An IUL is an insurance policy that builds cash value tied to stock market performance

An Indexed Universal Life (IUL) insurance policy is a type of permanent life insurance that combines a death benefit with a savings component. Unlike term life insurance, which covers you for a set number of years, an IUL stays in force for your entire life as long as you pay premiums. The distinguishing feature is that the cash value portion of your policy grows based on the performance of a stock market index—usually the S&P 500—rather than a fixed interest rate or the insurance company's investment choices.

When you pay a premium into an IUL, part of that money goes toward the death benefit (what your beneficiaries receive when you die) and part goes into a cash value account. That cash value grows based on how the index performs, but with a built-in floor: your account will not lose money even if the market drops. There is also a cap on how much growth you can earn in any given year, typically between 10% and 13% depending on the policy.

Key Takeaways

  • An IUL combines life insurance protection with a cash value account that grows based on stock market index performance, not fixed interest rates.
  • Your cash value has a floor (you do not lose money in down markets) and a cap (your gains are limited even in strong years), which means returns fall between what bonds and stocks typically offer.
  • You can borrow against your cash value during your lifetime, but loans reduce the death benefit your beneficiaries receive and may have interest charges.
  • IUL premiums are higher than term life insurance and lower than whole life, and the cost depends on your age, health, and the death benefit amount you choose.
  • The cash value is not the same as a savings account—it is part of an insurance contract, and accessing it through loans or withdrawals has tax and policy consequences.

How the cash value grows and what the floor and cap mean

The cash value in an IUL is credited with interest based on the performance of a stock market index. If the S&P 500 goes up 15% in a year, your policy might credit 12% (the cap). If the S&P 500 drops 20%, your policy credits 0%—you do not lose money, but you also do not gain. This floor-and-cap structure is the core trade-off: you get some upside from market growth without the downside risk of a stock portfolio, but you also give up the full gains you would see if you owned stocks directly.

The exact cap and floor vary by policy and by insurance company. Some policies have a 10% cap, others 12% or 13%. Some have a 0% floor (no losses), while a few older policies had a small negative floor. When you are shopping for an IUL, the cap is one of the most important numbers to compare, because it directly affects how much your money can grow over time.

The cash value is separate from the death benefit. If you die, your beneficiaries receive the death benefit amount you chose when you bought the policy—not the cash value. However, some policies allow you to choose a death benefit structure that includes the cash value on top of a base amount, which means the death benefit grows as your cash value grows.

Borrowing against your cash value and the cost of access

One reason people buy IULs is the ability to borrow against the cash value while they are alive. You can take out a loan using your cash value as collateral, and you do not have to repay it on a fixed schedule. However, this flexibility comes with costs. The insurance company charges interest on the loan, typically between 6% and 8% depending on the policy. That interest is deducted from your cash value, which slows its growth.

When you borrow against your cash value, the amount you borrow is no longer earning index-linked growth. If you borrow $50,000 and the market goes up 12% that year, that $50,000 does not participate in that growth. Additionally, the loan reduces the death benefit your beneficiaries will receive, unless you repay it before you die.

Withdrawals work differently from loans. You can withdraw money from your cash value directly, but withdrawals are taxed as income on the gains (not the full amount—only the earnings above what you paid in). Withdrawals also reduce your death benefit and may trigger surrender charges if you withdraw more than a small amount in the early years of the policy.

IUL premiums and how they compare to other insurance types

An IUL costs more than term life insurance but typically less than whole life insurance. A 40-year-old in good health might pay $100 to $150 per month for a $500,000 term life policy lasting 20 years, while the same person might pay $400 to $600 per month for a $500,000 IUL. A whole life policy for the same amount could run $800 to $1,200 per month.

The premium you pay depends on your age, health status, the death benefit amount, and the insurance company. Younger and healthier applicants pay less. The death benefit you choose directly affects the premium: a $1 million death benefit costs more than a $500,000 death benefit. Some policies allow you to pay a set premium for life, while others require higher premiums early on and lower premiums later as the cash value grows.

Unlike term life, you cannot stop paying premiums on an IUL and keep the coverage. If you stop paying, the insurance company will use your cash value to cover the premiums until it runs out. Once the cash value is depleted, the policy lapses and you lose coverage. This is why understanding the long-term cost of an IUL matters before you buy one.

Tax treatment of IUL cash value and death benefits

The cash value growth inside an IUL is tax-deferred, meaning you do not pay income tax on the gains as they accumulate. This is one of the main advantages over investing in a regular taxable brokerage account. However, the tax deferral only applies while the money stays inside the policy. Once you withdraw or borrow it, taxes apply to the earnings portion.

The death benefit itself is generally income-tax-free to your beneficiaries. If you die and your beneficiaries receive the $500,000 death benefit, they do not owe federal income tax on it. However, if your total estate (including the death benefit) exceeds the federal estate tax threshold—which is over $13 million for individuals in 2024 but varies by year—your estate may owe estate taxes. This is a concern only for high-net-worth individuals.

If you surrender the policy (cancel it) and the cash value exceeds what you paid in premiums, you owe income tax on the gains. For example, if you paid $50,000 in premiums over 10 years and the cash value is now $70,000, you owe income tax on the $20,000 gain when you surrender the policy.

When an IUL makes sense and when it does not

An IUL can be useful if you want permanent life insurance coverage and also want a way to build cash value with some market upside. It appeals to people who are uncomfortable with the full volatility of stocks but want more growth potential than a fixed-rate savings vehicle offers. It also appeals to people who want the tax-deferred growth and the option to borrow against their policy.

An IUL is usually not the right choice if you need affordable life insurance for a specific period (like 20 years while your kids are young)—a term policy is cheaper and simpler. It is also not ideal if you are looking for a pure investment vehicle, because the cap on growth and the insurance costs mean you will typically earn less than you would in a diversified stock portfolio over a long time horizon.

IULs are complex products with many moving parts: the cap, the floor, the surrender charges, the loan interest rates, and the premium structure all vary by policy. Before buying one, it is worth comparing specific policies from different insurers and understanding the full cost and terms in writing.

Frequently Asked Questions

Can I lose money in an IUL if the stock market crashes?

No. The floor in an IUL protects you from losses. If the index drops, your cash value stays flat (0% return) rather than declining. You do not earn gains in down years, but you also do not lose what you have already built up.

What happens to my cash value if I stop paying premiums?

The insurance company will use your cash value to pay premiums on your behalf until it runs out. Once the cash value is depleted, the policy lapses and your coverage ends. This is why it is important to understand the long-term cost before you buy an IUL.

Is the cash value in an IUL the same as a savings account?

No. The cash value is part of an insurance contract, not a separate savings account. You cannot access it without borrowing or withdrawing, both of which have costs and tax consequences. Borrowing charges interest, and withdrawals are taxed on the gains.

How much can I borrow against my cash value?

Most policies allow you to borrow up to 90% of your cash value, though the exact amount depends on the policy. The insurance company charges interest on the loan, typically 6% to 8%, and the loan reduces your death benefit unless you repay it.

Do I owe taxes on the death benefit my beneficiaries receive?

Your beneficiaries do not owe federal income tax on the death benefit itself. However, if your total estate exceeds the federal estate tax threshold (over $13 million for individuals in 2024, but this changes yearly), your estate may owe estate taxes on the full value, including the death benefit.