> ## Documentation Index
> Fetch the complete documentation index at: https://docs.invopop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Singapore's e-invoicing regulation timeline

> Key dates and milestones for Singapore's InvoiceNow e-invoicing and GST reporting requirements

<Card title="Invoicing compliance in Singapore" size="20" icon="book-open-lines" href="/compliance/singapore" horizontal>
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</Card>

## Timeline

Current and upcoming regulation for Singapore.

<Update label="Now" tags={["B2B", "B2G"]}>
  **E-invoicing and e-reporting systems enforced to date**<br />
  Existing systems enforced in Singapore regarding e-invoicing and e-reporting.

  | System                                                            | Description                                                                                                                                  | Invopop Coverage |
  | ----------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- | ---------------- |
  | [GST InvoiceNow Requirement](#gst-invoicenow-requirement-b2b-b2g) | Peppol-based e-invoicing and near real-time reporting to IRAS. Mandatory for newly incorporated companies that voluntarily register for GST. | Coming Q1 2026   |
  | [GST F5 Reporting](#gst-f5-reporting)                             | Quarterly aggregate GST return filed via IRAS myTax Portal. Mandatory for all GST-registered businesses.                                     | Coming Q1 2026   |
</Update>

<Update label="1 Apr 2026" tags={["B2B", "B2G"]}>
  **GST InvoiceNow Requirement extended to all new voluntary GST registrants**<br />
  All businesses that voluntarily register for GST from this date must comply with the GST InvoiceNow Requirement, regardless of business type or incorporation date.

  | System                                                            | Description                                      | Invopop Coverage |
  | ----------------------------------------------------------------- | ------------------------------------------------ | ---------------- |
  | [GST InvoiceNow Requirement](#gst-invoicenow-requirement-b2b-b2g) | Mandatory for all new voluntary GST registrants. | Coming Q1 2026   |
</Update>

<Update label="Future (tbd)" tags={["B2B", "B2G"]}>
  **GST InvoiceNow Requirement extended to all GST-registered businesses**<br />
  IRAS has confirmed the mandate will extend to new compulsory GST registrants and eventually all existing GST-registered businesses in subsequent phases. Specific dates have not yet been published.
</Update>