PINT SG is the Peppol invoice for Singapore's InvoiceNow network: a specialisation of the Peppol International Invoice in UBL 2.1, with GST categories and rules, identified as urn:peppol:pint:billing-1@sg-1. Under the GST InvoiceNow Requirement, GST-registered businesses submit invoice data to IRAS through InvoiceNow, in phases from 1 November 2025 to 1 April 2031. Klarbon support is planned, not available yet.
What is in a PINT SG invoice?
| Property | Value |
|---|---|
| Based on | Peppol International Invoice (PINT) |
| Syntax | UBL 2.1, Invoice and CreditNote |
| Specification identifier | urn:peppol:pint:billing-1@sg-1 |
| Tax | Goods and Services Tax, with Singapore GST category codes |
| Profile identifier | urn:peppol:bis:billing |
| Release | PINT SG Billing 1.4.1, 25 May 2026 |
OpenPeppol publishes PINT SG as the Singapore billing specification under the PINT method (OpenPeppol, Singapore, PINT SG BIS).
When does the GST InvoiceNow Requirement apply?
| From | Who |
|---|---|
| 1 November 2025 | companies that register for GST voluntarily within six months of incorporation |
| 1 April 2026 | businesses that apply for voluntary GST registration, whatever their incorporation date or structure |
| 1 April 2028 | new compulsory GST registrants, and existing GST-registered businesses with annual supplies up to 200,000 dollars |
| 1 April 2029 | existing GST-registered businesses up to 1 million dollars |
| 1 April 2030 | existing GST-registered businesses up to 4 million dollars |
| 1 April 2031 | existing GST-registered businesses above 4 million dollars |
IRAS sets the phases and has notified businesses registered before 2026 of their date (IRAS, IRAS, Committee of Supply 2026). The requirement is about transmitting data through InvoiceNow, not only about the shape of the XML.
What does Klarbon do with PINT SG?
Klarbon does not support PINT SG today; opening and checking it is planned, not available yet. Klarbon opens UBL invoices and opens and checks the European Peppol BIS Billing 3.0, with checking in beta; see the invoice viewer. Klarbon does not connect to InvoiceNow or submit data to IRAS.
Related
Frequently asked questions
What is InvoiceNow?
Singapore's nationwide e-invoicing network based on Peppol, introduced by the Infocomm Media Development Authority (IMDA) in 2019. Invoices on it follow PINT SG, the Singapore specialisation of the Peppol International Invoice.
What is the GST InvoiceNow Requirement?
A rule that GST-registered businesses submit invoice data to the Inland Revenue Authority of Singapore (IRAS) through InvoiceNow-Ready Solutions. It is rolled out in phases from 1 November 2025 to 1 April 2031.
Which identifier does a PINT SG invoice carry?
The specification identifier urn:peppol:pint:billing-1@sg-1 in cbc:CustomizationID, with the profile identifier urn:peppol:bis:billing.
Who must comply first?
Since 1 November 2025, companies that register for GST voluntarily within six months of incorporation. Since 1 April 2026, every new voluntary GST registrant. Existing businesses follow from 1 April 2028 to 1 April 2031 by size.