Principal IUL Accumulation II Review (2026)

How Principal IUL Accumulation II works

Principal Indexed Universal Life Accumulation II is indexed universal life insurance. It pays a death benefit when the insured dies. While the insured is alive, part of each premium builds a cash value that can earn interest tied to the S&P 500. Principal says it is the policy to consider if you want "more of an emphasis on growing cash value than in maximizing the amount of death benefit coverage." It is issued outside New York by Principal National Life Insurance Company, which AM Best rates A+ (Superior). For the company's ratings, ownership and record, see our Principal company review.

Here is the money flow in plain terms:

1. You choose how much to pay in, and can raise or lower payments later within limits.
2. Part of each payment covers the life insurance and its charges. Principal's brochure names mortality and expense risk charges and surrender fees as examples. The policy itself holds the details.
3. The rest builds your cash value. You split it among a fixed account and up to three index-linked accounts.
4. At the end of each 12-month period, each index account earns a credit based on the S&P 500, up to its cap and never below 0%.
5. Later, you can take partial surrenders or policy loans, often as supplemental retirement income.

The key point: the 0% floor protects the interest credit, not your cash value. Principal's brochure says it directly: "Policy charges are still assessed so your policy value can decrease." In a year the index falls, the credit is 0%, but the monthly charges still come out.

Principal is also clear that the policy "is not an investment in the stock market." It is life insurance. If you are weighing it against an investment account, read is IUL a good investment first.

Who Principal sells it to

Principal's 2025 annual report says it narrowed its life business to the business market in 2021 and stopped selling to retail consumers. Its buyers are mostly owners, executives and key employees of small and medium-sized businesses. That shows up in this policy's riders: a Salary Increase Rider for business cases and an Alternate Surrender Value Rider for business-owned policies. You can still buy it for personal reasons, and the brochure's own example is a family, but expect to meet it through a business or executive benefit conversation.

Index accounts and current rates

Accumulation II offers three index-linked accounts plus the fixed account. All three use the S&P 500 and measure it over 12 months.

Current caps are available on request. Principal does not publish Accumulation II's caps in its consumer brochure or on its public website, and we found no public, dated consumer document that lists them. Ask for the current cap on each account, and the guaranteed minimum cap written into your policy, on the date of your illustration. We will not guess.

Principal's introduction to IUL adds that the participation rate is "guaranteed to not be less than 100%." The Accumulation II brochure guarantees the index accounts will never credit less than 0%.

What the terms mean

• Cap: the most an account can credit in a 12-month period.
• Participation rate: the share of the index gain that counts. At 100%, a 5% gain counts as 5%, up to the cap.
• Floor: the lowest possible credit. Here it is 0%.
• Monthly average: the Total Return account compares the starting value with the average of 12 monthly readings. Averaging smooths out swings, which helps in a choppy year. In a year the market climbs steadily, the average sits below the year-end value, so the credit is usually smaller than a point-to-point measure would give. Dividends partly offset that.

The High Cap tradeoff

The High Cap account buys a higher cap with an up-front charge. Principal's brochure does not state the charge, so ask for it. Here is how the math works, using a made-up 1% charge:

• If the index rises well past the regular cap, the higher cap can more than pay for the charge.
• If the index rises a little, you may end up with less than the regular account would have credited.
• If the index falls, the account credits 0% and you have still paid the 1%. The account loses value before any other policy charge.

That makes the High Cap account a bet on strong years. It is not a bad option, but it is not the "safe" one.

Hypothetical crediting examples

These examples are hypothetical. They use the assumptions in Principal's own introduction to IUL (a 100% participation rate, an 8% cap and a 0% floor), not current rates. They leave out all charges.

In a strong year you give up everything above the cap. In a down year the floor is what you get, and the policy's charges still come out. Our guide to IUL index crediting methods goes deeper.

The Accumulated Value Enhancement

From policy year 11, Principal adds 0.25% a year to the policy's cash value, on top of your account credits, as long as the fixed account is crediting more than its 1% guaranteed minimum. Principal notes it may not be available in all states. It is a small, late bonus, and it depends on the fixed account rate, which Principal sets. Do not let it drive the decision. See IUL bonuses and multipliers.

Charges

Principal's consumer brochure does not list Accumulation II's charges or amounts. It says life insurance products "charge fees such as mortality and expense risk charges and surrender fees," that surrender charges and other policy charges may apply to distributions, and that the High Cap account takes a stated percentage each year. Ask for every charge, current and guaranteed maximum, on a signed illustration before you apply:

Our guides to IUL fees and charges and IUL surrender charges explain what normal looks like.

Loans and withdrawals

You can take money out through partial surrenders, policy loans or both. Principal also offers automated distributions: pick how often you want payments, send one form, and payments continue until you stop them or you have received all the value available.

An alternate loan is a bet that your credits will beat the loan rate. Principal's brochure warns that it "carries more risk to the policy's performance due to the potential for a more expensive loan," and suggests asking for illustrations that compare the two types. Take that advice. A few 0% years in retirement can grow an alternate loan faster than you planned. See IUL policy loans and loans vs withdrawals.

Principal's brochure also warns that unpaid loan interest can cause the policy to terminate, and that income tax would then be due on the income you received from the loan.

Taxes. While the policy stays in force and is not a modified endowment contract (MEC), partial surrenders up to your premiums paid are generally not taxed, and loans are not taxed. A policy that takes too much premium too fast in its first seven years becomes a MEC, and then loans and withdrawals are taxed as gain first, with a 10% extra tax before age 59 and a half, with certain exceptions. The biggest risk is a lapse: if the policy ends with a loan outstanding, the gain above your premiums becomes taxable income that year. Principal's brochure notes there is no penalty for withdrawals before 59 and a half, which is true only while the policy is not a MEC. See IUL taxes.

Riders and built-in features

Base riders, included automatically where available and at no added charge unless used:

• Chronic Illness Death Benefit Advance Rider: lets you take part of the death benefit early if you cannot perform two of six daily activities for at least 90 days and the condition is permanent, or you need substantial supervision because of a permanent severe cognitive impairment. The lifetime maximum is the lesser of 75% of the eligible amount or $2 million. Each payment is discounted for early access and reduces the death benefit. It is not long-term care insurance. See IUL chronic illness riders.
• Terminal Illness Death Benefit Advance Rider: an early payout on a terminal diagnosis. The advance is a lien that accrues interest, which reduces what your beneficiary receives.
• Life Paid-Up Rider: Principal calls it "a built-in safety net" that activates when certain conditions are met to help keep a heavily borrowed policy from lapsing and creating a tax bill. Ask for the conditions in writing. See overloan protection.
• Cost of Living Increase Rider: lets you raise coverage to keep pace with inflation without new underwriting.

The chronic and terminal illness riders are not available in Massachusetts.

Optional riders, at a cost: an Alternate Surrender Value Rider that gives business-owned or sponsored policies higher early cash surrender values, a Salary Increase Rider for business cases, and a Waiver of Monthly Policy Charge Rider that covers the monthly charges, not the full premium, if you become disabled.

No-lapse guarantee. The Accumulation II consumer brochure does not list an extended no-lapse guarantee rider. Principal offers one on IUL Flex II. If a guaranteed death benefit matters to you, ask what guarantee, if any, applies here. See no-lapse guarantee rider.

Flexibility. You can raise or lower the death benefit later; an increase may need new underwriting. The three death benefit options are the face amount, the face amount plus cash value, or the face amount plus premiums paid less withdrawals.

How the illustration is built

You will decide on this policy by reading an illustration, a year-by-year projection of premiums, cash values and death benefits. Principal's brochure says you will review one "to see how your policy might perform in different hypothetical scenarios." The guaranteed column assumes maximum charges and minimum credits. The non-guaranteed column assumes today's charges and an illustrated rate held level for decades.

The NAIC's AG 49-A limits how high that illustrated rate can be and how much extra credit bonuses and loan arbitrage can receive in the projection. Principal does not publish Accumulation II's maximum illustrated rate in consumer materials, so ask for it. Our own rule for hypotheticals is to stay at or below the AG 49-A limit and never above 6.5%. We also suggest running a second illustration 1 to 2 points lower, and one using the alternate loan next to one using the standard loan.

Our guide on how to read an IUL illustration walks through each column.

Who Principal IUL Accumulation II fits

• You own a business or are an executive, and want life insurance inside a key person, buy-sell or executive benefit plan. See IUL for business owners.
• You need permanent life insurance and have already used cheaper tax-advantaged options, such as a 401(k) match and an IRA. See IUL vs 401(k).
• You can fund the policy well for many years. That is what max-funded IUL means.
• You want a simple, S&P 500 only policy from an A+ rated carrier.
• You are comfortable judging it from an illustration rather than published rates.

Who should look elsewhere

• You want to compare published caps first. Principal does not publish them or their history.
• You may need the money back early. Surrender charges apply, and Principal does not publish how long they last.
• You mainly want a death benefit at the lowest cost. Term insurance, guaranteed universal life, or Principal's own IUL Flex II is built for that.
• You cannot commit to steady premiums. Underfunded accumulation IULs are the ones that lapse. See IUL lapse risk.
• You want a cap that cannot drop. Principal can change the caps on this policy. The guaranteed minimum cap in the policy is the only floor under the cap.
• You live in New York. Principal National Life does not issue policies there.
• You are a family buyer with no business connection. Principal says it ceased sales to the retail consumer market in 2021. Ask up front whether the policy is available to you, and compare carriers that sell to individual buyers.

To see how Accumulation II stacks up against other accumulation designs, use our IUL comparison tool or see the best IUL for cash accumulation.