InvoiceNow is structured invoice exchange.
InvoiceNow is Singapore's nationwide e-invoicing framework, built on PEPPOL. Instead of sending a PDF and re-keying it into the accounting system, businesses exchange structured invoice data through the network. For GST workflows, that structured data becomes better evidence for coding, review, and F5 preparation.
- InvoiceNow is Singapore's PEPPOL-based e-invoicing framework.
- PEPPOL invoices are structured data, not PDF images.
- The accounting value is cleaner source evidence and less re-keying.
The GST timeline is phased.
IRAS describes a phased GST InvoiceNow requirement. Voluntary and newly incorporated voluntary-GST-registration phases started in 2025 and 2026. From 1 April 2028, compulsory registration and smaller existing GST-registered businesses enter the timeline, with larger existing GST-registered businesses progressively covered through 1 April 2031. Verify the current official timetable before acting on a date.
- 1 November 2025: companies registering voluntarily for GST within 6 months of incorporation.
- 1 April 2026: voluntary GST registration applicants regardless of incorporation date or business structure.
- 1 April 2028: compulsory GST registration applicants and existing GST-registered businesses with total annual supplies up to S$200,000.
- 1 April 2029: existing GST-registered businesses with total annual supplies up to S$1,000,000.
- 1 April 2030: existing GST-registered businesses with total annual supplies up to S$4,000,000.
- 1 April 2031: existing GST-registered businesses with total annual supplies above S$4,000,000.
What SMEs should prepare now.
The practical preparation is workflow readiness: clean customer and supplier records, GST tax-code discipline, source-document retention, exception review, and a clear Access Point decision. The accounting system should be ready to preserve the invoice payload and connect it to the journal and F5 review pack.
- Clean up customer and supplier master data.
- Review tax-code setup and GST coding responsibilities.
- Decide how PEPPOL source payloads will be retained.
- Plan who reviews exceptions before posting.
How Accountant Included fits.
Accountant Included is planned to use structured invoice data as evidence inside the accounting workflow. The agent can draft treatment from structured fields, attach the source payload, surface exceptions, and carry the trail into the F5 review pack. It does not claim to be a PEPPOL Access Point, and it does not transmit invoices or GST returns on a user's behalf.