InvoiceNow Requirement: What GST Companies in Singapore Need to Know in 2025

As Singapore advances its digital transformation, the Inland Revenue Authority of Singapore (IRAS) is implementing the GST InvoiceNow Requirement, mandating GST-registered companies to transmit invoice data electronically via the InvoiceNow network. This initiative aims to streamline tax administration and enhance compliance.

InvoiceNow Requirements: What GST Companies in Singapore Need to Know in 2025

What Is InvoiceNow?

InvoiceNow is Singapore's nationwide e-invoicing network, based on the international Peppol standard. It enables businesses to send and receive invoices in a structured digital format directly between accounting systems, reducing manual processing and errors. Launched by IMDA (Infocomm Media Development Authority), InvoiceNow helps businesses automate invoice processing, reduce manual data entry, and lower the risk of invoice errors.

What Is the GST InvoiceNow Requirement?

To enhance GST compliance and streamline tax reporting, IRAS (Inland Revenue Authority of Singapore) is progressively implementing mandatory InvoiceNow requirements:

• From 1 May 2025: Soft launch—available to all GST-registered businesses and new applicants.

• From 1 November 2025: Mandatory for newly incorporated companies that voluntarily register for GST within six months.

• From 1 April 2026: Mandatory for all new voluntary GST registrants.

IRAS has signaled plans to extend this requirement to existing GST-registered businesses in the near future.

Why Should GST Companies Use InvoiceNow?

For GST companies in Singapore, InvoiceNow offers key advantages:

• ✅ Improved GST compliance with fewer invoice errors and real-time data transmission

• ✅ Faster payments due to quicker invoice delivery and processing

• ✅ Less paperwork, manual matching, and reduced admin workload

• ✅ Audit-ready digital records, helping with faster and more accurate IRAS audits

• ✅ Future integration with IRAS’ digital GST return submission processes

What GST-Registered Businesses Must Do

To comply with the GST InvoiceNow requirement, companies should:

1. Check their current accounting software for InvoiceNow readiness (e.g., Xero, QuickBooks). (View the list of InvoiceNow-Ready Solution Provider)

2. Register on the Peppol network via an IMDA-accredited Access Point Provider.

3. Enable invoice submission to IRAS via their software.

4. Train staff and update internal workflows to use InvoiceNow as the default invoicing method.

5. Inform customers and suppliers to ensure smooth transaction exchanges.

   
   

Need Help Getting Started with InvoiceNow?

If you’re unsure how to implement InvoiceNow, especially if you’re using Xero or planning to switch, we can help.

At Account-Ink, we support GST companies in the InvoiceNow requirements:

✅ Setting up Xero and integrating InvoiceNow features

✅ Registering for the Peppol network through IMDA-accredited Access Point Providers

✅ Training your finance team to use InvoiceNow efficiently

✅ Ensuring end-to-end compliance with IRAS’ GST invoicing requirements

✅ Optimizing your digital workflow for automated invoicing, GST reporting, and audit readiness

Conclusion

The InvoiceNow requirement for GST companies marks a major step in Singapore’s move toward smarter, faster, and more transparent business practices. Don’t wait for the mandate—get ahead by implementing an InvoiceNow-ready solution like Xero, and stay compliant with IRAS while enjoying all the operational benefits of digital invoicing.

Ready to go digital with InvoiceNow and Xero?

Let’s make compliance easy. Contact us today to get started with a free consultation.