When you buy car insurance, you choose limits that decide the most your insurer will pay after a crash. Those limits are written as two numbers, like 25/50 or 100/300. The first number is the per‑person limit. The second is the per‑accident limit. If you do not understand what these numbers actually mean, you can end up paying thousands of dollars out of your own pocket even though you thought you were fully covered.
The per‑person limit is the maximum amount your insurance will pay for injuries or death to one single person in a crash. Suppose you hit another driver and that driver has $60,000 in medical bills. If your policy has a 25/50 limit, the insurer will only pay $25,000 toward that person’s injuries. The remaining $35,000 comes from you. The insurance company does not care whether you have the money or not. You are personally responsible for that difference, and the other driver or their lawyer can sue you for it.
The per‑accident limit is the total your insurer will pay for all injuries combined in a single crash, no matter how many people are hurt. Using the same 25/50 example, if you hit a car with three people inside and each has $20,000 in medical bills—$60,000 total—your insurer will only pay $50,000 total. That leaves $10,000 uncovered. The insurer will split the $50,000 among the three injured people based on how their claims are negotiated, but nobody gets more than $25,000 individually. Anyone left short can still come after you personally.
These limits apply only to bodily injury liability coverage, not to property damage. Property damage has its own separate limit, usually listed as a third number such as 25/50/25. The last number is what your insurer will pay for damage you cause to someone else’s car, fence, building, or other property. That limit is a single pot for the entire accident and does not have a per‑person cap.
Why do these numbers matter so much in a lawsuit? Because when you are at fault, the injured party’s medical bills, lost wages, and pain and suffering can easily exceed your chosen limits. A common mistake is buying state‑minimum limits—often 15/30 or 25/50—because they make the premium low. That is fine if you have no assets and no income to lose. But if you own a home, have savings, or earn a decent salary, a single serious accident can wipe out everything you own if the damages go above your limits.
The per‑person and per‑accident limits also affect how your own insurance company handles settlement. If the total injuries in an accident are just under your per‑accident limit, the insurer will usually try to settle all claims for that amount and walk away. But if claims exceed the limit, the insurer may pay the policy maximum, issue a check, and then close the file. At that point any remaining unpaid bills become your personal debt. The injured parties can sue you, garnish your wages, and put liens on property you own.
Another layer of complexity arises when multiple people are injured but only one has severe injuries. Suppose one person has $100,000 in medical bills, and three others have minor injuries totaling $20,000. With a 50/100 limit, the per‑person cap is $50,000, so the severely injured person only gets $50,000 from your insurance. The other $50,000 of the $100,000 limit is split among the three minor injuries. That might cover them, but the severely injured person is left with a $50,000 gap. Again, you are on the hook.
Underinsured motorist coverage (UIM) can help protect you in this situation, but that is a different topic. The key takeaway is that the two numbers you see on your declarations page are not abstract. They represent hard dollar ceilings. Never assume that “full coverage” means unlimited protection. There is no such thing. Every policy has caps, and those caps are the per‑person and per‑accident limits.
If you are shopping for insurance, think about your net worth and your future earnings. A good rule of thumb is to carry enough liability limits to cover the value of everything you could lose in a lawsuit. Many lawyers recommend at least 100/300, sometimes more. The extra premium is small compared to the financial devastation of a judgment that exceeds your limits.
Always read your declarations page and ask your agent to explain exactly how the per‑person and per‑accident limits work in your state. Some states handle stacking or add‑on limits differently, but the fundamental concept is the same. One accident, one per‑person maximum per injured party, and one total maximum for the entire event. Know those numbers before you get behind the wheel.
