The Principle of Insurable Interest

The Principle of Insurable Interest
 
The Principle of Insurable Interest is the single most important foundation of any valid insurance contract. If this principle is absent, the contract is legally void.

What is Insurable Interest?

Insurable Interest refers to the economic, legal, or beneficial relationship you (the insured) have with the person or property being insured.

Simply put, you must be in a position where:

You benefit

1. if the subject matter remains safe and sound.
2. You will suffer a quantifiable loss or damage if the insured event occurs.

Without this interest, the contract is not binding on either party, as explicitly stated in Section 863 of the Thai Civil and Commercial Code.


Why is it Required? (The Two Purposes)

• Anti-Gambling: It prevents insurance from becoming a form of legalized gambling where people could bet on the misfortune of others.
• Anti-Moral Hazard: It removes the incentive for the insured person to deliberately cause the loss (e.g., burning down a building) just to collect the payout.

Practical Examples
 
In Property Insurance (Non-Life):

• Correct Interest: A car owner insuring their vehicle has an interest based on legal ownership. A tenant insuring their rented apartment's contents has an interest based on economic benefit/loss of their belongings.
• Limited Interest: A company that merely stores goods in a building owned by another person only has an insurable interest in the goods, not the building itself. Their claim will be limited only to the goods lost (Supreme Court Judgment No. 1742/1977).

In Life Insurance:

• Correct Interest: You have an interest in your own life and the life of your spouse due to mutual financial support and dependency.
• No Interest (Void Contract): A person who pays the premium for and names themselves as the beneficiary of someone else's life insurance, but has no legal or financial relationship with that person (e.g., they are just a casual acquaintance), has no insurable interest. The contract is not binding, and no claim can be made, even if premiums were paid (Supreme Court Judgment No. 929930/2017).

Key Takeaway: The legal validity of the contract is determined by the interest of the Insured (the person taking out the policy), not the Beneficiary. Always confirm a valid legal or economic link to the subject matter before signing and paying premiums.