Understanding the 100‑300‑100 Coverage Rule in Auto Insurance

What Is the 100‑300‑100 Rule?

The 100‑300‑100 rule is a common framework in the U.S. that outlines the minimum liability limits drivers are required to carry. It breaks down into three categories: bodily injury per person, bodily injury per accident, and property damage per accident.

Bodily Injury Per Person (100)

Insurers must cover up to $100,000 for injuries to a single person caused by the policyholder's fault.

Bodily Injury Per Accident (300)

The total bodily injury liability for all people injured in a single accident cannot exceed $300,000.

Property Damage Per Accident (100)

Coverage for damage to other vehicles or property is capped at $100,000 per incident.

Why the Rule Matters

These limits protect insurers and help keep premiums affordable. They also provide a baseline safety net for victims. However, the minimum limits often fall short when a serious accident occurs.

When the Limits Fall Short

If the cost of medical bills, lost wages, or property repairs exceeds the insured's limits, the policyholder may face out‑of‑pocket expenses or be sued for the shortfall. Many drivers opt for higher limits—$250,000/$500,000 per person or $500,000 per accident—to reduce this risk.

Choosing the Right Coverage

Consider the following factors when selecting limits:

• Vehicle value and replacement cost
• Personal assets and credit risk
• Typical traffic patterns and accident likelihood
• State minimum requirements (some states allow higher minimums)

How to File a Claim Under 100‑300‑100

1. Report the incident to your insurer promptly.2. Provide documentation of the accident, injuries, and damages.3. The insurer will assess liability and determine if the claim falls within the coverage limits.4. If the claim exceeds limits, the insurer will pay up to the cap; any excess may be pursued through legal action.

State Variations

While the 100‑300‑100 framework is common, states like California and New York have higher minimums. Check your state's regulations to ensure compliance.

Bottom Line

The 100‑300‑100 rule sets essential minimum liability coverage for drivers. Understanding these limits helps you assess whether additional coverage is necessary to protect your financial well‑being after an accident.