In this guide

Car insurance is a contract between you and an insurance company. You pay a regular price, called a premium. In return, the insurer agrees to pay for certain losses, such as damage or injuries you cause to others or damage to your own car, up to the limits in your policy. Below we cover the moving parts: premiums, coverages, limits, deductibles, claims, and the state rules that shape all of it.

Key takeaways

  • You pay a premium, and the insurer pays for covered losses up to your policy limits.
  • A policy is a bundle of separate coverages, and each one has its own limit and sometimes its own deductible.
  • Liability coverage pays for harm you cause to others. Collision and comprehensive pay for damage to your own car.
  • Rules vary a lot by state, including whether insurance is required and whether the state uses a no-fault system.
  • Your declarations page is a one-page summary of what you bought. It's worth reading.

The basic deal

Insurance works by spreading risk. Many drivers pay premiums into a pool, and the insurer uses that money to pay the claims of the few drivers who have a covered loss in a given period. Most people never have a large claim in a given year. Insurance protects you in the year you do.

In exchange for your premium, the insurer promises to pay for specific types of losses. That promise has boundaries. It applies only to the coverages you bought, only up to the dollar limits you chose, and only for events the policy doesn't exclude.

A car insurance policy usually runs for a set term, often six or 12 months. At the end of the term the insurer may offer to renew, sometimes at a different price.

What's inside a policy

A car insurance policy isn't one single thing. It's a package of separate coverages. According to the Insurance Information Institute (Triple-I), most basic policies are built from six common types of coverage:

  • Bodily injury liability – pays for injuries you cause to other people.
  • Property damage liability – pays for damage you cause to other people's property, like their car or a fence.
  • Collision – pays to repair your own car after a crash with a vehicle or object.
  • Comprehensive – pays for theft and non-crash damage, such as fire, hail, vandalism, or hitting a deer.
  • Uninsured/underinsured motorist – pays you when a driver with no insurance, or too little, hits you.
  • Medical payments or personal injury protection (PIP) – pays medical costs for you and your passengers.

We explain each of these in detail in our guide to car insurance coverage types.

Your declarations page

The declarations page (often called the "dec page") is the summary at the front of your policy. The National Association of Insurance Commissioners (NAIC) notes that it typically shows your policy number and dates, the vehicles covered, where they're garaged, the coverages and limits you chose, your deductibles, your premium, and any discounts that apply. If you have a car loan, the lender is usually listed too.

It's a good idea to check this page when you first buy a policy and at each renewal. Errors in things like your address or vehicle details can affect your price and may cause problems with a claim.

Premiums: what you pay

Your premium is the price of your policy. You may pay it all at once or in installments, depending on what your insurer offers.

Insurers set premiums by estimating how likely you are to file a claim and how expensive that claim could be. Triple-I lists common rating factors, including:

  • Your driving record and claims history
  • Where you live and park the car
  • How much you drive and what you use the car for
  • Your age and driving experience
  • The car itself, including its value, repair costs, and safety record
  • In many states, a credit-based insurance score
  • The coverages, limits, and deductibles you choose

Not every company uses the same factors or weighs them the same way, and some states restrict certain factors. That's one reason prices for the same driver can differ a lot from one insurer to the next. Our guide on practical ways to lower your car insurance premium covers the factors you can influence.

Limits: the most your insurer will pay

Every coverage has a limit, which is the maximum the insurer will pay for a covered loss. If a loss costs more than your limit, you may be responsible for the rest.

Liability limits are often written as three numbers separated by slashes, called split limits. Texas offers a useful example. The Texas Department of Insurance explains that the state's minimum is 30/60/25, which means:

  • $30,000 for injuries to one person
  • $60,000 total for injuries per accident
  • $25,000 for property damage per accident

Minimum limits are different in every state, and the Texas department warns that minimums may not be enough for a serious multi-car accident. Triple-I also suggests considering more than the state minimum if you have assets, like a home or savings, to protect. You can see how requirements differ in our overview of minimum car insurance requirements by state.

Deductibles: your share of a claim

A deductible is the amount you pay out of pocket on a claim before your insurance pays the rest. Deductibles usually apply to coverages that protect your own car, like collision and comprehensive. In some states they can also apply to other coverages, such as uninsured motorist property damage.

Here's how it works, using an example from the Texas Department of Insurance: if you have a $500 collision deductible and $1,500 in covered damage, the insurer pays $1,000 and you pay the first $500.

Liability coverage generally doesn't have a deductible for you, because it pays other people. And if another driver is at fault and you file with their insurer, you typically don't pay your own deductible.

Good to know: Choosing a higher deductible usually lowers your premium, but only choose an amount you could actually pay on short notice after an accident.

How a claim works

A claim is your request for the insurer to pay for a covered loss. The exact process varies by company and state, but it usually follows these steps:

  1. Make sure everyone is safe. Call 911 if anyone is hurt. Follow your state's rules about reporting crashes to police.
  2. Collect information. Get the other driver's name, contact details, insurance information, and plate number. Take photos and note any witnesses.
  3. Report the claim promptly. Contact your insurer, or the other driver's insurer if they caused the crash. Most policies require prompt notice.
  4. Work with the adjuster. An adjuster reviews the damage, the facts, and your coverage to decide what the policy pays.
  5. Get paid or get repairs. The insurer pays for covered repairs or, if the car is totaled, typically pays its actual cash value, minus your deductible where one applies.

Actual cash value means what the car was worth just before the loss, accounting for depreciation. It's not what you paid for the car, and it may be less than what you still owe on a loan.

Watch out: If you owe more on your loan than your car is worth, a standard policy won't pay off the difference after a total loss. The NAIC notes that separate gap insurance is designed to cover that gap.

At-fault vs. no-fault states

Who pays after a crash depends partly on your state's system.

At-fault (tort) states

In most states, the driver who caused the accident is responsible for the damage. Injured people usually file a claim against the at-fault driver's liability coverage, or they may sue.

No-fault states

According to Triple-I, 12 states and Puerto Rico have no-fault auto insurance laws. In these states, your own insurer pays your medical costs and certain other losses, like lost wages, through personal injury protection (PIP), no matter who caused the crash. The right to sue the other driver for injuries is limited unless the injury meets a threshold set by state law.

Triple-I lists the no-fault states as Florida, Hawaii, Kansas, Kentucky, Massachusetts, Michigan, Minnesota, New Jersey, New York, North Dakota, Pennsylvania, and Utah. Three of them (Kentucky, New Jersey, and Pennsylvania) are "choice" states, where drivers can choose a no-fault policy or a traditional one.

No-fault rules usually cover injuries only. Damage to vehicles is still generally handled based on who was at fault.

Tip: State laws change. As of 2026, check your state insurance department's website for the current rules where you live.

Is car insurance required?

In nearly every state, yes. Triple-I notes that virtually all states require drivers to carry liability insurance, and some also require uninsured motorist coverage or PIP.

New Hampshire is the main exception. It doesn't have a compulsory liability insurance law, but drivers must still be able to show they can pay for an accident they cause. Virginia used to let drivers pay a fee to register an uninsured vehicle. The Virginia DMV says that option ended on July 1, 2024, so drivers there now need a policy that meets the state's liability minimums.

Even where coverage is required, the law usually only requires liability, and sometimes PIP or uninsured motorist coverage. Collision and comprehensive aren't required by state law, but a lender or leasing company will usually require them. We compare these options in full coverage vs. liability-only car insurance.

Keeping your policy up to date

Your policy is priced based on the information you give the insurer. If something changes, your coverage or price may need to change too. Tell your insurer when you:

  • Buy, sell, or replace a car
  • Move to a new address
  • Add or remove a driver, such as a new teen driver
  • Start driving a lot more or a lot less
  • Pay off a car loan, so the lender can be removed from the policy

Renewal time is also a good moment to compare quotes from several insurers. Prices vary between companies, and the NAIC suggests weighing service and financial strength along with price.

Frequently asked questions

Does my car insurance cover other people who drive my car?

Often, yes, if they have your permission, but it depends on your policy and your state. Some policies limit or exclude certain drivers, such as people who live with you but aren't listed. Read your policy or ask your insurer.

Does my insurance cover me if I drive someone else's car?

Triple-I notes that bodily injury liability generally covers you and listed family members when driving someone else's car with permission. The car owner's insurance is often expected to pay first, but rules vary by policy and state.

What's the difference between a premium and a deductible?

The premium is what you pay to keep the policy in force. The deductible is what you pay out of pocket when you file certain claims, before the insurer pays the rest.

Will filing a claim raise my rates?

It can. Insurers often consider your claims history, especially at-fault accidents, when setting your price. How much and for how long depends on the insurer and your state.

Who can help if I have a problem with my insurer?

Start with your insurer's customer service or claims department. If that doesn't resolve it, your state insurance department can answer questions and accept complaints. A licensed agent can also explain your options.

Sources

General information only. This guide explains general concepts and is not insurance, legal or financial advice. Rules and prices vary by state and insurer. Check your policy documents and speak to a licensed insurance professional or your state insurance department about your situation.