Q: Will the slides be shared, and how will they be sent?
A: A
summary detail will be sent to your registered email on 14.May.2026.
Q: Can users reach out for support after the session when
implementing?
A: Yes.
For further assistance, please email to: support@ocisg.com or call hotline
6295-5177 or text WhatsApp us at 6295-5177.
Q: How to implement a Mobile Dashboard App?
A: Support Team will implement phrases by customer group from 14.May.2026
onwards. The whole exercise may take 2 to 4 months. Do approach support@ocisg.com if you want to join the priority
queue.
Q: Difference between Invoicenow and GST Invoicenow
A:
InvoiceNow (Optional) - Send Peppol invoices to customers and receive Peppol
invoices from suppliers.
GST InvoiceNow (Mandatory in phrase) - Send Non-Peppol and Peppol invoices data
directly to IRAS via the InvoiceNow network.
Q: Useful Link
A: https://www.iras.gov.sg/taxes/goods-services-tax-(gst)/gst-invoicenow-requirement
https://www.imda.gov.sg/how-we-can-help/nationwide-e-invoicing-framework/invoicenow
Q: Any fee to activate and use GST InvoiceNow?
A: Existing SAM Hosting users can enjoy a fee waiver for activating and using the GST InvoiceNow Module.
Not on SAM Hosting yet? Contact our Sales Consultant to arrange a demo and explore how it benefits your business.
· The date on which the relevant GST return is filed; or
· The filing due date of the relevant GST return.
The “relevant GST return” refers to the GST return covering the prescribed accounting period when the date of the transaction occurs.
Q: Mandatory Transaction
A:
Businesses are required to transmit to IRAS data on the following transactions
that are reported in the GST return:
· Standard-rated supplies
· Zero-rated supplies
· Exempt supplies
· Standard-rated purchases
· Zero-rated purchases
The invoice data to be transmitted includes data on an invoice or an equivalent document that serves as bill for payment (or adjustment of bill for payment) for supplies and purchases made. Examples of documents that serve as bill for payment include sales invoice, tax invoice, simplified tax invoice, serially numbered receipts, debit notes and credit notes.
Businesses can choose to aggregate supplies data from point-of-sale system, supplies where simplified tax invoices are issued, and petty cash purchases data before transmitting to IRAS.
Q: Excluded Transaction
A:
Invoice data on the following types of transactions are excluded from the scope
of data collection and need not be transmitted to IRAS:
1. Transactions where there are no underlying supplies or purchases but are regarded as supplies or purchases to be reported solely for GST purposes. Examples include deemed supplies, goods exported without sales
2. Reverse charge transactions
3. Exempt financial services, and exchange or loan of digital payment tokens
4. Import permits for importation of goods
The above replaces the draft scope of transactions in the draft e-Tax guide published during the Public Consultation. Please refer to the e-Tax Guide Adopting GST InvoiceNow Requirement for GST-registered Businesses (PDF, 1024KB) for more details.
Q: What happens if an invoice is issued but payment is not
received?
A:
Please refer to the above mandatory transaction. If you refer to Sales
Invoices, official receipt is excluded. If you refer to Misc Payment without
Supplier Invoice, it will be a mandatory transaction.
Q: All invoices must be submitted to the IRAS system
automatically?
A:
Please refer to the above mandatory transaction and excluded transaction. Users
have the option to send the data by batch function to IRAS, alternatively send
one by one.
Q: How to handle GST (input/output tax) for bad debts?
A:
Please issue a credit note.
Q: Cannot find the C5 button on top of the supplier
invoice?
A: Please check the following.
Q. Can we amend the invoice after we sign up to GST
InvoiceNow?
A: Yes.
Please resend the data one by one or by batch to IRAS after amended.
Q: Real time for invoice submission to Client or IRAS?
A: For GST InvoiceNow, PEPPOL invoice data real time submission to IRAS and
your customer. For Non PEPPOL invoice data, users have the option to send the
data by batch function to IRAS, alternatively send one by one.
Q. Can users hold the invoice for submission to IRAS?
A: By not triggering the PEPPOL and C5 button. Do refer back to GST InvoiceNow
Due Date to avoid late submission.
Q: If a customer is not on the PEPPOL network?
A: For Non PEPPOL invoice, users have the option to send the data by batch
function to IRAS, alternatively send one by one.
Q: Free 100 e-invoices per month, how about the subsequence
fee?
A:
Starting 1 January 2026, Hosting Plan users can send 100 outgoing e-invoices
via PEPPOL per month basis at no additional cost.
Please note that unused credits do not carry forward to the following month. Incoming e-invoices is FREE. Subsequence $0.25 per outgoing e-invoices via PEPPOL, min purchase 10 invoices (valid one month). Free for incoming invoice.
Q: Is it mandatory to send invoices via e-invoicing to
customers?
A: Users
can continue to send via email, pdf or hard copy. Is an option to send
e-invoices via PEPPOL.