Free GST tool
E-invoice applicability checker
Find out whether your client must generate an IRN for B2B invoices.
Indicative guidance based on law reviewed as of 13 October 2026. Always confirm against the notification in force and the facts of the case; this is not legal advice.
Check a whole client, not one invoice
Upload a purchase register and see every ineligible credit, rate mismatch and missing-in-2B invoice with the clause behind it.
Or take the 30-day full trial — every Professional feature, 3 GSTINs.