The Brunei dollar replaced the Malaya and British Borneo dollar in 1967 after the formation of Malaysia and the independence of Singapore. Until 23 June 1973, the Malaysian ringgit was exchangeable at par with the Singapore dollar and Brunei dollar. The Monetary Authority of Singapore and the Brunei Currency and Monetary Board (now the Authoriti Monetari Brunei Darussalam (Monetary Authority of Brunei Darussalam) still maintain the exchangeability of their two currencies. The dollar is accepted as "customary tender" in Singapore according to the Currency Interchangeability Agreement, although it is not legal tender there.