What Is Cost of Insurance in an IUL Policy? Life Insurance Glossary

What the charge is actually paying for

An IUL's death benefit is larger than its cash value for most of the policy's life. The difference between the two is called the net amount at risk, and it is the portion the insurer would have to pay out of its own pocket if the insured died that month. Cost of insurance is the monthly price for carrying that risk, calculated from the insured's age, health class at issue, and the current net amount at risk. It comes out of cash value every month on a schedule set in the policy, whatever the index does.

Why the charge rises with age

Mortality rates increase with age, so the per-unit cost of insurance climbs every year almost by definition. On a level (Option A) death benefit, growing cash value shrinks the net amount at risk over time, which partly offsets the rising rate; if cash value stalls or falls, that offset shrinks or disappears. An increasing (Option B) death benefit pays the face amount plus the cash value, so the net amount at risk stays near the full face amount, which tends to push lifetime cost of insurance charges higher. Every contract guarantees a maximum cost of insurance schedule. Current charges are usually lower than that maximum, but the insurer can raise them, within the terms of the contract, up to it.

A hypothetical illustration of the pattern

Consider a hypothetical $500,000 IUL issued at age 45 in good health. Early on, cash value is small, so the net amount at risk is close to the full $500,000, but the mortality rate at 45 is low, keeping the monthly charge modest. By age 75, even with meaningful cash value built up, the mortality rate itself is many times higher, and the dollar cost of insurance on the remaining net amount at risk can be a large multiple of the age-45 charge. This pattern, not the index credit, is usually the biggest reason older, underfunded IUL policies come under lapse pressure.

Why funding level matters more than the crediting rate

A policy funded well above the contract minimum builds cash value that keeps the net amount at risk, and therefore the cost of insurance, lower for longer. A policy funded at or near the minimum premium has less room to absorb a run of soft index years plus rising charges, which is why the guaranteed column of the original illustration, not just the non-guaranteed one, is worth reviewing before you buy.

In short: cost of insurance is the price of the pure death benefit risk inside an IUL, and it rises every year. How much cushion the policy has against that rising charge depends far more on funding level than on any single year's index credit.