Auto Insurance
Break down how U.S. car insurance is built before you look at any policy paperwork.
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What car insurance is for
An auto policy is a contract that may pay certain injury, property, and vehicle-damage costs based on the coverages you choose. Almost every U.S. state requires liability insurance or an approved substitute; New Hampshire is the notable exception but still has financial-responsibility rules after qualifying accidents. Check your state insurance department for current rules.
Common coverage parts
Personal auto policies usually combine liability with optional physical-damage and injury coverages.
- Bodily injury and property damage liability
- Collision and comprehensive (usually with deductibles)
- Uninsured / underinsured motorist coverage
- Medical payments or personal injury protection, where available
How deductibles fit in
Collision and comprehensive deductibles are what you typically pay toward a covered vehicle claim. Liability claims usually do not use that same deductible. Raising the deductible may lower the premium while increasing what you pay after a loss.
What can move the premium
Carriers may look at driving history, vehicle, garaging ZIP, limits, deductibles, mileage, and other factors the law allows. Some states limit or ban credit-based insurance scores. No public calculator can recreate an insurer’s full rating engine.
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Frequently asked questions
Does this site sell auto insurance?
No. Averainsure publishes educational explainers and illustrative calculators. We are not an insurer, agent, or broker.
Why do state minimums differ?
Each state writes its own financial-responsibility laws. Limits that satisfy the statute can still be low relative to a serious injury claim.