{"id":50981,"date":"2026-08-26T04:17:49","date_gmt":"2026-08-26T04:17:49","guid":{"rendered":"https:\/\/www.you.co\/biz\/?p=50981"},"modified":"2026-08-26T04:21:04","modified_gmt":"2026-08-26T04:21:04","slug":"gst-invoicenow-requirement","status":"publish","type":"post","link":"https:\/\/www.you.co\/biz\/blog\/gst-invoicenow-requirement\/","title":{"rendered":"E-Invoicing in Singapore: GST InvoiceNow Rules & Deadlines (2026)"},"content":{"rendered":"\n

Your deadline depends on how much your business sold in 2025<\/strong><\/h2>\n\n\n\n
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Every GST-registered business in Singapore will eventually have to send its invoice data straight to IRAS through InvoiceNow<\/strong>, the national e-invoicing network. The rollout has already started. New voluntary GST registrants have been in scope since 1 April 2026<\/strong>, and the last group follows by 1 April 2031<\/strong>.<\/p>\n\n\n\n

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Which year you land in isn’t a choice. It’s set by your total annual supplies in calendar year 2025, and IRAS is notifying existing businesses of their date directly. This guide covers when yours falls, what you actually have to send, what it costs, and the one funding rule that catches businesses out.<\/p>\n\n\n\n

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GST InvoiceNow at a Glance<\/strong><\/h2>\n\n\n\n
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Highlights<\/strong><\/th>Details<\/strong><\/th><\/tr><\/thead>
What it is<\/td>Sending invoice data to IRAS via the InvoiceNow<\/strong> network, built on the international Peppol<\/strong> standard<\/td><\/tr>
Who it covers<\/td>All GST-registered businesses<\/strong>, phased in from 1 Nov 2025 to 1 Apr 2031<\/strong><\/td><\/tr>
Already live<\/td>All new voluntary GST registrants<\/strong> since 1 Apr 2026<\/strong><\/td><\/tr>
Your date<\/td>Set by total annual supplies in calendar year 2025<\/strong> (Box 4 of your GST return)<\/td><\/tr>
What you send<\/td>Standard-rated, zero-rated and exempt supplies, plus standard-rated and zero-rated purchases<\/td><\/tr>
Cost<\/td>Free<\/strong> solution packages run to 31 Mar 2031<\/strong>; cash grants of S$1,000<\/strong> to S$25,000<\/strong><\/td><\/tr>
Who’s out<\/td>Certain overseas entities and reverse-charge-only registrants<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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The date itself is the easy part. The work sits in the system change. Your accounting software has to be accredited, connected, and switched on before your deadline.<\/p>\n\n\n\n

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Larger businesses integrating their own ERP are told to allow 3 to 12 months<\/strong> just for the connection to IRAS. Leaving it to the quarter before is how a compliance date turns into a scramble.<\/p>\n\n\n\n

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Table of Contents<\/strong><\/h2>\n\n\n\n
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  1. What is e-invoicing in Singapore?<\/strong><\/a><\/li>\n\n\n\n
  2. What is the GST InvoiceNow requirement?<\/strong><\/a><\/li>\n\n\n\n
  3. How Peppol and InvoiceNow fit together<\/strong><\/a><\/li>\n\n\n\n
  4. GST InvoiceNow deadlines: the full timeline<\/strong><\/a><\/li>\n\n\n\n
  5. Who is in scope, and who is excluded<\/strong><\/a><\/li>\n\n\n\n
  6. What data you actually have to submit<\/strong><\/a><\/li>\n\n\n\n
  7. How to comply, in four steps<\/strong><\/a><\/li>\n\n\n\n
  8. Grants and free solutions<\/strong><\/a><\/li>\n\n\n\n
  9. What happens if you miss your deadline<\/strong><\/a><\/li>\n\n\n\n
  10. Cross-border invoices and foreign-currency spend<\/strong><\/a><\/li>\n\n\n\n
  11. FAQs<\/strong><\/a><\/li>\n<\/ol>\n\n\n\n
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    What Is E-Invoicing in Singapore?<\/strong><\/h2>\n\n\n\n
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    E-invoicing means sending an invoice as structured data that another finance system can read directly. That replaces the PDF or paper copy someone would otherwise have to key in by hand.<\/p>\n\n\n\n

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    In Singapore it runs on InvoiceNow<\/strong>, the nationwide e-invoicing network. IMDA describes it as the direct transmission of invoices in a structured digital format from one finance system to another. The network is built on Peppol<\/a>, an international standard. IMDA has been Singapore’s Peppol Authority since May 2018, and began accrediting solution providers in 2019.<\/p>\n\n\n\n

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    Three terms get used interchangeably, and it helps to keep them apart:<\/p>\n\n\n\n

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