Can Both Parties Be at Fault in a Car Accident?

Last Updated on February 5, 2026

Yes—both drivers can be at fault in the same car accident. Fault isn’t always all-or-nothing, and insurers often assign a percentage of responsibility to each driver based on the evidence.

That fault split matters because it affects who pays, how much each person can recover, and whether you can pursue the other driver’s liability insurance for repairs or injuries. Here’s how shared fault works, what happens in no-fault states, and what to do if you disagree with the decision.

• Yes—both drivers can share fault in the same accident, and insurers often assign percentages like 80/20, 60/40, or 50/50.
• Your payout is usually reduced by your share of fault, and in many states you can’t recover anything if you’re over a certain threshold (often 50% or 51%).
• Even in no-fault states, insurers may still investigate fault because it can affect property damage, subrogation, and future premiums.
• Strong evidence (photos, witnesses, dashcam footage, and reports) is the best way to fight an unfair fault split and protect your claim.

How Insurance Companies Decide Fault

After a crash, each insurance company investigates and makes its own liability decision. Then the insurers negotiate (and sometimes arbitrate) to reach an agreed fault split. The investigation typically relies on:

• Statements from both drivers and passengers
• Photos/video (dashcam footage is especially helpful)
• Vehicle damage patterns and point of impact
• Witness statements
• The police report (when one exists)

If you want a deeper breakdown of the investigation process, see determining fault in a car accident.

How Partial Fault Works in Most States

In many accidents, both drivers contributed—speeding, following too closely, an unsafe lane change, distracted driving, failure to yield, etc. When that happens, insurers may assign a split such as 80/20, 60/40, or 50/50.

Example: If you’re found 30% at fault and the other driver is 70% at fault, you may be able to recover 70% of your covered damages from the other party (depending on your state’s negligence rules). Your compensation is reduced by your share of fault.

Many states follow a “modified comparative negligence” rule, which can block recovery if you are found to be more than a certain percentage at fault. A common threshold is that you can’t recover if you’re found to be more than 50% at fault (rules vary by state).

What a 50/50 Fault Decision Usually Means

A 50/50 split is common when the evidence is incomplete or both drivers made comparable mistakes. In a 50/50 scenario, each side typically pays for their own vehicle damage through their own coverage (like collision), and each side may recover only part of their costs from the other driver—again depending on state rules and policy coverages.

Practical tip: a 50/50 decision can still affect your premium at renewal. Even when you’re only partially at fault, it’s still an at-fault accident in many insurers’ rating systems.

What Happens in No-Fault States?

In no-fault states, your own insurance typically pays for your medical expenses after a crash through personal injury protection (PIP), regardless of who caused the accident.

Important: “No-fault” usually applies to injury claims, not everything. Property damage (car repairs) is often still handled based on fault, and no-fault states usually allow lawsuits only in certain situations (like serious injury thresholds). So even in no-fault states, insurers may still investigate fault because it can affect subrogation, property damage payments, and future premiums.

How Shared Fault Affects Repairs, Deductibles, and Payouts

When both drivers are partially at fault, here’s how the money side often plays out:

• If you use your collision coverage: your insurer can pay to fix your car (minus your deductible) even if you were partially at fault. Then they may try to recover what they paid from the other insurer. If they recover money, you may get some or all of your deductible back—sometimes reduced by your percentage of fault.
• If you file against the other driver’s liability coverage: the other insurer will reduce (or deny) payment based on your share of fault and your state’s rules.
• If injuries are involved: fault can impact liability settlements, and in no-fault states PIP usually pays first for your injuries (up to limits), with additional claims depending on thresholds and coverage.

What to Do After an Accident When Fault Might Be Shared

If the crash involves another driver, assume fault could be disputed and document everything. Start with safety, call 911 if anyone is injured, and consider calling police so there’s an official record. The report can become part of your claim file: do auto insurance companies check police reports?

Next, gather strong evidence right away—photos of the vehicles, skid marks, debris, traffic controls, street signs, and the wider scene. This step matters most when the other driver changes their story later. Use this checklist: how to document damage and gather evidence for a car insurance claim.

You don’t always need a police report for every claim, but it can help in disputed-liability situations. Here’s the nuance: do you need a police report to file a claim?

Finally, notify your insurer promptly. Waiting can make everything harder, especially if the other driver reports first. If you’re unsure, read should you report every single accident to your insurance company?

What If You Disagree With the Fault Decision?

If your insurer assigns fault you believe is unfair, ask for a clear explanation of what evidence drove the decision. Provide any additional documentation you have (photos, witness contacts, dashcam footage, repair notes).

If the insurers still disagree, the dispute may go through an industry arbitration process in many cases. Learn how that works here: arbitration in car accidents and insurance claims.

For serious injury claims or high-dollar disputes, it may also make sense to speak with an attorney—especially if fault percentage is the difference between getting paid and getting nothing. Here’s when it’s worth considering: when to hire an auto insurance lawyer.

Watch for Low Settlement Offers in Shared-Fault Claims

When fault is split, it’s common for insurers to start negotiations with a low offer and cite comparative negligence. Before you accept anything, make sure it covers the real costs of the accident and reflects the evidence. Use this guide to sanity-check the numbers: how to know when a settlement offer is too low.

FAQs on Shared Fault Car Accidents

Final Word: Can Both Parties Be at Fault?

Yes. Shared fault is common, and insurers often assign percentages of responsibility based on the evidence. Your ability to recover money—and how much—depends on your state’s rules, the available coverages, and how well the accident is documented. When fault is unclear, the best “rate-protecting” move is usually the same: document aggressively, report appropriately, and push back with evidence if the fault split doesn’t match what happened.