A few policies fall under the universal life insurance umbrella. But generally, this type of coverage allows you to adjust your premiums (within limits) and has a cash value component that grows based on market interest rates. Premiums typically increase over time, forcing you to increase your premium payments or cover rising costs by subtracting from your cash value account or death benefit. Universal life insurance is different from indexed universal life insurance — with those policies, the cash value growth is tied to a stock or bond index like the S&P 500.