Singapore businesses are entering a new phase of digital tax compliance. The GST InvoiceNow requirement , introduced by the Inland Revenue Authority of Singapore (IRAS), will soon require GST-registered companies to submit invoice data directly through the InvoiceNow network.  While the implementation begins progressively from April 2028 to April 2031 , SMEs should start preparing early to avoid disruption and ensure smooth GST compliance.  In this article, we break down what