5.2 Part A: Liability Coverage

Key Takeaways

  • Part A provides third-party coverage for bodily injury (BI) and property damage (PD) the insured is legally liable for, and includes the insurer's duty to defend
  • Limits are written as split limits (e.g., 100/300/100) or as a Combined Single Limit (CSL); the split format is per-person BI / per-accident BI / per-accident PD
  • Supplementary payments — defense costs, up to $250 bail bonds, post-judgment interest, and up to $200/day for lost earnings to attend trial — are paid IN ADDITION to the limit
  • The duty to defend ends once the insurer pays the limit of liability through a settlement or judgment
  • State minimum limits are low and vary widely (Florida is among the lowest, Alaska's 50/100/25 is the highest minimum), and minimums are usually inadequate for serious claims
Last updated: June 2026

What Part A Covers

Part A — Liability Coverage is the heart of the PAP and the coverage states make mandatory. It is third-party coverage: it pays others when an insured is legally liable for an auto accident. Two damage categories apply:

CoveragePays for
Bodily Injury (BI)Others' medical bills, lost wages, pain and suffering, and death claims
Property Damage (PD)Damage to others' property — vehicles, buildings, fences, light poles

Part A combines both into a single insuring agreement and adds the insurer's duty to defend the insured against covered suits.

How Limits Are Written

Split Limits

The classic format is three numbers — BI per person / BI per accident / PD per accident. Read 100/300/100 as:

  • $100,000 maximum BI to any one person
  • $300,000 maximum BI for all persons in one accident
  • $100,000 maximum PD in one accident

Worked example. You cause an accident, are at fault, and four people are injured. Limits are 100/300/100.

ClaimantProven BIPart A paysUncovered gap
Person 1$150,000$100,000 (per-person cap)$50,000
Person 2$80,000$80,000$0
Person 3$90,000$90,000$0
Person 4$50,000$30,000 (only $30K of the $300K remains)$20,000
Total BI$370,000$300,000$70,000

No one person can collect more than $100,000, and all BI together is capped at $300,000. PD has its own separate $100,000 limit and is not reduced by BI payments.

Combined Single Limit (CSL)

A CSL — say $500,000 — is one pool covering any mix of BI and PD with no per-person sub-limit. With a $500,000 CSL, a single badly injured claimant could collect the full $500,000.

FeatureSplit LimitsCSL
Written as100/300/100$500,000
Per-person BI capYesNo
Separate PD potYesNo
FlexibilityLowerHigher

Supplementary Payments — Paid in Addition

Part A also pays certain costs on top of the limit of liability:

Supplementary paymentDetail
Defense costsAttorney fees, expert witnesses, court costs
Bail bondsUp to $250 per bond from a covered accident
Appeal/attachment bondsPremium for bonds (insurer need not apply for them)
Post-judgment interestInterest accruing after a judgment
Lost earnings to attend trialUp to $200 per day at the insurer's request
Other reasonable expensesIncurred at the insurer's request

Defense example: limit $100,000; settlement $100,000; defense costs $30,000 — the insurer pays $130,000 total because defense is supplementary.

Duty to Defend

The insurer has the duty to defend any suit seeking covered damages — even a groundless or fraudulent suit — and may settle a claim as it sees fit. Crucially, the duty to defend ends when the insurer has paid the limit of liability through a settlement or judgment. After that, the insured pays his own defense.

State Minimum Limits

StateMinimum BI/BI/PDNote
California30/60/15 (effective 2025)Recently raised from 15/30/5
Florida10/20/10**PD plus PIP; among the lowest
Texas30/60/25The familiar "30/60/25"
New York25/50/10Moderate
Alaska50/100/25Highest minimum

Exam point: state minimums are a floor, not a recommendation. A single severe-injury claim can exceed $100,000, so producers should counsel limits well above the minimum.

Part A Exclusions (Highlights)

Part A does not cover intentional injury, damage to property the insured owns or is in the insured's care, bodily injury to an employee (workers' compensation responds), vehicles used as a public or livery conveyance (with a share-the-expense carpool exception), regular business use of non-covered vehicles, racing on a track, and vehicles with fewer than four wheels.

Who Is an Insured Under Part A

Part A's definition of insured is broader than many candidates expect. It includes "you" and any family member for the ownership, maintenance, or use of any auto or trailer; any person using your covered auto with permission; any person or organization legally responsible for acts of an insured while using your covered auto (vicarious liability); and any person or organization legally responsible for the named insured's or a family member's use of a non-owned vehicle (other than the owner of that vehicle).

This is why an employer can be an additional insured when an employee uses the insured's covered auto on company business — and why the policy must coordinate carefully with commercial coverage.

How Part A Pays a Third Party

Part A does not pay the insured directly; it pays the injured third party (or defends and indemnifies the insured against that party's claim). A typical claim sequence: the third party demands damages, the insurer investigates, accepts the duty to defend, negotiates a settlement within the limit, and pays the claimant. If the case proceeds to trial and a verdict exceeds the limit, the insurer pays its limit and any covered supplementary payments, and the insured is personally exposed for the excess — a powerful argument for buying higher limits or a personal umbrella policy.

Out-of-State Coverage and Financial Responsibility

The PAP contains an out-of-state coverage provision: when an insured drives into a state that requires higher liability limits or a compulsory coverage the insured did not buy (such as no-fault PIP), the policy automatically adjusts to provide at least the minimum required by that state. This keeps the insured legal while traveling and is a tested nuance — the policy effectively reads in the other state's compulsory minimums so the insured is never short on the road.

Limit Selection in Practice

Insured profileReasonable Part A limitRationale
New driver, minimal assetsState minimum to 50/100/50Affordability while building a record
Typical household, some assets100/300/100Common "100/300" baseline
Higher net worth250/500/100 + umbrellaProtects assets from large judgments

Practical note: liability limits should reflect the assets a judgment could reach, not the value of the car. A driver with a paid-off old vehicle but a home and savings still needs substantial Part A limits, because Part A protects net worth, not the auto.

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Part A Liability Coverage Structure
State Minimum Liability Limits (Total in $1000s)
Test Your Knowledge

An auto policy has limits of 50/100/50. What is the maximum Part A will pay for bodily injury to ONE person?

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Test Your Knowledge

An insured with a $100,000 Part A limit is sued. The insurer pays a $100,000 judgment and incurs $30,000 in defense costs. How much does the insurer pay in total?

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B
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D
Test Your Knowledge

Under Part A supplementary payments, the PAP pays bail bonds up to what amount?

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Test Your Knowledge

When does the insurer's duty to defend under Part A end?

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D