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.
Liability tier: moderate · Net annual cost of recommended remediations: +$118/yr
- Priority 1 · BI+$38/yr
Raise BI per-person from $100K to $250K. Defense costs alone on a serious bodily-injury claim can exceed $100K before damages.
- Priority 1 · BI+$50/yr
Raise BI per-accident from $300K to $500K.
- Priority 1 · UM/UIM+$30/yr
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.
Comp/collision math detail
Annual collision premium is 3.2% of ACV. Below the 5% threshold — keep collision.
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.
Frequently asked questions
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.