InvoiceNow · Microsoft Dynamics 365 Business Central
InvoiceNow for Microsoft Dynamics 365 Business Central
Chang Ting is building SG InvoiceNow for Dynamics Business Central, an extension that connects your ERP to Singapore’s InvoiceNow e-invoicing network through an IMDA-accredited Access Point. It is designed to send and receive e-invoices from inside Business Central, and to prepare the invoice data GST-registered businesses will need to transmit to IRAS.
In development. SG InvoiceNow for Dynamics Business Central is being built. Chang Ting has applied to IMDA for accreditation, which has not yet been granted, and the features on this page are planned. Talk to us now to see the solution design, plan your readiness, or join our early testing.
- Stay in Business CentralE-invoices are planned to go out from the sales documents your team already posts, and supplier e-invoices to arrive for review in the same system.
- One trail for partners and IRASEach transmission is planned to be logged with its status and, for GST InvoiceNow, the IRAS acknowledgement.
- Plan by your GST InvoiceNow dateIRAS is phasing the requirement in from 2025 to April 2031. Knowing your date now leaves time to test.
See how it works
Read the video transcript
Run your finances on Microsoft Dynamics 365 Business Central? Here's how your invoices can join InvoiceNow.
Today, many invoices still leave as PDF attachments. Customers re-key them, mistakes slip in, and your team chases what arrived.
InvoiceNow is Singapore's nationwide e-invoicing network, built on Peppol. Businesses connect through IMDA-accredited Access Points, so invoices move between finance systems as data.
Chang Ting is building SG InvoiceNow for Dynamics Business Central. It works inside Business Central and is designed to turn posted invoices and credit notes into Singapore's e-invoice format, then pass them to an accredited Access Point.
Before sending, it checks the details the network needs, such as your customer's Peppol ID. Afterwards, it tracks each document's status and keeps an audit trail.
IRAS is phasing in GST InvoiceNow from 2025 to 2031. Preparing that invoice data is part of the extension's design.
It's in development. Request a demo to see the design and plan your InvoiceNow readiness with Chang Ting.
The video describes the intended design. The features shown are planned and not yet available. Chang Ting is not yet IMDA-accredited.
What is InvoiceNow?
Singapore's national e-invoicing network, in plain terms
InvoiceNow is the nationwide e-invoicing network run by IMDA. It is built on Peppol. Instead of emailing a PDF that someone has to re-key, your finance system sends a structured invoice that your customer’s system can read and process directly.
IRAS calls this the five-corner model: the usual four corners of a Peppol exchange, plus IRAS as the fifth.
A shared language for invoices
Peppol is an international set of document formats and exchange rules. Singapore uses its own profiles of it, including SG Peppol BIS Billing 3.0 and PINT-SG, so that an invoice created in one system can be read by another without re-typing.
Your gateway to the network
An Access Point is a service provider accredited by IMDA to connect business systems to InvoiceNow. Your system passes the invoice to your Access Point, which delivers it across the network to your buyer’s Access Point.
Your address on InvoiceNow
Once registered, your business gets a Peppol ID, usually 0195:SG followed by your UEN, and is listed in the SG Peppol Directory so trading partners can find you. The ID stays the same if you change solution provider.
Why this matters for Business Central users
A connected invoice process, and a GST obligation on its way
Business Central holds your customers, suppliers and posted invoices. To take part in InvoiceNow it also needs Singapore-specific invoice data, validation against the Singapore rules, and a connection to an IMDA-accredited Access Point. Without that, teams keep emailing PDFs, re-keying supplier invoices and chasing payment status by phone.
Two related, but different, obligations
InvoiceNow is about exchanging e-invoices with your customers and suppliers over the network.
GST InvoiceNow is IRAS’s requirement for GST-registered businesses to transmit invoice data to IRAS through the InvoiceNow network, using an InvoiceNow-Ready Solution. When an invoice travels over the network, IRAS receives a copy through the Access Point. Sales and purchases that do not travel over the network, for example sales to customers who are not registered, are sent as data extracted from your solution.
According to IRAS, the data covers standard-rated, zero-rated and exempt supplies, and standard-rated and zero-rated purchases on which input tax is claimed. Some businesses are excluded, such as certain overseas entities and businesses registered for GST only because of reverse charge. Check your own position with IRAS or your tax adviser.
When the GST InvoiceNow Requirement applies
| From | Who must transmit invoice data to IRAS through InvoiceNow |
|---|---|
| 1 Nov 2025 | Newly incorporated companies that apply to register for GST voluntarily |
| 1 Apr 2026 | All new voluntary GST registrants |
| 1 Apr 2028 | New compulsory GST registrants, and existing GST-registered businesses with annual supplies up to S$200,000 |
| 1 Apr 2029 | Existing GST-registered businesses with annual supplies up to S$1 million |
| 1 Apr 2030 | Existing GST-registered businesses with annual supplies up to S$4 million |
| 1 Apr 2031 | All remaining GST-registered businesses |
How SG InvoiceNow for Dynamics Business Central will work
Business Central, connected to InvoiceNow
The extension works inside Business Central. It does not replace your ERP or ask your team to learn a separate portal. It takes documents your team already posts, prepares them in the formats Singapore uses, and exchanges them with the network through an IMDA-accredited Access Point.
Who does what
| Part | Its role |
|---|---|
| Microsoft Dynamics 365 Business Central | Your system of record: customers, vendors, items, GST setup and the sales and purchase documents your team posts. |
| SG InvoiceNow for Dynamics Business Central | Adds InvoiceNow data such as Peppol IDs, converts documents to the Singapore formats, validates them, exchanges them with the Access Point, tracks status, and prepares and logs GST InvoiceNow data. Chang Ting develops, implements and supports it. |
| IMDA-accredited Access Point | Registers your business on the Singapore Peppol network, delivers documents to and from your trading partners' Access Points, and passes invoice data to IRAS. |
| IRAS | Receives invoice data for GST administration and returns an acknowledgement. |
Planned features
What the extension is being built to do
The features below are in development. They follow IMDA’s published requirements for InvoiceNow-Ready solutions and Chang Ting’s product design. Scope may change as development and testing progress.
Network registration and partner details
- Register your business on the InvoiceNow network through the Access Point, with your consent
- Store the Peppol IDs of your customers and suppliers on their Business Central records
- Look up whether a customer or supplier is on the network
- Detect, while invoicing, whether the recipient can receive an e-invoice
Sending invoices
- Send invoices and credit notes in SG Peppol BIS Billing 3.0 and PINT-SG from posted Business Central documents
- Fields needed for e-invoices to Singapore government agencies: business unit, attention to, vendor ID, email address, payment terms and invoice description
- Receive invoice responses from customers and show each invoice's status
- No manual step between Business Central and the Access Point
Receiving invoices
- Receive invoices and credit notes from the network into Business Central and display them for review
- Send invoice responses to your suppliers
- Check a supplier's GST registration number against IRAS's Check GST Register service
Orders
- Receive orders, order changes and order cancellations, and update the original order
- Send order responses
- Convert an incoming order into an invoice that keeps the order details
- Receive and view order balance documents, and prevent government invoice quantities from exceeding the latest balance
GST InvoiceNow
- Activate or deactivate GST InvoiceNow submission for each company
- Extract and package invoice data for IRAS, including sales and purchases that do not travel over the network
- Log each submission with its IRAS acknowledgement ID and status, kept for at least five years
- Reports to reconcile what was transmitted with your GST records
Control and administration
- Validation before sending, with specific messages that say what to fix
- Automatic retry, a monitoring page and notifications for failed transmissions
- An audit trail of InvoiceNow setup changes, with credentials kept in Business Central's isolated storage
- Role-based permissions and guided setup, including your GST InvoiceNow phase
Compatibility and prerequisites
What you need, and what we confirm with you
Business Central
Designed for Microsoft Dynamics 365 Business Central online (SaaS), version 28 or later.
Your data
A GST registration where relevant, your UEN, and customer, supplier and GST setup that is complete and accurate. We review your master data and any existing customisations or custom invoice layouts before configuration.
Access Point and licensing
The extension exchanges documents through an IMDA-accredited Access Point. The arrangement, the licence and the pricing are confirmed after a readiness assessment, because they depend on your document volumes and processes.
Current limitation: the extension is in development and is not yet available for production use. Availability dates will be published on this page.
Implementation approach
The same four steps we use for every Business Central project
We follow our standard Business Central delivery approach, adapted for InvoiceNow.
01
Discover
A readiness assessment: your GST InvoiceNow date, document types and volumes, trading partners already on the network, master data quality and existing customisations.
02
Design
Scope, Access Point arrangement, configuration plan, test plan and timeline, agreed with your finance team.
03
Deploy
Configuration and data preparation, testing with sample documents and trading partners, role-based training, and a supported go-live.
04
Grow
Ongoing support, updates as IMDA and IRAS requirements change, and help onboarding more customers and suppliers onto e-invoicing.
Support and resources
Help from sign-up to day-to-day use
Business enquiries and sign-up
For demonstrations, readiness assessments and sign-up questions, email connect@changting.com.sg or call +65 9387 0806 (Mon to Fri, 9:00am to 6:00pm SGT).
Technical support
For technical questions and support issues, email support@changting.com.sg. We respond to enquiries within three working days.
User guides and training
User guides in PDF and video format will be published on this page before release. Training will be offered as online sessions and on-site workshops, and the training schedule will be listed here.
FAQ
Questions finance and IT teams ask us
How do we get a Peppol ID?
Your business is registered on the InvoiceNow network through an IMDA-accredited Access Point, with your consent. The Peppol ID is usually 0195:SG followed by your UEN. The extension is planned to handle the registration request from Business Central, and we guide you through it during onboarding.
Will it work with our existing Business Central customisations?
The extension is being built with Business Central's standard extension model, so it adds to your system rather than changing Microsoft's code. Custom fields, invoice layouts and other extensions can still affect the data sent, so we review them in the readiness assessment.
Which documents will be covered?
Planned coverage includes invoices and credit notes in both directions, invoice responses, and incoming orders, order changes, order cancellations and order balances, with order responses sent back. GST InvoiceNow data for IRAS is also planned, including transactions that do not travel over the network.
If we send e-invoices over InvoiceNow, have we met the GST InvoiceNow Requirement?
Not automatically. Exchanging e-invoices with trading partners and transmitting invoice data to IRAS are related but separate. Under the GST InvoiceNow Requirement, invoice data must reach IRAS through an InvoiceNow-Ready Solution, including sales and purchases that are not exchanged over the network. The extension is planned to cover both.
When do we need to comply?
It depends on when you registered for GST and on your annual supplies. The phases run from 1 November 2025 to 1 April 2031, as shown in the table above. IRAS states that the legislation for the phases from 1 April 2028 will be enacted later, so check the IRAS website or your tax adviser for your position.
Is Chang Ting an IMDA-accredited InvoiceNow-Ready Solution Provider?
Not yet. Chang Ting has applied to IMDA for InvoiceNow-Ready Solution Provider (IRSP) accreditation for SG InvoiceNow for Dynamics Business Central. Until IMDA grants accreditation, we do not describe the extension as InvoiceNow-Ready. The IMDA website lists the providers it has accredited.
How long does implementation take?
It depends on your document volumes, number of companies, trading partners and customisations. We give you a timeline after the readiness assessment rather than a generic estimate.
What support is available after go-live?
Chang Ting provides ongoing support by email, updates as IMDA and IRAS requirements change, and training for new users. See Support and resources above for contact details.
Next step
Request a demo or discuss your InvoiceNow readiness
Tell us about your Business Central setup and your GST InvoiceNow timing. We will walk you through the planned solution, or review what your business needs to be ready.
Prefer email? Write to connect@changting.com.sg.
Sources for regulatory statements
- IRAS, e-Tax Guide: Adopting GST InvoiceNow Requirement for GST-registered Businesses (Second Edition, 9 March 2026)
- IRAS: GST InvoiceNow Requirement
- IMDA: Becoming an InvoiceNow-Ready Solution Provider
- IMDA: InvoiceNow FAQs and the SG Peppol Directory
Information on this page is general and is not tax or legal advice. InvoiceNow is a trademark of the Infocomm Media Development Authority (IMDA). Microsoft, Microsoft Dynamics 365 and Business Central are trademarks of the Microsoft group of companies. Chang Ting is not affiliated with, or endorsed by, IMDA or IRAS. Related reading: our Business Central solutions and what Business Central 28.4 changes for enterprises.