The Benefits of Indexed Universal Life Insurance (IUL)

Published

Jan 30, 2024

Last Updated

Aug 10, 2026

Educational and Insurance Disclosure: This article is provided for general educational purposes only. It does not constitute life insurance, investment, retirement, tax, legal, estate-planning, or financial advice. State Employee Advisor Network is a marketing and referral platform operated by Revenx LLC. SEAN does not sell life insurance, recommend IUL policies, determine insurance needs, select investments, or provide individualized financial recommendations. Policy guarantees depend on the claims-paying ability of the issuing insurance company. Product terms, charges, illustrations, tax treatment, and suitability should be reviewed through the insurer, a properly licensed professional, tax professional, or another qualified source.

Indexed Universal Life insurance, or IUL, is a type of permanent life insurance that combines a death benefit with a cash-value component.

The cash value may receive interest credits based partly on the performance of one or more external market indexes.

However, an IUL policy is not the same as investing directly in an index fund.

The policyholder generally does not own:

  • Stocks in the S&P 500
  • Shares of the referenced index
  • Index dividends
  • A brokerage account inside the policy

Instead, the insurer applies an interest-crediting formula defined in the contract.

Whether an IUL is useful depends on its insurance purpose, premiums, charges, index-crediting terms, liquidity needs, tax status, and long-term policy performance.

What Is Indexed Universal Life Insurance?

IUL is a form of universal life insurance.

It generally includes:

  1. A life insurance death benefit
  2. A policy cash value
  3. Flexible-premium features within contract limits
  4. Interest-crediting options linked to external indexes

Universal life differs from traditional whole life because premiums and certain policy values may be more flexible.

That flexibility also places more responsibility on the policy owner.

The policy must maintain enough value to cover:

  • Cost of insurance
  • Administrative charges
  • Rider costs
  • Other contract expenses

If the policy does not receive enough premiums or cash value becomes insufficient, additional premiums may be needed to keep coverage in force.

How Index Crediting Works

The live article says IUL cash value growth is tied to a stock-market index such as the S&P 500.

That is broadly true, but the mechanism requires explanation.

The insurer generally calculates interest using a formula that may include:

  • Index starting value
  • Index ending value
  • Participation rate
  • Cap
  • Spread
  • Floor
  • Crediting period

Participation rate

A participation rate determines how much of a positive index change is considered.

For example, if:

  • Index gain = 10%
  • Participation rate = 80%

the starting credited rate may be 8% before any other limitations.

Cap

A cap limits the maximum index-based interest credited during a period.

If the index rises 15% but the policy has a 9% cap, the credited rate may be limited to 9%.

Spread

Some strategies subtract a specified percentage from the calculated index return.

For example:

  • Index result = 10%
  • Spread = 2%

The credited result may be 8%, subject to other terms.

Floor

Many IUL strategies use a 0% floor on the index-crediting calculation.

That can prevent a negative index movement from producing negative index interest for that segment.

It does not mean the total policy value cannot decline.

A 0% Floor Does Not Mean Zero Loss

This is one of the most important corrections to the existing article.

Suppose the index-crediting rate for a year is 0%.

The policy may still deduct:

  • Cost-of-insurance charges
  • Administrative expenses
  • Rider charges
  • Loan interest
  • Other policy expenses

As a result, cash value can decline even when the index-crediting floor is 0%.

Therefore, statements such as “your cash value cannot decrease in a bad market year” can be misleading.

The floor typically applies to the interest-crediting formula, not every component of policy performance.

Potential Benefit 1: Permanent Life Insurance Coverage

An IUL is designed as permanent life insurance rather than temporary term coverage.

If the contract remains in force, it may provide a death benefit for the insured's lifetime under the policy terms.

This can be relevant when there is a long-term insurance need involving:

  • Income replacement
  • Survivor support
  • Estate liquidity
  • Business obligations
  • Final expenses
  • Legacy goals

Permanent coverage is not automatically better than term insurance.

A person who primarily needs income replacement for a limited number of working years may find that term insurance serves a different purpose at a lower initial premium.

The appropriate comparison should begin with the insurance need rather than the cash-value feature.

Potential Benefit 2: Flexible Premium Structure

Universal life policies generally allow some flexibility in how premiums are paid, subject to the contract.

This may allow a policyholder to:

  • Pay more in some periods
  • Pay less in others
  • Adjust funding within permitted limits

But “flexible premium” does not mean premiums are optional indefinitely.

If premium payments are too low relative to:

  • Policy charges
  • Death benefit
  • Interest credits
  • Outstanding loans

the policy may need additional funding.

An illustration showing a planned premium does not necessarily mean that amount is contractually guaranteed to keep the policy in force for life.

Ask the insurer to identify:

  • Planned premium
  • Minimum premium
  • No-lapse premium when applicable
  • Guaranteed values
  • Non-guaranteed values

Potential Benefit 3: Tax-Deferred Cash-Value Growth

Cash value inside a life insurance policy generally grows without annual federal income taxation while it remains within the contract.

This is commonly described as tax-deferred growth.

That does not mean all future distributions are tax-free.

Tax treatment can depend on:

  • Policy basis
  • Withdrawals
  • Loans
  • Surrender
  • Lapse
  • Modified endowment contract status
  • Transfer-for-value rules
  • Other circumstances

If a life insurance policy is surrendered for cash, the IRS generally treats the amount received above the policyholder's cost in the contract as taxable income.

Tax treatment should therefore be described as conditional rather than as a guaranteed tax-free benefit.

Potential Benefit 4: Access to Cash Value

IUL policies may permit access to accumulated cash value through:

  • Withdrawals
  • Policy loans
  • Partial surrenders

This can provide liquidity without fully surrendering the policy.

However, access has consequences.

A withdrawal may:

  • Reduce cash value
  • Reduce death benefit
  • Affect future policy performance
  • Create taxable income in some circumstances

A policy loan may:

  • Accrue interest
  • Reduce available cash value
  • Reduce the death benefit if unpaid
  • Increase lapse risk

A loan is not free money.

The insurer should provide current loan terms, including:

  • Loan interest rate
  • Credited interest treatment
  • Available loan amount
  • Effect on death benefit
  • Effect on guarantees

Policy Loans Can Create Tax Risk

Marketing discussions sometimes describe policy loans as tax-free retirement income.

That statement requires significant qualification.

A loan from a life insurance policy may not create taxable income when properly structured and when the policy remains in force.

But an outstanding loan can create problems if the policy later:

  • Lapses
  • Is surrendered
  • Becomes taxable under applicable rules

A lapse with substantial gain and outstanding loans can potentially create taxable income even when the policyholder does not receive additional cash at that time.

Modified endowment contracts also follow different distribution and loan rules.

An IUL should not be purchased based solely on an assumption that future policy loans will always provide tax-free income.

Modified Endowment Contract Rules

A life insurance policy can become a Modified Endowment Contract, or MEC, if it fails the federal 7-pay test or meets another applicable statutory condition.

A MEC remains life insurance, but distributions receive less favorable tax treatment.

For a MEC:

  • Certain distributions are generally treated as earnings first
  • Policy loans can generally be treated as distributions for tax purposes
  • A taxable distribution before age 59½ may also face an additional federal tax unless an exception applies

Funding an IUL aggressively to increase cash value can therefore require monitoring of MEC limits.

The insurer should identify whether proposed premiums could cause MEC status.

Potential Benefit 5: Death Benefits Are Generally Income-Tax-Free

The IRS generally states that life insurance proceeds paid to a beneficiary because of the insured's death are not included in gross income.

Exceptions and special rules can apply, including:

  • Interest paid on proceeds
  • Certain transfers for value
  • Reportable policy sales
  • Other specialized situations

Death-benefit tax treatment should not be described as universally tax-free in every circumstance.

Estate-tax and ownership considerations can also be separate from income-tax treatment.

Potential Benefit 6: Different Death-Benefit Structures

Universal life policies may provide different death-benefit options.

Common structures can include:

Level death benefit

The stated death benefit generally remains level while the relationship between cash value and insurer net amount at risk changes.

Increasing death benefit

The death benefit may generally equal the specified face amount plus accumulated cash value, subject to contract terms.

An increasing benefit can require higher insurance charges because the insurer may maintain a larger amount at risk.

Changing the death-benefit option can also affect:

  • Premium requirements
  • Policy charges
  • Tax testing
  • Future cash value

The insurer should provide an updated illustration before a significant change.

Potential Benefit 7: Optional Living-Benefit Riders

Some IUL policies may offer accelerated death-benefit or other riders involving:

  • Terminal illness
  • Chronic illness
  • Critical illness
  • Long-term-care-related events

Availability varies by insurer and state.

These riders can include:

  • Eligibility definitions
  • Waiting periods
  • Benefit limits
  • Charges
  • Effect on death benefit

An accelerated benefit generally uses part of the policy's death benefit during the insured's lifetime.

It should not automatically be described as equivalent to health insurance, disability insurance, or long-term care insurance.

Tax treatment can also depend on the rider and circumstances.

Policy Charges Matter

IUL policies can contain several costs.

Possible charges include:

  • Cost of insurance
  • Premium expense charge
  • Administrative fee
  • Policy charge
  • Rider charge
  • Surrender charge
  • Loan interest

Cost-of-insurance charges can increase as the insured gets older.

This is important because an illustration showing strong early cash-value growth may not reflect what happens if:

  • Crediting rates are lower
  • Premiums are reduced
  • Loans are taken
  • Insurance costs rise

A long-term policy should be reviewed using both favorable and less favorable assumptions.

Caps and Participation Rates Can Change

The live article mentions caps but does not explain that many policy terms used for current index crediting are not guaranteed permanently at their initial level.

Depending on the contract, the insurer may be able to change:

  • Cap rates
  • Participation rates
  • Spreads
  • Available index strategies

within contractual limits.

For example, a policy illustrated with a 10% cap at issue may not necessarily maintain a 10% cap for decades.

Ask which values are:

  • Guaranteed
  • Current
  • Subject to insurer change

This distinction can materially affect projected cash value.

Life Insurance Illustrations Are Not Forecasts

IUL sales commonly use policy illustrations.

NAIC explains that a basic life insurance illustration contains both:

  • Guaranteed elements
  • Non-guaranteed elements

Non-guaranteed values can include projected cash accumulation and other future policy values.

They are not promises that the policy will achieve the illustrated results.

For index-based life insurance, NAIC uses Actuarial Guideline 49-A to regulate how non-guaranteed index-based values can be illustrated.

Updates effective in 2026 strengthened consumer disclosures for indexed life illustrations.

A policyholder should compare:

  • Guaranteed column
  • Current illustrated column
  • Premium assumptions
  • Loan assumptions
  • Death benefit
  • Cash surrender value
  • Charges
  • Crediting assumptions

The most attractive illustrated column is not necessarily the most realistic outcome.

Ask for In-Force Illustrations After Purchase

A policy should not be placed in a drawer and ignored for decades.

An in-force illustration can help show how the policy is performing based on its current status.

Periodic reviews may examine:

  • Current cash value
  • Cash surrender value
  • Death benefit
  • Premiums paid
  • Current index-crediting assumptions
  • Policy charges
  • Outstanding loans
  • Projected lapse age

A policy originally expected to remain in force to age 100 or 120 may need additional premiums when actual experience differs from the original assumptions.

IUL vs. Term Life Insurance

Feature IUL Term life
Coverage period Potentially permanent Specified term
Cash value Yes Generally no
Premium structure Flexible within policy rules Generally fixed for stated term
Index-linked crediting Yes No
Complexity Higher Lower
Policy charges Multiple possible charges Generally simpler
Initial cost Often higher Often lower

Neither type is universally better.

The primary question is what insurance need must be covered and for how long.

IUL vs. Direct Investing

An IUL should not be described as a substitute for owning the stock market.

The policyholder generally:

  • Does not own the index
  • Does not receive index dividends
  • May face a cap
  • May face a participation rate
  • Pays insurance-related charges

In exchange, the policy can provide life insurance and contractual crediting protections that a direct stock investment does not provide.

The two products serve different purposes and should not be compared solely on an illustrated rate of return.

State Employees Should Review Existing Benefits First

State employees may already have:

  • Group life insurance
  • Pension survivor benefits
  • 403(b)
  • Governmental 457(b)
  • 401(a)
  • Social Security
  • Other workplace benefits

Before purchasing permanent life insurance, review:

  • Existing death benefits
  • Beneficiary needs
  • Pension survivor election
  • Group coverage portability
  • Household debts
  • Dependent needs
  • Retirement assets

An additional permanent policy may or may not address a gap.

Life insurance and retirement savings should not automatically be treated as interchangeable goals.

Questions to Ask Before Buying an IUL

  1. What insurance need does this policy solve?
  2. What death benefit is guaranteed?
  3. What premium is guaranteed to maintain coverage?
  4. What policy charges apply?
  5. How do insurance charges change with age?
  6. What is the current cap?
  7. What is the guaranteed minimum cap?
  8. Can the participation rate change?
  9. Are index dividends included?
  10. What happens during a 0% crediting year?
  11. What are the surrender charges?
  12. How do policy loans work?
  13. What interest rate applies to loans?
  14. Can a loan cause the policy to lapse?
  15. What happens tax-wise after a lapse?
  16. Could planned premiums create a MEC?
  17. Which values in the illustration are guaranteed?
  18. How is the insurance professional compensated?
  19. What happens if premiums stop?
  20. Can I request annual in-force illustrations?

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SEAN is not an insurance company, insurance agency, registered investment adviser, broker-dealer, tax firm, law firm, or pension administrator. It does not sell IUL policies or provide insurance, investment, pension, tax, legal, or retirement advice.

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Schedule a free introduction to an independent professional.

Final Thoughts

Indexed Universal Life insurance combines permanent life insurance with cash-value crediting linked to external indexes.

Potential features can include:

  • Permanent death-benefit coverage
  • Flexible premiums
  • Tax-deferred cash-value accumulation
  • Policy loans and withdrawals
  • Different death-benefit options
  • Optional living-benefit riders

Those features also come with important limitations.

An IUL may involve:

  • Policy charges
  • Rising insurance costs
  • Surrender charges
  • Caps
  • Participation rates
  • Changing crediting terms
  • Loan interest
  • Lapse risk
  • Tax consequences

A 0% index floor does not guarantee that cash value cannot decline, and an illustration does not guarantee future policy performance.

The relevant comparison is whether the specific policy's insurance benefit, guarantees, costs, liquidity, tax treatment, and non-guaranteed assumptions fit the person's actual insurance needs.

FAQs

What Is Indexed Universal Life Insurance?

IUL is permanent universal life insurance with cash value that may receive interest credits based partly on an external market index.

Does an IUL Invest Directly in the S&P 500?

No. The policy generally uses an index to determine interest credits under a contractual formula. The policyholder does not own the index or its stocks.

Can IUL Cash Value Lose Money?

Yes. A 0% index floor may prevent negative index interest, but policy charges, loans, withdrawals, and other costs can reduce cash value.

Are IUL Withdrawals and Loans Tax-Free?

Not automatically. Tax treatment depends on policy basis, MEC status, withdrawals, loans, surrender, lapse, and other factors.

Are IUL Death Benefits Tax-Free?

Life insurance death proceeds are generally excluded from federal gross income, but exceptions can apply.

What Happens if an IUL Is Underfunded?

Cash value may become insufficient to cover policy charges, requiring additional premiums. Without adequate value or applicable guarantees, the policy can lapse.

Are IUL Illustration Returns Guaranteed?

No. Illustrations contain guaranteed and non-guaranteed values. Index-based projected values are not promises of future performance.

Is an IUL Better Than Term Life Insurance?

Neither is universally better. Term and IUL serve different insurance needs, costs, durations, and financial objectives.

Jeremy Haug

Jeremy contributes regularly to State Employee Advisor Network. With a deep understanding of state pension systems and public-sector benefits, he offers readers insights and strategies to optimize their retirement outcomes.

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