Singapore’s GST InvoiceNow requirement is reshaping how GST-registered businesses issue and report invoices. Instead of simply sending a document to your trading partner, you now need to make sure the same data reaches the Inland Revenue Authority of Singapore (IRAS) in the right format and through the right channel.

With Global E-invoicing Compliance, we are building support for Singapore so you can prepare for the upcoming phases of the mandate without adding extra portals, manual steps, or custom integrations.

Why Singapore is different

Singapore is building on an established Peppol network and turning it into a five-corner model.

That means:

• You still exchange invoices with buyers and suppliers via Peppol InvoiceNow

• At the same time, GST-relevant invoice data must be submitted directly to IRAS via API

• Only IMDA-accredited Access Points are allowed to handle this IRAS submission

On top of that, all GST-relevant invoices, including Peppol, non-Peppol, and aggregated POS data, must be transformed into PINT SG (UBL 2.1) with a Standard Business Document Header before they can be sent to IRAS.

Getting this right consistently is hard to manage in-house, especially once you factor in multiple document types, UUID requirements, and error handling.

What we are building for you

With Global E-invoicing Compliance, we are designing Singapore support to handle both commercial invoice delivery and IRAS submission through a single, coordinated flow.

This includes:

• Dual delivery in one flow

  Route invoices to your trading partners via Peppol and submit a compliant copy to IRAS via API, so your team does not need to maintain separate processes

• Built-in PINT SG transformation and validation

  Transform invoices, credit notes, debit notes and aggregated POS summaries into PINT SG and validate against IRAS Schematron rules, so issues are caught before they become rejected submissions

• End-to-end visibility

  Track IRAS acknowledgement IDs, submission status and error codes in one place, so finance and tax teams can resolve issues quickly and stay audit ready

What to do next

If Singapore is on your roadmap, now is the time to plan. Early adopters will be better placed once IRAS extends the requirement to all GST-registered businesses.

For a detailed breakdown of Singapore’s GST InvoiceNow requirement including mandate timelines, technical specifics, and how invoice data must be exchanged with IRAS, visit our e-invoicing in Singapore page. If you are ready to explore how we can help you, contact our sales team today!