How to choose your auto liability limits

Key takeaways

• Auto liability insurance pays for others' medical bills, vehicle repairs, and legal costs when you're at fault.
• State minimums are often too low for full protection, so many drivers choose limits above the legal minimum to protect savings and future earnings.
• If damages exceed your policy limits, you are personally responsible for the remainder unless you have an umbrella policy that extends coverage.

What are auto liability limits?

Auto liability limits specify the maximum dollar amount your insurer will pay for covered losses caused by you. They are usually shown as split limits (for example, 25/50/25) or as a combined single limit. Liability covers two main areas: bodily injury to other people and property damage to others' property.

For example: If your policy has a per person bodily injury limit of $25,000, that means your insurer will pay up to $25,000 for medical expenses for any one injured person in a covered accident. If multiple people are injured, the per accident limit (the second number in split limits) caps the total payout for all injured parties. Property damage limits cover repairs to other vehicles, fences, buildings, and similar losses.

What does 25/50/25 mean?

The shorthand 25/50/25 represents split liability limits in thousands of dollars:

• The first number (25) is the per person bodily injury limit.
• The second (50) is the total bodily injury limit per accident.
• The third (25) is the property damage limit.

In practical terms, a 25/50/25 policy will pay up to $25,000 for one person's injuries, up to $50,000 total for all injured parties in the accident, and up to $25,000 for property damage. If your claim costs exceed these amounts, you're responsible for the balance.

By contrast, a combined single limit (CSL) provides one pool of liability coverage (for example, $250,000) that the insurer can use for any combination of bodily injury and property damage from a single accident. CSLs offer flexibility because the insurer isn't bound by split limit partitions.

How to choose auto liability limits

Choosing limits involves balancing protection and cost. Follow these seven steps to make an informed decision:

1. Inventory your assets and exposures: Add up your savings, home equity, retirement accounts, and future earnings you'd want to protect from a lawsuit.
2. Consider your lifestyle and risk: Drivers with long commutes, teenage drivers in the household, or high-value assets typically need higher limits.
3. Use rules of thumb, not absolutes: Many advisors suggest carrying at least $100,000 per person/$300,000 per accident ($100/300/100) or an equivalent combined single limit to reduce the risk of personal liability in severe crashes.
4. Review state minimums and legal environment: Some states have low minimums. If you live in a state with higher lawsuit frequency or medical costs, higher limits may be the wiser decision.
5. Factor in household exposure: If other household members drive higher-risk vehicles or have poor driving records, that can increase your overall liability exposure.
6. Price the options: Request quotes for multiple limit tiers (for example, 50/100/50, 100/300/100, or CSL options) to see the cost difference. Often a modest premium can buy you a large increase in protection.
7. Revisit annually and after major life changes: Marriage, new home purchase, increased income, or added drivers are reasons to reassess limits.

Common liability limit options

Insurance carriers commonly offer a range of split limits and combined single limits. Typical split limit options include:

• 25/50/25 (state minimums in many places)
• 50/100/50
• 100/300/100

Combined single limits commonly offered: $100,000; $250,000; $500,000; $1,000,000.

Higher limits are often available and can be paired with umbrella coverage for broader protection.

What happens if damages exceed my liability limits?

If a judgment, settlement, or claim exceeds your policy limits, you are personally responsible for the remainder. That can mean wage garnishment, liens against property, or depletion of savings. In some cases, your insurer will defend you in court up to the policy limit, but any judgment over the limit remains your obligation.

Because of this exposure, people with significant assets or higher-risk profiles commonly purchase umbrella insurance to provide an additional liability layer.

How does an umbrella policy fit in?

An umbrella policy provides excess liability coverage above the limits of your underlying policies (auto, homeowners, or renters). For example, if you have a $300,000 auto liability policy and a $1 million umbrella, the umbrella would respond after the $300,000 limit is exhausted and up to the umbrella limit.

Umbrella policies also typically cover some liability exposures not included in standard policies, such as certain lawsuits or broader personal liability claims. To qualify, insurers usually require minimum underlying limits (commonly $250,000–$300,000 for auto), so umbrella buyers should first raise auto liability to those levels.

FAQ

How much liability car insurance do I need?

The amount depends on your assets, income, and risk tolerance. A common recommendation is at least $100,000 per person/$300,000 per accident or an equivalent $300,000 combined single limit. Adjust higher if you have significant assets or elevated exposure.

Is 100/300 good coverage?

100/300 is often considered strong liability protection for many drivers because it covers larger medical and legal costs and is commonly the minimum qualifying limit for umbrella policies. That said, whether any limit is "good" depends on an individual's risk profile and assets. What's sufficient for one person may be inadequate for another. Consider factors like your assets, income, typical driving conditions, and potential exposure to lawsuits when deciding if 100/300 is right for you.

Does liability cover my car?

No. Liability insurance pays for others' injuries and property damage you cause. Damage to your own vehicle is covered by collision and comprehensive coverages.

Can I choose combined single limit instead of split limits?

In many states and with many insurers, yes, you can choose a combined single limit instead of split limits. A CSL offers flexibility but check state rules and compare how CSL pricing and coverage apply to your situation.

Find the right auto liability limits with Liberty Mutual

Get a car insurance quote online at Liberty Mutual to compare liability limit options and see how they affect your rate. Or call to speak with a representative: 800-290-6150.