| 7-10-2021 | GST New Update! Due date for deposit of tax deducted/collected for the month of September, 2021. |
10-10-2021 | GSTR 7 – Summary of Tax Deducted at Source (TDS) and deposited under GST laws for the month of September 2021 |
| GSTR 8 – Summary of Tax Collected at Source (TCS) by e-commerce operators under GST law for the month of September 2021 | |
| 11-10-2021 | GSTR 1 – Monthly filling for Assessee having Annual Turnover above Rs. 5 crores for the month of September 2021 |
13-10-2021 | GSTR 1 – Quarterly filling for Assessee having Annual Turnover upto Rs. 5 crores for the month of July to September 2021 |
| GSTR 6 – Details of Input Tax Credit (ITC) received and distributed by an Input Service Distributor (ISD) for the month of September 2021 | |
15-10-2021 | Due date for issue of TDS Certificate for tax deducted under section 194-IB, 194-IA & 194M in the month of August, 2021 |
| Quarterly statement of TCS deposited for the quarter ending September 30, 2021 | |
| 18-10-2021 | CMP 08 for the period of July to September 2021 |
20-10-2021 | GSTR 3B – Monthly filling for Assessee having Annual Turnover above Rs. 5 crores and Assessee not opted for QRMP Scheme for the month of September 2021 |
| GSTR 5 – Summary of outward taxable supplies and tax payable by the non-resident taxable persons for the month of September 2021 | |
| GSTR 5A – Summary of outward taxable supplies and tax payable by Online Information and Database Access or Retrieval Services (OIDAR) provider for the month of September 2021 | |
| 22-10-2021 | GSTR 3B – For Assessee opted for QRMP Scheme for Category X State for the month of July to September 2021 |
| 24-10-2021 | GSTR 3B – For Assessee opted for QRMP Scheme for Category Y State for the month of July to September 2021 |
| 25-10-2021 | ITC -04 – Form to be filed by a manufacturer to report the summary of goods sent to or received from a job-worker for the quarter July to September 2021 |
30-10-2021 | Due date for furnishing of challan-cum-statement in respect of tax deducted under section 194-IA, 194-IB & 194M in the month of September, 2021 |
| Quarterly TCS certificate (in respect of tax collected by any person) for the quarter ending September 30, 2021 | |
| Form 8 i.e Statement of Accounts & Solvency of LLP | |
31-10-2021 | Quarterly statement of TDS deposited for the quarter ending September 30, 2021 |
| Payment of tax under the Direct Tax Vivad se Vishwas Act, 2020 with additional charge | |
| Form MSME – All specified companies should file a half-yearly return with the registrar for outstanding payments to Micro, Small and Medium Enterprises for the period April 2021 to September 2021 | |
| GSTR 4 for the FY 2020-21 |
