Register for Singapore InvoiceNow (Peppol) e-invoicing

Verified steps

1. Select an IMDA-accredited InvoiceNow access point provider from the list published on the IMDA website; from 1 April 2026 all new voluntary GST registrants must use InvoiceNow to transmit invoice data to IRAS — confirm whether your GST registration triggers mandatory participation.
2. Register your business with the chosen access point provider; provide your UEN (Unique Entity Number) and GST registration number — the provider will register your Peppol ID using the SG:UEN scheme in the SG Peppol SMP.
3. Ensure your accounting or ERP system generates invoices conforming to the PINT-SG specification (the Singapore CIUS of Peppol BIS Billing 3.0, adopted from 2025); validate against the PINT-SG Schematron rules before any live submission.
4. Integrate your system with the access point's outbound API using the credentials provisioned during onboarding; test the end-to-end flow using the access point's sandbox environment before enabling production.
5. For GST InvoiceNow-registered businesses, invoice data is forwarded by the access point to IRAS automatically upon successful delivery — no separate IRAS submission step is required.
6. Maintain a list of your buyers' Peppol IDs to enable direct Peppol delivery; for buyers not on Peppol, your access point may offer fallback delivery channels such as email or a PDF portal.