Subrogation Rights

Subrogation rights are the legal rights an insurer acquires, after paying a claim, to step into the position of its insured and recover the amount paid from a third party responsible for the loss. If a driver's insurer pays to repair the car after another motorist caused a crash, it can pursue the at-fault driver or that driver's insurer for the cost.

Subrogation follows from the indemnity principle of insurance: the insured should be restored to its position before the loss, but should not collect twice, once from the insurer and again from the wrongdoer. It also places the final cost on the party at fault. In English law, the leading case is Castellain v Preston (1883); in most legal systems the right arises both from general law and from express clauses in the policy. The same doctrine applies to sureties, guarantors and others who pay a debt that someone else ought to bear.

Suppose a friend pays your taxi fare home because your wallet was stolen on a night out. Later the police catch the thief and recover the money. It would be odd for you to keep the recovered cash as well as the free ride. Fairly, the money should go back to your friend, who was the one out of pocket.

Subrogation works the same way. The insurer pays the customer quickly, so the customer is not left waiting while blame is sorted out. The insurer then takes over the customer's right to chase whoever caused the damage. The customer gets help straight away, the person at fault still pays in the end, and insurance prices stay lower because some claim money comes back.

1. The insurer pays the claim under the policy, usually less the insured's deductible.
2. The insurer investigates liability, preserves evidence and notifies the responsible party or its insurer of its subrogated claim.
3. The insurer makes a demand for repayment, often including the insured's deductible so both can be recovered together.
4. If the parties cannot agree, the claim goes to inter-company arbitration (in the United States, many insurers belong to a shared arbitration forum for this purpose) or to court, usually in the insured's name.
5. Recoveries are shared according to the policy and the law, with the insured's deductible typically repaid in full or in proportion.

Subrogation differs from an assignment of contract: the insurer does not buy the insured's claim, but takes it over by operation of law to the extent it has paid.

• No claim against its own insured. An insurer cannot pursue the person it insures for the very loss it covered, and this anti-subrogation rule often extends to co-insureds named on the same policy.
• The made-whole doctrine. In many US states, the insurer may not recover until the insured has been fully compensated, so a partly insured victim takes priority over its insurer when a settlement is too small for both.
• Waivers of subrogation. Leases, construction contracts and supply agreements often require parties to waive subrogation against each other, so that each side's insurer bears its own losses rather than suing the other party. Insurers usually allow such waivers if agreed before the loss.
• Prejudice by the insured. An insured who settles with or releases the wrongdoer without the insurer's consent may lose cover to the extent the insurer's recovery was impaired.
• Time limits. The subrogated claim is subject to the same limitation periods and defences as the insured's original claim.

A surety that pays under a surety bond is subrogated to the creditor's rights against the defaulting principal, including any security held, and a guarantor that pays a loan can take over the lender's claims and lien against the borrower. In the United States, the FDIC, after paying insured depositors of a failed bank, is subrogated to their claims against the receivership estate, which is how deposit insurance funds are partly replenished.

Health insurers and employer health plans commonly claim repayment from a member's personal injury settlement when they paid the medical bills. In payments, banks that refund a customer for unauthorised transactions may rely on subrogation-style clauses to pursue the merchant or the fraudster, alongside card-scheme tools such as the chargeback.

Recoveries are significant in motor, property and workers' compensation lines. Insurers estimate expected salvage and subrogation and, under many accounting regimes, deduct them from the gross claims reserve or show them as an asset. The cost of pursuing recoveries is counted as loss adjustment expense, so claims departments weigh the likely recovery against legal costs before suing.

Reinsurers share in recoveries: under quota share reinsurance they take their percentage, while excess of loss wordings usually apply recoveries first to the top of the loss, benefiting the reinsurer before the insurer's retention. Where several insurers share a single risk under coinsurance, the lead insurer usually coordinates recovery on behalf of all of them. Effective subrogation also reduces moral hazard for third parties, who cannot assume that the victim's insurance will absorb the cost of their negligence.

• National Association of Insurance Commissioners (NAIC)
• Federal Deposit Insurance Corporation (FDIC)