David Adeang, Minister of Finance of Nauru, signed the Articles of Agreement of the IMF at a ceremony held at the State Department in Washington, IMF officials witnessed the signing ceremony.
Nauru applied for membership in the Washington-based IMF and World Bank in April 2014, after joining the United Nations in 1996 as the world's smallest independent republic.
The World Bank, which helps developing countries to spur growth and fight poverty, welcomed Nauru as its smallest member by land mass, at 21 square kilometers (eight square miles).