| S. No. | Statue | Purpose | Compliance Period | Due date | Event Details |
| 1 | Income Tax | TDS/TCS Liability Deposit | Sep-21 | 7-Oct-21 | Due date of depositing TDS/TCS liabilities under Income Tax Act, 1961 for previous month. |
| TDS Deposit | July 2021- Sept. 2021 | 7-Oct-21 | Due date deposit of TDS for July-Sep. 2021 u/s section 192, 194A, 194D or 194H. | ||
| TDS Certificate | Sep-21 | 15-Oct-21 | Due date for issue of TDS Certificate for tax deducted under section 194-IA, 194-IB and 194M in the month of September 2021. | ||
| Furnishing Form 24G | Sep-21 | 15-Oct-21 | Due date of furnishing of Form 24G by an office of the Government where TDS/TCS for the month of September, 2021 has been paid without the production of a challan. | ||
| TCS Statement | July 2021- Sept. 2021 | 15-Oct-21 | Quarterly statement of TCS deposited for the quarter ending September 30, 2021. | ||
| Form- 3CEAB | FY 2020-21 | 31-Oct-21 | Intimation by a designated constituent entity, resident in India, of an international group in Form no. 3CEAB for the accounting year 2020-21. | ||
| TDS Certificate | July 2021- Sept. 2021 | 31-Oct-21 | Quarterly statement of TDS deposited for the quarter ending September 30, 2021. | ||
| Payment of Tax under VIVAD se Vishvas scheme | FY 2020-21 | 31-Oct-21 | Payment of tax under Direct Tax Vivad se Vishwas Act, 2020 with additional charge. | ||
| 2 | GST | GSTR-7- TDS return under GST | Sep-21 | 10-Oct-21 | GSTR 7 is a return to be filed by the persons who is required to deduct TDS (Tax deducted at source) under GST. |
| GSTR-8- TCS return under GST | Sep-21 | 10-Oct-21 | GSTR-8 is a return to be filed by the e-commerce operators who are required to deduct TCS (Tax collected at source) under GST. | ||
| GSTR-1 | Sep-21 | 11-Oct-21 | “1. GST Filing of returns by registered person with aggregate turnover exceeding INR 5 Crores during preceeding year. 2. Registered person, with aggregate turnover of less then INR 5 Crores during preceeding year, opted for monthly filing of return under QRMP.” | ||
| GSTR-1 | July 2021- Sept. 2021 | 13-Oct-21 | Registered person, with aggregate turnover of less than INR 5 crores during preceeding year and who has opted for quarterly filing of return under QRMP. | ||
| GSTR -6 | Sep-21 | 13-Oct-21 | Due Date for filing return by Input Service Distributors. | ||
| GST CMP-08 | Sep-21 | 18-Oct-21 | Due date of filing of GST CMP-08 for dealers opted for composition scheme. | ||
| GSTR – 3B | Sep-21 | 20-Oct-21 | “1. GST Filing of returns by registered person with aggregate turnover exceeding INR 5 Crores during preceeding year. 2. Registered person, with aggregate turnover of less then INR 5 Crores during preceeding year, opted for monthly filing of return under QRMP.” | ||
| GSTR – 3B | July 2021- Sept. 2021 | 20-Oct-21 | Due Date for filling GSTR – 3B return for the quarter of July to September, 2021 for the taxpayer with Aggregate turnover upto INR 5 crores during previous year and who has opted for Quarterly filing of return under QRMP. | ||
| GSTR -5 | Sep-21 | 20-Oct-21 | GSTR-5 to be filed by Non-Resident Taxable Person for the previous month. | ||
| GSTR -5A | Sep-21 | 20-Oct-21 | GSTR-5A to be filed by OIDAR Service Providers for the previous month. | ||
| GST ITC-04 | July 2021- Sept. 2021 | 25-Oct-21 | GST ITC-04 is to be filed to provide details of goods sent to Job Worker or received back. | ||
| 3 | Company Law | Form-8 | FY 2020-21 | 30-Oct-21 | Financial Reports of an LLP. |
| Form MSES | April 21 – Sept. 2021 | 31-Oct-21 | All specified companies should file a half-yearly return with the registrar for outstanding payments to Micro, Small and Medium Enterprise | ||
| 4 | Labour Law | Providend Fund / ESI | Sep-21 | 15-Oct-21 | Due Date for payment of Provident fund and ESI contribution for the previous month. |
Note 1: Not Opting for QRMP Scheme- Due Date for filing GSTR – 3B with Annual Turnover up to 5 Crore in State 1 Group (Chhattisgarh, Madhya Pradesh, Gujarat, Maharashtra, Karnataka, Goa, Kerala, Tamil Nadu, Telangana, Andhra Pradesh, Daman & Diu, and Dadra & Nagar Haveli, Puducherry, Andaman, and Nicobar Islands, Lakshadweep)
Note 2: Not Opting for QRMP Scheme- Due Date for filing GSTR – 3B with Annual Turnover up to 5 Crore in State 2 Group (Himachal Pradesh, Punjab, Uttarakhand, Haryana, Rajasthan, Uttar Pradesh, Bihar, Sikkim, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura, Meghalaya, Assam, West Bengal, Jharkhand, Odisha, Jammu and Kashmir, Ladakh, Chandigarh, Delhi)