| 10-Dec | Tue | GSTR-7 (Monthly) |
| 10-Dec | Tue | GSTR-8 (Monthly) |
| 11-Dec | Wed | GSTR-1 (Monthly) |
| 13-Dec | Fri | B2B Outward Supplies for QRMP (IFF) |
| 13-Dec | Fri | GSTR-5 (Monthly) |
| 13-Dec | Fri | GSTR-6 (Monthly) |
| 20-Dec | Fri | GSTR-5A (Monthly) |
| 20-Dec | Fri | GSTR-3B (Monthly) |
| 25-Dec | Wed | PMT-06 (for QRMP) |
| 28-Dec | Sat | GSTR-11 |
| 31-Dec | Tue | GSTR-9 & 9C |