Skip to main content
Insurance Coverage Hub

Auto Coverage Gap Analyzer

Analyze gaps in your auto insurance against operator-grade benchmarks: Bodily Injury (BI) / Property Damage (PD) / Uninsured & Underinsured Motorist (UM/UIM) limits vs net-worth tier, comprehensive + collision drop-decision math, umbrella-prerequisite check. Cited to ISO (Insurance Services Office) Personal Auto Policy form, NAIC (National Association of Insurance Commissioners) Auto Insurance Database Report, Insurance Research Council.

Current liability limits ($ thousands)

Values in thousands. E.g., 100 = $100K. Standard format on declarations: Bodily Injury per-person / Bodily Injury per-accident / Property Damage. PIP = Personal Injury Protection (used in no-fault states instead of Med Pay).

Household profile
Primary vehicle (for comp/collision drop math)
Overall coverage status
red

Liability tier: moderate · Net annual cost of recommended remediations: +$118/yr

Bodily injury — per-personred
$100K / need $250K
Bodily injury — per-accidentred
$300K / need $500K
Property damagegreen
$100K / need $100K
Uninsured/underinsured motoristred
$100K / need $250K
Comprehensive / collisiongreen
keep collision · ratio 3.2% (premium / actual cash value)
Umbrella prerequisitesgreen
2 gaps
Prioritized remediation plan
  1. Priority 1 · BI

    Raise BI per-person from $100K to $250K. Defense costs alone on a serious bodily-injury claim can exceed $100K before damages.

    +$38/yr
  2. Priority 1 · BI

    Raise BI per-accident from $300K to $500K.

    +$50/yr
  3. Priority 1 · UM/UIM

    UM/UIM ($100K) is below the recommended $250K. Match underlying BI per-accident as the operator-grade default. Cost delta is typically $50–$120/year.

    +$30/yr
Comp/collision math detail

Annual collision premium is 3.2% of ACV. Below the 5% threshold — keep collision.

Advertisement

View the TypeScript implementation on GitHub: packages/calc/src/auto-coverage-gap.ts · view tests

What this means

Every state mandates minimum liability limits, expressed as BI-per-person / BI-per-accident / PD (e.g., 25/50/25 = $25K BI per person / $50K per accident / $25K property damage). State minimums are almost universally inadequate — average serious-accident bodily-injury claims meaningfully exceed every state's minimum, and the gap leaves the at-fault driver personally liable.

The seven gap categories above flag the same kind of problem the homeowners gap analyzer flags: each part of the policy can be materially under-sized relative to the household's actual exposure, and most under-sizing is invisible until a claim comes in. Match BI to your net-worth tier. Match UM/UIM to BI. Drop collision when the math says drop. Confirm umbrella prerequisites before assuming the umbrella will pay.

Worked example

A household with $350K net worth, $125K income, two vehicles, no teen driver, $25K primary vehicle ACV, and current limits of 100/300/100 + 100 UM gets: BI per-person red (need 250 for moderate tier), BI per-accident yellow (current 300 vs need 500), PD green, UM red (need 250 to match BI per-accident). Comp/collision ratio at $800/$25K = 3.2% → keep. Umbrella prerequisite not met (BI per-accident 300 vs $500K minimum). Recommended priority: raise BI to 250/500 + match UM to 250. Estimated annual cost: ~$120/year.

Advertisement

Frequently asked questions

See the auto-insurance methodology — ISO PAP form structure, state minimums context, UM/UIM tiering, comp/collision drop-decision framework with primary-source citations.

By Last updated

Founder & Editor, Bedrocka Tools

The information and tools on this website are for general educational purposes only and do not constitute financial, investment, legal, or tax advice. Consult a licensed professional for decisions specific to your situation.