Written by Sumit Yadav
Effective November 1, 2025, the mandate applies to newly incorporated companies that voluntarily register for GST within six months of incorporation. From April 1, 2026, it will expand to all new voluntary GST registrants, regardless of incorporation date.
Singapore's Peppol-based model introduces a 5th corner — the Inland Revenue Authority of Singapore (IRAS). Under this model, e-invoices flow from the supplier to the buyer through accredited Access Points, with a copy transmitted directly to IRAS for real-time GST data validation.
Businesses must adopt an InvoiceNow-ready accounting or ERP solution integrated with an IMDA-accredited Access Point. All invoices must be issued in the PINT SG XML format and linked to the company's Peppol ID associated with its Unique Entity Number (UEN).
The Singapore government is offering grants like the Productivity Solutions Grant (PSG) and Start Digital Pack to aid system adoption. Non-compliance may result in revocation or denial of GST registration by IRAS.
The mandate enhances efficiency, reduces manual reporting errors, accelerates payment cycles, and simplifies GST return filing. Businesses benefit from faster reconciliation, improved data accuracy, and reduced audit risks.
