What is InvoiceNow?
InvoiceNow is Singapore's nationwide e-invoicing network, built on the international Peppol standard, that lets businesses send and receive invoices as structured digital data — and, for GST-registered businesses, transmit that invoice data directly to IRAS. It was launched by the Infocomm Media Development Authority (IMDA) in 2019.
How InvoiceNow works
Instead of emailing a PDF, an InvoiceNow invoice travels as structured data between the sender's and recipient's systems through Peppol Access Points — IMDA-approved service providers that act as gateways into the Peppol network. Each business on the network is identified by its Peppol ID, which is tied to its UEN (Unique Entity Number), so receivers can look up senders directly in the public IMDA directory.
For GST-registered businesses adopting the GST InvoiceNow Requirement, a copy of the invoice data is also transmitted to IRAS automatically. That shifts GST reporting from a quarterly manual exercise into a real-time data feed.
The rollout timeline (GST InvoiceNow Requirement)
IRAS is phasing the requirement in over several years:
- 1 May 2025 — voluntary early adoption opens for any GST-registered business that wants to start transmitting invoice data ahead of the mandate (soft launch).
- 1 November 2025 — newly incorporated companies (incorporated within 6 months before their GST registration application) that voluntarily register for GST must adopt the requirement.
- 1 April 2026 — all new voluntary GST registrants must adopt, regardless of incorporation date or business structure.
- April 2028 → April 2031 — existing GST-registered businesses, phased in progressively by annual supply value, until the requirement covers every GST-registered business in Singapore.
To ease adoption, IRAS and IMDA offer transitional funding: up to S$1,000 for small and medium-sized enterprises (SMEs) and up to S$5,000 for larger businesses to offset onboarding costs. SMEs can also use the Productivity Solutions Grant (PSG) toward eligible InvoiceNow-ready software.
Timeline accurate as of May 2026 — confirm your business's exact date using IRAS's official guidance linked below. The April 2031 endpoint was formally announced at Committee of Supply 2026.
Example
A Singapore design studio that voluntarily registered for GST in June 2026 issues an invoice to a client. Because the studio is on the post-April-2026 voluntary-registrant rule, its InvoiceNow-ready software sends the invoice over the Peppol network to the client's Access Point — and a copy is transmitted to IRAS automatically. There's no separate PDF, and no manual re-entry of GST data at filing time.
Related terms
- Peppol / PINT-SG — Peppol is the international e-invoicing standard.
- GST InvoiceNow Requirement — The GST InvoiceNow Requirement is IRAS's mandate that GST-registered businesses transmit invoice data to IRAS via the InvoiceNow Peppol network.
- GST F5 — GST F5 is the quarterly GST return every GST-registered business in Singapore files with IRAS.
- Uen (coming soon)
Sources
Last reviewed 29 May 2026. Verify any thresholds or dates against the official source above before relying on them.