What Does 100/300/100 Mean in Car Insurance
100/300/100 is shorthand for three separate dollar limits, one per injured person, one per accident total, and one for property damage.
A rear-end crash with two hurt passengers
You're stopped at a light when someone hits you from behind. Your car has two passengers besides you, and all three of you end up with injuries serious enough to need treatment. The at-fault driver has 100/300/100. The insurer can pay up to the per-person limit for any one person's injuries, but the total paid out across everyone hurt in the crash can't exceed the per-accident limit.
If your medical bills stay well under that per-person limit, you're covered with room to spare. But if all three of you together need treatment that adds up to more than the per-accident cap, someone is short, and that gap doesn't get filled unless another policy, like underinsured motorist coverage, steps in. The property damage number is separate. If the crash also totals your car and dents a mailbox, the insurer draws from the property damage limit to cover both, not from the injury limits at all.
Is 100/300/100 enough coverage for you?
It depends on what you have to lose and how much risk you're comfortable carrying. These limits are solid, often well above what your state requires, but they're not unlimited. If you own a home, have savings, or any income that could be pursued in a lawsuit after a serious accident, a gap between your limits and a real injury claim is money that could come out of your own pocket.
Think about who's usually in your car and how often you drive in heavy traffic or at higher speeds, since that changes how bad a crash could realistically get. If you want more cushion without naming specific numbers, ask your insurer about raising these limits or adding an umbrella policy. There's no universal right answer, only what matches your exposure.
These are limits on what gets paid, not guarantees, so the real question is what happens past them.
Now that you know what 100/300/100 covers, compare quotes to see what it costs to raise those limits or match them.
Choosing whether to keep 100/300/100 or raise it
If you do
If you keep these limits, you're covered for most common accidents without paying for higher coverage you may not need. You're protected per person and per accident up to meaningful amounts. The tradeoff shows up only in rare, severe crashes with multiple serious injuries, where the per-accident cap could leave part of a claim unpaid.
If you don't
If you don't, and instead lower your limits, your premium may drop, but your cushion in a bad accident drops too. A single serious injury claim could exceed a lower per-person limit fast. You'd be personally responsible for anything beyond what your policy pays, which can mean a lawsuit against your own assets.
What happens if a claim goes over my per-accident limit?
Your insurer stops paying once the per-accident total is reached, and anyone still owed money has to look elsewhere. That could mean a lawsuit against you personally, or a claim against the injured party's own underinsured motorist coverage if they have it. Check your policy declarations page to see your exact limits, and ask your agent how often claims in your area tend to approach or exceed them. If you drive with passengers often or in dense traffic, that risk goes up, which is a reason to consider higher limits.
Does the property damage number cover my own car or just the other person's?
If you caused the accident, your property damage liability pays for the other person's car and property, not yours. Your own car is covered separately through collision coverage, if you carry it. Check whether your policy includes collision, especially if your car is financed or leased, since lenders often require it. The property damage limit in 100/300/100 only applies to what you damage belonging to someone else, which matters when comparing what you're actually protected against.
How do I know if my state requires higher or lower minimums than this?
Check your state's department of insurance website or ask your agent directly, since minimum requirements vary and change over time. 100/300/100 is generally above baseline minimums in most places, but how far above depends on where you live. If you're shopping for a policy or switching insurers, confirm the minimum first so you understand whether you're looking at a standard option or an upgraded one. This matters most if you're comparing quotes across state lines or just moved.
