Singapore’s InvoiceNow initiative — the national e-invoicing network built on the Peppol standard — is moving from opt-in to mainstream. From 1 November 2025, all new GST-registered businesses were required to use InvoiceNow-compliant accounting software from the date of GST registration. From 1 April 2026, re-registrants are subject to the same requirement. Voluntary adoption is also being actively encouraged for all other GST-registered businesses.

To ease the transition, IMDA launched the InvoiceNow Transition Grant from 1 July 2026. The grant is available to eligible businesses that adopt InvoiceNow-compliant software — with the highest tier offering up to S$25,000. This article explains the three tiers, who qualifies, and how to apply.

What Is InvoiceNow?

InvoiceNow is Singapore’s national e-invoicing framework, built on the open Peppol (Pan-European Public Procurement On-Line) network. It allows businesses to send and receive structured electronic invoices directly between accounting systems without PDFs, manual data entry, or email. The data flows end-to-end in a machine-readable format, reducing processing errors and enabling faster payment cycles.

Unlike PDF invoicing, InvoiceNow transmits invoice data directly into the recipient’s accounting system. This eliminates manual data entry and supports automated reconciliation. IRAS can also, with consent, receive InvoiceNow invoice data for pre-filled GST return purposes under the InvoiceNow for GST initiative.

The Three Tiers of the InvoiceNow Transition Grant

The grant has three distinct tiers, each targeted at a different business size and adoption scenario.

Tier 1 — S$1,000 (small GST-registered businesses)

This tier targets small GST-registered businesses with annual taxable supplies of S$4 million or below. The grant provides a S$1,000 lump sum to cover the cost of adopting InvoiceNow-compliant software. This is intended for businesses that primarily need to send and receive e-invoices via InvoiceNow and are upgrading from manual invoicing or PDF-based systems.

No stated expiry date has been announced for Tier 1 as at the date of this article, but grants are first-come, first-served and subject to available budget.

Tier 2 — S$5,000 (ERP integration for mid-sized businesses)

The second tier is for GST-registered businesses with annual taxable supplies above S$4 million that are integrating InvoiceNow into an ERP or accounting system via an Application Programming Interface (API). The S$5,000 grant covers implementation costs associated with the ERP integration project.

Important deadline: Tier 2 closes in March 2028. Businesses that require ERP integration should plan and apply well before this date. Given that ERP integration projects typically require lead time, starting the project in late 2026 or 2027 is advisable to ensure claims can be submitted before the window closes.

Tier 3 — S$25,000 (large enterprises building InvoiceNow trading networks)

The highest tier is aimed at large enterprises with the capacity and supply chain relationships to drive InvoiceNow adoption at scale. To qualify for the S$25,000 grant, a business must onboard at least 200 suppliers or customers onto InvoiceNow — creating a trading network within its supply chain.

This tier is targeted at businesses such as large retailers, manufacturers, and procurement-heavy organisations whose supplier or customer base would benefit significantly from e-invoicing. The enterprise itself must use InvoiceNow-compliant software and actively enable its trading partners to transact via InvoiceNow.

Tier 3 closes in March 2030.

Who Is Eligible?

All three tiers require the applicant to be a GST-registered business in Singapore that adopts InvoiceNow-compliant accounting or ERP software. The business must be registered with IMDA’s Peppol-enabled network via an Access Point Provider. Eligibility for each tier also depends on annual taxable turnover (Tier 1 vs Tier 2) and the scope of network activity (Tier 3).

Businesses that are mandated to use InvoiceNow (i.e., new GST registrants from 1 November 2025 and re-registrants from 1 April 2026) may also apply for the grant to offset their compliance costs — the mandate and the grant are not mutually exclusive.

How to Apply

Applications are submitted through the Business Grants Portal (BGP) at businessgrants.gov.sg. The process is as follows:

Step 1: Log in to the Business Grants Portal using your Corppass credentials.

Step 2: Search for the InvoiceNow Transition Grant and select the applicable tier.

Step 3: Complete the application, providing your GST registration number, confirmation that you have adopted InvoiceNow-compliant software, and (for Tier 2) evidence of the ERP integration project or (for Tier 3) confirmation of the number of trading partners onboarded.

Step 4: Submit the application. IMDA will assess eligibility and disbursement timeline.

Grant disbursement is subject to IMDA’s assessment and verification of InvoiceNow adoption. Businesses should retain records of their software adoption and onboarding activity as supporting documentation.

Choosing InvoiceNow-Compliant Software

Not all accounting software is InvoiceNow-compliant. IMDA maintains a list of approved InvoiceNow-ready accounting and ERP solutions on its website. Common solutions available in Singapore include Xero, QuickBooks, Sage, and a range of local and regional ERP providers that have been certified as Peppol Access Points or have integrated with certified Access Points.

When selecting software, verify that it is listed on IMDA’s InvoiceNow Solutions directory and that it supports both the sending and receiving of Peppol-format invoices via the Singapore network. Our accounting team can assist with assessing whether your current software qualifies or advise on migration options. See our accounting and bookkeeping services for more.

Acting Quickly on Tier 2

Of the three tiers, Tier 2 has the most pressing deadline. Mid-sized businesses with taxable turnover above S$4 million that are planning ERP integration should not defer. The S$5,000 grant helps offset professional implementation fees and is designed precisely for businesses at this scale. ERP integration projects that begin in 2027 may leave insufficient time for claims before the March 2028 window closes.

Businesses that are uncertain whether their current ERP qualifies or want to scope the integration cost should seek a preliminary assessment from their software vendor or an external adviser in 2026.

Further Information

For the full grant terms and to check approved software solutions, visit the IMDA InvoiceNow page and the Business Grants Portal. For IRAS’s InvoiceNow for GST initiative (pre-filled GST returns), see IRAS’s dedicated guidance on its website.

Singapore Secretary Services provides corporate secretarial, accounting, and compliance support for Singapore businesses. Contact us at our contact page or email [email protected].

This article is for general information only and does not constitute legal or financial advice.