GST IMS Offline Tool: End-to-End User Guide for Bulk Invoice Management
The Goods and Services Tax network has progressively strengthened the Invoice Management System (IMS) to help assessees manage invoices reported by their suppliers. Starting from the October 2024 tax period, IMS on the GST portal allows the recipient to mark invoices uploaded through GSTR-1, GSTR-1A or IFF as accepted, rejected, pending, or leave them with no action.
To further streamline compliance and reduce dependence on continuous internet connectivity, an Excel-based IMS Offline Tool has been rolled out on the GST portal. This utility enables assessees to download invoice data in bulk, work on it offline, and then push the updated status back to the portal using JSON files.
This article explains:
- What the IMS Offline Tool is and why it matters
- How it interacts with the online IMS dashboard
- Step-by-step procedure to download, use, validate and upload data
- Key validations and error handling
- Practical compliance pointers for assessees
1. Understanding the GST Invoice Management System (IMS)
1.1 Purpose of IMS
The Invoice Management System (IMS) was introduced on the GST portal for the October 2024 tax period with the objective of providing a structured way for recipient assessees to act on invoices uploaded by their suppliers.
Through IMS, the recipient can:
- Confirm that a supplier’s invoice is correct and accept it
- Disagree with an invoice and reject it
- Keep an invoice under review and mark it as pending
- Choose no action where immediate marking is not required
These actions are taken on documents reported by suppliers in:
GSTR-1GSTR-1AInvoice Furnishing Facility (IFF)
Note: IMS helps assessees in systematic invoice reconciliation and better control over Input Tax Credit (ITC) related compliance.
1.2 Evolution: From Online IMS to Offline Tool
Initially, IMS functionality was available only through the online dashboard on the GST portal. While effective, this required:
- Continuous internet access
- Handling invoice actions one-by-one or with limited bulk capabilities
- Longer time for large-volume assessees (e.g., large enterprises, multi-location entities)
To address these pain points, the GST system has introduced an Excel-based IMS Offline Tool, now available for all assessees through the GST portal.
2. IMS Offline Tool – Key Features and Benefits
2.1 Excel-Based, User-Friendly Utility
The IMS Offline Tool is designed on MS Excel, making it relatively simple to use for most GST assessees and accountants who are already familiar with spreadsheets.
Core capabilities include:
- Working offline without being continuously logged into the GST portal
- Taking actions on individual invoices or bulk invoice sets
- Using filter options to sort and view invoices based on multiple parameters
- Performing data validation before generating JSON for upload
2.2 End-to-End Workflow
The typical process using the IMS Offline Tool involves:
- Downloading the Excel-based tool from the GST portal
- Downloading IMS invoice data as a JSON file from the IMS dashboard
- Importing the JSON file into the offline Excel utility
- Applying actions (Accept/Reject/Pending/No Action) and remarks
- Validating the sheet using the in-built validation button
- Generating a new JSON file
- Uploading this JSON back on the IMS dashboard
Important: The offline tool is aligned with the same business rules and validations that apply on the online IMS dashboard.