®Singapore InvoiceNow GST e-invoicing integration
Singapore's InvoiceNow is a Peppol-based network, and GST InvoiceNow reporting is now phasing in: new voluntary GST registrants already transmit invoice data to IRAS, and all GST-registered businesses follow through 2028 to 2031. We connect your software to InvoiceNow so you send, receive, and report on time.
Prefer to write? Email sales@nowgray.com with the software you run today and your timeline.
GST InvoiceNow reporting began with newly incorporated companies that register for GST voluntarily (from 1 November 2025) and all new voluntary registrants (from 1 April 2026). Existing GST-registered businesses are scheduled to phase in from 2028 to 2031.
- InvoiceNow (Peppol) connection
- GST data reporting to IRAS
- Peppol BIS format
- Send and receive invoices
What is InvoiceNow (Peppol) GST reporting in Singapore?
InvoiceNow is Singapore's nationwide e-invoicing network, built on Peppol and overseen by IMDA. On top of invoice exchange, IRAS has introduced GST InvoiceNow reporting, where GST-registered businesses transmit invoice data to IRAS through the network as part of their GST compliance.
The rollout is staged. Voluntary adoption opened in 2025. Newly incorporated companies that register for GST voluntarily have had to transmit data through InvoiceNow since 1 November 2025, and all new voluntary registrants from 1 April 2026. IRAS has said all GST-registered businesses will eventually be required to use InvoiceNow, with existing registrants phased in from 2028 to 2031 and individual implementation dates notified from mid-2026.
Because it is Peppol-based, the same connection lets you send and receive structured invoices with partners across the Peppol network, not just report to IRAS.
A complete Singapore integration.
Whether you run an off-the-shelf ERP, a cloud accounting app, or a POS you built in-house, we make it comply with InvoiceNow (Peppol) GST reporting, end to end.
InvoiceNow Access Point
We connect your software to an InvoiceNow (Peppol) Access Point for sending, receiving, and reporting.
GST data reporting
We set up the transmission of invoice data to IRAS as GST InvoiceNow reporting requires.
Peppol BIS mapping
We map your invoice data to the Peppol BIS format so documents validate.
Send and receive
You can issue and accept structured invoices with partners across the Peppol network.
Implementation-date readiness
We prepare existing registrants ahead of their notified implementation date so the switch is calm.
ERP / billing integration
All of this runs inside your existing ERP or billing software.
The Singapore compliance timeline.
Starting before enforcement means a calm cutover. Waiting means doing it under pressure.
New voluntary (newly incorporated)
Newly incorporated companies registering for GST voluntarily began transmitting through InvoiceNow.
All new voluntary registrants
All new voluntary GST registrants came into scope.
Existing registrants
Existing GST-registered businesses phase in, with dates notified from mid-2026. Confirm with IRAS.
Who the InvoiceNow (Peppol) GST reporting rules affect.
New voluntary GST registrants
Newly incorporated companies registering for GST voluntarily, and then all new voluntary registrants, already transmit data through InvoiceNow.
Existing GST-registered businesses
Scheduled to phase in from 2028 to 2031, with individual implementation dates notified from mid-2026.
Businesses on Peppol
Any business that wants to send and receive structured invoices with Singapore and regional partners on the Peppol network.
Dates and thresholds change, and scope depends on your exact situation. Treat this page as a starting point, confirm the detail with the Inland Revenue Authority of Singapore (IRAS), and tell us what you run today, we will tell you plainly what an integration would involve.
Built into the software you already run.
We connect your ERP or billing software to the InvoiceNow (Peppol) network and set up GST InvoiceNow reporting to IRAS. Because it is Peppol-based, the same connection supports structured invoicing with your regional partners.
If you are an existing GST-registered business, we get you ready ahead of your notified implementation date rather than at the last minute.
Singapore e-invoicing questions.
Is InvoiceNow mandatory in Singapore?
GST InvoiceNow reporting is phasing in. It began with newly incorporated companies registering for GST voluntarily (from 1 November 2025) and all new voluntary registrants (from 1 April 2026). Existing registrants are scheduled from 2028 to 2031. Confirm with IRAS.
What is the difference between InvoiceNow and GST InvoiceNow reporting?
InvoiceNow is the Peppol-based network for exchanging e-invoices. GST InvoiceNow reporting is the IRAS requirement to transmit invoice data to the tax authority through that network. We set up both.
Does InvoiceNow use Peppol?
Yes. InvoiceNow is built on Peppol, so the same connection lets you send and receive structured invoices with partners across the Peppol network, not just report to IRAS.
Can you integrate InvoiceNow with my software?
Yes. We connect your existing ERP or billing software to an InvoiceNow Access Point and set up GST reporting, and we also build compliant systems.
How do I get started?
Email sales@nowgray.com with your software and GST registration status. We will scope the InvoiceNow connection and reporting.
Start your Singapore e-invoicing integration.
Tell us what software you run and your timeline. We will scope the integration and get you compliant with InvoiceNow (Peppol) GST reporting well before enforcement reaches you.
Enquiries: sales@nowgray.com · Source of truth: Inland Revenue Authority of Singapore (IRAS)