Indexed Universal Life (IUL) insurance is a type of permanent life insurance with a cash value component that grows based on a stock market index, like the S&P 500. It offers tax-deferred growth and protection from market losses, but returns are subject to cap/participation rates.

As the IUL market expanded over time, the need for regulation and transparency grew. In 2015, Actuarial Guideline 49 (AG 49) was created to prevent carriers from projecting unrealistically high returns. It also limited illustratable loan spreads to 1%.

In response, insurers began using add-on features — like multipliers & asset charges and internal bonuses — to show higher projected returns without violating AG 49. Volatility-control indices, for example, were promoted for their “steady returns,” which often allowed higher illustrated rates.

To counter these new tactics, regulators introduced AG 49-A in 2020. This major revision further closed loopholes and set further IUL illustration limits on how policies can be presented and advertised. They also targeted non-guaranteed bonuses and reduced the allowable loan spread on illustrations to 0.5%.

How IUL Works

When you pay your premium, part of that money covers the cost of the insurance and administrative fees. The rest goes into a savings account, called the cash value. This cash value earns interest tied to the performance of a stock market index, like the S&P 500.

However, your money is not invested in the market. Instead, your insurer uses the index’s performance as a reference to calculate how much interest to credit is. The amount you earn depends on limits called caps and participation rates, which the insurance company sets.

If the market loses value, your existing cash value typically remains the same (but still subject to ongoing fees and charges).. If the market goes up, you get a portion of the gain. However, that portion is normally less than what the stock market delivered since these policies:

  • don’t include dividends
  • often cap the maximum rate payable
  • often have less than a 100% participation rate (the share of the index’s gain)

How a policy performs depends on many factors like premium funding, market behavior, and illustrated rate realism. These variables help decide whether the policy stays healthy or starts to fall behind.

A premium adequacy stress test by an independent insurance analyst can uncover policy pitfalls early, helping clients avoid unnecessary policy expenses or prevent a lapse year down the road.

The Five Assumptions That Change Everything

IUL is one of the more complex financial products you can buy and the illustrations your agent shows you are not guarantees. Their projections are based on assumptions that may or may not match reality.

There are five important assumptions that can shape an Indexed Universal Life (IUL) illustration.

  1. Cap/Participation Rate – how much of the index’s gain is credited to the policy. The cap is the maximum interest credited, the participation rate is the percentage of the index’s gain you receive (e.g., 80% of a 10% gain is 8% credited). Illustrations that show a higher cap rate or a higher participation rate will always look better.
  2. Loads & COI (Cost of Insurance) – internal policy expenses deducted before interest is credited. Lower assumed costs make the illustration appear more profitable.
  3. Loan Rate (Wash/Variable) – the assumed interest rate for borrowing against cash value. In a wash loan, the charged interest rate is the same as the credited interest rate, resulting in a net zero cost. In a variable loan, both the interest rate and the cash value credit rate can fluctuate.
  4. Crediting Method (Annual Point-to-Point/Monthly Sum) – how interest is calculated and credited either yearly or monthly.
  5. Funding Pattern & Timing – when and how premiums are paid. Paying consistently and early builds cash value faster.

When reviewing illustrations, pay attention to the fine print. Most illustrations show three scenarios: guaranteed (only the minimum 1-2% rate), hypothetical mid-point and current caps and charges, often the maximum allowable illustration rate.

Never base your decision solely on a hypothetical scenario, which assumes perfect market conditions for decades. And if neither scenario meets your needs, the policy probably isn’t right for you.

Stress-Test Your Policy Before It’s Too Late

One of the biggest threats to an active IUL policy is performing in-force at lower crediting (-200-300 bps). If the credit rate is consistently lower than the original illustration assumed, the cash value can’t keep pace with the increasing cost of insurance (COI) charges.

This poor performance causes a sequence-of-returns risk, quickly shrinking the loan stress & lapse margin of safety needed to keep the policy active. Many older contracts also have structural problems, specifically shadow-account vs. NLG conflicts, (no lapse guarantee) which can unexpectedly cause large premium increase triggers later on.

Confused about IUL? Need help with an existing IUL policy? Call Stratus Financial Partners today to review and stress-test your policy with an independent life insurance consultant. We help hundreds of clients create a Stratus action plan so they gain absolute confidence in their policy’s performance.

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