Your auto insurance coverage limits are the dollar amounts your insurer will pay before you’re on the hook personally. Most drivers pick limits based on what their state requires or what sounds cheap, then find out too late that $25,000 doesn’t cover much when someone gets hurt.
What coverage limits actually mean
Bodily Injury Liability (BI) covers injuries to other people when you cause an accident. The limits are structured as per-person / per-accident — for example, $25,000/$50,000 means your insurer pays a maximum of $25,000 per injured person and $50,000 total per accident.
Here’s where that math bites: say you cause an accident that injures three people with medical bills of $20,000, $25,000, and $35,000. Your insurer pays $20,000 to the first person, $25,000 to the second (hitting the per-person cap), and $5,000 to the third before reaching the $50,000 per-accident limit. You are personally liable for the remaining $30,000 — creditors can garnish your wages or place liens on your assets to collect it.
Property Damage Liability (PD) covers damage to other people’s vehicles or property (fences, mailboxes, buildings). It’s a single limit per accident, typically $25,000 to $100,000. Total a parked Tesla and you’ll find out $25,000 doesn’t stretch far.
Collision and Comprehensive cover your own vehicle — collision for crashes, comprehensive for theft and weather damage. These are controlled by your deductible (what you pay out-of-pocket before coverage kicks in), not a coverage limit. A $500 deductible is standard; raising it to $1,000 lowers your premium but means you pay more after a claim.
Uninsured/Underinsured Motorist (UM/UIM) covers you when you’re hit by a driver with no insurance or limits too low to cover your damages. Many drivers are uninsured or underinsured — rates vary by state but range from roughly 10% to 15% of drivers nationwide — and those numbers likely climbed since the pandemic. UM/UIM mirrors the BI structure — per-person and per-accident limits.
State minimums are legal floors, not adequacy benchmarks
Most states set minimum liability limits somewhere between $15,000/$30,000/$5,000 (Alabama, Iowa, Wyoming) and $30,000/$60,000/$25,000 (New York, Delaware). No state meets the Insurance Institute for Highway Safety’s recommendation of $100,000/$300,000/$100,000, and for good reason — a single serious injury can result in medical bills and lost wages totaling $100,000 to well over $1 million, depending on severity and long-term care needs.
The state minimum keeps you legal. It does not keep you financially safe.
If you cause $80,000 in injuries with $50,000/$100,000 limits, your insurer pays $50,000 and you owe $30,000 out of pocket. If you cause $300,000 in injuries with the same limits, you owe $250,000. That’s not a scare tactic — it’s how the math works when your limits run out.
What higher limits actually cost
Here’s what surprised me when I was still quoting policies: the premium difference between barely-legal and genuinely-adequate limits is often surprisingly small.
In a 2024 quote for a 35-year-old Iowa driver with a clean record and a 2020 Toyota Camry, jumping from the state minimum of $25,000/$50,000/$25,000 to the IIHS-recommended $100,000/$300,000/$100,000 added roughly $100 per year — less than $9 per month. Your actual difference will vary by insurer and current market rates.
Why? Because insurers spread risk across thousands of policyholders. Most drivers never file a major liability claim, so the cost of offering higher limits is low. The bigger risk is getting stuck with a claim that exceeds your coverage and realizing you saved $100 to leave yourself exposed to a $200,000 gap.
Premium increases vary by state and insurer — Texas and Florida see bigger jumps, and some carriers price higher limits more aggressively than others. But the pattern holds: the marginal cost of adequate coverage is far lower than most people assume.
How to choose limits based on your assets
The rule I used when I was quoting policies: buy liability limits equal to one to one-and-a-half times your liquid net worth. If you have $500,000 in assets (home equity, retirement accounts, cash), buy at least $100,000/$300,000 BI limits. If you’re worth $2 million, start at $250,000/$500,000 and consider an umbrella policy for higher coverage.
Why? Because if you cause a serious accident and your limits are too low, the injured party’s lawyer will look at what you own and come after it. Wage garnishment, liens, bankruptcy — all of that is on the table when your insurance runs out.
If you’re early in your career with minimal assets, the state minimum might feel tempting. But even a $50,000 judgment can follow you for years, and the cost difference to buy $50,000/$100,000 or $100,000/$300,000 is typically small enough that going cheap doesn’t make sense.
For help estimating how much total coverage you need across all types, see more on how much car insurance do i really need? a buyer’s guide.
Coverage gaps most people don’t notice
Liability limits don’t cover your own injuries. BI and PD only pay for harm you cause to others. If you’re hurt in an accident you caused, you’re relying on your own health insurance or collision/comprehensive coverage for vehicle damage. That’s why Full Coverage vs Liability Only: When Each Makes Sense in 2025 matters — liability-only policies leave you paying out-of-pocket for your own car and medical bills.
Paid-off vehicles and the coverage drop-off. Many drivers drop collision and comprehensive once they own their car outright, figuring they’ll self-insure. That works until the car is stolen or totaled in a hailstorm and you’re out $15,000 with no claim to file. If you can’t afford to replace the vehicle, keep the coverage — just raise the deductible to $1,000 to lower the premium. More on that strategy in more on how to lower your car insurance premium: steps that work.
Rideshare and commercial exposure. If you drive for Uber or Lyft, your personal policy’s limits might not apply while you’re logged into the app. You need higher limits or a commercial endorsement to avoid gaps. See does car insurance cover rideshare drivers for the full breakdown.
FAQ
What do the three numbers in auto insurance limits mean?
The first number is bodily injury coverage per person, the second is bodily injury per accident, and the third is property damage per accident. So $50,000/$100,000/$50,000 means up to $50,000 per injured person, $100,000 total for injuries per accident, and $50,000 for property damage.
Do I have to buy coverage above my state’s minimum?
No, but the minimum is a legal floor, not a recommendation. Most state minimums are too low to cover a serious accident, and the premium difference to buy adequate limits is often less than $10 per month.
What happens if my limits are too low and I cause a big accident?
Your insurer pays up to your policy limit, and you are personally liable for the rest. The injured party can sue you, garnish your wages, or place liens on your property to collect the remaining amount.
Does raising my limits mean my premium doubles?
No. Doubling your liability limits typically raises your premium by 5% to 15%, not 100%. Insurers price higher limits at near-zero marginal cost because large claims are rare across their entire customer base.
State minimums keep you legal. Adequate limits keep you solvent. The difference in premium is smaller than most people think, and the gap when your limits run out is bigger.
Not insurance or financial advice. Coverage, rules, and pricing vary by state, insurer, and individual circumstances. Consult your insurance agent or state Department of Insurance for recommendations tailored to your situation.
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