Singapore InvoiceNow (Peppol) Connector

Key Features

InvoiceNow / Peppol SG transmission of structured e-invoices to the national network via your nominated Access Point

IMDA-compliant Peppol BIS Billing 3.0 document generation with all required header and party fields

GST tax mapping from Shopify tax lines to Peppol tax categories, rates, and summary totals

Supports both B2G (government supplier) and B2B delivery with correct UEN / Peppol participant identifiers

Configurable invoice numbering series with gap-free sequencing and document archiving

Delivery confirmation and transmission-status tracking written back to each Shopify order

Triggered by Shopify orders/paid and orders/fulfilled webhooks via the Admin GraphQL API

Invoice identity, source order link, and status persisted as Shopify metafields for a clean audit trail

Handles refunds and credit notes as corresponding Peppol credit-note documents

Retry and error queue for failed transmissions, with admin-visible failure reasons

Multi-currency and SGD handling consistent with your GST reporting

Installed as a custom (unlisted) OAuth app scoped to only the permissions it needs

Built to order, done for you

No DIY setup — a working app, built, installed and supported by ECOSIRE.

You order

Start with a one-time build price. We scope it with you at kickoff.

We build & install

ECOSIRE builds, configures and installs it on your Shopify.

Go live + support

You go live in about 2–4 weeks, with a post-launch support window.

About this Product

The Singapore InvoiceNow (Peppol) Connector is a build-to-order Shopify app that lets GST-registered Singapore merchants and government suppliers issue and transmit Peppol-based InvoiceNow e-invoices straight from their store — no manual re-keying into a separate portal.

This is not an instant App Store download. ECOSIRE builds the connector against your store, installs it as a custom (unlisted) Shopify app, configures it to your GST setup and Peppol Access Point, and supports it after go-live. You get software that fits your tax codes, numbering rules, and recipient list rather than a generic template.

How it works. The app subscribes to Shopify orders/paid and orders/fulfilled webhooks and reads order, customer, and line-item data through the Admin GraphQL API. Each order is mapped into a structured Peppol BIS Billing 3.0 / InvoiceNow document — GST line and summary tax mapping, supplier and buyer UEN/identifiers, currency, and IMDA-required fields. The document is handed to your nominated Peppol Access Point for transmission across the InvoiceNow network to B2G (government) and B2B recipients. Invoice identity, source order, and transmission status are stored on the order via Shopify metafields so your team has a clear audit trail inside Admin.

What it does not do. It does not invent a tax engine or replace your accounting system, and it does not file GST returns for you. It produces compliant structured invoices and moves them onto the Peppol network reliably.

Because every store's catalog, GST treatment, and recipient mix differ, we scope your exact requirements first, then build. Honest lead times, real support, and code you own.

What you get

A custom Shopify app installed on your store via OAuth, scoped to the minimum required access

Order-to-Peppol mapping configured to your GST codes, UEN, and InvoiceNow profile

Integration with your nominated Peppol Access Point for live B2G and B2B transmission

Invoice numbering, archiving, and metafield audit-trail configuration

A staging/test run validating sample invoices against IMDA / Peppol BIS Billing 3.0 before go-live

Handover documentation plus an agreed post-launch support and update window

Who this is for

GST-Registered Shopify Merchant

A Singapore retailer or wholesaler already charging GST in Shopify who needs to issue InvoiceNow e-invoices without copying orders into a separate e-invoicing portal.

Government Supplier (B2G)

A business that sells to Singapore government agencies and must deliver structured Peppol invoices over InvoiceNow to get paid, with reliable delivery confirmation.

Finance / Operations Lead

The person responsible for GST accuracy, gap-free invoice numbering, and audit readiness who wants every Shopify order traceable to its transmitted e-invoice.

How Singapore InvoiceNow (Peppol) Connector Compares

Criterion	ECOSIRE	Custom Build	Competitor
Peppol InvoiceNow transmission from Shopify orders	Included	Partial support	Partial support
IMDA-compliant Peppol BIS Billing 3.0 structured invoices	Included	Partial support	Partial support
Built and configured to your exact GST codes and numbering	Included	Included	Not included
Available as an instant self-serve App Store install	Not included	Not included	Included
B2G plus B2B delivery with correct UEN / participant IDs	Included	Partial support	Partial support
Status and audit trail written back to Shopify metafields	Included	Partial support	Not included
You own the code and the integration	Included	Included	Not included
Ongoing compliance updates as specs change	Included	Partial support	Partial support

Frequently Asked Questions about Singapore InvoiceNow (Peppol) Connector

Is this an instant App Store download?

No. This is a build-to-order connector. ECOSIRE scopes your GST setup, catalog, and recipient mix, then builds, installs, and configures the app as a custom (unlisted) Shopify app for your store. You are buying a built-and-installed solution, not a self-serve template.

How long does delivery take after I purchase?

After purchase we begin with a short scoping call to confirm your UEN, GST codes, Peppol Access Point, and numbering rules. A typical build, staging test, and go-live runs about 2 to 4 weeks depending on catalog complexity and how quickly Access Point details and sample recipients are available. We confirm a firm timeline in writing once scope is agreed.

What about ongoing support and updates?

Every build includes an agreed post-launch support window for bug fixes and configuration help. As Shopify APIs and IMDA / Peppol BIS specifications evolve, we offer ongoing maintenance so your transmissions stay compliant. Support and update terms are stated up front before work begins — no surprises.

Do I need my own Peppol Access Point?

Yes. InvoiceNow transmission goes through an accredited Peppol Access Point. The connector integrates with the Access Point you nominate. If you do not have one yet, we can advise on selecting one as part of scoping, but the Access Point service itself is contracted separately by you.

Does this file my GST returns or replace my accounting system?

No. The connector generates compliant structured InvoiceNow e-invoices from your Shopify orders and transmits them over Peppol. It does not file GST F5 returns and does not replace your accounting or ERP system. It can sit alongside them and feed clean invoice data into your existing process.