PROPERTY PROVISIONS & CONTRACT LAW · 6 MIN READ

Subrogation Equities: Made-Whole to Anti-Subrogation

Subrogation lets the insurer, after paying a loss, step into the insured's shoes against the responsible third party — a doctrine derived directly from the indemnity principle, since it prevents the insured from recovering twice while placing the ultimate cost on the wrongdoer. It exists in two forms: contractual subrogation created by policy language, and equitable subrogation arising by operation of law when one party non-officiously pays a debt that justice assigns to another. The word non-officiously matters: under the volunteer doctrine, a payer who acts gratuitously — without legal obligation, mistake of fact, or compulsion — is a volunteer and gets no subrogation. An insurer paying under its policy is never a volunteer; an insurer paying an uncovered claim purely as goodwill is. Equity then ranks the competing claims to any third-party recovery. The made-whole doctrine holds the insurer's subrogation right junior to the insured's right to full compensation: until the insured has been fully indemnified for the entire loss — including deductibles, sublimited categories, and uninsured components — the insurer may not share in the recovery. In its strict form the results are stark: an insured with a $100,000 loss, a $25,000 deductible, and only $60,000 recovered from an insolvent tortfeasor keeps the entire $60,000, because even combined with the insurer's $75,000 payment she has not been restored. Pro tanto subrogation applies the same priority when the insurer paid only part of the loss. The common-fund doctrine adds a second equity: an insurer that benefits from a fund the insured's attorney created must bear a proportionate share of the attorney fees. Both doctrines are defaults — express policy language can modify them, though courts scrutinize such carve-outs. Subrogation also has forbidden targets. The anti-subrogation rule bars an insurer from subrogating against its own insured — including an additional insured — on the very risk it insured, since the insurer cannot recover from the party whose protection it sold. The Sutton rule extends similar logic to landlord-tenant relationships, treating the tenant as an implied co-insured under the landlord's fire policy so the landlord's insurer cannot pursue the negligent tenant. Waivers of subrogation, common in construction contracts and leases, are enforceable when executed pre-loss through the proper endorsement mechanics. Finally, when two insurers cover the same risk and one pays the whole loss, the remedy between them is equitable contribution — recovery of the excess above the payer's proportionate share — which must not be confused with subrogation (against a tortfeasor) or indemnity (a complete liability shift).