The confirmation follows the publication of the OECD Global Forum's Enhanced Monitoring Report in June 2026, which reviewed a number of jurisdictions as part of the ongoing monitoring process for the implementation of international tax transparency standards. The report confirmed that both Monaco and Mauritius continue to meet the requirements associated with the OECD's highest rating category.
For international investors, family offices, financial institutions and multinational businesses, the outcome provides further evidence of the commitment of both jurisdictions to maintaining internationally recognised standards of transparency and cooperation.
Understanding the OECD Assessment
The OECD Global Forum on Transparency and Exchange of Information for Tax Purposes is the leading international body responsible for assessing compliance with global tax transparency standards.The Exchange of Information on Request (EOIR) standard evaluates whether tax authorities can obtain and exchange relevant information effectively with foreign counterparts when requested. Assessments cover areas including legal ownership information, accounting records, access to information by competent authorities and the effectiveness of international cooperation mechanisms.
A rating of "Compliant" represents the highest level of recognition available under the OECD framework.
Monaco: Continuing a Strong Track Record
Monaco originally achieved its "Compliant" rating in 2018. The OECD's June 2026 monitoring exercise confirmed that the Principality continues to satisfy the standards associated with that rating and remains within the highest category of the OECD assessment framework.The result reflects Monaco's continued investment in regulatory frameworks, international cooperation and transparency measures. It also complements the broader reforms implemented by the Principality in recent years to strengthen its financial crime prevention and regulatory systems.
The Monaco Government welcomed the OECD's findings, highlighting the result as recognition of the sustained efforts undertaken by public authorities and private sector stakeholders to maintain robust international standards.
Mauritius: Reinforcing Its International Financial Centre Credentials
Mauritius also continues to hold a "Compliant" rating under the OECD's EOIR framework, confirming its adherence to international standards on tax transparency and information exchange.The result is particularly significant given Mauritius' role as a major international financial centre and investment gateway for Africa, Asia and the Middle East. As global expectations regarding transparency, beneficial ownership information and international cooperation continue to evolve, maintaining the highest OECD rating provides important reassurance to investors, financial institutions and multinational groups operating through Mauritius.
The OECD's findings reinforce Mauritius' long-standing commitment to regulatory credibility and alignment with international best practices.
Why These Results Matter
International financial centres are increasingly assessed not only on their tax frameworks but also on the effectiveness of their transparency regimes, regulatory supervision and ability to cooperate with foreign authorities.The continued recognition of both Monaco and Mauritius by the OECD demonstrates that each jurisdiction remains committed to meeting international expectations while providing stable and sophisticated environments for international business, investment holding structures, family offices and wealth planning activities.
For clients operating internationally, such assessments provide an important indicator of a jurisdiction's reputation, regulatory maturity and commitment to global standards.
How Rosemont Can Help
With offices and operations across multiple international financial centres, including Monaco and Mauritius, Rosemont assists private clients, family offices, entrepreneurs and international businesses with corporate structuring, fiduciary and family office solutions, governance, regulatory compliance and cross-border wealth planning. Our teams help clients navigate evolving international transparency and reporting requirements while developing robust structures that support long-term commercial and family objectives.For further information, please contact: office@rosemont-mc.com.
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