Since its launch in 2019 by the Infocomm Media Development Authority (IMDA), InvoiceNow has become a cornerstone of Singapore’s national digitalisation journey. Built on the international Peppol standard, InvoiceNow allows businesses to send and receive e-invoices directly between finance systems, ensuring security, accuracy, and speed in invoice processing.

Whether you’re a small enterprise or a large organisation, InvoiceNow is designed to help you reduce manual processing, improve cashflow visibility and foster better relationships with customers and suppliers. It’s more than just an invoicing tool — it’s part of Singapore’s broader push toward smart nation goals.

Esker’s commitment to supporting digital transformation in Singapore

At Esker, we’re proud to be an IMDA-accredited solution and access point provider — a recognition that affirms our commitment to delivering trusted and compliant e-invoicing solutions to Singapore-based businesses.

We’re also excited to share that Esker is now officially certified under IMDA’s C5 framework, which is essential for transmitting e-invoices to the Inland Revenue Authority of Singapore (IRAS). Additionally, Esker’s solutions support the new Peppol PINT (Peppol International) format — two critical milestones that reinforce Esker’s leadership in e-invoicing enablement.

What does this mean for your business?

Certified on C5 (IRAS) by IMDA

On 15 April 2024, the Inland Revenue Authority of Singapore (IRAS) announced a phased implementation of InvoiceNow for GST-registered businesses, beginning in November 2025.

This initiative expands the traditional four-corner e-delivery model to include a fifth corner (C5), enabling the submission of invoice data to IRAS. The overall system design involves transmitting live invoice copies through InvoiceNow, as well as invoice data extracted from invoicing systems, to IRAS.

How invoice data is transmitted to IRAS (C5) via InvoiceNow

Corner 1 and Corner 4 represent the Invoice Systems.
Peppol Service Provider in this context is an Access Point accredited by IMDA

The C5 certification (IRAS) ensures that Esker’s e-invoicing solution meets five essential criteria for compliance and usability in Singapore. These include:

Secure access point capabilities for sending/receiving Peppol invoices
A user-friendly invoicing interface
Integration with accounting and ERP systems
Secure invoice archiving
Robust support services for onboarding and troubleshooting

With Esker’s C5 certification (IRAS), businesses can be assured that they are using a complete, secure and IMDA-approved solution that simplifies compliance and supports long-term scalability.

Ready for Peppol PINT

As Peppol evolves to accommodate global interoperability, the adoption of the Peppol PINT format represents the next phase of cross-border e-invoicing. Esker is already fully compliant with PINT, which means:

Businesses can send invoices not just within Singapore, but across borders in the updated global Peppol format
Future-proofing your invoicing process against international regulatory requirements
Seamless compatibility with government and multinational systems adopting PINT

By being PINT-ready, Esker ensures your organisation stays ahead of the curve.

Seamless integration with InvoiceNow

Esker’s cloud-based e-invoicing solution is fully integrated with Singapore’s InvoiceNow network, making it easier than ever for companies to digitise their invoicing workflows. Key benefits include:

Faster payment cycles through direct, system-to-system invoice exchange
Improved accuracy and compliance with reduced manual entry and fewer errors
Enhanced cashflow management with better tracking and real-time visibility
Scalability and integration with your existing finance systems (SAP, Oracle, etc.)

Whether you’re just starting to explore e-invoicing or looking to enhance your current processes, Esker offers a solution tailored for your digital finance strategy.

Roadmap for the GST InvoiceNow requirement

All GST-registered businesses will soon be required to transmit invoice data to IRAS using InvoiceNow-Ready Solutions via the InvoiceNow network.

1 May 2025: All GST-registered businesses who want a head start can begin to submit invoice data to IRAS using InvoiceNow-Read Solutions.
1 November 2025: Newly incorporated companies from 1 May 2025 that apply for voluntary GST registration are required to start submitting invoice data to IRAS using InvoiceNow-Ready Solutions.
1 April 2026: All new voluntary GST registrants are required to start submitting invoice data to IRAS using InvoiceNow-Ready Solutions.

Why choose Esker?

Esker goes beyond basic compliance — we provide a holistic source-to-pay and order-to-cash automation platform that enables:

End-to-end process visibility
AI-driven invoice matching and approval workflows
Collaboration tools for Finance teams and suppliers
Powerful analytics for better financial decision-making

With Esker, you don’t just comply — you optimise, scale and future-proof your business.

Ready to go digital?

Join the growing number of businesses transforming their invoicing processes with InvoiceNow and Esker. By meeting the latest IRAS and IMDA requirements, we’re here to support your move to a smarter, faster, and more reliable e-invoicing experience.

Learn more or request a consultation, reach out to our team at invoicenow@esker.com or visit our Singapore e-invoicing page.

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Empowering E-Invoicing in Singapore: Esker now C5 Accredited & Fully Supports Peppol PINT