The Singapore dollar or dollar (Malay: Ringgit Singapura, sign: $; code: SGD) is the official currency of Singapore. It is normally abbreviated with the dollar sign $, or alternatively S$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.
The Monetary Authority of Singapore and the Monetary Authorty of Brunei Darussalam (Autoriti Monetari Brunei Darussalam) still maintain the historic exchangeability of their two currencies, the Singaporean dollar and the Brunei dollar, respectively. The Singapore dollar is accepted as "customary tender" in Brunei according to the Currency Interchangeability Agreement. Likewise, the Brunei dollar is customarily accepted in Singapore.
Between 1845 and 1939, Singapore used the Straits dollar.
This was replaced by the Malayan dollar, and, from 1953, the Malaya and British Borneo dollar, which were issued by the Board of Commissioners of Currency, Malaya and British Borneo.
Singapore continued to use the common currency upon joining Malaysia in 1963, but only two years after Singapore's expulsion and independence from Malaysia in 1965, the monetary union between Malaysia, Singapore and Brunei broke down.
Singapore established the Board of Commissioners of Currency, Singapore, on 7 April 1967 and issued its first coins and notes. Nevertheless, the Singapore dollar was exchangeable at par with the Malaysian ringgit until 1973, and interchangeability with the Brunei dollar is still maintained.