Invoice reference number (IRN) is a unique number that can be generated for any invoice uploaded on the IRP (invoice registration portal). We will cover all the aspects related to IRN in this blog.

What is IRN?

The full form of IRN is Invoice Reference Number which is a 64 character unique number that can be generated for all the invoices on the IRP using a hash generation algorithm under the e-invoicing system. At the time of providing invoice to the recipient, the supplier needs to mention IRN (invoice reference number).

Details used to generate IRN?
List of prerequisites to generate IRN:

  1. A person must be GST registered person for generating IRN
  2. The taxpayer must have required documents - invoice, credit or debit note.  

Example of Invoice Reference Number

GSTN of the supplier - 21AAMFF1571T10R

Financial year - 2019-2020

Document type - CDN

Invoice number - 2019-20/DL/01

How to generate an Invoice Reference Number (IRN)

The taxpayer who comes under the e-invoicing mandate needs to generate an e-invoice with IRN and a signed QR code. One can easily generate IRN under the new e-invoicing system either as an e-invoicing portal or by integrating e-invoicing software in the existing ERPs.

Who is eligible to generate E-invoice?

The company’s turnover that exceeds Rs 5 crores dealing in B2B and export supplies needs to generate an e-invoice.

Invoice Reference Number (IRN) validity

The IRN generated for an invoice will stay forever. However, any e-invoice generated on IRP stays for up to 24 hours. After that, you cannot download the generated e-invoice.

How to validate an e-invoice?

IRP issues IRN and QR code after registration of an e-invoice through which the buyer can easily validate an e-invoice, whether it is registered or not.

How can GimBooks help you?

GimBooks is a one stop GST compliance software provider that offers industry-leading GST, e-way bill and e-invoicing software.