Singapore InvoiceNow (Peppol) E-Invoicing for WooCommerce

Key Features

Generates Peppol BIS Billing 3.0 UBL XML from each WooCommerce order, mapped to IMDA InvoiceNow requirements

IRAS 5-corner GST transmission model: invoice flows C1→C2→C3→C4 plus the GST data relay to IRAS

Routes every document through your chosen IMDA-accredited Access Point / IRSP (C2→C3 sending)

SGD totals, tax-inclusive/exclusive handling, and GST tax mapping (Standard-Rated, Zero-Rated, Exempt) with rounding control

Peppol Participant lookup and SMP validation before sending, so invoices aren't dispatched to unreachable recipients

Sender identity configuration: UEN, Peppol Participant ID (0195 scheme), and GST registration number

Hooks into the WooCommerce order lifecycle (order-status and payment-complete actions) to trigger generation automatically

Full HPOS / custom-order-table support alongside legacy post-meta orders

WP-Cron retry and status-polling worker for resilient delivery and MLR/acknowledgement handling

Dedicated wp-admin settings screen with credentials, defaults, transmission log, and per-order resend

Per-order transmission status, Peppol document reference, and error reason stored and surfaced in the order screen

WPML and WooCommerce multisite-aware configuration for multi-store or multilingual setups

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 WooCommerce.

Go live + support

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

About this Product

Singapore InvoiceNow (Peppol) E-Invoicing for WooCommerce is a build-to-order plugin that ECOSIRE designs, builds, installs, and supports directly on your WordPress/WooCommerce site. It is not an instant WordPress.org or WooCommerce.com download — you buy the build, and our engineers deploy and configure it for your specific store, GST registration, and chosen IMDA-accredited Access Point.

Once live, the plugin hooks into the WooCommerce order lifecycle (via actions like woocommerce_order_status_completed and woocommerce_payment_complete) to generate a compliant Peppol BIS Billing 3.0 UBL XML document for each qualifying order. It maps your SGD line items, GST tax codes (Standard-Rated, Zero-Rated, Exempt), shipping, and rounding into the correct UBL fields, then transmits the invoice through your IMDA Access Point (C2→C3) so it reaches your customer's Access Point under the 4-corner Peppol model — extended to the IRAS 5-corner model, where the required GST data is also relayed to IRAS for InvoiceNow GST reporting.

Built for HPOS / custom order tables as well as legacy post-based orders, it stores transmission status, Peppol Participant IDs, and document references against each order. A WP-Cron worker handles retries and status polling so a transient Access Point outage never silently drops an invoice. Admins manage everything from a dedicated wp-admin settings screen: endpoint credentials, sender UEN/Peppol ID, participant lookup and validation (SMP), GST treatment defaults, and per-order resend.

Because it is build-to-order, we tailor field mappings, number formats, and tax logic to how your store actually sells — multi-rate carts, deposits, B2B vs B2C, WPML or multisite setups included. Every engagement ships with installation, a walkthrough, and a defined support window.

What you get

Custom-built plugin packaged for your site, configured for your GST registration, UEN, and Peppol sender ID

Installation and activation on your WordPress/WooCommerce environment (staging first, then production)

Integration and credential setup with your chosen IMDA-accredited Access Point / IRSP

Field-mapping configuration tuned to your products, tax rates, and SGD/GST treatment

Sandbox/test transmission validation against the Peppol network before go-live

Admin walkthrough plus a written runbook covering settings, resend, and the transmission log

Defined post-launch support window with bug fixes and WooCommerce/WordPress compatibility updates

Who this is for

Singapore GST-registered WooCommerce seller

A GST-registered SG merchant adopting IMDA InvoiceNow who needs every WooCommerce order issued as a compliant Peppol e-invoice without retyping into a separate portal.

B2B / wholesale store on WooCommerce

A business-to-business seller whose customers demand Peppol-deliverable invoices to their own Access Points, and who needs participant lookup and reliable C2→C3 routing.

Finance / accounts lead at an SME

The person responsible for GST reporting who wants invoice data flowing to IRAS via the 5-corner model with an auditable per-order transmission log, not manual reconciliation.

How Singapore InvoiceNow (Peppol) E-Invoicing for WooCommerce Compares

Criterion	ECOSIRE	Custom Build	Competitor
Native IMDA InvoiceNow / Peppol BIS UBL generation from WooCommerce orders	Included	Partial support	Partial support
IRAS 5-corner GST transmission model support	Included	Partial support	Not included
Routing through your IMDA-accredited Access Point / IRSP	Included	Partial support	Partial support
Built, installed, and configured on your site for you	Included	Included	Not included
HPOS / custom-order-table compatibility out of the box	Included	Partial support	Partial support
Tailored GST tax mapping, rounding, and field logic for your store	Included	Included	Not included
Defined support window with Peppol/IMDA spec-change maintenance	Included	Partial support	Partial support
Instant self-service download from a public marketplace	Not included	Not included	Included

Frequently Asked Questions about Singapore InvoiceNow (Peppol) E-Invoicing for WooCommerce

Is this an instant download I can install myself?

No. This is a build-to-order plugin. ECOSIRE builds it for your specific store, GST registration, and chosen IMDA Access Point, then installs and configures it on your WordPress/WooCommerce site. There is no public WordPress.org or WooCommerce.com download — the value is in the tailored build, deployment, and validation.

How long until it's live on my store? (delivery lead time)

A standard build is typically delivered within about 2 to 3 weeks from when we have your requirements and Access Point credentials. We build on staging first, run test transmissions against the Peppol network, then cut over to production. Complex tax logic, multisite, or WPML setups can extend the timeline, and we confirm exact dates during scoping.

What ongoing support and updates do I get?

Every build includes a defined post-launch support window covering bug fixes and compatibility updates for new WooCommerce and WordPress releases. We also maintain the plugin against Peppol BIS and IMDA InvoiceNow specification changes. Extended or ongoing maintenance can be arranged so your e-invoicing keeps working as the network and your store evolve.

Do I still need an IMDA-accredited Access Point?

Yes. The plugin generates and submits compliant invoices, but actual transmission onto the Peppol network goes through an IMDA-accredited Access Point (IRSP) that you hold an account with. We integrate the plugin with your Access Point's API and credentials. If you don't have one yet, we can guide you on selecting one as part of the engagement.

Does it work with HPOS and my existing tax and multilingual setup?

Yes. It is built for WooCommerce High-Performance Order Storage (custom order tables) as well as legacy post-based orders, and we map your existing SGD pricing, GST tax classes, and rounding during the build. WPML and multisite configurations are supported and configured to match how your store is structured.