Car insurance is required by law in every state, but what you buy beyond the legal minimum depends on your car's value, your finances, and your risk tolerance

Before you buy car insurance, you need to understand three things: what the law requires in your state, what your lender or lessor requires if you're financing the car, and what protection actually makes sense for your situation. Most people buy more coverage than the law demands—and often should—because a single accident can cost far more than the minimum liability limits allow.

The process itself is straightforward: you get quotes from insurers, compare what each one covers and costs, and pick one. But the hard part is deciding what coverage to actually purchase. A policy that looks cheap might leave you exposed to thousands in out-of-pocket costs after an accident. A policy that looks expensive might include protections you don't need.

Key Takeaways

  • Every state sets a minimum liability limit you must carry, but that minimum is often too low to cover a serious accident—most people carry higher limits.
  • If you have a car loan or lease, your lender will require collision and comprehensive coverage until the car is paid off.
  • Deductibles (the amount you pay out of pocket) directly affect your premium—raising the deductible lowers the monthly cost but increases what you pay if you file a claim.
  • Uninsured and underinsured motorist coverage protects you if someone else causes an accident and doesn't have enough insurance to cover your costs.
  • Discounts for bundling, good driving records, and safety features can significantly reduce what you pay, but only if you ask about them.

State minimum liability limits and why they're often not enough

Your state requires you to carry liability insurance, which pays for damage or injury you cause to someone else. The minimum limits vary by state—some states require as little as 15/30/5 (meaning $15,000 per person, $30,000 per accident for bodily injury, and $5,000 for property damage), while others require 25/50/25 or higher. You can find your state's requirement by searching "[your state] minimum car insurance" or calling your state's insurance commissioner's office.

The problem with minimum limits is that a serious accident can easily exceed them. A single injured person's medical bills, lost wages, and pain-and-suffering damages can reach $50,000 or more. If you're found liable and your insurance only covers $15,000, you're personally responsible for the rest—which can mean wage garnishment or a lawsuit against your assets. Most insurance agents recommend carrying at least 100/300/100 limits, and many recommend 250/500/250 or higher, especially if you have significant savings or own a home.

Collision and comprehensive coverage for financed or leased cars

Collision coverage pays to repair or replace your car if you hit something or something hits you—another car, a tree, a guardrail. Comprehensive coverage pays for damage from events you didn't cause: theft, weather, vandalism, hitting an animal. If you own your car outright, both are optional. If you have a loan or lease, your lender will require both until the car is paid off or the lease ends.

The cost of collision and comprehensive depends on your deductible—the amount you pay out of pocket before insurance kicks in. A $500 deductible means you pay the first $500 of any claim; the insurer pays the rest. A $1,000 deductible costs less per month but means you pay more if you have an accident. A $250 deductible costs more per month but reduces your out-of-pocket risk. The right choice depends on whether you can afford to pay the deductible if you need to file a claim.

Once your car is paid off or the lease ends, you can drop collision and comprehensive if you want to save money. But if your car is worth more than a few thousand dollars, keeping at least collision coverage usually makes financial sense—a single accident could total the car, and you'd have no way to replace it.

Uninsured and underinsured motorist coverage protects you from others' gaps

Uninsured motorist (UM) coverage pays for your medical bills and lost wages if someone without insurance hits you. Underinsured motorist (UIM) coverage kicks in when the at-fault driver has insurance but not enough to cover your costs. In many states, UM/UIM is optional; in others, it's required or automatically included unless you decline it in writing.

UM/UIM is inexpensive—often $10 to $30 per month—and protects you against a real risk: roughly one in eight drivers on the road is uninsured, and many others carry only the state minimum. If an uninsured driver causes an accident and you have no UM coverage, you can sue them personally, but collecting money from someone who doesn't have insurance is usually impossible. With UM/UIM, your own insurance pays, and you don't have to chase down the other driver.

Medical payments and personal injury protection coverage

Medical payments (MedPay) coverage pays your medical bills and your passengers' medical bills after an accident, regardless of who was at fault. It covers ambulance rides, emergency room visits, surgery, and follow-up care. The coverage is usually $1,000 to $5,000 per person. Personal injury protection (PIP) is similar but more comprehensive—it also covers lost wages and childcare costs—and is required in some states (called "no-fault" states).

If you have health insurance, MedPay and PIP are less critical because your health insurance will cover medical costs. But MedPay is still useful because it covers your passengers, and it pays first without affecting your health insurance deductible or rates. PIP is required in no-fault states like Florida, Michigan, and New York, so you don't have a choice there.

How deductibles affect your monthly cost and your risk

The deductible is the single biggest lever you control on your premium. Raising your deductible from $500 to $1,000 might cut your collision and comprehensive costs by 15 to 30 percent. Raising it to $2,500 can cut costs even more. But you're trading lower monthly payments for higher out-of-pocket costs if you have an accident.

The right deductible depends on your emergency fund. If you have $2,000 in savings, a $1,000 deductible is reasonable—you can cover it if you need to. If you have $500 in savings, a $500 deductible makes more sense, even if it costs a bit more per month. If you have no emergency fund, a $250 deductible might be worth the extra cost for peace of mind. The goal is to pick a deductible you can actually afford to pay if you file a claim.

Discounts that actually reduce what you pay

Insurance companies offer discounts for bundling (combining auto and home insurance), maintaining a good driving record, completing a defensive driving course, having safety features like anti-theft devices or automatic braking, paying your premium in full instead of monthly, and going paperless. Some insurers offer usage-based discounts if you install an app that monitors your driving habits.

The size of these discounts varies widely by insurer and state. Bundling might save you 10 to 25 percent; a good driver discount might save 5 to 15 percent. But you only get the discount if you ask for it or if the insurer automatically applies it. When you get a quote, ask the agent or representative which discounts you're already receiving and which ones you might be missing. Sometimes switching insurers just to get a discount you weren't receiving elsewhere can save you hundreds per year.

Getting quotes and comparing what you're actually buying

Most insurers let you get a quote online in 10 to 15 minutes. You'll need your driver's license, vehicle identification number (VIN), and driving history. You can get quotes from multiple insurers and compare them side by side. But don't just compare the price—compare what coverage each quote includes.

A cheaper quote might have a higher deductible, lower liability limits, or missing optional coverage like UM/UIM. A more expensive quote might include better coverage for the same car and driver. Use a comparison table or spreadsheet to list the coverage and deductible for each quote, then compare the total cost for the same protection level. Once you've narrowed it down to one or two insurers, call and ask if there are any discounts you're missing or if bundling with home insurance would lower the total cost.

Frequently Asked Questions

Do I need to buy the same coverage my friend has?

No. Your friend's situation—their car's value, their savings, their driving record, their state's requirements—is different from yours. What makes sense for them might not make sense for you. Use their coverage as a starting point for thinking about your own needs, but make your decision based on your car's value, your finances, and your state's requirements.

What happens if I get in an accident and my deductible is more than I can pay right now?

You can still file a claim. The insurer will pay for the repairs, and you'll owe the deductible to the repair shop or directly to the insurer. Many repair shops will let you set up a payment plan for the deductible. You can also ask the insurer if they offer any hardship options, though these vary by company.

Can I lower my premium by dropping collision and comprehensive?

Yes, but only if you own your car outright—if you have a loan or lease, your lender won't allow it. If you own the car, dropping these coverages will lower your premium, but you'll be responsible for all repair costs if you have an accident. This usually only makes sense if your car is worth less than a few thousand dollars.

How often should I shop around for new insurance?

At least once a year, or whenever your life changes—you move, get married, buy a new car, or have a major change in your driving record. Rates change frequently, and you might find a better deal elsewhere. Some people shop every six months and save hundreds per year by switching.

What if I can't afford the insurance premium?

Raise your deductible to lower the monthly cost, ask about all available discounts, bundle with home insurance if you have it, or shop around—rates vary significantly between insurers for the same coverage. If you still can't afford it, some states have assigned risk pools that provide coverage to drivers who can't find insurance elsewhere, though the rates are usually higher.