CRS reporting and your Cook Islands trust

Written and reviewed by Connor SteensJohn Evans
Updated
Flag of the Cook Islands
Asia PacificCook Islands
Participates
Cook Islands in CRS
Since 2017
What is exchanged
Account details, balances, income
Automatically
Who receives it
IRS for US settlors
And other relevant authorities
Implication
IRS already has the data
Voluntary filing is not optional

What CRS is

The Common Reporting Standard is an OECD framework for the automatic exchange of financial account information between tax authorities. Over a hundred jurisdictions participate, including the Cook Islands. Each participating jurisdiction requires its financial institutions to identify accounts held by residents of other participating jurisdictions and report that information to their domestic tax authority, which then exchanges it automatically with the tax authorities of the relevant account holders' home countries.

The Cook Islands joined the CRS automatic exchange framework. Banks and other financial institutions in the Cook Islands, including those holding Cook Islands trust accounts, are subject to the reporting obligations. A US settlor's trust account information is reported to the Cook Islands FSC, which forwards it to the IRS.

What is reported

CRS reporting covers the account holder's name and tax identification number, their country of tax residence, the account number, the account balance or value at year end, and the income credited to the account during the year — interest, dividends, gross proceeds from sales, and other income. For a Cook Islands trust account where the settlor is the reportable person, this means the IRS receives information about the trust account's existence, balance, and income each year.

The reporting is at the account level rather than the trust level. A trust with multiple accounts at different institutions generates separate CRS reports from each institution. The information provided to the IRS through CRS is not identical to what Forms 3520 and 3520-A contain, but it covers the same underlying account and the same activity. Inconsistencies between CRS data and voluntarily filed forms are visible to the IRS.

What the IRS receives

The IRS receives the CRS data and can match it against the Forms 3520 and 3520-A filed by the settlor. A trust that has not been disclosed on the Forms but appears in CRS data is a discrepancy the IRS can identify. A trust whose disclosed values on the Forms do not match the CRS account balances is a similar discrepancy. Neither situation ends well for the filer.

This is why voluntary compliance is not merely advisable. It is the only rational position once the trust account exists and CRS reporting is running. The IRS will have the account information. The only question is whether the settlor's voluntary filings are consistent with what the IRS has already received through automatic exchange.

Why this matters for compliance

CRS removes the practical ability to maintain an undisclosed offshore trust account. A settlor who believed that the Cook Islands' trust confidentiality provisions shielded their account information from the IRS is incorrect. Confidentiality under Cook Islands law means the trust terms are not publicly accessible. It does not mean the account is invisible to tax authorities entitled to the information under CRS. These are two entirely different regimes addressing two entirely different questions.

The practical implication is straightforward: file Forms 3520 and 3520-A every year, file FBAR and Form 8938 where applicable, and ensure the values reported are consistent with the trust accounts the IRS is receiving through CRS. A CPA with Cook Islands trust experience handles all of this as part of an integrated annual compliance package.

General information only. CRS reporting is an evolving area and the Cook Islands' specific implementation has been updated since initial adoption. Confirm current obligations with a CPA familiar with international tax reporting.

Speak to a specialistQuestions about tax obligations for your trust?A confidential call — we will connect you with a CPA with Cook Islands trust filing experience.Book a consultation Cook Islands Trust formation from $10,000, inclusive of first-year trustee costs.
Speak to a specialistQuestions about tax obligations for your trust?A confidential call — we will connect you with a CPA with Cook Islands trust filing experience.Book a consultation Cook Islands Trust formation from $10,000, inclusive of first-year trustee costs.
(Review & sourcing)
Written by
Connor Steens
BBus, business development
Reviewed by
John Evans
20+ years, offshore structuring
Last updated
3 August 2026
General information
Sourced from
IRS publications and practitioner guidance
Confirm current requirements with a qualified CPA
01IRS Form 3520 — annual return for transactions with foreign trusts.
02IRS Form 3520-A — annual information return for foreign trusts.
03FinCEN FBAR guidance — reporting of foreign bank and financial accounts.
04IRS FATCA guidance — Foreign Account Tax Compliance Act.

Yes. The Cook Islands joined the OECD Common Reporting Standard and financial institutions in the Cook Islands report account information to the FSC for automatic exchange with relevant foreign tax authorities.

Yes, through CRS automatic exchange. The IRS receives account balance and income information from Cook Islands financial institutions for US-resident account holders.

No. Confidentiality under Cook Islands law means the trust terms are not publicly accessible to third parties. CRS reporting to tax authorities entitled to the information is a separate regime that operates independently.

Account holder identity, tax identification number, country of residence, account number, year-end balance, and income credited during the year including interest, dividends, and gross proceeds.

The IRS can identify the discrepancy. Inconsistencies between voluntarily filed forms and CRS data received from the Cook Islands are exactly what the IRS's offshore compliance programs are designed to identify.

Different but parallel regimes. FATCA requires foreign financial institutions to report US account holders to the IRS directly. CRS is a multilateral framework where each country reports to its own authority for automatic exchange. Both cover Cook Islands trust accounts.

No. CRS reporting is what the financial institution does automatically. Forms 3520 and 3520-A are what you file voluntarily. Both obligations exist independently.

Consult a tax attorney with offshore voluntary disclosure experience before filing anything. The IRS has specific programs for correcting non-compliance, and the approach taken affects the penalties applied.

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