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InvoiceNow Requirements in Singapore: Key Updates and Effective Dates

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InvoiceNow Requirements in Singapore: Key Updates and Effective Dates

Singapore is progressing steadily toward nationwide e-invoicing adoption through InvoiceNow, built on the Peppol network. As implementation milestones take effect, businesses—especially new GST registrants—must prepare for both e-invoicing and GST compliance requirements.

Who Must Comply and When? (GST-Related InvoiceNow Requirements)

IRAS has outlined when voluntary GST registrants must adopt InvoiceNow for issuing and receiving e-invoices. Key compliance dates include:

1. Companies that register for GST voluntarily within 6 months of being incorporated

Compliance Date: From 1 November 2025

Newly incorporated companies that voluntarily register for GST within their first six months must begin issuing and receiving e-invoices through InvoiceNow starting this date.

2. All new voluntary GST registrants (regardless of incorporation date)

Compliance Date: From 1 April 2026

Any business voluntarily registering for GST on or after this date must comply with InvoiceNow requirements, even if incorporated years earlier.

This early adoption framework ensures consistency among new GST registrants and supports IRAS’s shift toward digital invoicing.

Mandatory InvoiceNow Requirement – Effective 1 November 2025

From 1 November 2025, all new vendors onboarding with Singapore Government agencies must submit e-invoices via InvoiceNow.

This means:

  • New suppliers must be InvoiceNow-ready before contracting with government agencies.

  • PDF or paper invoices will not be accepted for new vendor billings.

  • Unprepared vendors risk payment delays or inability to invoice government customers.

Private-sector adoption is also increasing, with many large organisations requiring or encouraging suppliers to adopt InvoiceNow to streamline AP and procurement processes.

Preparing Early for InvoiceNow

With multiple compliance dates approaching, businesses should ensure:

  • Their accounting software is InvoiceNow-ready

  • Tax invoice formats comply with IRAS requirements

  • GST codes and fields are correctly integrated into e-invoices

  • Internal billing workflows align with digital invoicing processes

Early preparation helps reduce errors, speed up payment cycles, and support financial compliance.

How We Can Support Your Business

1. Outsourced Accounting Services

We provide comprehensive accounting support, including:

  • Implementation and activation of InvoiceNow-compatible systems

  • Monthly bookkeeping integrated with e-invoice workflows

  • AP/AR tracking, reconciliation, and management reporting

  • Troubleshooting e-invoicing and system integration issues

This ensures that your finance operations remain accurate, efficient, and compliant.

2. GST Review and Compliance Services

Our GST services help ensure accuracy within your e-invoicing processes:

  • Review of GST codes and classifications in e-invoices

  • Quarterly or annual GST health checks

  • Advisory on IRAS invoicing and documentation guidelines

  • Support during GST audits or IRAS queries

Correct GST treatment remains essential even with digital invoicing.

If you need help with InvoiceNow implementation, outsourced accounting, or GST review services, feel free to contact us. We are ready to support your digitalisation and compliance journey.

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