Starting November 2025, Singapore will begin enforcing mandatory e-invoicing requirements for newly GST-registered businesses, as part of the phased rollout of the InvoiceNow network. 

The requirements are gradually expanding to include all new voluntary GST registrants.

This summary provides a clear breakdown of:

  • Who is affected;
  • E-invoicing deadlines;
  • Technical and compliance requirements.

Use this short guide to ensure your business is fully prepared for Singapore’s e-invoicing mandates and stays compliant with IRAS regulations.