Car insurance is a contract between you and an insurance company that pays for damage or injuries from accidents, theft, or other covered events.
You pay a monthly or annual premium. In return, the insurance company agrees to pay certain costs if you're in an accident, hit someone else's property, or face theft or weather damage. The insurance company doesn't pay for everything — your policy spells out what's covered, what isn't, and how much you pay out of pocket before they step in.
Every state except New Hampshire requires you to carry at least a minimum amount of liability insurance before you can legally drive. Liability insurance pays for injuries or property damage you cause to other people. If you have a car loan or lease, your lender will also require you to carry collision and comprehensive coverage to protect their investment in the vehicle.
Key Takeaways
- Car insurance pays for damage from accidents, theft, weather, and injuries, but only for what your specific policy covers.
- Liability insurance is required by law in almost every state and pays for injuries or damage you cause to other people.
- Collision and comprehensive coverage protect your own vehicle but are usually required only if you have a loan or lease.
- Your deductible is the amount you pay out of pocket before insurance kicks in, and choosing a higher deductible lowers your premium.
- Insurance companies use your driving record, age, location, and vehicle type to set your rate.
The two main types of coverage: liability and physical damage
Liability insurance covers injuries or property damage you cause to someone else. If you hit another car and injure the driver, liability pays their medical bills and vehicle repairs (up to your policy limit). It also covers legal costs if they sue you. This is the coverage required by law.
Physical damage coverage protects your own vehicle. It has two parts: collision covers damage from hitting another car or object, and comprehensive covers theft, weather, vandalism, and hitting an animal. If you own your car outright, these are optional. If you're financing or leasing, your lender requires them.
Most policies also include uninsured or underinsured motorist coverage, which pays for your injuries if you're hit by a driver who has no insurance or not enough insurance. This coverage is required in many states.
How deductibles and premiums work together
Your deductible is the amount you agree to pay toward a claim before your insurance company pays the rest. Common deductibles are $250, $500, $1,000, or higher. If you choose a $500 deductible and file a $3,000 claim, you pay $500 and insurance pays $2,500.
Choosing a higher deductible lowers your monthly premium because you're taking on more of the risk yourself. Choosing a lower deductible raises your premium. The trade-off is real: a $1,000 deductible might save you $30 a month, but it means you'll pay more out of pocket if you have an accident.
Your premium is what you pay for coverage, usually monthly or annually. Insurance companies calculate premiums based on your age, driving record, location, the vehicle you drive, the coverage limits you choose, and your deductible. A clean driving record and a safe vehicle lower your premium. An accident or traffic violation raises it.
Policy limits: what you're actually covered for
Every coverage type has a limit — the maximum amount the insurance company will pay. Liability limits are written as three numbers, like 25/50/25, which means $25,000 per person for injuries, $50,000 total per accident for injuries, and $25,000 for property damage. If you cause an accident that injures three people and each injury costs $30,000 to treat, your insurance pays only $25,000 per person, and you're responsible for the rest.
Collision and comprehensive also have limits, usually tied to your vehicle's actual cash value. If your car is worth $10,000 and you total it, insurance pays up to $10,000 minus your deductible, regardless of what you owe on the loan.
Most people carry limits that match their state's minimum requirement, but that minimum is often not enough to cover a serious accident. If you have savings or own a home, carrying higher limits protects those assets if you're sued.
What insurance does not cover
Car insurance does not cover routine maintenance, wear and tear, or damage from poor upkeep. It does not cover damage from racing or using your car for commercial purposes if you have a personal policy. It does not cover injuries to you or your passengers from a medical condition unrelated to the accident.
If you cause an accident while driving under the influence, your insurance may deny the claim entirely or charge you a higher rate. Some policies exclude coverage for rideshare driving (like Uber or Lyft) unless you have a rideshare endorsement.
Damage from flooding is sometimes excluded from standard comprehensive coverage, depending on your state and insurer. If you live in a flood-prone area, you may need a separate flood insurance policy.
How to file a claim
After an accident, contact your insurance company as soon as possible. Have your policy number, the other driver's information (if applicable), photos of the damage, and a description of what happened. The insurance company will assign an adjuster to inspect the vehicle and estimate repair costs.
You can choose your own repair shop or use one the insurance company recommends. The adjuster's estimate determines how much the insurance company will pay. If you disagree with the estimate, you can request a second opinion or hire an independent appraiser, though you may have to pay for that yourself.
Once the claim is approved, the insurance company pays the repair shop directly, or they pay you and you handle repairs. The timeline varies, but most claims are resolved within a few weeks.
Why rates change and how to lower yours
Insurance companies review your rate every six to twelve months. An accident or traffic violation will raise your rate, sometimes significantly. A clean driving record for three to five years can lower it. Some companies offer discounts for bundling home and auto insurance, completing a defensive driving course, having safety features on your vehicle, or paying your premium in full upfront instead of monthly.
Shopping around every year or two is one of the most effective ways to lower your rate. Different companies price risk differently, so the cheapest option for you may not be the cheapest for your neighbor. Getting quotes from at least three companies takes an hour and can save hundreds of dollars a year.
If you're a young driver or have a poor driving record, some companies specialize in higher-risk drivers and may offer better rates than mainstream insurers. Usage-based insurance programs, which track your driving habits through an app, can also lower rates if you drive safely.
Frequently Asked Questions
Do I have to buy insurance from my state's assigned risk pool?
No. An assigned risk pool (also called a residual market) is a last resort for drivers who can't find coverage in the regular market. You should shop private insurers first. If you're denied by multiple companies, your state's insurance department can tell you how to access the assigned risk pool.
What happens if I let my insurance lapse?
Driving without insurance is illegal in every state except New Hampshire. If you're caught, you face fines, license suspension, and potential jail time. If you cause an accident while uninsured, you're personally liable for all damages. When you buy insurance again after a lapse, rates are typically higher.
Can I insure a car I don't own?
You need an insurable interest in the vehicle — usually you own it, are financing it, or are leasing it. You cannot insure someone else's car just to drive it occasionally. If you borrow a car frequently, the owner's insurance usually covers you, but check their policy first.
Does my insurance cover me if I'm driving someone else's car?
Usually yes, if you have permission. Most policies extend coverage to other drivers using your vehicle with your consent. However, if you regularly borrow the same car, the owner should add you as a named driver to their policy. If you're a rideshare driver, you need a rideshare endorsement because personal policies exclude commercial use.
What's the difference between actual cash value and agreed value?
Actual cash value is what your car is worth on the used market right now, minus depreciation. Agreed value is an amount you and the insurance company decide on in advance, usually for classic or specialty cars. Agreed value protects you if the car is totaled, because you get the agreed amount regardless of market conditions.