The Complete Guide To InvoiceNow Singapore (2026 Edition)

Lydia Chin

5 mins read

Published:

9 October 2025

Updated:

21 January 2026

Get a steady hand on GST.

New to InvoiceNow? Imagine sending a bill that goes straight from your accounting software into your customer’s system, ready to be processed and paid. No emails, no PDFs, and no manual data entry! This is what InvoiceNow does.

This guide explains the network simply, why Singapore businesses are using it, and how it fits into the new GST e-invoicing rules, so you can be ready for the upcoming deadlines.

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What is InvoiceNow?

InvoiceNow is Singapore’s official, nationwide network for sending and receiving digital invoices. It is managed by the Infocomm Media Development Authority (IMDA).

It uses a secure, global standard called Peppol. This means your accounting software (like Xero or QuickBooks) can exchange data directly with your customer’s software, even if they use a different brand.

This direct, digital transfer is what makes it a true e-invoice, unlike a simple email with a PDF attached.

Why switch to Invoice Now?

Manual invoicing is slow and prone to mistakes. InvoiceNow fixes this by automating the process, giving your business key benefits:

💡 Benefit	📈 Why it matters for your business
Get paid faster	Invoices arrive instantly and are ready for approval, helping you get your money quicker.
Stay compliant	It supports IRAS’ GST InvoiceNow Requirement to transmit invoice data to IRAS via InvoiceNow-Ready Solutions.
Eliminate human error	Since clean, structured data is transferred automatically, there are zero typos or lost invoices.
Full automation	The system also supports digital purchase orders, making your entire buying-and-paying workflow hands-free.
Future-proofing	It uses an international system (Peppol), making it easy to send invoices to customers in multiple countries (including Australia and Europe).
Secure & trusted	All transactions are protected and sent through IMDA-certified Access Points (APs) on the secure InvoiceNow network.

Skip the confusion.

How does Invoice Now work?

Here’s a quick look at how the process works under Singapore’s new GST InvoiceNow Requirement:

You create a bill in your InvoiceNow-Ready accounting software.
The invoice is sent instantly through the secure Peppol network.
It lands directly in your customer’s InvoiceNow-Ready solution through an AP connection.

GST InvoiceNow Requirement: Key dates and scope

Important dates to know

1 May 2025 – Soft launch:
IRAS encourages all GST-registered businesses and new applicants to start transmitting e-invoice data via InvoiceNow.
1 November 2025 (Mandatory):
Applies to newly incorporated companies that voluntarily register for GST. These businesses must use InvoiceNow-Ready solutions to send data to IRAS.
1 April 2026 (Mandatory):
Extends to all new voluntary GST registrants, regardless of incorporation date.

Transmission deadlines

Businesses must transmit invoice data by the earlier of:

The date of GST return filing, or
The official filing due date for that period.

This ensures your GST submission stays compliant and up to date.

Scope of data covered

The GST InvoiceNow requirement applies to:

Standard-rated supplies
Zero-rated supplies
Exempt supplies
Standard-rated purchases
Zero-rated purchases

Certain transactions, such as deemed supplies and specific financial services, are excluded.

Disclaimer: Always check the latest guidelines by the IRAS for full details.

InvoiceNow support & incentives

To encourage more businesses to go digital, IMDA and IRAS offer several grants and incentives that make it easier and cheaper to start using this network.

These programmes help new and small businesses adopt e-invoicing without upfront costs.

InvoiceNow Accelerate Programme: If your business was incorporated on or after 1 April 2024, you can get one year of free InvoiceNow services from participating solution providers through this programme by IMDA.
FOC/PSG options: Businesses using IMDA-accredited InvoiceNow-Ready Solution Providers (IRSPs) may be eligible for the Productivity Solutions Grant (PSG) and receive up to S$30,000 for IT solutions and equipment, including InvoiceNow-Ready Solutions. IRAS and IMDA have also worked with IRSPs to provide Free-of-Charge (FOC) solution packages to reduce adoption and integration costs.

How Sleek helps you stay compliant and future-ready

InvoiceNow sends invoices system-to-system on the Peppol network, cutting admin and errors while setting you up for the phased GST InvoiceNow Requirement.

If you want your invoicing, books, and GST filings to run cleanly with fewer surprises, Sleek can step in where it matters most.

Fast, guided GST registration: Clear eligibility guidance and help with the IRAS process before you enable e-invoicing.
Expert GST return filing, done on time: Preparation, input and output tax checks, nil returns when needed, and support for F7 corrections to stay compliant.
Accounting and other services: Ongoing bookkeeping, monthly or quarterly closes, payroll services, and statutory compliance under one roof.
Easy to reach, easy to start: Book a meeting or contact the team by phone or form.

With Sleek, you’ll stay ahead of IRAS requirements, keep your books in sync, and free up hours you can spend growing your business instead of chasing payments.

Keep invoices flowing and GST on track.

FAQs on InvoiceNow in Singapore

Is InvoiceNow the same as online invoicing?

Not exactly. Online invoicing (like sending a PDF by email) is just a digital document; it still requires the recipient to manually enter the data. InvoiceNow, on the other hand, is true e-invoicing: it sends structured data directly between accounting systems, reducing errors and speeding up payments.

Do I need special software to use InvoiceNow?

Yes. You need an InvoiceNow-Ready Solution (IMDA-accredited) connected to the InvoiceNow network via an Access Point (AP).

How can InvoiceNow e-invoicing help businesses save costs?

InvoiceNow helps businesses cut costs by streamlining the entire invoicing process. You’ll see faster payments, fewer manual tasks, and lower admin expenses. Banks are already working on systems that let users flip an InvoiceNow e-invoice directly into an e-payment, reducing delays even further.

Can I use InvoiceNow for overseas customers?

Yes. The Peppol network operates in several countries, including Singapore, Australia, and much of Europe, making cross-border e-invoicing simple and secure.

Is InvoiceNow secure?

Absolutely. All InvoiceNow transactions are encrypted and transmitted through certified access points approved by IMDA, ensuring your data stays protected and compliant.

Is there a charge for using InvoiceNow e-invoices?

Most Access Points (APs) and Solution Providers (SPs) do charge transaction fees for sending and receiving InvoiceNow e-invoices. However, pricing models vary. Some offer a limited number of free e-invoices, often enough for small businesses, while others bundle e-invoicing into larger product packages. You’ll also find tiered plans where the cost per transaction drops as your volume increases.