GST InvoiceNow Implementation Date Calculator
Every GST-registered business in Singapore has to send invoice data to IRAS through InvoiceNow, phased in by size and finishing April 2031. IRAS publishes this as a spreadsheet that takes 15–20 minutes and needs Excel. Three questions here and you will know your implementation date, your grant, and how long you have.
Where your business sits in the phased schedule.
This is a guide, not tax advice, and it is not affiliated with IRAS or IMDA. It applies the published phase table to the figures you entered. Rules and dates change — verify with IRAS or your tax agent before making decisions. Free-of-charge InvoiceNow solution packages are listed by IRAS and are available up to 31 March 2031.
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Usually that means you are working out the answer for more than one entity, or the date came sooner than you expected and you are deciding what to do about it.
