Cook Islands TIEAs and What Foreign Owners Must Know

TIEAs and the Cook Islands: What Foreign Owners Need to KnowCopy link to section

Tax information exchange agreements in the Cook Islands are bilateral treaties that let a partner country's tax authority request specific tax information from Cook Islands authorities. The jurisdiction has signed a documented set of these agreements with countries including Australia, New Zealand, Ireland, the Netherlands, and the Nordic bloc, and it sits inside the wider transparency framework run by the OECD Global Forum. These arrangements matter to any foreign owner holding a Cook Islands company or trust whose home country is a treaty partner.

This article explains what a TIEA does, who the Cook Islands has signed with, how a request is handled, the confidentiality limits that apply, and what all of it means for compliance. It is written for non-resident investors, business owners, and their advisers weighing a Cook Islands structure or already maintaining one.

What a Tax Information Exchange Agreement Actually Is (and Is Not)Copy link to section

A TIEA is a bilateral treaty between two countries that sets up a formal channel for sharing information on civil and criminal tax matters. It operates on request: a partner country's competent authority asks for specific information, and the other side provides it. Nothing flows automatically.

The model originates with the OECD, which released its Model Agreement in April 2002 through the Global Forum Working Group on Effective Exchange of Information. That model is not binding, but a large number of bilateral agreements have been drafted from it. Each TIEA implements the Exchange of Information on Request (EOIR) standard, covering both criminal and civil tax cases.

It helps to be clear about what a TIEA is not.

A TIEA does not relieve double taxation, and it is not the same as the Common Reporting Standard. Confusing the request-based TIEA system with automatic CRS exchange is a frequent error among owners trying to assess their exposure.

Company Incorporation in Cook Islands

Set up your company in Cook Islands with Expanship handling registration end to end.

Learn more

Why the Cook Islands Signed TIEAs: From Offshore Centre to OECD CooperationCopy link to section

Self-governing since 1965, the Cook Islands built its offshore finance centre in the early 1980s, anchored by trust and company legislation. The International Trusts Act dates to 1984 and has been amended several times to keep pace with international rules.

Pressure to sign TIEAs came from the OECD's work against harmful tax practices, where a lack of effective information exchange was treated as a defining marker. Signing these agreements typically forces a jurisdiction to soften secrecy laws, which is how transparency became the prevailing global standard.

The territory now positions itself as cooperating on anti-money laundering, counter-terrorist financing, and tax transparency, working with both FATF and the OECD. The practical result is a balancing act: gradual transparency commitments alongside an effort to keep the features that draw foreign investors to its trust regime.

How Many TIEAs the Cook Islands Has and With Which PartnersCopy link to section

The documented treaty network is the clearest way to judge your own exposure. As of around 2010, the Cook Islands had concluded TIEAs with New Zealand, Australia, the Netherlands, Ireland, and the Nordic Council, the latter covering Iceland, Denmark, Norway, Sweden, Finland, Greenland, and the Faroe Islands. Additional agreements with Mexico, Greece, Italy, and Korea were intended at that time, though no verified public record confirms whether those were ultimately signed and ratified.

Several partners confirm their agreements independently. The Czech Republic lists the Cook Islands among jurisdictions with an effective bilateral TIEA. Iceland counts a Cook Islands TIEA within its programme of 44 such agreements, and the Australian Treasury publishes the Australia–Cook Islands agreement.

One absence is worth flagging for many readers: the Cook Islands does not appear on the US Treasury list of TIEA partners, and no US–Cook Islands agreement has been found. A precise, official up-to-date total is not published in a single government source; the confirmed partners span roughly 12 to 14 individual jurisdictions, and the exact current figure should be treated as pending official confirmation.

Ongoing Compliance in Cook Islands

Keep your Cook Islands entity compliant with filings, returns, and statutory obligations.

Learn more

The Scope of Information Covered Under a Cook Islands TIEACopy link to section

Cook Islands TIEAs reach both criminal and civil tax matters. The governing EOIR standard allows a partner to request information that is "foreseeably relevant" to administering or enforcing its own tax laws, which can bear directly on income tax assessment and collection.

Under the OECD model that shapes these agreements, the information categories generally include bank account details, beneficial ownership of companies and trusts, accounting records, and other material relevant to a tax investigation. The exact statutory schedule of categories applied locally is not published in a form retrievable here, so treat the precise list as indicative rather than definitive.

The 2015 OECD Phase 2 review found that the Cook Islands had adequate laws requiring authorities to make tax information available, along with working systems to monitor and enforce its exchange obligations. Separately, under CRS, local financial institutions must identify reportable accounts and transmit data annually to the tax authority, a duty that falls mainly on bank accounts and investment vehicles and may exclude certain trust structures depending on classification.

The Request Process: How an Exchange Is Triggered and HandledCopy link to section

1. A competent authority in a partner country submits a formal written request, typically using an agreed template that sets out the required content.
2. The request must concern information foreseeably relevant to the requesting country's tax administration or enforcement; fishing expeditions are not permitted.
3. On the Cook Islands side, the Revenue Management Division, part of the Ministry of Finance and Economic Management, receives and actions the request.
4. The authority gathers the requested information and responds to the partner's competent authority.

The 2015 Phase 2 review reported that the Cook Islands had answered all partner requests fully and on time, with treaty peers expressing strong satisfaction. No specific statutory response deadline is published in official sources, so timing should be understood as governed by the "full and timely" expectation rather than a fixed number of days.

Cook Islands Incorporation Pricing

See transparent pricing to incorporate and maintain a company in Cook Islands.

View pricing

Confidentiality, Safeguards and Limits on Information SharingCopy link to section

Confidentiality remains a structural feature of the Cook Islands regime, and it sits alongside the exchange obligations rather than being erased by them. Under the International Trusts Act, divulging trust information is a criminal offence unless an exception applies, such as a court authorisation, and civil proceedings concerning an international trust are heard privately.

There is no publicly accessible register of trusts or the parties connected to them. The territory responds to requests tied to criminal investigations and defined tax matters while holding firm confidentiality for other purposes, which is why owners often describe its approach as selective rather than open.

Information exchanged under the OECD model carries a use-limitation rule: a receiving country may use the material only for the tax purposes named in the request and must keep it confidential. The 2022 Global Forum Phase 1 review judged the legal and regulatory framework generally in place for availability, access, and exchange, while noting that improvements were still needed in several areas.

How TIEAs Fit the OECD Transparency and Exchange StandardsCopy link to section

The Cook Islands belongs to the Global Forum on Transparency and Exchange of Information for Tax Purposes, and its TIEAs are one component of a broader standards regime. In the 2015 Phase 2 review, which assessed implementation in practice, the jurisdiction was rated "largely compliant." Reviewers recommended clearer legislation on the maintenance of underlying accounting records and continued monitoring of new record-keeping duties.

The picture has since been reassessed and pushed further. The 2022 Second Round Phase 1 review found the framework generally in place but needing improvement in several areas, and in October 2024 the Global Forum Secretariat and the Asian Development Bank ran a mock on-site visit in Avarua to help prepare for the upcoming in-practice review.

Automatic exchange now runs in parallel with the request-based system.

• The Cook Islands has signed the OECD CRS Multilateral Competent Authority Agreement and made its first CRS exchange in 2018.
• It has adopted the CRS "wider approach," requiring reporting institutions to apply broader due diligence.
• It appears on the UK HMRC CRS list of reportable jurisdictions for the 2025 reporting year, covering 2024 accounts.
• It has no FATCA Intergovernmental Agreement with the United States, though it has enacted FATCA-compatible measures to facilitate exchange with the US.

What TIEAs Mean in Practice for a Non-Resident Owner or AdviserCopy link to section

Your exposure depends almost entirely on where you are tax resident. If your home country holds a TIEA with the Cook Islands, such as Australia, New Zealand, Ireland, the Netherlands, Iceland, or another Nordic state, your home tax authority can file a formal request, and the Cook Islands is obligated to respond fully and promptly. That is a real and practical channel, not a theoretical one.

Owners from countries without a Cook Islands TIEA, the United States being the prominent example, have no request channel of that kind. CRS automatic reporting may still reach a home jurisdiction that participates in the MCAA framework, so the absence of a bilateral TIEA does not equate to invisibility.

CRS applies mainly to bank accounts and investment vehicles, and certain trust structures may fall outside its scope depending on classification, while Cook Islands law continues to restrict identification of trust owners and disclosure of trust values. Because the local tax system is limited, the territory gains little direct benefit from these reciprocal arrangements but still supplies information where the rules require it. Compliance for a Cook Islands structure therefore spans tax obligations, settlor identification duties, and FATF anti-money-laundering standards together.

The Outlook: Where Information Exchange in the Cook Islands Is HeadingCopy link to section

The next milestone is the Second Round Phase 2 peer review, which tests compliance with the EOIR standard in practice rather than only on paper. The October 2024 mock visit in Avarua engaged both government and the private sector precisely to prepare for that assessment, and the 2022 Phase 1 review made clear that work remained before a clean result could be expected.

Scrutiny is tightening on practical performance, particularly the availability of beneficial ownership information and the maintenance of accounting records. No verified announcement of new bilateral TIEA partners beyond the documented set has surfaced; the growth in exchange coverage now comes through CRS and the MCAA rather than fresh bilateral agreements.

ConclusionCopy link to section

For a foreign owner, the practical question is not how many TIEAs the Cook Islands has signed but whether your own country is one of the partners, because that determines whether a formal information request can reach your structure. CRS automatic reporting adds a second, separate channel that can apply even where no TIEA exists. Confidentiality protections around trusts remain meaningful but are bounded by genuine tax and criminal exchange obligations. Treat both the request-based and automatic systems as part of your compliance planning, and document your structure on the assumption that information may be shared lawfully.

How Expanship Can Help Your Business in the Cook IslandsCopy link to section

Expanship supports foreign owners in understanding how Cook Islands TIEAs and CRS obligations apply to their company or trust, and in keeping the structure compliant with both. The same team handles the wider needs of a foreign-owned entity, from formation through ongoing administration.

• Company and trust incorporation in the Cook Islands
• Registered agent and registered office services
• Tax registration and annual filing
• Ongoing compliance and obligation management
• Accounting and bookkeeping support
• Introductions to banking partners

To discuss your structure and its exchange-of-information obligations, contact Expanship Cook Islands.

Frequently Asked QuestionsCopy link to section