On 15 May 2021, Costa Rica has formally become an OECD Member, the 38th country to do so in the Organisation’s 60-year history.

Costa Rica’s accession, extending the OECD’s membership to 38 countries, will take effect after the country has taken the appropriate steps at the national level to accede to the OECD Convention, and deposited its instrument of accession with the French government, the depository of the Convention.  
As part of its accession process, Costa Rica successfully completed in-depth technical reviews by 22 OECD Committees and has carried out important reforms that have allowed the country to align its legislation, policies and practices to OECD standards in areas such as competition, statistics, anti-bribery, corporate governance of state-owned enterprises, financial markets, tax transparency and industrial chemicals management.
The OECD’s governing Council of member countries invited Costa Rica to open accession talks in April 2015. Costa Rica will become the Organisation’s fourth member country from the Latin America and Caribbean region, joining Mexico, Chile and Colombia.