E-invoicing in Asia

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Executive summary

Asia’s e-invoicing landscape is built around the Peppol network, the same international standard used across Europe and Oceania. Singapore led the way by becoming the first Peppol Authority outside Europe in 2018. This gives businesses in the region built-in cross-border interoperability with all other Peppol-connected jurisdictions worldwide. Malaysia also has a Peppol Authority (MDEC), but its mandate runs on MyInvois, a clearance platform of the tax authority. The region’s approach differs from the Americas’ clearance model. Rather than requiring government pre-approval for every invoice, Asian countries are adopting reporting models where structured invoice data flows to the tax authority in near real time alongside the buyer. Singapore’s five-corner model is the defining architecture: the supplier and buyer exchange invoices through their respective Peppol Access Points, while the tax authority (IRAS) receives a copy of every transaction as the “fifth corner.” Mandates are rolling out in phases through 2025 and 2026, starting with voluntary GST registrants and progressively extending to all registered businesses.

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Common standards and formats

Peppol is the shared standard across Asia, providing a unified network for invoice exchange and cross-border interoperability. Singapore uses the PINT-SG format, a Singapore-specific adaptation of OASIS UBL 2.1 XML that includes local requirements such as GST registration numbers, PayNow/GIRO payment methods, and IRAS validation rules. This format is progressively replacing the earlier Singapore BIS Billing 3.0 specification.

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Compliance model

The region uses a five-corner Peppol model for e-invoicing and e-reporting. In this model:

1. The supplier sends an invoice through their Peppol Access Point.
2. The Access Point routes the invoice to the buyer’s Access Point using the Peppol network.
3. The tax authority (such as IRAS in Singapore) receives a copy of the transaction as the fifth corner.

This approach combines e-invoicing and e-reporting into a single flow. However, unlike the Americas’ clearance model, invoices do not require government pre-approval to be legally valid. The tax authority receives data for monitoring and compliance purposes without acting as a gatekeeper. Malaysia uses a different model. The supplier submits every e-invoice to MyInvois, the platform of the tax authority (LHDN), for real-time validation. Then the supplier shares the validated e-invoice with the buyer, by any channel, including Peppol. Singapore also maintains a separate GST F5 quarterly return requirement. Both the real-time Peppol reporting and the periodic aggregate return coexist — filing GST F5 remains mandatory even for businesses transmitting invoices via InvoiceNow.

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Invopop countries in this region