Indexed universal life, or IUL, is permanent life insurance whose cash value earns interest tied to a market index, between a floor and an upper limit that the insurer sets. It is insurance first: every month the policy deducts the cost of the death benefit and other charges. Whether IUL is a good investment is the wrong opening question, because the policy does not invest in the index. The useful ones are whether you want permanent coverage, whether you can fund it heavily and hold it for decades, and who designs and reviews it.
What indexed universal life insurance is
A universal life policy is a flexible-premium contract. Premiums go in. Each month the insurer takes out the cost of insurance and administrative charges. What remains is the cash value, which earns interest. Maryland’s insurance regulator notes in its consumer advisory that the cost of insurance increases each year as you get older, which is why how a policy is funded matters as much as which policy it is.
“Indexed” describes how the interest is set. In place of a declared rate alone, you can allocate cash value to index accounts. The insurer tracks an index such as the S&P 500 over a period, usually a year, and credits interest by formula. You do not own shares or the index. The credit is normally based on the change in the index’s price level, so dividends are not part of it.
How the policy credits interest
Four terms do the work. The numbers below are illustrations, not current rates.
| Term | What it does | If the index rises 10% | If the index falls 15% |
|---|---|---|---|
| Floor | The lowest credit for the period, commonly 0% | No effect | Credit is 0% |
| Cap | The highest credit for the period | With a 9% cap, the credit is 9% | Credit is 0% |
| Participation rate | The share of the index change that is credited | At 60%, the credit is 6% | Credit is 0% |
| Spread | A percentage subtracted from the index change | With a 2% spread, the credit is 8% | Credit is 0% |
Many policies also offer a fixed account with a declared rate.
The floor is typically a guaranteed feature of the contract. Caps, participation rates and spreads are set by the insurer for each period, down to minimums written into the policy.
An insurer typically pays for index credits through a hedging program, funded from the earnings on its own investment portfolio. The NAIC’s illustration guideline calls the amount it spends the hedge budget. Caps follow that budget. When the insurer earns more on its portfolio, there is room for higher caps, and the reverse is also true.
What the policy charges
- Premium charge. Typically a percentage taken from each premium before it reaches the cash value.
- Cost of insurance. A monthly charge for the death benefit. It reflects the insured’s age and health and the amount at risk, and it rises with age.
- Administrative and expense charges. Monthly fees, commonly higher in the early years.
- Surrender charge. A deduction if the policy is given up in its early years, on a schedule set in the contract.
- Rider and index account charges. Optional benefits cost extra. Some index accounts carry a charge in exchange for a higher cap or a multiplier.
- Loan interest. Charged on any policy loan.
Each charge has a current level and a contractual maximum. The policy states both, and a careful design is read against both.
What the 0% floor does
The floor applies to the interest credit. In a year when the index falls, the credit is 0%, not a negative number. The policy’s monthly charges are a separate line, and they come out in every year.
A simple illustration: a policy starts the year with $1,000,000 of cash value. The index falls 15%, so the credit is 0%. Charges for the year total $18,000. The policy ends the year at $982,000. A direct holding in the same index would stand at about $850,000 before dividends.
Two things follow for design. A policy funded heavily at the start has a large base earning credits from the first day, so the charges are a smaller share of it. And the order in which strong and flat years arrive matters, not only the average. For that reason a plan built on an IUL policy should be tested across many market paths, not at one constant rate.
An illustration has a guaranteed column and a non-guaranteed column
The guaranteed column assumes the contract’s minimum interest and maximum charges in every year. It is the contractual minimum case, not a forecast.
The non-guaranteed column assumes current charges and one constant crediting rate every year. No index behaves that way. Real credits arrive unevenly, some years at the cap and some at the floor. An illustration is therefore the starting point for a design, and a careful plan is tested well beyond it.
Regulators set limits on what the second column may show. The NAIC adopted a guideline for indexed policies in 2015, replaced it for policies sold from December 14, 2020, tightened the limits in 2023 and has since added disclosure requirements. Under the current guideline:
- the highest rate an illustration may use is limited by a formula based on historical results for a benchmark index account and on the insurer’s own investment earnings;
- an illustration that includes loans may not credit the borrowed amount more than 0.50 percentage points above the loan interest rate;
- a second ledger at a lower rate, called the alternate scale, has to appear beside the main one with equal prominence.
After the first policy year you can also request an in-force illustration, which reruns the projection from the policy’s actual values. That document is the basis of a yearly review.
Cash comes out through withdrawals and policy loans
A withdrawal removes value permanently and reduces the death benefit. Amounts up to the premiums you have paid are generally not taxed. Amounts above that are ordinary income.
A policy loan is borrowing from the insurer with the policy as collateral. The insurer charges interest. Depending on the loan type, the borrowed amount either earns a fixed rate or stays in the index accounts, and that choice is part of the design. A loan is generally not treated as taxable income while the policy stays in force and is not a modified endowment contract. It is a debt of its own: interest accrues, and the balance is settled from the death benefit.
When this site describes projected policy cash, this is its source: policy loans or withdrawals, for the illustrated period, with tax treatment that depends on the case. The glossary defines each term.
The 7-pay test sets how fast a policy can be funded
Federal tax law limits how fast a policy can be funded. Under the 7-pay test, a contract becomes a modified endowment contract, or MEC, if the premiums paid during its first seven years exceed the level premiums that would have paid the policy up in seven years.
MEC status changes the tax treatment of money taken out during life. Loans and withdrawals are taxed as ordinary income to the extent the policy has gain, and a 10% additional tax can apply before age 59 and a half. A policy designed for later loans is therefore funded as heavily as the limit allows and no further. Getting that right is design work. Ask for the test result in writing and have your CPA confirm it.
A policy is kept in force by design and review
A policy stays in force as long as its value covers the monthly charges and any loan interest. Maryland’s advisory describes how a policy falls behind: interest comes in lower than predicted, and the planned premium is no longer enough. The answer is to see that early and act on it. Three things keep a well-built policy on plan.
- Funding. The policy is funded heavily and early, inside the 7-pay limit, so its value is working from the start.
- Loan sizing. Policy loans are kept well inside the policy’s value, with margin.
- Review. Each year the in-force illustration is compared with the plan, so adjustments are made early.
The tax treatment of policy loans rests on the same discipline. A loan is generally not taxable income while the policy stays in force. IRS Publication 525 gives the general rule for a surrender: proceeds above the cost of the policy are income. Carrier disclosures apply the same treatment to loans above cost basis if a policy ends with a loan outstanding. Keeping the policy in force, with loans well inside its value, is what the yearly review is for.
Five questions a careful buyer asks
| Question | How the contract works | How a managed plan handles it |
|---|---|---|
| How realistic is the illustration? | The non-guaranteed column uses one constant rate, within limits regulators have set and tightened since 2015 | The case is modeled under a conservative risk profile and tested across many market paths |
| Does the policy earn the index’s return? | No. It is an interest-crediting contract with a floor below and a cap above, based on the price index without dividends | The plan is built on capped credits, not on equity returns |
| How do the charges work? | Charges are highest in the early years, and a surrender charge applies for a set period | The policy is funded heavily at the start and held for the long term |
| Can the insurer change the terms? | Caps, participation rates and current charges can move within contractual limits | Policy values are reviewed every year against the plan, so adjustments are made early |
| Why not term insurance and a brokerage account? | Term insurance costs less for the same death benefit and builds no cash value | IUL is used where permanent coverage and policy cash are both part of the plan |
Who it suits
IUL suits someone who wants permanent coverage for a specific reason, can fund the policy close to the tax limit without strain, does not need the money for at least fifteen years, and has the policy reviewed against an in-force illustration every year. It is a long-term contract, and it rewards being treated as one.
Where The Family Office Mortgage fits
The Family Office Mortgage pairs a jumbo mortgage with a separately funded IUL policy, and a bank finances part of that policy’s premiums. The policy does the long-term work in the plan, so its design and its review get the most attention. How the program works shows where it sits.
In the reference case for a $4M home, you contribute $1,200,000 to the policy at the start, on top of an $800,000 down payment. That is $2,000,000 of capital committed at closing. From year 16, projected policy cash of $370,000 a year, taken through policy loans or withdrawals, is designed to fund the scheduled mortgage payment of $27,176.61 a month through year 30, and to continue through year 62.
The $370,000 is the illustrated input for the reference case, and your own comparison calls for a carrier illustration for the person who would actually be insured. The plan is built with margin. The scheduled mortgage payments come to $326,119 a year, so policy cash could come in 10% lower, at $333,000, and still cover every mortgage payment. Policy loans are a debt of their own, separate from the mortgage and from the bank’s premium-finance loan. Projected policy cash is paid during the insured’s lifetime. When the insured dies, the policy pays a death claim instead.
The mechanics on this page are the ones the team designs around. Every transaction is underwritten by the team before it is proposed. Each case is modeled under a conservative risk profile and run through simulations across many market paths. After closing, policy values, the bank loan and the collateral are reviewed every year against the plan, so adjustments are made early. The team has done hundreds of transactions, and that experience is the reason to have it underwrite and manage a plan built on a policy like this.
Ask for the guaranteed column and the alternate scale, and have your CPA and attorney review the proposal before anything is signed. Then see the comparison, read how the risks are managed, and read how premium financing works. Your CPA can start with the page for advisors.
