Everything you need to know about e-invoicing mandates, IRP integration, and staying compliant as regulations evolve.
E-invoicing has expanded rapidly. From large businesses to now many SMEs, the mandate keeps growing. Here's what you need to know for 2025.
Who Is Covered?
From April 2025, businesses with aggregate turnover above ₹5 Cr in any financial year from 2021–22 onwards must generate e-invoices for B2B and export supplies. Check your turnover—if you're close, plan now.
How It Works
Generate invoice in your system → Send to Invoice Registration Portal (IRP) → IRP validates and returns IRN + QR code → Include both on your invoice. The IRP also pushes data to GST portal for GSTR-1 auto-population.
IRP Integration Options
- •API integration: Direct connection from your ERP/accounting software
- •GSP (GST Suvidha Provider): Use a certified intermediary
- •Offline tool: Manual upload for low volume
- •Bulk upload: For high-volume businesses
Common Mistakes
- •Wrong invoice format—ensure JSON schema compliance
- •Duplicate IRN for same invoice
- •Missing or incorrect buyer GSTIN
- •Not cancelling IRN when invoice is cancelled
Credit and Debit Notes
Credit and debit notes also need e-invoicing if the original invoice was e-invoiced. Link them to the original IRN. Plan for returns and adjustments in your workflow.
Start integration at least 2 months before your applicability date. Testing, vendor training, and edge cases take time.
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