DISCLAIMER: This article is for informational purposes only and does not constitute legal, tax, financial, or investment advice. Laws and regulations vary by jurisdiction and change frequently. Always consult a qualified professional before making any decision.
On 15 April 2026, the GST Council issued Circular 204/26/2026-GST clarifying that all exporters—including those under SEZ/EOU regimes—must now file export invoices via the standardised Invoice Registration Number (IRN) API. The June 30 deadline marks the end of a 75-day transition window. Non-compliant invoices risk 50 per cent input tax credit (ITC) denial under Rule 36(4) and heightened GST audit scrutiny. For manufacturers and traders managing export documentation, this is a material operational and compliance shift.
Market signals
Previously optional for exports, IRN filing is now compulsory for all export invoices, including those to Free Trade Agreement (FTA) jurisdictions and duty-free supplies. The GST Authority has clarified that this applies regardless of supply mode (direct, consignment, or via intermediaries).
CBIC guidance (issued 20 May 2026) confirms that GST return processing will flag missing or malformed IRN entries and automatically deny matching ITC claims. Appeals require documentary proof of API submission attempt dated on or before 30 June.
The GST Network (GSTN) released the updated Invoice Management System (IMS) 2.5 API specification on 3 May 2026. Manual e-invoice upload via the portal will cease on 1 July 2026. All invoices must transit via integrated accounting software or direct API calls.
Under the CGST Act, 2017 and GST (Manufacture of Excisable Goods in SEZ) Rules, failure to file export invoices via IRN triggers two material risks: (1) ITC disallowance of up to 50 per cent on matched supplies, creating cash-flow strain and audit liability; (2) potential default interest and penalties under Section 122A if treated as wilful non-compliance. Vinayakam Consultants supports exporters and SEZ/EOU units through API integration audits, export invoice taxonomy reviews, and GST return reconciliation to ensure compliant filing before the 30 June deadline. We also advise on legacy invoice remediation and engage CBIC on behalf of clients facing disallowance notices.
Your action checklist
- Audit all export invoice templates against the updated IRN schema (Annex 1, Circular 204/26/2026-GST); verify HSN codes, supply type flags, and recipient GSTIN/UIN fields match API specifications.
- Test API integration with your accounting software provider or GSTN sandbox environment by 20 June 2026; request a certificate of successful test run and retain for audit defence.
- Reconcile all export invoices issued between 16 April and 30 June 2026 against IRN acknowledgement logs; identify and resubmit any missing or failed records to avoid ITC denial in July returns.
- Brief your GST return filer and internal compliance team on the new filing workflow; document handover of responsibility for IRN validation to prevent mid-month discovery of submission gaps.
Frequently asked questions
All exporters must file export invoices via the IRN API by June 30, 2026. The 75-day transition window ends on this date, after which non-compliant invoices risk 50% ITC denial.
Non-compliant invoices trigger automatic 50% input tax credit (ITC) denial under Rule 36(4) and heightened GST audit scrutiny during return processing.
Yes, the IRN mandate now covers all exporters, including those operating under SEZ/EOU regimes and supplies to FTA jurisdictions.