The minimum your state requires, plus what protects your own car

Every state requires liability insurance — it pays for damage or injury you cause to someone else. Most states also require uninsured motorist coverage, which protects you if an uninsured driver hits you. Beyond those legal minimums, you need collision and comprehensive coverage if you have a loan or lease on your car, because your lender will require it. If you own your car outright, those two are optional but protect you from paying out of pocket for accidents, theft, or weather damage.

The right mix depends on three things: what your state legally requires, whether you owe money on the car, and how much you can afford to pay out of pocket if something happens. A newer car with a loan needs more coverage than an older paid-off car. A long commute on a highway needs different coverage than occasional local driving.

Key Takeaways

  • Liability insurance is required in every state and pays for damage or injury you cause to others; your state sets minimum dollar amounts you must carry.
  • Collision and comprehensive coverage are required by lenders if you finance or lease a car, but optional if you own it outright.
  • Uninsured and underinsured motorist coverage protects you when another driver causes an accident; it is required in most states and costs very little.
  • Your deductible — the amount you pay out of pocket before insurance kicks in — directly affects your monthly premium; higher deductibles lower your premium but raise your risk.
  • Older cars and paid-off vehicles may not need collision and comprehensive coverage if you can afford to replace them yourself.

Liability insurance: what your state requires

Liability coverage pays for medical bills, lost wages, and vehicle repairs when you cause an accident that injures someone or damages their property. Every state requires it, but the minimum dollar amounts vary. Most states require something like 25/50/25 — meaning $25,000 per person injured, $50,000 total per accident, and $25,000 for property damage — but some are higher and some lower. Check your state's Department of Motor Vehicles website or call your insurance agent to find your state's exact minimum.

The legal minimum is often too low. If you cause a serious accident, medical bills and vehicle damage can easily exceed $50,000. Many insurers recommend carrying 100/300/100 or higher, especially if you have assets to protect. The difference in premium between the state minimum and a higher limit is usually $10 to $30 per month, but it can save you thousands if you cause a major accident.

Collision and comprehensive: protecting your own car

Collision coverage pays to repair or replace your car if you hit another vehicle, a tree, a guardrail, or any other object — including if you roll over. Comprehensive coverage pays for theft, vandalism, weather damage (hail, flooding, wind), animal strikes, and glass breakage. If you have a loan or lease, your lender requires both. If you own your car outright, they are optional.

The trade-off is your deductible. A $500 deductible means you pay $500 out of pocket, and insurance pays the rest. A $1,000 deductible lowers your monthly premium by 15 to 30 percent, but you pay more if you have a claim. If your car is worth $8,000 or less, a $1,000 deductible makes sense because the premium savings add up over time. If your car is worth $25,000, a $500 deductible is usually worth the extra cost.

Once your car is paid off, you can drop collision and comprehensive if you want to. Many owners keep them anyway because a single accident or theft can cost thousands to replace. Others drop them once the car reaches a certain age or value — there is no rule, only what you can afford to lose.

Uninsured and underinsured motorist coverage

Uninsured motorist (UM) coverage pays your medical bills and lost wages if a driver without insurance hits you. Underinsured motorist (UIM) coverage kicks in when the other driver's liability limit is too low to cover your injuries. Most states require one or both; a few allow you to decline in writing. The cost is usually $10 to $20 per month and is one of the best values in insurance.

This coverage protects you and your passengers. If an uninsured driver causes a $40,000 accident and you have $100,000 in UM coverage, your insurance pays your bills. Without it, you would have to sue the other driver — and if they have no insurance, collecting is nearly impossible. Even in states where it is optional, carrying it is worth the small premium.

Medical payments coverage: a small add-on

Medical payments coverage (sometimes called MedPay) pays medical bills for you and your passengers after an accident, regardless of who caused it. It covers ambulance rides, emergency room visits, surgery, and follow-up care. It does not cover lost wages or pain and suffering — only actual medical costs. The limit is usually $1,000 to $5,000 per person.

This coverage is optional and costs $10 to $25 per month. It is useful if you do not have good health insurance or if you want to avoid using your health insurance deductible after an accident. If you have solid health coverage, you may not need it. If you drive frequently with passengers, it is worth adding.

How to choose your deductible and limits

Start with your state's minimum liability requirement, then ask yourself: if I caused a serious accident, could I afford to pay $50,000 out of pocket? If not, raise your liability limit. Most people should carry at least 100/300/100; if you have significant assets or a high income, 250/500/250 or higher makes sense.

For collision and comprehensive, your deductible should match what you can actually pay if your car is damaged. If you have $2,000 in savings, a $1,000 deductible is risky because one accident could wipe out your emergency fund. A $500 deductible costs more per month but keeps you from going into debt after a claim. If you have $10,000 in savings, a $1,000 deductible is reasonable.

Review your coverage every two years or after a major life change — a new car, a move, a job change, or a significant increase in driving. As your car ages and loses value, you may want to drop collision and comprehensive or raise your deductible to lower your premium.

Common coverage gaps to avoid

Many drivers carry the state minimum liability and nothing else, thinking they are fully covered. They are not. A $25,000 liability limit can be exhausted in a single serious accident. Uninsured motorist coverage is cheap and often overlooked, but it is one of the most important protections you can buy.

Another gap: drivers who drop collision and comprehensive too early. If you still owe money on your car, your lender will not allow it. If you own the car but drive it daily, dropping these coverages means one accident or theft could cost you thousands. The premium savings are usually not worth the risk unless your car is very old or very cheap.

A third gap: not updating your coverage when you move or buy a new car. Your old limits may not be enough for a newer, more expensive vehicle. Your new state may have higher minimum requirements. Always review your policy when circumstances change.

Frequently Asked Questions

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

No, they are not legally required. But if you cannot afford to replace your car out of pocket, keeping them is worth the cost. If your car is worth less than your annual deductible, you can drop them. If it is worth more and you drive it regularly, keeping them protects you from a major financial loss.

What happens if I get in an accident without enough liability coverage?

Your insurance pays up to your limit, and you are personally responsible for anything above that. The other person can sue you for the difference, garnish your wages, or place a lien on your home or car. This is why carrying higher limits than your state's minimum is important.

Is uninsured motorist coverage really necessary?

Yes. About one in eight drivers is uninsured, and many more are underinsured. If an uninsured driver hits you, your own liability insurance will not help — you need UM coverage. It costs very little and protects you from paying your own medical bills or having to sue someone who cannot pay.

Can I lower my premium by raising my deductible?

Yes, but only if you can actually afford to pay the higher deductible. Raising your deductible from $500 to $1,000 might save $15 to $30 per month, but if you have an accident and cannot pay $1,000, you are stuck. Only raise your deductible if you have the cash on hand to cover it.

Should I buy coverage for rental cars?

Check your personal auto policy first. Many policies extend collision and comprehensive to rental cars at no extra cost. If yours does not, rental car coverage (called a rental reimbursement endorsement) costs $10 to $15 per month and covers the daily rental fee if your car is in the shop after an accident.