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Published on:

May 13, 2025

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Auto-Population of E-Invoices into GSTR-1: Key Insights

Talking about e-invoicing goods and services will bring some resolution to the way businesses manage their invoicing process, which will be good to go with the generation of invoices. Our systems have some electronic formats, including some that reduce errors. As of now, e-invoicing has become mandatory for businesses with an annual turnover exceeding ₹10 crores, making it indispensable for these objects to comprehend the e-invoice format to comply with GST regulations successfully. As per the reports, e-invoicing regulations may include adjustments to turnover should. So, in this article, we will focus on the auto-population of e-invoices into GSTR-1.

What is E-Invoice in GST?

E-Invoice, known as ‘Electronic invoicing,’ is a system in which all B2B invoices are machine uploaded and authenticated by the designated portal. It adheres to a precise format prescribed by the GST authorities.

It plays a critical role in the GST ecosystem by facilitating seamless data exchange between suppliers and tax authorities. E-invoicing integrates through the Invoice Registration Portal (IRP), where each e-invoice is allotted a unique Invoice Reference Number (IRN). Additionally, a QR code is generated, which contains indispensable details about the invoice, ensuring easy verification by tax authorities.

Key Components of an E-Invoice

So these are some

Field name	Description
Document Type Code	Every type of document has a code and this must be specified in this portion.
Supplier Legal Name	The name of the supplier according to the PAN card details.
Supplier GSTIN	The supplier GSTIN for e-invoice.
Supplier Address	The full address of the supplier including flat number, building no. etc.
Supplier Place	The city/village/town of the supplier must be specified here.
Supplier State Code	The state must be selected.
Supplier Pincode	The six-digit PIN code of the supplier’s address.
Document Number	A unique invoice number that makes sense to the business. It has to be sequential for easy identification.
Preceding Invoice Reference and Date	The original invoice details are being edited using a document such as a credit note.
Document Date	The date on which the invoice was issued.
Recipient Legal Name	The name of the buyer is specified as per his PAN card.

How Does E-Invoicing Work?

Generation of e-invoice

The taxpayer will continue to produce invoices in the normal course of business. However, the reporting of these accounts electronically has criteria. It needs to be done as per the e-invoice schema along with mandatory parameters. The compulsory fields of an invoice for the supply of goods are listed below:

Invoice Type

Code for invoice type

Invoice Number

Invoice Date

Supplier details like Name, GSTIN of Supplier, and Supplier address (plus location, pin code, and state)

Details of the buyer, such by means of name, GSTIN, state code, address, place, pin code, payee name, account number, and payment mode, in addition to IFSC code

Dispatch Details

The invoice item being dispatched.

Total tax amount paid amount, besides payment due

Tax scheme (whether GST, Excise Customs, VAT)

‘Shipping To’ details like Name, GSTIN, address, pin code, state, supply type, besides transaction mode (whether regular, ‘bill to’ or ‘ship to’)

Details of goods like Sl. no., quantity, rate, assessable value, GST rate, amount of CGST/SGST/IGST, total invoice value, batch number/name

The seller has to guarantee that his accounting/billing software is capable of producing a JSON of the final invoice.

Generation of unique IRN

The Supplier has the option to produce a ‘hash’ based on specific parameters, usually three of them, such as the Supplier’s GSTIN, the Supplier’s invoice number, and the Financial Year (YYYY-YY). A prescribed algorithm, such as SHA256, must be used for hash generation. If the hash is validated, it will later develop the Invoice Reference Number (IRN) of the e-invoice.

Uploading the JSON

The following modes may be used to upload the JSON of the final invoice:

Directly to the IRP

Through GST Suvidha Provider (GSP).

Third-party provided apps (through API).

The Supplier can also upload the hash along with the JSON to the IRP if he generates it.

Hash generation/validation

The hash will have to be made by the IRP with respect to the invoices uploaded that are short of the hash. In such a case, the hash produced by the IRP would become the IRN. Where the Supplier has also uploaded the hash, a de-duplication check will be made. This is done by validating the hash/IRN against the Central Registry of the GST System to ensure that the IRN is unique. Once legalized, the hash/IRN is stored in the Central Registry. IRP will then generate a QR Code, numerically sign the invoice, and make it available to the Supplier. The IRP also sends the e-invoice via e-mail cited on the statement to the buyer and seller.

Benefits of E-Invoicing

The basic aim behind the implementation of the e-invoice system is to pre-populate the returns and lessen the reconciliation challenges. This is achieved by the enterprise of the IRP system, which shares the invoice data with the GST and e-way bill system. Thus, continuous uploading of invoices will ensure that most of the details required in returns, as well as in the e-way bill, get auto-populated.

The following are some of the key benefits of e-invoicing:

Reduces reporting of the same invoice details numerous times in different forms. It’s just a one-time upload and everything, by means of required, will get pre-populated.

Part A of the e-way bill will be auto-captured and only transporter details will be updated.

When uploading invoices, the B2B details will be auto-captured in the GSTR-1 return.

Substantial reduction in input credit verification challenges by means of the same data will be reported to the tax subdivision as well as to the buyer in his inward supply (purchase) register (GSTR-2A).

On receipt of info from the GST System, a consumer can do a reconciliation with his Purchase register besides accept/reject it on time under New Return.

A complete trail of B2B invoices, besides system-level matching of input credit and output tax, helps to lessen tax evasion.

Increase efficiency in tax administration by eliminating fake invoices.

Compliance Requirements

E-invoicing is mandatory for GST-registered entities whose gross annual income exceeds ₹ five crore in any financial year since 2017-18. The rule came into effect on August 1, 2023. The modification has been made through Notice No. 10/2023 – Indian Taxation System, which intends to boost compliance and enable the digitalization of business contacts.

Suggested Read: What is the Cascading Effect of GST?

Conclusion

If you must cancel an e-invoice, then it must be done totally. If you do this, you must report it to the IRN within 24 hours of the cancellation. If you try to cancel an e-invoice after that period, then you cannot use the IRN. As an alternative, you need to use the GST portal for cancellation, which must be done manually. This has to be done prior to filing the returns. If you cancel, you cannot re-use the invoice number, and a newfangled one must be generated; otherwise, the IRP will reject it.

FAQs

How do you download auto-populated e-invoice details for form gstr-1?

Taxpayers can click on the 'Download details from e-invoice (Excel)' option on the GSTR-1 return form. However, if subsequent modifications are made to the documents which were auto-populated in the GSTR-1 tables, these changes will not be reflected in the Excel file.

Why did auto-population fail in GSTR-1?

There are numerous reasons why E-Invoice data does not get auto-populated in GSTR 1. Below is a thorough analysis of the same: 1. Document Date: The document date is prior to the reporting date, but GSTR 1 was already filed by that date.

How do I download an e-invoice list?

To download the e-invoice produced and received, users need to visit the e-invoice portal (https://einvoice.gst.gov.in) and log in using their GST portal authorisations. After logging in, users will find the e-Invoice JSON download icon.