1.2 Insurable Interest, Indemnity, and Other Insurance Principles

Insurable Interest

Insurable interest exists when a person would suffer a genuine financial loss if the insured property were damaged or destroyed. Without it, a policy is a wager and is void.

Key timing rule the exam loves: in property and casualty insurance, insurable interest must exist at the time of loss (not necessarily at policy inception). Contrast with life insurance, where insurable interest need exist only at policy inception. Sources of insurable interest include ownership, a secured creditor's lien (a mortgagee), a bailee's responsibility for others' goods, and contractual obligations.

A practical consequence: if you sell your house and the buyer's check clears, you no longer have an insurable interest, so your old policy would pay nothing on a later fire even if it has not yet been cancelled — because indemnity requires an actual financial loss to you.

The Principle of Indemnity

Indemnity means the insured is restored to the same financial condition that existed immediately before the loss — no better, no worse. P&C is fundamentally a contract of indemnity, which prevents the insured from profiting from a loss and reduces moral hazard.

Several mechanisms enforce indemnity:

• Actual Cash Value (ACV) = Replacement Cost − Depreciation.
• Policy limits cap the recovery.
• Other-insurance clauses prevent double recovery.
• Subrogation lets the insurer recover from a negligent third party.
• Salvage rights transfer damaged property to the insurer after a total-loss payment.

Worked ACV Example

A homeowner's 15-year-old roof is destroyed by hail. A new roof costs $18,000 to replace. The roof had a 25-year useful life, so it has depreciated 15/25 = 60%.

• Depreciation = $18,000 × 0.60 = $10,800
• ACV = $18,000 − $10,800 = $7,200

Under an ACV policy the insurer owes $7,200 (less any deductible). Under a Replacement Cost policy the insurer pays the full $18,000 once the roof is actually replaced — the policyholder typically receives ACV first, then the withheld depreciation (the "recoverable depreciation") after repairs are completed and receipts submitted.

Subrogation, Contribution, and Other Insurance

Subrogation transfers the insured's right to recover from a negligent third party to the insurer after the insurer pays the claim. The insured cannot collect from both the insurer and the wrongdoer (which would violate indemnity), and the insured must not impair the insurer's subrogation rights.

When two or more policies cover the same loss, other-insurance provisions allocate the payment. The three common methods are:

Pro Rata Worked Example

A $90,000 covered loss is insured by two carriers — Company A with a $200,000 limit and Company B with a $100,000 limit. Total limits = $300,000.

• Company A share = ($200,000 ÷ $300,000) × $90,000 = $60,000
• Company B share = ($100,000 ÷ $300,000) × $90,000 = $30,000

Neither pays more than its proportional share, and the insured still recovers only the $90,000 actual loss — indemnity is preserved.

Utmost Good Faith and Related Doctrines

Insurance contracts demand utmost good faith (uberrimae fidei) from both parties. Three related concepts:

• Representations are statements believed true when made; a material misrepresentation can void coverage.
• Warranties are guarantees that something is true; breach can void coverage even if immaterial (though most states soften this).
• Concealment is the deliberate withholding of a material fact; if intentional and material, the insurer may rescind.

Estoppel prevents an insurer from denying a fact it previously asserted or waived; waiver is the voluntary surrender of a known right.

Stated Value, Agreed Value, and the Limits of Indemnity

Pure indemnity is sometimes modified by contract. Valued policies (common for fine art, antiques, and some classic autos) pay a pre-agreed amount regardless of ACV, because the true value is hard to prove after a total loss. Several states also enforce a valued-policy law that forces the insurer to pay the full face amount of a property policy on a total loss by a covered peril, overriding the usual ACV calculation.

An agreed-value option on commercial property suspends the coinsurance clause in exchange for the insured agreeing up front to a value the insurer accepts. These exceptions still aim to indemnify — they simply fix the measurement in advance to avoid disputes.

Timing of Insurable Interest

A subtle but tested point: in property insurance the insurable interest must exist at the time of loss (you can insure a building you may sell, but you collect only if you still own it when it burns). This differs from life insurance, where interest must exist at inception. Property and casualty questions therefore reward candidates who check ownership or financial stake as of the loss date, not the policy date.

Insurable interest can arise from ownership, a secured creditor's interest (a mortgagee or lienholder), contractual rights (a bailee responsible for others' property), or legal liability. Recognizing that more than one party can hold an insurable interest in the same property — owner and mortgagee, for instance — explains why both appear on a settlement check.