Inland Revenue Authority of Singapore (IRAS) Post author By CL Post date 14 May, 2020 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z The Inland Revenue Authority of Singapore is a statutory board of the Singapore Government under the Ministry of Finance of the Singapore government in charge of tax collection. ← Invert Level (IL) → Jurong Town Corporation (JTC)