1. Mandatory Fresh LUT for Exporters
Exporters supplying without payment of IGST must file a new LUT (Letter of Undertaking) for FY 2026–27 before issuing export invoices. Old LUTs expired on 31 March 2026.
2. Refund Claims Below ₹1,000 Allowed
The earlier restriction where GST refunds below ₹1,000 were not processed has been removed. Small exporters and businesses can now claim even lower refund amounts.
3. New Invoice Series Required
Businesses must start a fresh invoice numbering series from 1 April 2026 for:
- Tax invoices
- Debit notes
- Credit notes
Continuing old series may create reconciliation issues in GSTR-1.
4. Expansion of E-Invoicing
E-invoicing is now mandatory for businesses with aggregate turnover above ₹5 crore. Earlier thresholds were higher.
5. 30-Day Reporting Limit for Large Taxpayers
Businesses with turnover above ₹10 crore must upload e-invoices within 30 days on IRP. Delayed invoices may become invalid for ITC purposes.
6. IMS (Invoice Management System) Tightening
GSTN has strengthened IMS compliance:
- Vendors/customers must act on credit notes promptly
- Rejected credit notes can affect ITC and GSTR-3B liability
- Reconciliation requirements have become stricter
7. ECRS Monitoring
Electronic Credit Reversal & Reclaimed Statement (ECRS) mismatches may soon block return filing. Businesses should maintain accurate ITC reversal records.