| S. No. | Statue | Purpose | Compliance Month/Period | Due Date | Extended Due Date (If any) | Event Details |
| 1 | Income tax | TDS/TCS Payment | Aug-21 | 07-Sep-21 | 7-Sep-21 | Due date of depositing TDS/TCS liabilities under Income Tax Act, 1961 for previous month. |
| 2 | GST | GSTR-7 – TDS Return | Aug-21 | 10-Sep-21 | 10-Sep-21 | GSTR-7 is a return to be filed by the persons who is required to deduct TDS under GST. |
| 3 | GST | GSTR – 8 TCS Return | Aug-21 | 10-Sep-21 | 10-Sep-21 | GSTR-8 is a return to be filed by the e-commerce operators who are required to deduct TCS under GST. |
| 4 | GST | GSTR-1 | Aug-21 | 11-Sep-21 | 11-Sep-21 | 1. GST Filing of returns by registered person with aggregate turnover exceeding INR 5 Crores during preceding year. 2. Registered person, with aggregate turnover of less then INR 5 Crores during preceding year, opted for monthly filing of return. |
| 5 | GST | Invoice Furnishing Facility – (IFF) | Aug-21 | 13-Sep-21 | 13-Sep-21 | Invoice furnishing facility for August, 2021 is available for registered person who have opted for quarterly filing of return under QRMP. |
| 6 | GST | GSTR -6 | Aug-21 | 13-Sep-21 | 13-Sep-21 | Due Date for filing return by Input Service Distributors (ISD). |
| 7 | Income tax | TDS Certificate | Aug-21 | 14-Sep-21 | 14-Sep-21 | Due date for issue of TDS Certificate for tax deducted under section 194-IA, 194-IB and 194M in the month of August, 2021 |
| 8 | Labour Law | Providend Fund / ESI | Aug-21 | 15-Sep-21 | 15-Sep-21 | Due Date for payment of Provident fund and ESI contribution for the month of August 2021. |
| 9 | Income tax | Form 3BB by Stock Exchange | Aug-21 | 15-Sep-21 | 15-Sep-21 | Form 3BB is the monthly statement to be furnished by a stock exchange in respect of transactions in which client codes been modified after registering in the system for the month of August 2021 |
| 10 | Income tax | Furnishing Form 24G | Aug-21 | 15-Sep-21 | 15-Sep-21 | Due date of furnishing of Form 24G by an office of the Government where TDS/TCS for the month of July, 2021 has been paid without the production of a challan |
| 11 | Income tax | Advance Tax (2nd Installment) | AY 2022-2023 | 15-Sep-21 | 15-Sep-21 | Second instalment of advance tax for the assessment year 2022-23 |
| 12 | GST | GSTR – 3B | Aug-21 | 20-Sep-21 | 20-Sep-21 | Due Date for filling GSTR – 3B return for the month of August, 2021 for the taxpayer with Aggregate turnover exceeding INR 5 crores during previous year |
| 13 | GST | GSTR -5 | Aug-21 | 20-Sep-21 | 20-Sep-21 | GSTR-5 to be filed by Non-Resident Taxable Person for the previous month. |
| 14 | GST | GSTR -5A | Aug-21 | 20-Sep-21 | 20-Sep-21 | GSTR-5A to be filed by OIDAR Service Providers for the previous month. |
| 15 | GST | GSTR – 3B-X State* | Aug-21 | 22-Sep-21 | 22-Sep-21 | Due Date for filling GSTR – 3B return for the month of August, 2021 for the taxpayer who has opted for monthly filing of GSTR-3B |
| 16 | GST | GSTR – 3B-Y State** | Aug-21 | 24-Sep-21 | 24-Sep-21 | Due Date for filling GSTR – 3B return for the month of August, 2021 for the taxpayer who has opted for monthly filing of GSTR – 3B |
| 17 | GST | GST Challan payment if no sufficient ITC available | Aug-21 | 25-Sep-21 | 25-Sep-21 | GST Challan Payment for taxpayer who has opted for quarterly filing of returns. |
| 18 | Income tax | TDS challan cum statement | Aug-21 | 30-Sep-21 | 30-Sep-21 | Due date for furnishing of challan-cum-statement in respect of tax deducted under section 194-IA, 194-IB, 194M for the month of August, 2021 |
| 19 | Income tax | Linking PAN with Aadhar | 1st April, 2019 onwards | 30-Sep-21 | 30-Sep-21 | Linking of PAN with Aadhar is mandatory from 1st April 2019 (due date Extended from 31 March 2021 to 30th June 2021 vide notif. S.O. 1432(E), dated 31-03-202) (further extended from 30 June 2021 to 30 September 2021 (vide Circular no. 12/2021, dated 25-06-2021) (if not linking the PAN with Aadhar then the PAN will be inoperative and a person will not be able to conduct financial transactions) |
| 20 | Income tax | Income Tax Return | AY 2021-2022 | 31-Jul-21 | 30-Sep-21 | “Return of income for the assessment year 2021-22 for all assessee other than: (a) corporate-assessee or (b) non-corporate assessee (whose books of account are required to be audited) or (c) partner of a firm whose accounts are required to be audited or the spouse of such partner if the provisions of section5A applies or (d) an assessee who is required to furnish a report under section 92E. (Due date for furnishing of return of income for Assessment Year 2021-22 has been extended from July 31, 2021 to September 30, 2021 vide Circular no. 9/2021, dated 20-05-2021)” |
| 21 | Others | Registration on Udyam Portal | 1st April, 2021 onwards | 01-04-2021 onwards | MSMEs registrated prior to 30th June 2020, there MSME registration shall remain valid only up to 31 December, 2021, i.e., after this date it is mandatory for each and every enterprise to register itself on Udyam portal. | |
| 22 | MCA | Form AOC-4 filling by OPC (One Person Company) | FY 2020-21 | 27-Sep-21 | 27-Sep-21 | Form AOC 4 is used to file the financial statements for each financial year with the Registrar of Companies (ROC) |
| 23 | MCA | Form DIR-3 (KYC for Director) | FY 2020-21 | 30-Sep-21 | 30-Sep-21 | DIR-3 KYC is an annual e-form which is to be filed by every Director/Partners/Designated Partners who has been allotted a ‘Director Identification Number’ (DIN) as on 31st March of a financial year and is to be submitted as an e-form DIR-3-KYC to the Central Government on or before 30th September of immediate next Financial Year. |
| 24 | GST | Apply for revocation of cancellation of GST Registration falling between 1st March, 2020 to 31st August, 2021 | Within 90 days from date of cancellation of GST Registration | 30th September, 2021 | In view of the notification 34/2021 -Central dated 29th Aug 2021, where the due date of filing of application for revocation of cancellation of registration falls between 1st March, 2020 to 31st August, 2021, the time limit for filing such application for revocation of cancellation of registration has been extended up to 30th September, 2021. |
*X-States: 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.
**Y-States: 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
