What is the IRAS GST InvoiceNow Requirement?
The IRAS GST InvoiceNow Requirement is Singapore's obligation for qualifying GST-registered businesses to transmit their B2B invoice data directly to the Inland Revenue Authority of Singapore via InvoiceNow-Ready accounting software. The transmission must occur at or before the issuance date of the tax invoice or the ERP posting date, and must be completed prior to the filing due date of the relevant GST return.
When must invoice data be transmitted to IRAS?
The IRAS GST InvoiceNow Requirement specifies that invoice data transmission must be triggered by the earlier of the issuance date of the tax invoice or the transaction posting date within the ERP system. In all cases, the transmission must be completed before the filing due date of the GST return for the relevant period. This means businesses cannot batch-transmit invoice data at return filing time; transmission must be near-contemporaneous with invoice issuance or posting.
Which businesses are currently excluded from the requirement?
The IRAS GST InvoiceNow Requirement currently excludes overseas entities under the Overseas Vendor Registration (OVR) full and Pay-only regimes, and businesses that are liable for GST registration solely due to the Reverse Charge regime. These exclusions reflect the fact that the transmission requirement is designed for domestically established GST registrants with access to InvoiceNow-Ready software. IRAS has indicated that compulsory GST registrants will be brought into scope in a future phase following further consultation.
Frequently Asked Questions
- Does the InvoiceNow Requirement apply to all invoices or only tax invoices?
- The requirement applies specifically to GST tax invoices—the documents that give buyers the right to claim GST input tax credits. The IRAS e-Tax Guide on GST InvoiceNow provides detailed guidance on document type scope.
- Can a business use any accounting software to comply with the IRAS requirement?
- No. The business must use InvoiceNow-Ready software that has been accredited by IMDA and includes built-in connectivity to the InvoiceNow network. Using software that generates PDF invoices and manually submitting them does not satisfy the GST InvoiceNow Requirement.