Important dates in October, 2019 for compliance under GST are as follows:-
| Due date | Forms | Period | Description |
| October 10, 2019 | GSTR-7 | September 2019 |
Return for Tax Deducted at source to be filed by Tax Deductor |
| October 10, 2019 | GSTR-8 | September 2019 |
E-Commerce operator registered under GST liable to TCS |
| October 11, 2019 | GSTR-1 | September 2019 |
Taxpayers having turnover of more than Rs. 1.50 crores or opted to file monthly Return |
| October 13, 2019 | GSTR-6 | September 2019 |
Every Input Service Distributor |
| October 18, 2019 | CMP-08 | July to September 2019 | Quarterly Challan-cum statement for payment of self-assessed tax by composition taxpayers |
| October 20, 2019 | GSTR-3B | September 2019 |
All registered persons to pay GST and file Monthly Summary GST Return |
| October 20, 2019 | GSTR-5 | September 2019 |
Non-resident person pay GST and file Monthly GST Return |
| October 20, 2019 | GSTR-5A | September 2019 |
Non-resident ODIAR services provider file Monthly GST Return |
| October 31, 2019 | GSTR-1 | July to September 2019 |
Taxpayers having turnover upto Rs. 1.50 crores and opted to file Quarterly Return |
