Important dates of GST Return (Period July to December)
| GST Return Form | Due Date |
| Due date of GSTR-3B (November 2017) | 20th, December 2017 |
| Due date of GSTR-3B (December 2017) | 20th, January 2018 | Due date of TRAN-1 | 27th, December 2017 |
| Quarterly return for composition dealers (Due date of GST Composition Scheme dealers ) | |
| Due date of GSTR-4 (July-September, 2017) | 24th, December 2017 |
| Due date of GSTR-4 (October-December,2017) | 18th, January 2018 |
| Quarterly return for registered persons with aggregate turnover up to Rs. 1.50 crores | |
| Due date of GSTR-1 (July-September, 2017) | 31st, December 2017 |
| Due date of GSTR-1 (October-December, 2017) | 15th, February 2018 |
| Monthly return for registered persons with aggregate turnover of more than Rs. 1.50 crores | |
| Due date of GSTR-1 (July-October, 2017) | 31st, December 2017 |
| Due date of GSTR-1 (November, 2017) | 10th, January 2018 |
