Singapore Statutory Mandate

Singapore IRAS & IMDA InvoiceNow Statutory Mandate Roadmap

The Inland Revenue Authority of Singapore (IRAS) and Infocomm Media Development Authority (IMDA) are rolling out phased mandatory e-invoicing for GST-registered businesses. Here is what your enterprise needs to comply using TallyPrime.

Official IRAS Phased Implementation Timeline

Phase 1: 1 May 2025 (Voluntary Early Adoption)

GST-registered businesses can voluntarily transmit electronic invoices directly to IRAS via InvoiceNow for early compliance benefits and streamlined tax filing.

Phase 2: 1 November 2025 (Newly Registered GST Entities)

Mandatory for all newly registered GST businesses to adopt InvoiceNow for issuance of all B2B sales invoices.

Phase 3: 1 April 2026 (New Voluntary GST Registrants)

All new voluntary GST registrants from 1 April 2026. Remaining GST-registered businesses are phased in from 1 April 2028 to 2031.

PINT-SG Technical Standard Compliance

Singapore has transitioned from standard Peppol BIS 3.0 to the Peppol International (PINT-SG) specification. Techneek InvoiceNow natively enforces every PINT-SG rule:

  • SG GST Classification: Strict enforcement of Singapore tax category codes (SR for standard 9%, ZR for zero-rate, NG for non-GST).
  • PayNow Integration: Automated injection of Singapore PayNow payment identifiers (Z02) and recipient UEN.
  • Standard Business Document (SBDH): Envelope validation with iso6523-actorid-upis addressing scheme.
  • Proof of Delivery: the bridge records the AS4 delivery receipt returned by the receiving Access Point against your transaction.

Government Grant Support (PSG / CTC)

Eligible Singapore SMEs adopting InvoiceNow can apply for the Productivity Solutions Grant (PSG) to subsidize up to 50% of the software and integration costs.

Inquire About PSG Grant Eligibility →