How much auto insurance do I need? The 2026 coverage guide

State minimum coverage requirements: the legal floor, not the right answer

Every state except New Hampshire (and Virginia until 2024) requires drivers to carry a minimum level of auto insurance to legally operate a vehicle. But state minimums are designed to protect other drivers from you — not to protect you or your vehicle. Per the Insurance Information Institute 2024 Annual Report: the most common state minimum is 25/50/25, meaning $25,000 bodily injury per person, $50,000 bodily injury per accident, and $25,000 property damage per accident. California's legacy minimum was 15/30/5 — in 2025, California raised minimums to 30/60/15 effective January 1, 2025. New Jersey, Florida, and New Hampshire have unique no-fault or self-insurance frameworks.

The problem with driving at state minimums: a serious accident can easily generate $300,000–$500,000 in medical bills for a severely injured victim. A driver at 25/50/25 limits is personally liable for anything above the policy limits — meaning their savings, home equity, and future wages can be attached in a lawsuit judgment. Per the NAIC State Premium Report: nearly 13% of all drivers nationally are uninsured. In Florida, that rate is approximately 20.4%; in Mississippi, approximately 29.4%. Uninsured motorist coverage (UM/UIM) protects you when you are hit by one of those drivers — it is not required in all states but is one of the highest-value coverages per dollar of premium.

Source: NAIC State Premium Report 2024; III Annual Report 2024. Average premium figures are for full coverage including collision and comprehensive.

The 100/300/100 benchmark: why III and Consumer Reports recommend it

The 100/300/100 liability benchmark — $100,000 bodily injury per person, $300,000 per accident, $100,000 property damage — is recommended by the Insurance Information Institute, Consumer Reports, and most independent financial planners as the minimum adequate liability coverage for drivers with significant assets (home equity, retirement savings, future wages). The reasoning:

• Medical costs for a serious injury easily exceed $100,000.A single hospitalization for a severe accident victim can generate $150,000–$400,000 in bills. At 25/50/25 limits, you pay the difference out of pocket if the victim successfully sues.
• Property damage limits must cover luxury vehicles. At 25/50/25, a $25,000 property damage limit would not cover a total-loss claim on a $55,000 truck or SUV. At 100/300/100, the $100,000 property damage limit covers nearly any production vehicle.
• The premium difference is modest.Per the Insurance Information Institute: upgrading from 25/50/25 to 100/300/100 liability limits typically costs $100–$200/yr additional premium — far less than the exposure difference.
• Umbrella policies extend from here.A personal umbrella policy ($1M–$5M of additional liability coverage) typically requires you to carry at least 100/300/100 underlying auto limits. Umbrella policies cost $150–$300/yr for the first $1M — one of the most cost-effective forms of asset protection available.

When to drop collision and comprehensive: the 10% rule

The decision to drop collision and comprehensive from an older vehicle follows a straightforward financial framework. If the annual premium for collision and comprehensive coverage exceeds 10% of the vehicle's current market value, the coverage is likely not cost-effective.

10% threshold calculation:

Vehicle market value (KBB Private Party): $8,000
Deductible: $500
Maximum payout after deductible: $7,500

Annual collision + comprehensive premium: $720
Threshold (10% of $8,000): $800

$720 < $800 → coverage is borderline cost-effective
Consider dropping if you can self-insure the $7,500 replacement cost.

Annual collision + comprehensive premium: $950
Threshold (10% of $8,000): $800

$950 > $800 → coverage is not cost-effective
Self-insuring is likely the better choice.

Two important exceptions: (1) if you cannot afford to replace or repair the vehicle out of pocket if it is totaled, collision and comprehensive are worth keeping regardless of the 10% threshold; and (2) if you live in a high-theft-risk area (some urban ZIP codes have comprehensive loss rates 3–5× the national average), comprehensive coverage may be worth keeping even at premiums above the 10% threshold. Always verify with your specific vehicle's current market value using KBB, Edmunds, or Carmax Trade-In Offer — and remember that if the vehicle is financed or leased, your lender or lessor requires full coverage regardless of this framework.

Gap insurance: when you owe more than your car is worth

Gap insurance (Guaranteed Asset Protection) covers the difference between what your vehicle is worth at the time of a total loss and what you still owe on your auto loan or lease. This gap emerges because vehicles depreciate faster than loan balances pay down, especially in the first 18–36 months of a loan or lease.

Per the CFPB auto loan research team: gap claims are most common in the first 36 months of a loan and on vehicles with front-loaded depreciation — luxury vehicles, some EVs, and any vehicle financed with less than 20% down on a term longer than 60 months. The CFPB notes that consumers who purchase gap insurance through a dealer typically pay $400–$900 as a lump-sum upfront charge; the same coverage through an auto insurer typically costs $20–$40/yr added to a comprehensive policy. Per the CFPB: buying gap coverage through your auto insurer is almost always cheaper than through the dealer — and the insurer's gap coverage typically continues if you refinance, while dealer-purchased gap coverage may not transfer.

Gap insurance is typically needed when: you made less than 20% down payment on a new vehicle; your loan term is 60 months or longer; you rolled negative equity from a previous vehicle into your new loan; or you are leasing a vehicle (many lease agreements include gap automatically from the captive finance company — verify your specific lease contract before purchasing separate gap coverage).

The right coverage by vehicle age and loan status

How much premiums vary by state: NAIC tier breakdown

Auto insurance premiums vary by a factor of 4× between the lowest-cost and highest-cost states per NAIC 2024 data. The drivers of state-level variation are litigation environment, weather risk, traffic density, and uninsured motorist rates — not the minimum coverage requirements. Per the NAIC State Premium Report: the five most expensive states for full coverage (Louisiana $4,003, Florida $3,183, Nevada $2,779, New Jersey $2,693, Michigan $2,693) share high litigation costs and significant uninsured motorist exposure. The five least expensive states (Vermont $879, Ohio $1,028, Idaho $1,109, Maine $1,121, New Hampshire $1,153) share low traffic density and favorable litigation environments.

Importantly, the NAIC state cost index is not solely a function of minimum coverage requirements — it reflects all the actuarial factors that drive claims in that state. A driver moving from Vermont to Florida with the same vehicle, driving record, and coverage tier would see their premium increase by approximately $2,300/yr based on NAIC averages alone. Your garaging state is the single largest geographic variable in premium estimation.