Singapore (Peppol): Overview

Mandate

On April 15, 2024, the Inland Revenue Authority of Singapore (IRAS) announced that it will make e-invoicing mandatory for GST-registered businesses, who will be required to transmit invoice data to IRAS using InvoiceNow solutions via the InvoiceNow network.

This requirement was implemented progressively:

• From November 1, 2025, for newly incorporated companies that register for GST voluntarily
• From April 1, 2026, for all new voluntary GST-registrants

Singapore's InvoiceNow system enhances the traditional four-corner e-delivery model by adding IRAS as a fifth corner. This setup allows for both the transmission of invoices in real time through InvoiceNow (utilizing Peppol) and the submission of extracted invoice data from business systems to IRAS using an API.

Starting May 1, 2025, IRAS began a voluntary early adoption phase where existing GST-registered businesses could start using InvoiceNow solutions to transmit invoice data through the InvoiceNow network.

Description

Singapore follows the rules of Peppol BIS Billing SG, based on the principles of the Peppol International Invoicing Model (PINT).

The PINT model was developed on the basis of the European core invoice (EN-16931) and Peppol BIS Billing 3.0, extended to cover international tax regulations. The current version is PINT SG Billing v1.4.

Details