How Much Car Insurance Coverage You Actually Need

The amount of car insurance you need depends on your state's minimum requirements, what you own, and what you can afford to pay out of pocket if something goes wrong

Every state sets a legal minimum for liability coverage — the insurance that pays for damage or injury you cause to someone else. That minimum is not the same everywhere. Some states require as little as $15,000 in bodily injury coverage per person; others require $25,000 or more. You can find your state's exact minimum on your state insurance commissioner's website or by calling your state's department of insurance.

But the legal minimum is often too low to protect you. If you cause a serious accident, medical bills and vehicle damage can easily exceed what the minimum covers. The person you hit can then sue you personally for the rest. That is why insurance experts generally recommend carrying more than your state requires — typically $100,000 in bodily injury per person and $300,000 per accident, though the right amount for you depends on your income, assets, and risk tolerance.

The other major coverage types — collision, comprehensive, and uninsured motorist — are optional in most states but required by lenders if you have a car loan or lease. How much of each you need is a separate decision from liability.

Key Takeaways

• Your state sets a legal minimum for liability coverage, which you can find on your state insurance commissioner's website, and this minimum varies by state.
• Liability coverage pays for damage or injury you cause to someone else, while collision and comprehensive cover damage to your own vehicle.
• Carrying more than your state's minimum liability coverage protects your personal assets if you cause a serious accident.
• If you have a car loan or lease, your lender will require you to carry collision and comprehensive coverage up to the vehicle's value.
• Uninsured motorist coverage protects you if you are hit by a driver who has no insurance or not enough insurance.

Understanding your state's minimum liability requirements

Liability coverage has two parts: bodily injury and property damage. Bodily injury covers medical expenses, lost wages, and pain and suffering for people you injure. Property damage covers the cost of repairing or replacing vehicles and other property you damage.

States express these minimums as three numbers. For example, California requires 15/30/5, which means $15,000 per person for bodily injury, $30,000 total per accident for bodily injury, and $5,000 for property damage. Florida requires 10/20/10. New York requires 25/50/25. Look up your state's requirement before you buy a policy — you cannot legally drive without meeting it.

Some states use a different system called "no-fault" or "personal injury protection" (PIP), which means your own insurance pays your medical bills regardless of who caused the accident. These states still require liability coverage, but the structure works differently. Your state insurance commissioner's office can tell you which system your state uses.

Why the legal minimum often is not enough

A single serious accident can cost far more than your state's minimum. A person hospitalized for a week can run up $50,000 to $100,000 in medical bills alone. If you cause that accident, your liability insurance pays up to your coverage limit, and then you are personally responsible for anything above that.

If you have a house, savings, or a steady income, the person you hit can sue you for the difference. A court can garnish your wages or place a lien on your home. This is why financial advisors recommend carrying at least $100,000 in bodily injury coverage per person and $300,000 per accident — sometimes called "100/300" coverage. If you have significant assets or a high income, you might want even more.

The cost difference between your state's minimum and higher limits is usually small. Raising your bodily injury limit from 15/30 to 100/300 might add $10 to $30 per month to your premium, depending on your age, driving record, and location. The protection is worth the difference for most people.

Collision and comprehensive coverage for your own vehicle

Collision coverage pays to repair or replace your car if you hit another vehicle, a tree, a guardrail, or any other object. Comprehensive coverage pays for damage from theft, weather, vandalism, or hitting an animal. Neither is required by law, but if you have a car loan or lease, your lender will require both.

The amount of collision and comprehensive coverage you carry is tied to your vehicle's actual cash value — what it would sell for today, not what you paid for it. If your car is worth $15,000 and you carry $15,000 in collision coverage, the insurance company will pay up to $15,000 minus your deductible if you total it. Carrying more than the car's value does not help you; the insurance company will only pay what the car is worth.

If you own your car outright and it is older or worth less than $5,000, you might skip collision and comprehensive to save money. If you cause an accident, you would pay for repairs yourself. But if you still owe money on the car, your lender will not allow this — they need to know the vehicle is insured.

Uninsured and underinsured motorist coverage

Uninsured motorist coverage (UM) pays for your medical bills and lost wages if you are hit by a driver with no insurance. Underinsured motorist coverage (UIM) pays the difference if the other driver's insurance is not enough to cover your injuries. These are optional in most states but required in some.

About one in eight drivers on the road has no insurance, according to data from the Insurance Research Council. If you are hit by one of them and you have no UM coverage, you have to pay your own medical bills or sue the driver personally — which often means getting nothing, since uninsured drivers typically have no money to collect.

UM and UIM coverage limits should match your bodily injury limits. If you carry 100/300 in liability, carry 100/300 in UM and UIM as well. The cost is usually $10 to $20 per month for both combined.

How to choose a deductible

A deductible is the amount you pay out of pocket before your insurance kicks in. For collision and comprehensive, you typically choose between $250, $500, $1,000, or higher. For liability, most policies have no deductible — the insurance company pays from the first dollar.

A higher deductible lowers your monthly premium. Raising your collision deductible from $250 to $1,000 might save you $15 to $40 per month. But if you cause an accident, you will pay $1,000 before insurance covers the rest. Choose a deductible you can actually afford to pay if you need to file a claim.

If you have an emergency fund with at least $1,000 in it, a $1,000 deductible usually makes sense — you save money on premiums and can cover the deductible if something happens. If you live paycheck to paycheck, a lower deductible protects you from a large unexpected bill.

Coverage for drivers in your household

Your car insurance policy covers anyone who lives in your home and drives your car, as long as they have your permission. If you have a teenage driver in the house, your premium will go up significantly — young drivers cause more accidents than any other age group. Some insurers charge 50 to 100 percent more to add a teen to a policy.

If someone in your household is a high-risk driver — multiple accidents, a DUI, or a suspended license — you may need to exclude them from your policy to keep your rates manageable. An excluded driver is not covered if they drive your car, but your premium stays lower. Check your state's rules on exclusions; some states limit when you can use them.

Frequently Asked Questions

What happens if I cause an accident and my insurance limit is not enough?

You are personally responsible for paying the difference. The injured person can sue you, and a court can garnish your wages or place a lien on your home or other assets. This is why carrying limits higher than your state's minimum protects your personal finances.

Do I need collision and comprehensive if I own my car outright?

No, they are not required by law. But if you cause an accident or your car is damaged, you pay for repairs yourself. If you cannot afford a large repair bill, carrying these coverages makes sense even if you own the car.

Can I change my coverage limits after I buy a policy?

Yes. You can contact your insurance company or agent at any time to raise or lower your limits. Changes usually take effect when ready or on your next billing date. Raising your limits mid-policy may not require a new underwriting process.

Does my insurance follow me if someone else drives my car?

Yes, as long as they have your permission. Your policy covers the vehicle, not the driver. If a friend borrows your car and causes an accident, your insurance pays first, then their insurance may cover additional costs depending on their policy.

What is the difference between actual cash value and replacement cost?

Actual cash value is what your car is worth today, accounting for depreciation. Replacement cost is what it would cost to buy a similar car new. Car insurance uses actual cash value, so older vehicles are worth less and insure for less.