After Brunei Darussalam has gained its independence on 1st January 1984, the former "Pejabat Treasury" was renamed as Finance Department / Treasury Department.
Treasury Department adheres to the regulation referred to as "The 1983 Financial Regulation". Subsequent Official Circulars issued by The Prime Minister's Office and The Ministry of Finance and Economy are also referred to as part of the regulation.
From 2004 onwards, Financial Year was changed from 1st January until 31st December to 1st April until 31st March the following year. Closing of the Accounting Year are done at the end of the Financial Year where every Ministries and Departments submit all payment vouchers for the year to Treasury Department before mid March of that year.