The International Monetary Fund (IMF) supplements national sovereign reserves through the creation of Special Drawing Rights (SDRs)—an international reserve asset designed to support global liquidity.

The SDR value is calculated mathematically using a weighted basket of five dominant global currencies, evaluated and updated by the IMF every five years to reflect shifts in international trade and finance:

SDR Structural Value = Function(US Dollar, Euro, Chinese Renminbi, Japanese Yen, British Pound Sterling)

SDRs are allocated to IMF member states in proportion to their quota shares. During balance of payments crises, countries can exchange their SDR allocations for freely convertible currencies with other member states, providing an essential financial safety net for emerging economies.