Link4 Invoice Express User Guide - Activation and Submission for GST InvoiceNow, Peppol and IRAS

Sep 21, 2026

Link4 Invoice Express User Guide explains how to manage invoice and credit note workflows using the Link4 platform while meeting Peppol and IRAS compliance requirements. It covers the Link4 dashboard overview, onboarding steps for new users including CorpPass KYC, and the activation process for GST InvoiceNow submission. It also guides users through invoice transaction handling, credit note transaction processing, purchase transaction flows via Peppol or non-Peppol routes, and reporting & reconciliation through submission logs and reconciliation reports.

LanguageEnglish

CategoryPresentations

FormatPDF

Pages33

Reading Time12 min

AccessFree to download

1. INTRODUCTION

2. DASHBOARD OVERVIEW

3. ACTIVATION OF GST INVOICENOW SUBMISSION FOR GST-REGISTERED BUSINESSES

Step 1: Initiate GST InvoiceNow Activation

Step 2: Authorize via CorpPass

Step 3: Confirm Activation

4. INVOICE TRANSACTIONS

Understanding Different Invoice Types in Link4IE

Submitting Invoice Transactions to IRAS

5. CREDIT NOTES

Handling Credit Notes Transactions in Link4

Submitting Credit Note Transactions to IRAS

6. PURCHASES

Handling Peppol Purchases Transactions in Link4

Handling Non Peppol Purchases Transactions in Link4

7. ADDITIONAL INFORMATION

8. REPORTING & RECONCILIATION

Viewing Submission Logs Report

Reconciliation Report

User Guide Link4 Invoice Express -1- Table of Contents 1. INTRODUCTION 3 2. DASHBOARD OVERVIEW 3 3. ACTIVATION OF GST INVOICENOW SUBMISSION FOR GST-REGISTERED BUSINESSES 4 Step 1: Ini􀀋ate GST InvoiceNow Ac􀀋va􀀋on 5 Step 2: Authorize via CorpPass 6 Step 3: Con rm Ac􀀋va􀀋on 8 4. INVOICE TRANSACTIONS 9 􀀁 Understanding Di􀀍erent Invoice Types in Link4IE 9 􀀁 Submi􀀞ng Invoice Transac􀀟ons to IRAS 12 5. CREDIT NOTES 18 􀀁 Handling Credit Notes Transac􀀟ons in Link4 18 􀀁 Submi􀀞ng Credit Note Transac􀀟ons to IRAS 20 6. PURCHASES 23 􀀁 Handling Peppol Purchases Transac􀀟ons in Link4 23 ● Submi􀀞ng Peppol Purchases Transac􀀟ons to IRAS 23 􀀁 Handling Non Peppol Purchases Transac􀀟ons in Link4 26 ● Submi􀀞ng Non Peppol Purchases Transac􀀟ons to IRAS 27 7. ADDITIONAL INFORMATION 30 8. REPORTING & RECONCILIATION 31 􀀁 Viewing Submission Logs Report 31 􀀁 Reconcilia􀀟on Report 32 -2- 1. Introduction Welcome to the Link4 Invoice Express User Guide. This document is designed to provide you with a comprehensive understanding of how to use our platform effectively for managing invoices, credit notes, and reporting. Link4 Invoice Express is a robust tool that ensures compliance with Peppol and IRAS standards, streamlining your financial processes. 2. Dashboard Overview The Link4 Dashboard is your central hub for managing all invoice-related activities. It provides a summary of your transactions and allows easy navigation through various transaction types ready for submission. Link4 Dashboard Overview Description: The dashboard interface showing transaction summaries and navigation options. -3- 3. Activation of GST InvoiceNow Submission for GST-Registered Businesses Getting Started with Link4 IE To begin using Link4 IE, new users can sign up by providing their Name, Email, Phone Number, and UEN. No API connection from the client’s side is required, making the onboarding process simple and straightforward. Once the LINK4 signup is completed: 1. A user account is automatically created in Link4 IE. 2. A CorpPass authorization request is triggered to complete the KYC process. 3. The user will receive an email from CorpPass containing a link to log in and authorize the connection. 4. Login to your email, locate the email from CorpPass, and follow the instructions to complete the authorization. You will need to log in to CorpPass using your SingPass or any other registered credentials. Once you authorize Link4, you will receive a confirmation email from CorpPass indicating that the KYC process has been successfully completed. After completing the KYC process: 􀀁 The user is automatically added to the Link4 SG SMP (Service Metadata Publisher), enabling them to send and receive transactions through Peppol. 􀀁 The user’s Peppol ID can be viewed directly on the My Profile page. For more detailed information regarding the onboarding and KYC completion process, please visit our Help Desk. For a step-by-step walkthrough, please refer to our video guide. Following this, the user may proceed to activate GST InvoiceNow, which enables submission of transactions to IRAS. This allows users to manage their invoice submissions efficiently. For detailed instructions on activating InvoiceNow and submitting transactions to IRAS, please refer to the next page. -4- Step 1: Initiate GST InvoiceNow Activation Log in to Link4 Invoice Express. Navigate to Settings > Access Point > Activate GST Invoice Now Activate GST Invoice Now in Settings Click Yes"Enable GST Invoice Now Submission" and save. Once you click save-> The activation request from Link4 will be initiated to Corpass (Refer imp 2) Description: Status: Initiated _ Activation. Press [Save] -5- Step 2: Authorize via CorpPass 1. After the status 'Initiated Activation' , an email will be sent to your business representative to authorize the corpass account for Link4 to be your access point provider. 2. Once You receive the Ac

FAQs

How do new users get started with Link4 Invoice Express and complete onboarding?

New users sign up by providing Name, Email, Phone Number, and UEN. A CorpPass authorization request is triggered for KYC, and the user follows the authorization email link to complete the process.

What steps activate GST InvoiceNow submission for GST-registered businesses?

Users initiate GST InvoiceNow activation in Link4 settings and enable “GST InvoiceNow Submission”. They then authorize the access point provider via CorpPass, and after successful authorization they can send transactions to IRAS.

What are the main invoice submission responsibilities covered in the guide?

The guide explains how to identify different invoice types in Link4IE, select appropriate submission criteria (including PINT and foreign currency variants), and submit invoice transactions to IRAS.

Sep 21, 2026

Upload by Maya Linwood