What "at-fault" means and why your insurer cares

When you file a car insurance claim, the first thing your insurer investigates is who caused the accident. At-fault means the insurance company determined you were responsible for the collision. Not-at-fault means the other driver was responsible. This information affects what you pay out of pocket, whether your rates go up, and how long the claim takes to settle.

Your insurer doesn't make this decision alone. They look at the police report, photos of vehicle damage, witness statements, and sometimes accident reconstruction. If the other driver's insurer agrees with the information, the process moves faster. If they disagree, your claim may go into dispute, and you might need to provide additional evidence.

The at-fault information is separate from criminal liability or traffic citations. You can receive a ticket for running a red light and still have your insurer determine you were not at fault for the accident—though this is rare. Conversely, you might not get a ticket but still be found at fault by your insurer based on the evidence they gather.

Key Takeaways

  • At-fault claims usually raise your insurance rates for three to five years, while not-at-fault claims typically do not affect your rates.
  • In an at-fault claim, you pay your deductible before your insurer covers damage; in a not-at-fault claim, the other driver's insurer usually pays and you may not owe a deductible.
  • Your insurer determines fault based on the police report, damage patterns, witness statements, and sometimes accident reconstruction—not on who got a ticket.
  • If you disagree with your insurer's at-fault information, you can request they review the evidence again or file a complaint with your state's insurance commissioner.

How at-fault claims affect your rates and deductible

When your insurer determines you were at fault, your collision or comprehensive coverage pays for the damage to your vehicle. You pay your deductible first—typically $500 to $1,000, though you chose this amount when you bought the policy. Your insurer covers the rest, up to your vehicle's actual cash value.

The bigger cost comes later. An at-fault claim usually triggers a rate increase at your next renewal. How much depends on your insurer's pricing model, your driving history, and the severity of the accident. A minor fender-bender might raise your rate 10 to 15 percent; a serious collision could raise it 25 to 40 percent or more. Some insurers apply the increase immediately; others wait until your policy renews. Most insurers keep the increase on your record for three to five years, though this varies by state and company.

If you caused injury to someone else, your liability coverage pays their medical bills and vehicle damage up to your policy limits. You do not pay a deductible for liability claims. However, if the other person's damages exceed your liability limits, you could be responsible for the difference out of your own pocket.

How not-at-fault claims work differently

In a not-at-fault claim, the other driver's insurer is responsible for paying your damages. This is called a third-party claim because you are filing through someone else's insurance, not your own. The other driver's insurer investigates the accident and, if they agree their driver was at fault, they pay your repair costs and medical bills.

You typically do not pay a deductible in a not-at-fault claim because the other insurer is paying, not yours. However, if the other driver is uninsured or underinsured, you may need to file through your own uninsured motorist or collision coverage, which means you would pay your deductible. Some states allow you to recover your deductible from the at-fault driver later, but this requires small claims court or a settlement agreement.

A not-at-fault claim should not raise your insurance rates. Insurers do not penalize you for accidents you did not cause. However, if the other insurer disputes fault or denies the claim, your claim may stall while both insurers investigate. In that case, you might file through your own collision coverage to get repairs started, and the two insurers can sort out reimbursement later.

The claims process when fault is disputed

Not every accident has a clear at-fault party. If both insurers disagree on who caused the accident, your claim enters a dispute phase. During this time, both insurers may request additional evidence: dash cam footage, cell phone records, expert accident reconstruction, or more detailed witness statements. This process can add weeks or months to your claim.

While the dispute is ongoing, you have options. You can file through your own collision coverage to get your vehicle repaired without waiting for the other insurer to agree. You pay your deductible, and your insurer covers the rest. Once fault is determined, your insurer may recover your deductible from the other insurer and refund it to you. Alternatively, you can wait for the dispute to resolve before filing, though this means your vehicle stays damaged longer.

If the dispute cannot be resolved between insurers, some states allow you to request appraisal or arbitration. This is a process where a neutral third party reviews the evidence and makes a binding decision on fault. Your insurance policy should outline whether appraisal is available and how to request it. Check your policy documents or call your insurer to learn what dispute resolution options apply to you.

What to do if you disagree with an at-fault information

If your insurer determined you were at fault and you believe that decision is wrong, you can request a review. Contact your insurer's claims department and ask them to reconsider the information. Provide any new evidence you have: dash cam footage, additional witness statements, photos showing road conditions, or an accident reconstruction report from an independent expert. Give the insurer a specific deadline—usually 10 to 14 days—to respond.

If your insurer stands by their information, you can file a complaint with your state's Department of Insurance. Each state has a complaint process, usually available on the department's website. You will need to explain why you believe the information was wrong and provide copies of your evidence. The state will investigate and may require your insurer to reconsider. This process does not cost you anything, though it can take several weeks.

You can also hire an independent accident reconstructionist to analyze the collision and provide a written report. This costs $500 to $2,000 depending on the complexity of the accident, but a professional report can be powerful evidence if you pursue a complaint or legal action. Some attorneys offer free consultations if you are considering a lawsuit against the other driver.

How fault affects your options for recovery

If you were not at fault, you may be able to recover costs beyond what insurance covers. For example, if your vehicle is totaled and you still owe money on a loan, the other driver's insurer pays the actual cash value of your car—which might be less than what you owe. The difference is called being "upside down" on your loan. In some states, you can pursue a claim against the at-fault driver personally to recover that gap, though this usually requires small claims court or an attorney.

You can also recover rental car costs, towing fees, and other reasonable expenses if the other driver was at fault. The other insurer should cover these as part of the claim, but you may need to provide receipts. Keep all documentation of expenses related to the accident.

If you were at fault, your options for recovery are limited. You cannot recover costs from the other driver's insurer. Your own collision or comprehensive coverage pays for your vehicle damage, minus your deductible. If the other driver was also partially at fault—for example, both of you were speeding—your state's comparative fault laws determine how much each insurer pays. Some states use "pure comparative fault," where you recover a percentage of damages equal to the other driver's percentage of fault. Others use "modified comparative fault," where you can only recover if you were less than 50 or 51 percent at fault.

How at-fault accidents affect your insurance history

An at-fault accident stays on your insurance record for three to five years in most states, though some insurers keep it longer. During this time, it affects your rates with that insurer and may affect your rates if you switch to a new insurer. When you shop for insurance, most companies ask about accidents in the past three to five years, and they use that information to calculate your rate.

After the time period expires, the accident should drop off your record and stop affecting your rates. However, if you were at fault in multiple accidents or had serious violations, the impact may last longer. Some insurers also offer accident forgiveness programs, which prevent your first at-fault accident from raising your rates. These programs vary by insurer and usually require you to have a clean driving record for a certain number of years before the accident.

A not-at-fault accident does not appear on your insurance record in the same way. It may show up in your claims history if someone asks, but it should not affect your rates. Some insurers ask about not-at-fault claims when you apply, but they typically do not use them to calculate your premium.

Frequently Asked Questions

Can I be found at fault if I got a ticket?

A traffic ticket does not automatically mean your insurer will find you at fault, though it is evidence they will consider. Your insurer looks at the full picture: the police report, damage patterns, witness statements, and the ticket. You can be ticketed and still found not at fault, or vice versa. If you received a ticket you believe was unfair, you can fight it in traffic court, and that outcome may help your insurance claim.

What if the other driver admits fault but their insurer denies the claim?

An admission of fault from the other driver is helpful, but their insurer makes the final decision on their claim. If they deny it, you can file through your own collision coverage and let your insurer pursue recovery from them. You pay your deductible upfront, but your insurer may recover it later. Document the other driver's admission in writing if possible—a text message, email, or recorded statement helps.

Will my rates go up if I file a not-at-fault claim?

Not-at-fault claims should not raise your rates. However, if you file multiple not-at-fault claims in a short time, some insurers may view you as a higher risk and increase your rates anyway. This is legal in most states. If you believe your insurer is unfairly penalizing you for not-at-fault claims, you can file a complaint with your state's Department of Insurance.

How long does it take to determine fault?

Simple at-fault claims can be determined within days if there is a police report and clear evidence. Disputed claims can take weeks or months while both insurers investigate. If you need your vehicle repaired quickly, file through your own collision coverage rather than waiting for the other insurer to agree on fault.

Can I sue the other driver if their insurer denies my claim?

Yes, you can file a lawsuit against the other driver in small claims court or civil court to recover damages. Small claims court is faster and cheaper but has a limit on how much you can recover—usually $5,000 to $25,000 depending on your state. For larger claims, you may need an attorney. Consult a personal injury attorney for a free consultation to understand your options.