only pays for damage to other people and their property. If you want your own vehicle repaired after an at-fault crash, you need collision coverage.
What’s the difference between bodily injury and property damage?
Bodily injury covers medical bills, lost wages, and pain and suffering for people you injure. Property damage covers repair or replacement of vehicles, buildings, or other property you damage. Both are part of liability coverage, but they have separate limits.
Why is my liability limit shown as three numbers?
The format is per-person / per-accident / property damage. So 50/100/50 means $50,000 bodily injury per person, $100,000 total bodily injury per accident, and $50,000 property damage. The per-person limit is the most you’ll pay to any single injured person; the per-accident limit is the total for all injuries combined in one crash.
Should I buy an umbrella policy if I already have 100/300/100 auto coverage?
If you own a home with equity, have retirement savings, or could be financially devastated by a $500,000+ judgment, yes. Umbrella coverage is cheap relative to the protection it provides — typically $150–$300/year for $1 million in excess liability. It covers not just auto liability but also homeowners liability and personal liability claims.
Liability is the foundation of auto insurance, but it’s not the whole structure. If you want to understand how much total coverage you actually need — including what protects you and your vehicle — see how-much-car-insurance-do-i-really-need. And if you’re comparing liability-only policies against full coverage packages, full-coverage-vs-liability-only breaks down the cost-versus-protection tradeoff in detail.
Not insurance or financial advice. Coverage, pricing, and state requirements vary by state and insurer. Consult a licensed agent or your state insurance department for guidance specific to your situation.