Share This Article
Examining the renewal notice of any insurance policy, one gets the impression that the entire process of determining the premium is random. Sometimes the premium remains unchanged for several years, and suddenly jumps to 15% or even more, without any change in anything else in your life. It seems like insurance premiums are randomly assigned.
However, the insurance industry is one of the most mathematically-oriented industries today. Insurance carriers don’t guess. They predict. To understand the logic behind insurance premium calculation, one should study actuarial sciences, risk pooling, and underwriting algorithms.
1. Actuarial Sciences and Risk Pooling
The essence of insurance is nothing but applied statistics and probability theory. The insurance companies hire specialized mathematicians known as actuaries. The main purpose of actuaries is to analyze massive amounts of historical data in order to calculate the probability of a certain event happening in a certain population.
To ensure their sustainability and profitability, insurance companies utilize the following principle of risk pooling:
An insurance company collects the premiums from millions of policyholders, hence creating a huge risk pool.
Only a small fraction of this pool will suffer the misfortune and make a claim.
The premiums paid by the lucky ones will finance the losses of the unlucky ones.
To create a balanced pool, the underwriter has to assess your risk profile. Too low premiums mean that the pool won’t survive; too high premiums mean that the market competition will steal the clients away.
2. Core Pillars of Auto Insurance Calculations
When requesting a quote for your auto insurance, the proprietary algorithm of the carrier calculates the price almost instantly. Although the algorithm differs from carrier to carrier, the following factors remain constant:
History and experience
Past behavior is the most accurate predictor of future risks. No speeding tickets, moving violations, or at-fault accidents show that you are a safe driver and entitle you to massive discounts. On the other hand, poor driving record, especially multiple drunk driving arrests, will hike the premium rate. Age is another influential factor. Statistically, teenagers and drivers under 25 have many more accidents. Hence they pay the highest premiums.
Demographic factors
The location where you live plays a crucial role in auto insurance calculations. The underwriter examines the zip code of your residence and determines whether you live in a dangerous place with a high risk of theft, vandalism, or traffic jams. The type of the car is also evaluated. Cars with high safety ratings and driver assistance systems are cheaper to insure. High-horsepower sports cars and cars that require costly repairs are the most expensive.
3. Core Pillars of Home Insurance Calculations
Home insurance, in contrast to auto insurance, relies on structural engineering, geographic analysis, and possible environmental threats.
Cost of reconstruction and materials
The premium calculations for homeowners’ insurance depend on the cost of reconstructing the property. The underwriter estimates the square footage, age, architectural style, and interior materials (such as regular drywall vs custom plaster). Any increase in the construction labor wage and material prices due to inflation makes all homeowners’ insurance premiums grow for the entire region.
Environmental perils and protective measures
Using satellite imagery and weather maps, the underwriter evaluates the proximity of the property to natural perils. Properties located in hurricane-prone coastal areas, tornado-prone regions, or fire-prone canyons face additional charges.
4. Unexpected Influence: Credit-Based Insurance Score
The most surprising thing about insurance premium calculation is that it depends on your personal credit habits. In most US states, insurance providers use credit-based insurance score when calculating premiums.
It’s important to know that credit-based insurance score is not the same as the credit score that is used for loans or mortgages. It is based on exactly the same data from your credit report (like payment history, total debt, credit length).
Research shows that there is a direct connection between good credit scores and low number of insurance claims. Therefore, by having excellent credit score, you automatically become a low-risk customer. You save hundreds of dollars on premiums.
Final Strategy: Managing Your Risk Score
Understanding the fact that your premium is a result of your risk score allows taking action to minimize your costs. Even though you cannot control inflation, weather changes, and natural disasters, you still have plenty of options to improve your risk score.
Be a safe driver, maintain good credit score, install protective systems, and buy bundled policies. You can significantly lower your premium rate by presenting yourself as a low-risk customer to the underwriter’s algorithms.
Frequently Asked Questions (FAQ)
Q: Why did my premium increase this year despite the fact that I have never filed a claim or got a ticket?
A: This is a very common question. In most cases, it’s related to macroeconomic risks. Even if you behave impeccably, if there is an increase in payouts in your state due to weather, repair costs, or any other reason, the insurance company increases the premiums to stay in business.
Q: What is the difference between insurance underwriter and insurance agent?
A: An agent is your personal representative who sells the policy, explains it, and fills out the application. An underwriter is the person who evaluates your application and determines whether the company should accept you as a client or not. Underwriters use actuarial data, credit report, etc. to evaluate your application and calculate your premium.
Q: Does participation in safe driving programs lower premiums?
A: Yes, by installing an app or a plug-in device into your car, you enroll in the insurance company’s telematics program. The carrier will price your insurance individually depending on your actual daily driving habits. As a safe driver, you will receive a premium discount of up to 30%.
Q: Does gender affect auto insurance premium?
A: Although gender is rarely considered, it may still influence the premium calculation as a demographic factor. According to the actuarial data, young men are more likely to drive recklessly and have more accidents than women. However, with age, the gap fades and becomes irrelevant for people older than 25-30 years old.