What Bodily Injury Limits Mean
Bodily injury (BI) limits are the maximum amounts an auto insurer will pay for injuries you cause to another driver, passenger, or pedestrian. The limits are expressed as two numbers: the per‑person limit and the per‑accident aggregate. For example, a 25/50 policy pays up to $25,000 for each injured person and up to $50,000 total for all injuries in a single accident.
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Why the Two‑Number Structure Exists
The per‑person limit ensures that each victim receives a baseline payout, while the aggregate cap protects insurers from unlimited liability when multiple people are hurt. If an accident injures three people and each claim exceeds the per‑person limit, the insurer will pay the per‑person maximum for each, but the total cannot exceed the aggregate ceiling. When the aggregate is reached, any remaining claims may be unpaid unless you have additional coverage.
Choosing Appropriate Limits
Selecting limits involves balancing risk tolerance, asset protection, and state minimum requirements. Higher limits reduce the chance that you'll be sued for amounts beyond your policy, especially if you own a home, savings, or other valuable assets. Many financial advisors recommend at least 100/300 coverage—$100,000 per person and $300,000 per accident—for typical drivers, though affluent individuals often opt for 250/500 or higher.
State Minimums vs. Recommended Coverage
Every state mandates a minimum BI limit, but these floors are often far below what medical costs can reach after a serious crash. For instance, a single severe injury can quickly exceed $50,000 in hospital bills, surgery, rehabilitation, and lost wages. Relying on minimums may leave you liable for the difference, potentially exposing personal assets to collection actions.
Impact of Underinsuring
If your BI limits are too low, you may face three major consequences: (1) out‑of‑pocket medical bills for the injured parties, (2) legal judgments against you that can lead to wage garnishment or liens, and (3) a higher premium on future policies as insurers view you as a higher risk. Some states allow uninsured/underinsured motorist (UM/UIM) coverage to step in, but that protection only applies when the at‑fault driver lacks sufficient coverage.
How Limits Affect Premiums
Premiums rise with higher limits because insurers assume more risk. The increase isn't linear; moving from 25/50 to 50/100 typically adds a modest percentage, while jumping to 250/500 can raise the premium substantially. Many carriers offer discounts—such as safe‑driver, multi‑policy, or usage‑based discounts—that can offset part of the cost.
Comparing Common Limit Options
| Limit Option | Per‑Person | Per‑Accident | Typical Use Case |
|---|---|---|---|
| Minimum (varies) | $10,000‑$25,000 | $20,000‑$50,000 | State‑required baseline, low‑cost drivers |
| 25/50 | $25,000 | $50,000 | Budget‑conscious drivers, low‑risk profiles |
| 50/100 | $50,000 | $100,000 | Average drivers, moderate asset protection |
| 100/300 | $100,000 | $300,000 | Recommended for most households, stronger asset shield |
| 250/500+ | $250,000+ | $500,000+ | High‑net‑worth individuals, professional drivers |
When to Consider Supplemental Coverage
Beyond the standard BI limits, you can add umbrella policies, which provide excess liability coverage once your auto limits are exhausted. An umbrella policy typically starts at $1 million and can protect against lawsuits, property damage, and even certain non‑auto claims. For drivers with significant assets, combining high BI limits with an umbrella policy offers a robust safety net.
Key Takeaways
- BI limits are expressed as per‑person/aggregate amounts (e.g., 25/50).
- Higher limits protect personal assets but increase premiums.
- State minimums often fall short of real medical costs.
- Consider 100/300 as a baseline; increase for higher net worth.
- Umbrella policies add extra protection once auto limits are maxed out.