Send & receive invoices
Exchange customer and supplier invoices through the InvoiceNow network.
CoreMatter InvoiceNow IntegrationCoreMatter integrates
CoreMatter integrates
with InvoiceNow.
Send and receive business documents, submit invoice data to IRAS and track the results within CoreMatter.
Accreditation in progress
Integration features
What the integration includes
The CoreMatter InvoiceNow integration covers the following functions.
Credit notes
Send and receive credit notes as part of your electronic document workflow.
Orders & responses
Exchange orders and responses alongside your invoicing activity.
GST submission to IRAS
Submit invoice data to IRAS through GST InvoiceNow from CoreMatter.
Document status tracking
Follow your documents and identify submissions that need attention.
IRAS acknowledgements
Review acknowledgements and distinguish IRAS outcomes from document-delivery statuses.
Your existing CoreMatter systemInvoiceNow alongside your
InvoiceNow alongside your
accounting and billing
CoreMatter combines legal practice management, accounting and billing. Its InvoiceNow integration connects that system to electronic document exchange and GST invoice-data submission.
Discuss how your firm’s current billing and purchase processes fit the InvoiceNow setup.
Explore the CoreMatter platform ↗CoreMatter’s homepage reports adoption by more than 600 legal firms in 11 countries. This refers to the CoreMatter platform; InvoiceNow accreditation is in progress.
Legal practice management
CoreMatter’s existing matter, activity and disbursement tools provide the context for your firm’s work.
Accounting & billing
Manage your firm’s financial work in CoreMatter’s integrated accounting and billing system.
InvoiceNow workspace
Exchange supported documents and review GST submissions, delivery statuses and acknowledgements.
Benefits for your firm
Why use InvoiceNow through CoreMatter?
Work with invoice exchange and submission information in the same product your firm uses for accounting and billing.
Document exchange within CoreMatter
Exchange structured invoices and credit notes through InvoiceNow, reducing the need to handle documents across separate channels.
IRAS submission and acknowledgements
Submit invoice data to IRAS and follow acknowledgements within CoreMatter.
Delivery and submission status
See document statuses, recent submissions and items needing attention in your InvoiceNow workspace.
Less re-keying
Structured invoice data gives receiving systems information they can process, instead of relying only on a PDF.
A shared network
InvoiceNow connects participating businesses using different compatible finance systems.
Less paper handling
Digital document exchange reduces reliance on printing and moving paper invoices.
How it works
How CoreMatter connects to InvoiceNow
CoreMatter supports document exchange with trading partners and a separate invoice-data submission route to IRAS.
01
Exchange your documents
Send and receive invoices, credit notes, orders and responses through InvoiceNow.
02
Submit GST invoice data
Use CoreMatter’s GST InvoiceNow functionality to submit invoice data to IRAS.
03
Follow the outcome
Review document statuses and IRAS acknowledgements in your workspace.
DOCUMENT EXCHANGE · SEND & RECEIVE
Your firmCoreMatter
↔
InvoiceNow / PeppolThrough participating access points
↔
Your trading partnerCompatible finance system
GST INVOICE DATA · SEPARATE REPORTING ROUTE
CoreMatterInvoice data for submission
→
Access pointTransmits invoice-data copy
→
IRASSubmission outcome / acknowledgement
Simplified network overview. IRAS explains the invoice-data route.
Delivery and IRAS submission are distinct. A delivery status tells you about document exchange. An IRAS acknowledgement tells you about the invoice-data submission.
Understanding InvoiceNow
What is InvoiceNow?
InvoiceNow is Singapore’s nationwide e-invoicing network, based on the Peppol standard. It enables businesses to exchange invoice data in a structured digital format.
CoreMatter brings this document exchange together with GST invoice-data submission and status tracking.
Read the IRAS overviewAn emailed PDFA document to read and process
The recipient may need to enter invoice information into their accounting system.
An InvoiceNow e-invoiceStructured data between systems
Invoice information travels digitally through the network for the receiving system to process.
GST InvoiceNow
GST invoice-data submission from CoreMatter
GST InvoiceNow introduces phased requirements for GST-registered businesses to submit invoice data to IRAS.
CoreMatter supports invoice-data submission, status tracking and acknowledgements as part of its InvoiceNow functionality.
Check your firm’s requirements with IRASFor current implementation dates and eligibility, refer to IRAS.
Invoice-data submission
Manage GST InvoiceNow submissions within your CoreMatter workflow.
Acknowledgement visibility
See the IRAS outcome alongside your submission records.
Attention where it is needed
Use the overview to review statuses and identify records needing follow-up.
Singapore adoption roadmap
GST InvoiceNow implementation dates
The GST InvoiceNow requirement is being introduced in phases.
| From | Businesses covered |
|---|---|
| 1 November 2025 | Companies registering for GST voluntarily within six months of incorporation. |
| 1 April 2026 | All businesses applying for voluntary GST registration from this date. |
| 1 April 2028 | New compulsory GST applicants; existing GST businesses with annual supplies up to S$200,000. |
| 1 April 2029 | Existing GST businesses with annual supplies above S$200,000 and up to S$1 million. |
| 1 April 2030 | Existing GST businesses with annual supplies above S$1 million and up to S$4 million. |
| 1 April 2031 | Existing GST businesses with annual supplies above S$4 million. |
Existing-business thresholds use total supplies in GST accounting periods ending in 2025. Special rules and exclusions apply. These are regulatory dates, not CoreMatter launch dates. Check the IRAS e-Tax Guide and current requirements. Reviewed 6 September 2026.
Security & confidence
Security and accreditation
CoreMatter platform
CoreMatter’s published platform information describes encrypted connections, daily backups and role-based access.
Read platform information ↗InvoiceNow network
InvoiceNow exchanges structured documents through the Peppol network. Read IMDA’s guidance on how the network operates.
Explore the network ↗Accreditation status
CoreMatter’s InvoiceNow accreditation is in progress. Ask the team about current status and availability.
Discuss readiness →Onboarding
Getting started with the integration
Start with your firm’s requirements, then confirm the setup with CoreMatter.
01
Review your needs
Identify the documents your firm sends and receives, and the GST phase that applies.
02
Check your registration
Have your UEN and GST details ready. Tell the team if your firm already has a Peppol ID.
03
Confirm your setup
Discuss registration, authorisation, IRAS submission activation and any setup or training needs.
04
Agree your next steps
Confirm availability, support and readiness before moving into production.
Accreditation in progress. Contact CoreMatter to confirm onboarding availability for your firm.
Getting started
Before you contact us
Have these details ready so we can discuss your firm’s setup.
Contact CoreMatter- Know your GST requirementsCheck the IRAS implementation phase that applies to your firm.
- Have your registration details readyPrepare your firm’s UEN, GST details and any existing Peppol registration information.
- Discuss setup and availabilityAsk CoreMatter about accreditation progress, onboarding and the next steps for your firm.
Learn more
InvoiceNow resources
Learn about InvoiceNow and check your GST obligations.
Understand InvoiceNow
Learn about Singapore’s e-invoicing network and the move to structured invoice exchange.
Visit IMDA ↗GST InvoiceNow guidance
Read the official guide covering scope, implementation phases and invoice-data requirements.
Open the e-Tax Guide ↗Implementation & ongoing support
Contact and customer support
New to CoreMatter? Discuss how InvoiceNow fits your firm. Already using the platform? Contact customer support about your current setup.
Include your firm’s name, whether you already use CoreMatter and the InvoiceNow questions you want to cover.
Product & onboarding enquiries
Existing customer support
corematter@bnsasia.zohodesk.com
Contact routes published on the CoreMatter homepage.
Your questions, answered
InvoiceNow FAQs
Is CoreMatter accredited for InvoiceNow?
CoreMatter’s InvoiceNow accreditation is in progress. Contact the team for the latest status and availability for your firm.
What does the CoreMatter InvoiceNow integration cover?
Sending and receiving invoices and credit notes, orders and responses, GST invoice-data submission to IRAS, document status tracking and IRAS acknowledgements.
How is InvoiceNow different from emailing a PDF invoice?
A PDF is a document the recipient reads and processes. InvoiceNow exchanges structured invoice data between systems through the Peppol network, reducing manual handling.
Can my firm receive documents as well as send them?
Yes. CoreMatter’s InvoiceNow functionality includes both sending and receiving invoices and credit notes, together with orders and responses.
Are delivery status and IRAS acknowledgement the same?
No. Delivery status relates to the exchange of a document. An IRAS acknowledgement relates to submission of invoice data to IRAS. CoreMatter provides visibility over both.
Does GST InvoiceNow replace GST return filing?
No. Businesses must continue to meet their GST obligations, including filing GST returns and keeping proper records. Read the IRAS guidance.
Can existing CoreMatter customers use InvoiceNow?
Contact CoreMatter to confirm availability and the setup required for your firm. Accreditation is in progress. Ask the team about production availability.
Does my customer or supplier need CoreMatter?
InvoiceNow connects participating businesses through compatible solutions on the Peppol network. Your trading partner can use a different compatible finance system. Learn more from IMDA.
What if my firm already has a Peppol ID?
Tell the CoreMatter team about your existing registration when discussing onboarding, so the next steps can be confirmed for your current setup.
Where can my firm get help with setup?
Use the CoreMatter enquiry and customer-support routes to discuss onboarding, registration, activation and support needs.
Discuss InvoiceNow integration
for your CoreMatter system.
Discuss your firm’s requirements, accreditation progress and the next steps with CoreMatter.