Insurance

What Is Insurance?

Insurance is a contract in which an insurer agrees to pay for specified financial losses that a policyholder may suffer, in exchange for regular payments called premiums. The policyholder pays a small, predictable cost to protect against a larger, uncertain one. Common types include life insurance, health insurance, auto insurance, homeowners insurance, and disability insurance.

How Insurance Works

Insurers pool premiums from many policyholders. Because most people do not suffer a covered loss in a given year, the pool can pay the claims of the few who do. The insurer estimates how likely different losses are and how much they typically cost, then sets premiums accordingly. This estimation work is done by actuaries and underwriters.

A policy spells out what is covered, what is excluded, the deductible, and the coverage limit, which is the maximum the insurer will pay. When a loss occurs, the policyholder files a claim, and the insurer reviews it before paying, reducing the payment by any deductible.

Advantages and Disadvantages

Insurance lets people absorb a large, unexpected loss without severe financial hardship. It is also sometimes required by law or by lenders, such as for car owners or for borrowers with a mortgage.

The cost is the premium, which is paid whether or not a claim is made. Policies can be complex, and exclusions may leave gaps that a policyholder did not expect, so reading the policy wording carefully matters.

Why It Matters to Investors

Insurance companies are public businesses in their own right. Their profits depend on premiums collected exceeding claims paid plus operating expenses. They also hold large sums of premium money before claims are paid and invest it, usually in bonds and other conservative assets. Investors often look at underwriting results together with investment income, and at metrics such as the combined ratio, to judge how well an insurer is performing.