Cook Islands

Tax-deferred employer plans

The Cook Islands National Superannuation Fund (CINSF) is a mandatory contributory scheme requiring employers and employees to make contributions toward retirement savings. The fund is managed by the Cook Islands National Superannuation Fund Board and provides retirement benefits to qualifying members.

The CINSF is a funded scheme with member accounts, which distinguishes it from pure pay-as-you-go social insurance. Whether the fund is a trust at all is a §301.7701-4(a) question: whether a trustee holds assets for identifiable beneficiaries. If the fund operates as a trust, it is a foreign trust under §301.7701-7: administered in the Cook Islands with no U.S. court exercising primary supervision.

Rev. Proc. 2020-17 does not require a treaty, so the absence of a U.S.–Cook Islands income tax treaty does not by itself disqualify the CINSF. Whether it qualifies instead depends on whether it independently satisfies the revenue procedure's conditions (including local tax treatment, contribution limits, withdrawal restrictions tied to retirement age, disability, or death, and, for employer-maintained plans, nondiscrimination), which requires fund-specific analysis. The exemption is available only to an ‘eligible individual’ under §5.02: someone who is compliant (or comes into compliance) with U.S. income-tax filing and has reported the plan’s contributions, earnings, and distributions as income to the extent U.S. law requires; a participant who never reported plan earnings cannot rely on it until they do.

Absent a qualifying exemption, U.S. participants in the CINSF to the extent it is classified as a foreign trust file as the note at the end of this section explains for a plan an employer contributes to.

For a plan an employer contributes to, a trust holding it is generally a nonexempt employees’ trust described in §402(b). §6048(a)(3)(B)(ii) excepts transfers to §402(b), §404(a)(4), and §404A trusts from Part I, the participant’s own contributions included, and §679 does not make the participant the owner (see the Reporting Guide’s employer-plan section). Payouts the participant reports as compensation income are excepted from Part III. If the participant’s own contributions ever exceed the employer’s, the participant is treated as the owner of the part those contributions fund (Treas. Reg. §1.402(b)-1(b)(6)), reports it on Part II and Form 3520-A each year it is owned, and is taxed on its income each year. In that count, what the participant chose to put in, salary sacrifice included, is the participant’s, and anything the plan’s rules required taken from pay is the employer’s, as the IRS chief counsel read a national retirement fund in 1997. The rest is taxed when it vests and, after that, when paid out (§402(b)(1), (2)).

Trust law framework

The Cook Islands International Trusts Act 1984 (as amended) is the foundational statute for international trusts in the jurisdiction. The Cook Islands, a self-governing territory in free association with New Zealand, pioneered the modern offshore asset protection trust and remains the most frequently cited jurisdiction for this purpose.

The Cook Islands does not impose income tax on international trusts (trusts where the settlor and beneficiaries are non-residents and the trust property is outside the Cook Islands). There is no U.S.–Cook Islands income tax treaty. For U.S. tax purposes, Cook Islands trusts are foreign trusts under Treas. Reg. §301.7701-7.

Asset protection features

The International Trusts Act includes provisions that make Cook Islands trusts exceptionally difficult for creditors to attack. Under its statute of limitations for fraudulent disposition claims, a settlement made more than two years after the creditor’s cause of action accrued generally cannot be attacked as fraudulent by that creditor; if made within those two years, the creditor must sue within one year of the settlement. There is no discovery rule, and the creditor must prove the case beyond a reasonable doubt, the criminal standard of proof rather than the civil preponderance standard. Foreign judgments, including U.S. court judgments, are not enforceable against a Cook Islands trust.

These features make the Cook Islands the most commonly chosen jurisdiction for U.S. persons establishing asset protection trusts. However, U.S. courts have ordered U.S. settlors to repatriate assets from Cook Islands trusts, and have imposed contempt sanctions (including imprisonment) on settlors who fail to comply. The trust's legal protections under Cook Islands law do not shield the U.S. settlor from the jurisdiction of U.S. courts.

For U.S. tax purposes, the asset protection features do not alter the trust's classification or the settlor's reporting obligations. A Cook Islands trust is a foreign trust, and the U.S. settlor is the owner under §679(a)(1) whenever the trust has a U.S. beneficiary, whether or not the settlor retains any benefit or power.

Penalties and practical notes

The transfer of assets to a Cook Islands trust triggers Form 3520 Part I (§6048(a)). Because a U.S. settlor is the owner under §679(a)(1) whenever the trust has a U.S. beneficiary (which almost always includes the settlor or family), the trust is nearly always a grantor trust, requiring annual Form 3520-A and Form 3520 Part II (§6048(b)). Distributions to U.S. beneficiaries require Part III reporting (§6048(c)). The same framework applies to U.S. participants in the Cook Islands National Superannuation Fund to the extent it is classified as a foreign trust.

Penalties under §6677(a) are the greater of $10,000 or 35% of the gross reportable amount for Parts I and III. Under §6677(b), the penalty for Part II and Form 3520-A is the greater of $10,000 or 5% of the gross reportable amount.

Practitioners should be aware that the IRS and DOJ have devoted significant enforcement resources to offshore asset protection trusts. Willful failure to file, or willful underreporting, can result in additional penalties, including criminal penalties under IRC §7206 for filing a false return or §7203 for willful failure to file.

Practical considerations

Cook Islands trust companies are licensed by the Financial Supervisory Commission and are required to maintain adequate records. However, obtaining trust financial information for Form 3520-A purposes can be challenging if the trustee is not familiar with U.S. requirements or is reluctant to share information (particularly when the trust is designed to limit the settlor's access to information as part of the asset protection strategy).

Practitioners should establish the trust's U.S. reporting framework at the time the trust is created, including securing the trustee's agreement to cooperate with U.S. filing requirements or, alternatively, ensuring that the U.S. owner has sufficient access to trust records to prepare a substitute Form 3520-A.