Singapore’s InvoiceNow platform, powered by the global Peppol network and overseen by the Infocomm Media Development Authority (IMDA), streamlines electronic invoicing across the country. Since early adoption phases, businesses – especially government suppliers – have increasingly used structured Peppol BIS Billing 3.0 (Singapore profile) invoices for seamless integration.
InvoiceNow enables instant, validated invoice exchange between accounting systems through accredited access points. This approach cuts out manual entry, automates GST compliance, unlocks options like dynamic discounting and supply chain finance, and delivers full traceability via Peppol’s four-corner model.
As of 2026, IRAS has rolled out phased mandatory requirements for new voluntary GST registrants to submit invoice data via InvoiceNow (starting November 2025 for recently incorporated firms, and fully from April 2026). With plans to expand further, companies in or trading with Singapore should prioritize Peppol-compatible ERP or invoicing tools for smooth compliance and efficiency gains.
New Stuff: –Unit Master Configuration for E-Invoicing in Singapore Localization Suite
In this blog series, we explore the practical, hands-on implementation of Singapore’s Peppol-based e-invoicing using Sage Intacct and the InvoiceNow network.
A vital early step for reliable InvoiceNow transmission is aligning Sage Intacct’s Term Codes master with the standardized codes required by the Singapore Peppol BIS Billing 3.0 profile. To make this essential mapping easier and prevent manual mistakes that could trigger validation errors at the Access Point, we’ve added a user-friendly Term Codes Mapping interface directly in Sage Intacct’s Singapore Localization suite module.
Please refer below screenshot of the “Term Code Master Interface”.
As shown in the interface, start by selecting the Transaction Type – either Sales or Purchase. Next, choose the relevant term code from Sage Intacct’s Term Codes master (such as a Purchase Term Code).
Then, select the matching InvoiceNow Term Code from the compliant picklist, which follows Peppol BIS Billing standards tailored to Singapore’s requirements. Upon saving, the Entity ID will auto-populate.
Proper term code mapping in Sage Intacct guarantees full compliance with the Peppol BIS Billing 3.0 (SG profile), helping avoid common Access Point validation issues. This setup positions your business well for the ongoing phased rollout of InvoiceNow requirements – including mandatory invoice data submission to IRAS starting November 2025 for certain new voluntary GST registrants and expanding from April 2026 – while enabling quicker payments and automated workflows.
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