11 Dec 23 "Monthly Return of Outward Supplies for November. Note : Taxpayer having difference in ITC in GSTR-2B & GSTR-3B of earlier months, will not be able to file GSTR-1/IFF if he does not file response in DRC-01C Part B."

13 Dec 23 Optional Upload of B2B invoices, Dr/Cr notes for November under QRMP scheme. Note : Taxpayer having difference in ITC in GSTR-2B & GSTR-3B of earlier months, will not be able to file GSTR-1/IFF if he does not file response in DRC-01C Part B.

13 Dec 23 Monthly Return by Non-resident taxable person for November.

13 Dec 23 Monthly Return of Input Service Distributor for November.

15 Dec 23 Issue of TDS Certificate u/s 194-IA for TDS deducted on Purchase of Property in October.

15 Dec 23 Issue of TDS Certificate for tax deducted u/s 194M on certain payments by individual/HUF in October.

15 Dec 23 Issue of TDS Certificate for tax deducted u/s 194S on Virtual Digital Assets in October.

15 Dec 23 Deposit of Third Instalment of Advance Tax (45%) by all assesses (other than 44AD & 44ADAD cases).

15 Dec 23 Details of Deposit of TDS/TCS of November by book entry by an office of the Government.

15 Dec 23 E-Payment of PF for November.

15 Dec 23 Payment of ESI for November

20 Dec 23 Monthly Return by persons outside India providing online information and data base access or retrieval services, for November. Also to be filed by every registered person providing online money gaming from a place outside India to a person in India.

20 Dec 23 Summary Return cum Payment of Tax for November by Monthly filers. (other than QRMP).

25 Dec 23 Deposit of GST under QRMP scheme for November .

31 Dec 23 Updation of Nomination details or express opting out in Demat/Trading/Mutual fund accounts to avoid deactivation.