Bulk IRN generation on the GSTN IRP - every invoice validated, every QR code ready

IRN (Invoice Reference Number) is a unique 64-character alphanumeric hash generated by the GSTN Invoice Registration Portal (IRP) after validating your invoice data. Every e-invoice (B2B, B2C large, export) must have an IRN. The IRP generates it using SHA256 hashing of key invoice parameters.

You submit invoice data (GSTINs, invoice details, HSN/SAC codes, tax values, place of supply) to the IRP via the web portal, bulk Excel/CSV upload, or API. The IRP validates the data and returns an IRN, a signed QR code, and an acknowledgment (ACK or REJECT with error code).

The IRN is a 64-character alphanumeric string. It is generated by the IRP using a SHA256 hash of key invoice parameters (GSTIN of supplier, GSTIN of recipient, invoice number, financial year, document type, etc.).

No. IRN generation through the GSTN IRP portal is completely free. However, the operational effort to generate IRNs in bulk - data preparation, validation, handling rejections - has a significant time cost. Professional IRN generation services charge a monthly fee for this management.

An IRN can be cancelled within 24 hours of generation. After 24 hours, you must issue a debit or credit note instead. We set up alerts to flag errors before the cancellation window closes.

Yes. The IRP supports bulk IRN generation via Excel/CSV template upload and via API. For our managed service, you simply share your invoice data and we generate IRNs for all invoices in a single batch - typically processing 500+ invoices in under 15 minutes.

Common rejection reasons include: duplicate invoice number within FY, invalid GSTIN format, invalid HSN/SAC codes, wrong place of supply, mismatched invoice value vs. item totals, and invalid taxpayer details. Our pre-validation catches these before submission.

IRN duplication occurs when the same invoice (same supplier GSTIN, same invoice number, same FY) is submitted to the IRP twice. The IRP rejects it with error code ERR-1101. We maintain a ledger of all generated IRNs to prevent duplicate submissions.

Yes, if your ERP has IRN generation capability (Tally, Zoho Books, QuickBooks). We provide API integration services to connect your ERP to the IRP for automated IRN generation at the point of invoice creation.

ERR-1101 means the IRN has already been generated for the same invoice number in the same financial year. This happens when the same invoice is submitted twice. Fix: cancel the duplicate submission and re-submit only once.

Yes. Credit notes and debit notes linked to B2B, B2C large, or export invoices also require IRN generation. We track notes separately and include them in the monthly IRN generation cycle.

The IRP generates an IRN in under 2 seconds per invoice. For a batch of 500 invoices, bulk generation typically takes 10-15 minutes. Our end-to-end service (data collection to QR code delivery) is completed within 2-3 business days after month-end.

B2B and B2C large invoices without an IRN are considered invalid for input tax credit (ITC) purposes under GST law. The buyer cannot claim ITC, and the supply may attract GSTN scrutiny. Our missed IRN recovery service finds and generates IRNs for invoices that were missed.

No. B2C invoices below Rs. 50,000 (for intra-state supplies) are exempt from e-invoicing. Only B2B, B2C large (above Rs. 50,000), export, and SEZ supplies require IRN generation under current GST rules.

No. IRN cancellation is only possible within 24 hours of generation. After 24 hours, you must issue a credit or debit note (which will itself need an IRN) to correct the original invoice. We recommend setting up pre-validation to avoid errors within the 24-hour window.

The e-invoice is the entire invoice (all fields, taxes, items, etc.). IRN is just the unique 64-character reference number generated for that e-invoice by the IRP. Every e-invoice gets one IRN. The IRN + QR code make the invoice 'authenticated' by GSTN.

GSTN provides its own free IRP portal, but taxpayers can also use accredited third-party IRPs (e.g., ClearTax, Tally, Mastek, Deloitte, etc.). All IRPs connect to the same GSTN system and generate the same IRN. We work with multiple IRPs based on your preference.

Our monthly service includes: bulk IRN generation, data validation, rejection handling and re-submission, QR code delivery in your preferred format, GSTR-1 reconciliation, missed IRN recovery, and a monthly compliance report. The Basic plan covers up to 200 IRNs/month, Standard up to 1,000, and Enterprise is unlimited.