The e-Invoicing system has been introduced to improve machine readability at the source document level itself – the invoice. The sheer number of invoices raised by large businesses can be staggering and tedious for the taxpayer to generate Invoice Reference Numbers (IRN) for each one separately.
This is why the Invoice Registration Portals (IRP), such as NIC and Clear IRP, have introduced the feature of a bulk generation facility for e-invoices. Continue reading to find out steps for bulk generation of e-invoices.
Key takeaways
- Multiple invoices in JSON format can be uploaded to be processed for IRN generation.
- Use e-Invoice portal's bulk generation utility to generate IRN in bulk.
- Four different formats for bulk e-invoice generation utility.
- These formats have been built as per the requirements of different classes of taxpayers and transactions.
The bulk generation facility is provided by the Invoice Registration Portal (IRP) where multiple invoices can be uploaded at once. It is an offline excel-based tool to generate e-invoices by exporting invoice data from the billing system/accounting software or ERP of the taxpayer.
The IRP would then accept a bulk request for uploading the JSON file of these invoices. After authentication, the IRP will generate a unique Invoice reference number (IRN) and Quick Response (QR) code for each e-invoice and digitally sign the e-invoice.
The taxpayer needs to have the EINV bulk convertor installed in his system. This is an excel-based offline utility of the NIC’s IRP or e-invoice portal which helps convert multiple invoices entered in the excel sheet into a single JSON file for bulk upload. In order to download this tool, visit the e-invoice portal.
Also, users (having turnover Rs.100 crore or more) must ensure that the invoices or credit-debit notes date not reported to IRP beyond 7 days of the invoice/CDN date. However, on 6th May 2023, the department has deferred the time limit of 7 days to report the old e-invoices on the IRP portals by three months. Also, it is yet to announce the new implementation date.
Go to Help > Tools > Bulk Generation Tools. Select the tool which is most appropriate.

The JSON preparation tool on NIC’s e-invoice portal or IRP comes in 4 formats. These formats have been built as per the requirements of different classes of taxpayers and transactions. The user needs to download the one which is most appropriate for his business.
Format A contains a single worksheet for invoice and items details to be entered. The user can prepare the JSON file for uploading a large number of e-invoices by a single upload to the Invoice Registration Portal (IRP).

Format B contains two worksheets for invoice and items details to be entered separately.

Format C contains five worksheets for invoice details, items details, payment details, reference details and additional details to be entered separately.

Format D contains a single worksheet for invoice details, item details, payment details, reference details and additional details to be entered in the same worksheet.


After downloading the afore-mentioned utility, follow these steps below:
Step 1: Enter all the basic details as required in the ‘Profile’ sheet.

Step 2: Enter all the details of the invoices in the necessary fields as given in the ‘Invoice’ sheet.

Step 3: Once the invoice details are entered, to ensure that e-invoice schema is followed, validate the details using the ‘Validate’ button.
Step 4: Upon successful validation, click on the ‘Prepare JSON’ button. The JSON file will be generated, which will contain details of the multiple invoices entered.
Step 5: Log in to the e-invoice portal. Go to e-invoice > Bulk upload. Click on ‘Choose file’.

Step 6: Select the JSON file generated earlier and click on upload. Ensure that the size of the JSON file is not more than 2MB. A summary of the contents of the JSON file will be displayed.

Step 7: Click on the ‘Confirm’ button. If there are no errors, each invoice will be assigned a 64-character length Invoice Reference Number (IRN) and the option to download the same in excel format will be available.

The system will then update the invoice details to the e-way bill system. The e-way bill system will create Part-A of the e-way bill using this data. Only the vehicle number will need to be attached in Part-B of the e-way bill.