India mandates GST e-invoicing for turnover ≥ ₹5 crore: the invoice is registered with an IRP that returns an IRN and signed QR code before it is valid for input-tax credit.
India's GST regime mandates e-invoicing for businesses with annual turnover of ₹5 crore or more: the invoice JSON is registered with an Invoice Registration Portal (IRP), which returns an Invoice Reference Number (IRN) and a signed QR code before the invoice is valid and can support input-tax credit. A GSTIN is required for both parties where applicable, and the standard GST slab is 18%. Exports may be zero-rated under a Letter of Undertaking (LUT) or made on payment of IGST. Records must be kept for 6 years.
At minimum, an invoice issued in India should carry these fields:
Last reviewed June 9, 2026
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