How Does Insurance Work? Understanding Risk Transfer and Pooling

You probably own multiple insurance policies, but have you ever stopped to wonder – how does insurance work? The concept of insurance dates back thousands of years, and although the details have changed over time, the basic principles of risk transfer and risk pooling have not.

An Ancient Idea

According to Investopedia, the first known example of insurance may be found in the Code of Hammurabi, a Babylonian text that dates back to 1750 B.C., and it stated that a loan secured with a ship’s cargo did not have to be repaid if the ship was lost at sea. Thousands of years later, around the 1600s, new forms of insurance emerged in Europe to cover marine and fire risks.

The basic concept behind insurance is simple. An unforeseen loss can be devastating to an individual, family or business, and everyone carries this risk. By pooling resources, it’s possible to spread this risk. For centuries, organizations have facilitated this process by collecting payments in exchange for covering losses, allowing individuals and businesses to transfer their risk.

The Modern Insurance Carrier

Modern insurance carriers offer a formalized method of risk pooling and risk transfer.

• The insurance policy serves as a contract between the insurance carrier and the insured policyholder.
• The policyholder pays a premium in order to receive coverage. The premium is a predictable cost, allowing the policyholder to budget with confidence.
• The insurance carrier provides a payout if a covered loss occurs, per the terms of the policy.
• The policyholder may also pay a deductible when a loss occurs. This is a form of risk sharing, in which the policyholder retains a portion of the risk instead of transferring 100% of the risk to the carrier. This can help keep the premiums lower, and it may also incentivize the policyholder to manage their risks prudently to avoid a loss.

Most insurance policies pay out based on actual losses. However, there are other ways of handling insurance. Parametric insurance policies, for example, pay out based on the occurrence and proximity of a triggering event. For example, someone with a parametric policy covering hurricanes could receive a payout if a hurricane of a certain magnitude strikes a certain area, regardless of whether any damage occurs.

How Insurers Stay Profitable 

Insurance works as a way to pool and transfer risk due to the law of large numbers. Although it’s impossible to say whether an individual policyholder will have a large loss, it is possible to forecast the expected losses of a large group.

However, for the insurance model to work, the insurance carrier needs to maintain enough funds to cover expected payouts. Otherwise, they risk going insolvent, and that’s bad for both the carrier and its policyholders. Case in point, Bloomberg says that Florida homeowners were left scrambling to find new coverage after seven property insurers in the state went bankrupt in 2021 and 2022.

To stay healthy, insurers implement three key strategies:

• Collect sufficient premiums. Insurers use an underwriting process to determine the expected risk involved in an account and charge appropriate premiums. When losses increase, insurers will typically raise premiums to offset the increase.
• Invest earnings. Insurance carriers often invest a portion of premiums to earn interest and generate additional profit. As a result, insurers can earn more when interest rates are higher.
• Purchase reinsurance. Reinsurance is essentially insurance for insurance carriers. Reinsurance is commonly used to cover excessive losses, such as those that could occur from a hurricane.

Understanding how insurance works can help policyholders navigate their own insurance needs. For example, you can increase your deductible – and thus your share of the risk – to lower your premiums. If you have questions, or could benefit from expert guidance, find a FICOH agent.