Advisory: E-Invoice Glossary and Steps
18/08/2023
Dear Taxpayers,
GSTN has prepared an informative resource in the form of an e-invoice glossary and a step-by-step guide for your reference.
You can access and download the PDF document by clicking on the link below:
1.E-Invoice Glossary: https://tutorial.gst.gov.in/downloads/news/pamphlet_e_invoicing_glossary_updated_17_08_2023_approved_final.pdf
2.Step by Step Guide: https://tutorial.gst.gov.in/downloads/news/pamphlet_e_invoice_overview_updated_on_17_08_2023_approved_final.pdf
Thanking You,
Team GSTN
Glossary on e-Invoicing
● e-Invoicing: ‘e-Invoicing’ means reporting details of specified GST documents to a Government-notified
portal i.e., Invoice Registration Portal (IRP) and obtaining an Invoice Reference Number (IRN). It doesn’t mean the
generation of invoices by a Government portal.
● IRP (Invoice Registration Portal): It is a government approved platform where notified persons upload or report
invoices. Currently, six portals are authorised to generate IRN on reporting of invoices as per Rule 48(4) of the CGST
Rules. Reporting invoices and generating Invoice Reference Numbers (IRN) on any of these portals is free of charge.
● IRN (Invoice Reference Number): The unique identifier for every invoice reported on an IRP. It is based on the
computation of a hash of the supplier’s GSTIN, the financial year, the document type, and the document number.
● AATO (Annual Aggregate Turnover): AATO (Annual Aggregate Turnover) for e-Invoicing is calculated based on
the PAN of a taxpayer and the information provided in their GSTR-3B returns. It represents the total turnover of the
taxpayer during a financial year and is used to determine the applicability of e-Invoice reporting requirements.
● Enablement: The process of registering and enabling a taxpayer for e-Invoicing on the GST portal, allowing them to
report e-Invoices on any of the six IRPs. Taxpayers are automatically enabled for e-Invoicing based on AATO but if
not enabled they need to be self-enabled on the portal (https://einvoice.gst.gov.in)
● GSTIN (Goods and Services Tax Identification Number): A unique identification number assigned to each
registered taxpayer under the GST system.
● GSTR-1: A monthly or quarterly return that taxpayers need to file, which contains details of outward supplies, including
e-Invoice data.
● Debit Note: A document used to record a reduction in the value of a previously issued invoice, typically issued by the
seller
● Credit Note: A document used to record an increase in the value of a previously issued invoice, typically issued by the
seller.
● e-Invoice QR Code: A type of two-dimensional barcode that can be read by a digital device and provides information
about the invoice. The QR code generated for e-Invoicing includes parameters such as the supplier’s GSTIN, the
recipient’s GSTIN, invoice number, date of generation of the invoice, invoice value, IRN, etc..
● e-Invoice QR Code Verifier App: A mobile application that allows users to scan and validate the QR codes on eInvoices.
● e-Invoice FO (Front Office) Portal: The official web portal provided by GSTN where taxpayers can access various
e-Invoice-related functionalities, including enablement status, e-Invoice generation, and searching for IRNs. It also
provides links to all six IRPs, e-Invoice schema, master codes, enablement status, search IRN functionality, etc. (Link
https://einvoice.gst.gov.in )
● JSON Format: JSON (JavaScript Object Notation) is a standard data interchange format. For e-Invoicing, the
invoice data must be uploaded in a predefined schema INV01 in JSON format.
● API for e-Invoice Reporting: IRPs offer API-based functionality for reporting e-Invoices. API (Application Programming Interface) is a set of protocols for building and integrating software applications.
● B2B Invoices: These are invoices issued in a business-tobusiness transaction. E-invoicing requirements in India
currently apply to B2B invoices for certain taxpayers, based on their annual turnover.
● ERP System: Enterprise Resource Planning (ERP) system is a type of software used by companies to manage their dayto-day business activities. Taxpayers can continue to generate invoices from their current ERP system, but details of all such B2B invoices need to be uploaded or reported on an Invoice Registration Portal (IRP) in a notified format.
● OTP: One-Time Password (OTP) is a password that is valid for only one login session or transaction. During the
registration process on an IRP, an OTP is sent to the registered mobile number for verification.
● Auto-population: This refers to the automatic filling in of data in a field. In the context of e-Invoicing, once an e-Invoice
has been validated and has received an IRN, the data from the e-Invoice is auto-populated into the supplier’s GSTR-1 form in the GST system.
● e-Invoice schema: (INV-1 – Version 1.1) The e-Invoice schema is a predefined and standardised framework that
defines the structure of the e-Invoice, including mandatory and optional fields, their format and rules for the generation
of an e-Invoice.
● Master codes: Master codes refer to a set of pre-defined codes used in the e-Invoicing system, such as HSN codes,
country codes, currency codes, state codes, and others.
● Signed e-Invoice: This refers to an e-Invoice that has been digitally signed by the Invoice Registration Portal (IRP) after
validation. The signed e-invoice is provided with a unique IRN and QR code.
Disclaimer: The information provided above is intended for guidance and support purposes only. Taxpayers are advised to refer to the relevant sections of the GST Act and Rules for legal definitions and interpretation. The content shared does not constitute legal advice. Users are responsible for ensuring compliance with applicable laws and
regulations.