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How to File a Personal Injury Claim After a Motor Vehicle Accident

Filing a personal injury claim after a car accident isn't a single action — it's a process that unfolds in stages, shaped by your state's laws, who was at fault, what insurance coverage applies, and how serious your injuries are. Here's how that process generally works.

What a Personal Injury Claim Actually Is

A personal injury claim is a formal request for compensation from a party whose negligence caused your injuries. In the context of a motor vehicle accident, this usually means seeking payment from:

  • The at-fault driver's liability insurance (a third-party claim), or
  • Your own insurance under coverages like PIP, MedPay, or uninsured motorist (a first-party claim)

In some cases, both apply at the same time. Whether you file against someone else's insurer, your own, or both depends heavily on your state's fault system and the coverage available on each side.

First-Party vs. Third-Party Claims

Claim TypeFiled WithCommon Coverage Used
First-partyYour own insurerPIP, MedPay, UM/UIM, collision
Third-partyAt-fault driver's insurerBodily injury liability

No-fault states require injured drivers to first turn to their own PIP coverage regardless of who caused the crash. Only after meeting a specific injury or cost threshold can most no-fault claimants pursue the at-fault driver directly. At-fault states generally allow injured parties to go straight to the responsible driver's liability insurer.

The General Steps in Filing a Claim

1. Seek medical attention. Treatment records are the foundation of any injury claim. Gaps in care or delayed treatment can complicate how injuries are documented and valued later.

2. Report the accident. Most states require a police report for accidents involving injury or significant property damage. Some states also require DMV notification within a set number of days — this varies by jurisdiction.

3. Notify your insurer. Most policies require prompt notification even if you're planning to pursue the other driver. Failure to notify can affect your own coverage.

4. Document everything. Photos, medical bills, prescription records, pay stubs showing missed work, and written accounts of how injuries affect daily life all become part of the evidentiary record.

5. The insurer investigates. An adjuster is assigned to evaluate liability and damages. They'll review the police report, speak to involved parties, assess property damage, and request medical records. This process takes time.

6. A demand letter is sent. Once medical treatment is complete — or has reached a stable endpoint — a demand letter outlines what happened, what injuries resulted, and what compensation is being requested. This is often where attorneys become involved.

7. Negotiation and settlement (or litigation). Most claims settle before a lawsuit is filed. If the insurer disputes liability or the offer doesn't cover actual losses, the claimant may file suit.

How Fault Is Determined 🔍

Fault determination draws on the police report, witness statements, photos, traffic laws, and sometimes accident reconstruction experts. Insurers make their own liability determinations — they aren't bound by the police report, though it carries weight.

Comparative negligence rules in most states reduce a claimant's recovery by their share of fault. Some states use modified comparative negligence (barring recovery above a certain fault threshold, often 50% or 51%), while a small number still use contributory negligence, which can bar any recovery if the claimant is found even slightly at fault. This distinction matters enormously to claim outcomes.

What Damages Are Generally Recoverable

Personal injury claims typically pursue two categories:

  • Economic damages: Medical bills, future medical costs, lost wages, reduced earning capacity, property damage, out-of-pocket expenses
  • Non-economic damages: Pain and suffering, emotional distress, loss of enjoyment of life

Some states cap non-economic damages, particularly in certain case types. Punitive damages — meant to punish extreme misconduct — are rarely awarded in standard car accident cases and are subject to separate legal standards.

How Coverage Limits Shape Outcomes ⚖️

Even a valid, well-documented claim can be constrained by coverage limits. If the at-fault driver carries only minimum liability coverage, that ceiling may fall well short of actual losses. Underinsured motorist (UIM) coverage on your own policy can bridge that gap — up to your own policy's limits.

Subrogation is a related concept: if your insurer pays your medical bills and you later recover from the at-fault driver, your insurer may have the right to be reimbursed from that recovery.

When Attorneys Typically Get Involved

Personal injury attorneys in car accident cases almost always work on a contingency fee basis — meaning no upfront cost, and the attorney collects a percentage of the settlement or judgment if the case resolves in the claimant's favor. That percentage varies, commonly ranging from 25% to 40% depending on case complexity and stage of litigation, though this differs by state and agreement.

Attorneys typically handle demand letter preparation, insurer negotiations, lien resolution, and litigation if needed. Cases involving serious injuries, disputed liability, or significant coverage issues are the situations where legal representation is most commonly sought.

Timelines and Deadlines

Statutes of limitations — the legal deadlines for filing a lawsuit — vary by state and by the type of claim. They commonly range from one to six years for personal injury cases, but exceptions exist for minors, government defendants, and other circumstances. Missing the applicable deadline generally bars the claim entirely.

The overall claims process timeline depends on injury severity, how long treatment continues, how cooperative the insurer is, and whether litigation becomes necessary. Simple claims can resolve in weeks; complex ones involving serious injury may take years.


How all of this applies to a specific accident depends on the state where it happened, the coverage in place on both sides, the nature and extent of injuries, how fault is allocated, and what the documented losses actually show. Those variables — not the general framework — are what determine individual outcomes.