Every GST-registered business in Singapore has to send invoice data to IRAS through the InvoiceNow network. Whether that is easy or awkward depends entirely on what you already run. Checked against IMDA's official accredited list.
Checked against IMDA's accredited InvoiceNow-Ready Solution Provider list dated 17 September 2026 and IRAS's free-of-charge package list dated 17 September 2026. Both change — verify against the current lists before you commit money. This is a guide, not advice, and is not affiliated with IRAS or IMDA.
InvoiceNow is Singapore's national e-invoicing network. Software accredited by IMDA as an InvoiceNow-Ready Solution Provider can send and receive e-invoices over the network and transmit the invoice data IRAS needs, without you building anything. This checker matches your software against IMDA's accredited list and IRAS's list of free packages.
IRAS is phasing the requirement in for GST-registered businesses, starting with new voluntary registrants (from 1 November 2025 for newly incorporated companies and 1 April 2026 for all new voluntary registrants), with existing registrants following in later phases. The free deadline finder and this guide give your date.
How do I know if my accounting software is InvoiceNow-ready? Check it against IMDA's list of accredited InvoiceNow-Ready Solution Providers. This tool does the match for you; if there is no match, check the official list before deciding.
What if my software is not on the list? Move to listed software, connect through an access point provider, or use one of the free packages IRAS lists, then check grants before paying.
When do I have to use InvoiceNow? IRAS is phasing it in for GST-registered businesses, starting with new voluntary registrants in 2025 and 2026, with existing registrants in later phases. Use the deadline finder for your date.