Important dates in March 2020 for compliance under GST are as follows: –
| Due date | Forms | Period | Description |
| March 10, 2020 | GSTR-7 | February, 2020 | Return for Tax Deducted at source to be filed by Tax Deductor |
| March 10, 2020 | GSTR-8 | February, 2020 | E-Commerce operator registered under GST liable to TCS |
| March 11, 2020 | GSTR-1 | February, 2020 | Taxpayers having an aggregate turnover of More than Rs. 1.50 Crores or opted to file Monthly Return |
| March 13, 2020 | GSTR-6 | February, 2020 | Every Input Service Distributor (ISD) |
| March 20, 2020 | GSTR-5 & 5A | February, 2020 | Non-resident ODIAR services provider file Monthly GST Return |
| March 20, 2020 | GSTR-3B | February, 2020 | Taxpayer having Turnover of ₹ 5 crores or more in previous financial year (monthly return) |
| March 22, 2020 | GSTR-3B | February, 2020 |
Taxpayer having turnover of less than ₹5 crores in previous financial year (monthly return) in the state of:
|
| March 24, 2020 | GSTR-3B | February, 2020 |
Taxpayer having turnover of less than ₹5 crores in previous financial year (monthly return) in the state of:
|
| March 31, 2020 | GSTR 9 | Financial Year 2018-19 | Taxpayers having an aggregate turnover of more than Rs. 2 Crores or opted to file Annual Return. |
| March 31, 2020 | GSTR 9C | Financial Year 2018-19 | Reconciliation Statement/ Audit Report for Taxpayers having a Turnover of more than Rs. 2 crores. |