Guides
First-party vs third-party claims
The difference between claiming on your own policy and claiming against the at-fault driver's insurer, and how to choose when the other driver caused the crash.
A first-party claim is one you make under your own policy, such as collision, comprehensive or personal injury protection. A third-party claim is one you make against someone else's policy, usually the at-fault driver's liability coverage. When another driver caused the crash, you can often choose either route: your own insurer is usually faster but charges your deductible, while the other driver's insurer pays without a deductible but only after it accepts that its customer was at fault.
The two routes side by side
| First-party claim (your insurer) | Third-party claim (their insurer) | |
|---|---|---|
| Coverage used | Your collision, comprehensive, PIP, MedPay or uninsured motorist coverage | The at-fault driver's liability coverage |
| Who you deal with | Your own adjuster | The other driver's adjuster |
| Your deductible | Applies to vehicle damage | Does not apply |
| Fault has to be settled first? | No; your coverage pays regardless of fault | Yes; they pay only for what their customer is legally responsible for |
| Limit on payment | Your coverage terms (for example, actual cash value of your car) | Their liability limit |
| What you can recover | What your policy promises | Damages under your state's law, which can include loss of use and, in many states, diminished value |
| Your legal relationship | A contract; the insurer owes you duties under the policy and state claims rules | No contract; you are a claimant against their policyholder |
| Effect on your premium | Not-at-fault claims usually weigh less, but rules vary | Generally none, since you were not at fault |
How a first-party claim works when you were not at fault
You file with your own insurer, pay your deductible to the repair shop, and your insurer fixes the car. Your insurer then pursues the at-fault driver's insurer to recover what it paid, a process called subrogation. If it recovers, you should get your deductible back, sometimes in full and sometimes in proportion to what was recovered.
The NAIC's model claims regulation says insurers should include your deductible in their subrogation demand if you ask, and share recoveries with you proportionally unless the deductible has been recovered some other way (NAIC Model Regulation 902, Section 8D). States adopt their own versions, but this is the common pattern. More detail is in subrogation explained: how your insurer recovers your deductible and do you pay a deductible if the accident was not your fault?.
The main advantage is speed and control. Your insurer does not need to win the fault argument before fixing your car, and you are dealing with a company that owes you contractual duties.
How a third-party claim works
You file with the other driver's insurer, which investigates whether its policyholder was at fault and how much your damages are. If it accepts liability, it pays for repairs without a deductible and typically pays for a rental or loss of use while your car is out of service.
The drawbacks:
- It can stall on fault. If their customer disputes the facts, the insurer may delay or deny until the evidence is clear.
- Their limits cap the payment. If the at-fault driver carries only state-minimum property damage liability and your car is worth more, you may need your own coverage anyway.
- They owe you less. You are not their customer. Unfair claims practices rules still apply, but the duty of good faith runs mainly to their own policyholder.
Insurers are not supposed to push you back to your own policy just to avoid paying. The NAIC model says that where liability and damages are "reasonably clear," insurers shall not recommend that third-party claimants make claims under their own policies solely to avoid paying claims under the insurer's policy. California's regulations contain the same rule (10 CCR 2695.8(d)).
How state fault rules affect third-party claims
Whether you can collect from the other driver at all, and how much, depends on your state's negligence rule:
- Comparative negligence states reduce your recovery by your share of fault. Some bar recovery once your share reaches 50% or 51%.
- Contributory negligence jurisdictions can bar recovery entirely if you were even slightly at fault. These are Alabama, Maryland, North Carolina, Virginia and the District of Columbia, with some exceptions in D.C. for pedestrians and cyclists.
In no-fault states, injuries work differently: you generally claim your own personal injury protection first, regardless of who caused the crash, and can step outside that system only for more serious injuries. Vehicle damage is still usually handled through fault. See no-fault vs at-fault states.
Which route to choose
Use these questions as a decision guide:
- Is fault clear and accepted? If the other driver was cited or rear-ended you, and their insurer has accepted liability, a third-party claim can save your deductible.
- Do you need the car fixed quickly? If the other insurer is slow to decide fault, start a first-party collision claim and let your insurer recover the money.
- Do you have collision coverage? Without it, your options are the third-party claim or, where available, uninsured motorist property damage coverage.
- Are the other driver's limits enough? If damage or injuries may exceed their limits, involve your own insurer early.
- Do you want to claim diminished value or loss of use? These are usually third-party items; your own policy may not pay them.
You can also start both: report to your own insurer (which most policies require anyway) and open a claim with the other insurer. Just make sure you do not get paid twice for the same damage, and keep both adjusters informed. The after-accident checklist and information form helps you collect what both will ask for.
Key takeaways
- First-party claims use your own coverage, are usually faster, and charge your deductible; your insurer can recover it later through subrogation.
- Third-party claims use the at-fault driver's liability coverage, carry no deductible, but wait on a fault decision and are capped by their limits.
- Insurers are not supposed to steer you to your own policy just to avoid paying when liability is reasonably clear.
- Your state's negligence rule decides how much you can recover from the other driver; five jurisdictions still use contributory negligence.