Do Both Parties File a Claim After a Car Accident?

After a crash, one of the most common points of confusion is whether each driver needs to file their own claim — or whether one claim covers everyone involved. The short answer is: it depends on who was at fault, what state you're in, and what coverage each driver carries.

How Claims Generally Work After a Collision

In most car accidents, there are two basic ways a claim can be filed:

• First-party claim: You file with your own insurance company.
• Third-party claim: You file with the other driver's insurance company.

Whether one party files, both parties file, or each files with a different insurer depends on the fault rules in your state, the type of coverage involved, and the nature of the damages.

At-Fault States vs. No-Fault States

This is the single biggest factor shaping who files what.

In at-fault (tort) states, the driver who caused the accident is financially responsible for the other party's damages. The injured party typically files a third-party claim against the at-fault driver's liability insurance. The at-fault driver may file with their own insurer as well — particularly for property damage to their vehicle — depending on their collision coverage.

In no-fault states, each driver files a claim with their own insurance company for medical expenses and certain lost wages, regardless of who caused the crash. This is handled through Personal Injury Protection (PIP) coverage, which is mandatory in no-fault states. Property damage claims, however, often still follow fault-based rules even in no-fault states.

So Do Both Drivers File a Claim? ���

Often, yes — but not always the same type of claim or with the same insurer.

In a typical at-fault accident:

• The injured party (not at fault) files a third-party liability claim against the at-fault driver's insurance.
• The at-fault driver may file with their own insurer if they have collision coverage and want their vehicle repaired, or if they need defense coverage if a lawsuit is filed.

In a no-fault state:

• Both drivers typically file with their own insurers for medical and PIP-related expenses — regardless of who caused the crash.
• If injuries are severe enough to meet the state's tort threshold, the injured party may also step outside the no-fault system and pursue a liability claim against the at-fault driver.

In accidents where fault is shared or disputed, both parties may file claims simultaneously, and both insurers may investigate.

What Each Insurer Does After a Claim Is Filed

Once a claim is filed, the insurer assigns an adjuster to investigate. That process typically includes reviewing the police report, inspecting vehicle damage, reviewing medical records, and interviewing the parties involved.

Each insurance company represents its own policyholder's interests. If both drivers file claims — even related to the same accident — their insurers may reach different conclusions about fault, at least initially.

Comparative fault rules in many states allow damages to be reduced based on each party's share of responsibility. For example, if you were found 20% at fault, your recovery in some states could be reduced by that percentage. A handful of states still use contributory negligence, which can bar recovery entirely if you had any fault at all.

Property Damage vs. Injury Claims

These are typically handled separately, even within the same accident.

• Property damage claims are usually resolved faster and follow fault rules even in no-fault states.
• Bodily injury claims are more complex, often involving ongoing medical treatment, lost wages, and pain and suffering. These take longer to resolve.

If you have collision coverage, you can file with your own insurer for vehicle repairs regardless of fault — your insurer may later pursue the at-fault driver's insurer through a process called subrogation.

When Uninsured or Underinsured Drivers Are Involved 🚗

If the at-fault driver has no insurance — or not enough coverage — the injured party may file a claim under their own uninsured/underinsured motorist (UM/UIM) coverage, if they have it. This is a first-party claim filed with your own insurer, even though someone else caused the crash.

What Shapes the Outcome in Any Specific Situation

Several variables determine exactly who files what, with whom, and for how much:

• State fault rules (at-fault vs. no-fault, comparative vs. contributory negligence)
• Type and limits of coverage each driver carries (liability, PIP, collision, UM/UIM, MedPay)
• Severity of injuries and whether they meet a state's tort threshold
• Degree of fault assigned to each party
• Whether an attorney is involved, which can affect how and when claims are presented
• Whether the accident involved commercial vehicles, rideshare drivers, or uninsured parties

The mechanics of who files a claim — and what that claim can recover — are governed by state law, individual policy terms, and the specific facts of the accident. What applies in a no-fault state like Florida looks very different from what happens in an at-fault state like Texas, and even within the same state, two accidents with different injuries and coverage levels can follow entirely different paths.