Due dates
Simple Phase 1 calendar. Always re-check the official portal — clocks move by notification.
| Return | Typical clock | Note |
|---|---|---|
| GSTR-1 | 11th | Monthly filers; QRMP uses IFF for M1/M2 |
| GSTR-3B | 20th | Monthly liability & ITC claim window |
| IFF (QRMP) | 13th | First two months of the quarter |
| TDS deposit | 7th (30th for March) | Challan before return |
| ITR (non-audit) | 31 Jul 2026 | AY 2026-27 indicative — confirm portal |
Interest / late fee remain government costs. We remind; we do not waive statutory dues.