The ISO 4217 code for Special Drawing Rights is XDR.
Special Drawing Rights are international reserve assets created and maintained by the International Monetary Fund. They are not a conventional currency issued by a country. Instead, an SDR represents a potential claim on the freely usable currencies of IMF member countries, helping supplement official reserves.
The designation XDR follows ISO 4217’s convention of using “X” codes for supranational or non-national monetary units. The code’s numeric ISO identifier is 960. SDRs are allocated to IMF members, which can exchange them for currencies when needed, while the IMF uses the unit extensively in its accounting and lending operations.
The most frequent mistake is answering SDR because that is the familiar abbreviation of “Special Drawing Rights.” SDR is the name abbreviation and is also used as the unit’s symbol in many contexts; XDR is the formal three-letter ISO 4217 currency code. The value of an SDR is based on a basket of major currencies, currently including the US dollar, euro, Chinese renminbi, Japanese yen and pound sterling.