Life insurance

Indexed universal life, explained without the sales pitch

IUL credits interest tied to an index like the S&P 500, with a 0% floor and a cap. It is real insurance with real tax advantages, and it is also the most over-illustrated product in the market. Here is the candid version.

Get an IUL second opinion See how we work

Illustrations stress-tested to guaranteed values We will tell you when term is better AG 49-A rules explained plainly

undefined

Indexed universal life is permanent life insurance with a flexible premium and a cash value whose interest is linked to the movement of an index, most often the S&P 500 measured point to point over a year. If the index rises, you are credited interest up to a cap and adjusted by a participation rate. If the index falls, you are credited the floor, usually 0%. Carrier disclosure documents define the terms the same way: the participation rate is the percentage of index return used in the calculation, the cap is the maximum rate used, and the floor is the minimum.

That structure is genuinely attractive on paper: market-linked upside, no direct market loss, tax-deferred growth inside the policy, tax-free death benefit, and access to cash value through policy loans. It is also why IUL is sold aggressively, sometimes as a substitute for a Roth IRA or a "tax-free retirement plan," which it is not.

Two things determine whether an IUL policy works out, and neither is the index. The first is cost of insurance. The Wisconsin Office of the Commissioner of Insurance states it directly in its consumer alert on universal life: the cost of insurance charge is the main expense of a universal life policy, that charge rises as you age, and insurers can raise cost of insurance rates up to the guaranteed maximum in the contract. The second is funding discipline. A UL policy is a bucket with a hole in the bottom, and the premium you skip in year 12 shows up as a lapse notice in year 28.

We sell IUL. We also decline to sell it more often than we sell it, because the profile it fits is narrow: a high earner who has already maxed qualified plans, wants a permanent death benefit, will fund the policy at or near the maximum non-MEC limit for at least a decade, and can tolerate a decade of negative liquidity. If that is not you, term plus a taxable brokerage account usually wins.

The crediting mechanics

Four dials the carrier controls, and you do not

Every one of these can be changed by the insurer within contractual limits after you buy. That asymmetry is the core risk of the product.

Can be lowered

Cap rate

The maximum credited rate on an index segment. Industry caps on S&P 500 point-to-point strategies have compressed from roughly 12 to 13% in 2019 to about 8 to 9% on most 2026 products, tracking option costs and bond yields. Carriers can lower caps to a guaranteed minimum, often 3 to 4%.

Explore

Read together

Participation rate and spreads

The share of index movement you receive, plus any spread subtracted first. An uncapped strategy with a 40% participation rate is not more generous than a 9% cap; it is a different shape of the same option budget.

Explore

Protects index, not charges

Floor and reset

A 0% floor means an index loss credits nothing, not that your cash value cannot fall. Charges still come out in a 0% year. Annual reset means you start the next segment from the current index level, which helps after declines.

Explore

Scrutinize

Multipliers and bonuses

Some products add index multipliers funded by extra asset charges. AG 49-A specifically excludes multipliers, bonuses and experience refunds from the benchmark account used to cap illustrations, precisely because they inflated projections.

Explore

Rises with age

Cost of insurance

A monthly charge on the net amount at risk, priced on your attained age. It is small at 40 and large at 75. Carriers may raise it to the guaranteed maximum, which has happened on older UL blocks.

Explore

Where plans break

Loan mechanics

Distributions come out as policy loans. Participating or variable loans can be credited above their charge, creating arbitrage that looks great illustrated and can invert in practice, accelerating lapse.

Explore

What it costs

Where a $12,000 annual IUL premium actually goes

Directional allocation for a well-funded policy on a healthy 45-year-old, to show why early cash value lags premium.

Charge or credit	Early years, roughly 1-5	Middle years, 6-20	Later years, 21+
Premium load and policy fee	5-10% of premium plus a monthly fee	Same percentage, smaller relative bite	Same percentage
Per-thousand and admin charges	Heaviest here, often front-loaded 5-10 years	Usually drops off	Typically expired
Cost of insurance	Modest, large net amount at risk but young age	Rising each year with attained age	Largest single drag, can exceed credits
Amount credited to index accounts	Often 80-88% of premium after charges	88-95% of premium	Depends heavily on charges
Surrender charge if you exit	Commonly 8-15% of value, grading to zero over 10-15 years	Grading down	Usually zero
Realistic net cash value versus premiums paid	Below premiums paid	Crosses over somewhere in years 8-15	Compounds if the policy stays funded

Directional ranges based on charge structures disclosed in current carrier illustrations and prospectus-style summaries as of August 2026. Actual loads, surrender charge schedules and cost of insurance tables vary substantially by carrier, product, face amount, rate class and state. Nothing here is a projection of your policy.

Rating factors

What actually determines how an IUL turns out

None of these appear in the headline of a sales illustration, and all of them decide the outcome.

Get an IUL second opinion

How heavily you fund it. A policy funded near the guideline premium limit builds cash value that absorbs later cost of insurance. A minimally funded policy with a big face amount is a lapse waiting to happen.
The sequence of index returns. With a cap and a floor, a decade of modest positive years can outperform a decade with two great years and two crashes. Average return alone tells you almost nothing.
Cost of insurance trajectory. Wisconsin OCI cites a real case: a policy bought in 1985 and funded for level premiums to age 100 was reduced to funding only to age 80 after a 2019 cost of insurance increase. Guaranteed maximums are the only hard limit.
Whether you take loans, and how. Loan interest that compounds on a policy whose credits underperform is the classic failure mode. Ask for an in-force illustration every single year once distributions begin.
Cap and participation changes after issue. You are buying a product whose crediting parameters the carrier can reset. Look at the carrier's history of renewal caps on old blocks, not just the new-money cap.
Your discipline for 20 years. The SOA and LIMRA universal life lapse study found IUL lapse rates increased significantly across all policy years between 2015-2018 and 2019-2020, the only product type in the study to show consistently higher lapse rates during the pandemic.
Whether you needed permanent coverage at all. If the death benefit is not permanent-need, every dollar of cost of insurance is a fee you volunteered to pay for tax deferral you could have gotten elsewhere.

Illustration risk and what AG 49-A actually does

An IUL illustration is a spreadsheet, not a forecast. Before 2015 carriers competed on who could show the biggest number, using long historical lookbacks and loan arbitrage assumptions that were arithmetically possible and practically absurd. Regulators responded with Actuarial Guideline XLIX. The NAIC records the sequence: AG 49 in 2015, superseded by AG 49-A for policies sold on or after December 14, 2020, revisions effective in 2023 to tighten illustration limits, and further revisions effective in 2026 to enhance consumer protection disclosures.

The guideline itself is more specific than most agents will volunteer. It defines a Benchmark Index Account with a fixed set of features: crediting based only on the one-year point-to-point change in the S&P 500, an annual cap, a 0% annual floor, a 100% participation rate, interest credited once a year, and explicitly no enhancements that provide additional indexed credits, including experience refunds, multipliers or bonuses. The annual rate of indexed credits illustrated for that account may not exceed the lesser of two things: the arithmetic mean of geometric average annual credited rates across the required 25-year historical periods, or 145% of the carrier's Annual Net Investment Earnings Rate.

The 2025 revisions, adopted by the NAIC's Life Actuarial Task Force and Committee on November 13, 2025 and by Executive Committee and Plenary on December 11, 2025, add further illustration requirements in Sections 7.B through 7.D for policies sold on or after April 1, 2026, with optional early compliance from January 1, 2026. Practically, that means the IUL illustration you are handed in late 2026 is subject to tighter disclosure rules than the one your neighbor was shown in 2019.

What the rules do not do. AG 49-A caps how optimistic an illustration may look. It does not guarantee any credited rate, prevent a carrier from lowering caps after issue, prevent cost of insurance increases up to the guaranteed maximum, or make the illustrated column likely. Ask for three columns: guaranteed, illustrated, and illustrated minus two percentage points. If the plan only survives in the middle column, it is not a plan.

Question to ask	Why it matters
Show me the guaranteed column to age 95.	Reveals when the policy lapses on guaranteed charges and minimum crediting. Many IULs lapse in their 70s on that basis.
What is the minimum guaranteed cap and participation rate?	That, not the current 8-9% cap, is your contractual floor on upside.
What are the guaranteed maximum cost of insurance rates?	Sets the worst case the carrier may charge you later, as Wisconsin OCI warns.
Does the illustration assume loan arbitrage?	Positive spread between credited rate and loan charge is a common and fragile assumption.
What is the surrender charge schedule, year by year?	Determines what an early exit costs, often 8-15% of value in the first years.
Will you send an in-force illustration every year?	Annual monitoring is the only way to catch underfunding while it is still fixable.

Who IUL actually fits, and who should walk away

IUL can be the right answer for a specific person. That person usually looks like this: high, stable income; 401(k) and backdoor Roth already maxed; a permanent death benefit need such as estate liquidity, a business buy-sell or a special-needs dependent; willingness to fund the policy heavily for at least 10 years; comfort with illiquidity in the early years; and an advisor who will review an in-force illustration annually. For that buyer, tax-deferred accumulation plus a tax-free death benefit plus indexed crediting is a coherent complement to a portfolio.

Walk away if any of these are true

You need the death benefit only for 15 to 25 years. Buy level term and invest the difference. It is not a cliche, it is arithmetic.
You are being sold IUL as a Roth IRA replacement. Qualified plans, employer match and index funds cost a fraction of the internal charges. A cost of insurance charge is not an investment expense you should volunteer for.
You cannot commit to the target premium for a decade. Flexible premium means the carrier tolerates skipped payments, not that skipping is harmless. Underfunding is the leading cause of lapse.
The illustration relies on a multiplier, bonus or loan arbitrage. AG 49-A excluded exactly these features from the benchmark account for a reason.
You would need the cash value within 10 years. Surrender charges plus front-loaded expenses make early exit expensive, and a lapse with an outstanding loan can create taxable income with no cash to pay it.
Nobody has shown you the guaranteed column. Then nobody has shown you the product.

The lapse problem, in data

The 2015-2021 Universal Life Insurance Lapse Rate Experience Study from the Society of Actuaries Research Institute and LIMRA covers 24 companies, 33.5 million policy exposures, $8.5 trillion of face amount and 1.3 million lapse terminations. Its finding on this product is pointed: indexed universal life lapse rates increased significantly across all policy years between the earlier part of the study period and the later part, and IUL was the only product type to show consistently higher lapse rates during the pandemic than before it. A lapsed permanent policy pays nothing, having charged you cost of insurance for years.

If you already own an IUL

Do not surrender it on impulse. Request an in-force illustration at current assumptions and at guaranteed assumptions, check whether the policy is on track to the age you intended, and consider the fixes in order of cost: increase premium, reduce the face amount to lower cost of insurance, repay or restructure loans, use a 1035 exchange into a guaranteed universal life or a paid-up whole life design, or reduce paid-up. Surrendering with a gain above basis creates taxable income, and surrendering with an outstanding loan can create a large phantom gain. Talk to a tax professional first.

Availability, crediting strategies, loan provisions and free-look periods differ by state filing, so confirm the specifics for your state before you sign an application.

Sources & further reading

Learn first, buy second

Read these before buying an indexed policy

Comparison

Term vs. whole life insurance

Start here before comparing any indexed product. Most buyers stop here too.

Read the guide

Calculator

How much life insurance do I need?

Size the death benefit first, then argue about the chassis that delivers it.

Read the guide

Tax planning

Roth conversion basics

The tax-free retirement income conversation that usually should come first.

Read the guide

Questions

Frequently asked questions

Can I lose money in an indexed universal life policy?

Yes, though not from index losses directly. The floor, usually 0%, means a down year credits nothing, but premium loads, per-thousand charges, administrative fees and cost of insurance still come out of cash value that year. Combine a few 0% years with rising cost of insurance and an underfunded policy and the cash value can fall and the policy can lapse.

What is a realistic long-run credited rate?

Nobody can promise one. With caps on most 2026 products around 8 to 9% and a 0% floor, long-run credited rates in the 4 to 6% range before policy charges are a defensible planning assumption, and AG 49-A limits what an illustration may show to the lesser of a 25-year historical average and 145% of the carrier's net investment earnings rate. Your net return after charges is materially lower than the credited rate.

Is an uncapped strategy with a participation rate better than a cap?

Not inherently. Both are ways of spending the same option budget. A 45% participation rate on an uncapped S&P 500 strategy and a 9% cap at 100% participation can produce similar long-run results with different shapes: the participation design does better in big up years, the cap design does better in modest ones. Ask for historical backtests of both under current parameters.

How does AG 49-A protect me?

It limits how favorable an IUL illustration may look. It defines a benchmark S&P 500 account with a 0% floor, 100% participation and no multipliers or bonuses, and caps the illustrated indexed credit at the lesser of a 25-year historical mean or 145% of the carrier's annual net investment earnings rate. Revisions effective in 2026 add disclosure requirements. It does not guarantee performance or prevent later cap reductions.

Can the insurance company raise my costs after I buy?

Within contractual limits, yes. The Wisconsin insurance regulator warns that carriers can increase cost of insurance rates up to the guaranteed maximum in the policy, and cites a case where a 2019 increase cut a policy funded to age 100 down to age 80. Caps and participation rates can also be reset on renewal segments. Read the guaranteed maximums before you buy.

Should I use an IUL for tax-free retirement income?

Only after qualified space is exhausted and only if you also need a permanent death benefit. Policy loans can provide income that is not currently taxable, but a lapse with an outstanding loan can trigger tax on the full gain with no cash left to pay it. If tax-free retirement income is the goal, price a Roth strategy and a taxable index portfolio first.

What is the biggest mistake IUL buyers make?

Buying a large face amount with a small premium because it makes the illustration look affordable. That combination maximizes cost of insurance relative to funding and is the primary driver of the elevated IUL lapse rates found in the SOA and LIMRA study. If you buy IUL, buy the smallest death benefit that satisfies the need and fund it as heavily as the tax rules allow.

Send us the illustration. We will read the guaranteed column.

Free, no obligation, and we will tell you plainly if level term and an index fund would serve your goal better than the policy on the table.

Get an IUL second opinion