International Tax Co-operation (Economic Substance) Act (2026 Revision)

Summary

This is the consolidated 2026 Revision of the Cayman Islands' International Tax Co-operation (Economic Substance) Act, which sets out the core economic substance (ES) regime originally enacted in 2018 and since amended. It applies to all Cayman Islands entities (companies, LLCs, LLPs, partnerships and exempted limited partnerships) and requires those classified as 'relevant entities' carrying on a 'relevant activity' to demonstrate adequate substance in the Islands, including core income-generating activities, direction and management, adequate expenditure, and physical presence and staffing.

Authority's Role and Special Rules

The Act empowers the Tax Information Authority (the Authority) to administer the regime, issue guidance, determine whether entities meet the economic substance test, and share information with other authorities including the Cayman Islands Monetary Authority and foreign tax authorities.

• Pure equity holding companies: Subject to a reduced economic substance test.
• High-risk intellectual property businesses: Subject to a rebuttable presumption of non-compliance.

Notification, Reporting and Enforcement

• Annual notification: All entities, not just relevant entities, must annually notify the Authority of their relevant-activity and tax-residence status.
• ES report: Relevant entities carrying on a relevant activity must additionally prepare and submit a detailed ES report to the Authority and retain supporting records for six years.
• Penalties for late reporting: Failure to submit the report on time triggers automatic financial penalties.
• Other provisions: The Act also covers appeals, confidentiality, immunity for the Authority, offences for providing misleading information, and offences by officers of a body corporate.

This 2026 Revision consolidates the original 2018 Law with subsequent amendment regulations up to 2024 and reflects the law as in force at 31 December 2025; it does not itself introduce new substantive obligations beyond the existing regime.

Key obligations

• Every entity must annually notify the Authority whether it is carrying on a relevant activity and, if so, whether it is a relevant entity, in the form, manner and at the time specified by the Authority.
• Entities tax resident outside the Islands that carry on a relevant activity must include in their notification details of immediate parent, ultimate parent, ultimate beneficial owner, financial year end, and jurisdiction of tax residence with supporting evidence.
• A relevant entity carrying on a relevant activity must satisfy the economic substance test in relation to that activity (core income-generating activities, direction and management in the Islands, and adequate expenditure, physical presence and personnel).
• A relevant entity required to satisfy the economic substance test must prepare and submit to the Authority an ES report no later than twelve months after the last day of its financial year.
• A relevant entity carrying on a high-risk intellectual property business must provide additional detailed information (business plans, employee information, evidence of decision-making in the Islands) to rebut the presumption of non-compliance.
• Relevant entities must retain books, documents, records and electronically stored information relevant to their ES filings for six years after the end of the relevant financial year.
• Relevant entities and other persons must provide additional information or make records available for inspection when reasonably required by the Authority, within the time or at the time it specifies.
• A relevant entity that fails to submit its ES report on time is liable to an automatic penalty of $5,000 plus $500 for each day the failure continues, payable within 30 days of notice.
• A pure equity holding company relying on the reduced economic substance test must confirm compliance with all applicable Companies Act filing requirements and that it has adequate human resources and premises in the Islands.

Applies to

relevant entities, companies incorporated under the Companies Act, limited liability companies, limited liability partnerships, partnerships, exempted limited partnerships, foreign limited partnerships, entities carrying on a relevant activity (including pure equity holding companies and high-risk intellectual property businesses)

Deadlines

• annually, at the time specified by the Authority: Every entity must notify the Authority of its relevant activity/tax residence status.
• no later than twelve months after the last day of the end of each financial year: A relevant entity must prepare and submit its economic substance report to the Authority.
• within thirty days after the day information is provided: A person conducting core income generating activities on behalf of a relevant entity may verify information submitted under section 7(4).
• within a reasonable time specified by the Authority: Provision of additional information or records requested by the Authority under sections 7(5)-(7).
• six years after the end of a financial year: Retention period for books, documents and records relating to ES information.
• within thirty days commencing with the specified date: Payment deadline for a penalty imposed for late submission of the ES report.
• 20th June, 2021: Commencement date from which certain partnerships (under the Partnership Act, Exempted Limited Partnership Act) became 'entities' for the purposes of sections 7 and 10 of the Act.