Due dates for GST Returns after May 2018
| GST Return Forms | Month/Quarter | Last Date of Filing Returns |
| GSTR-1: Outward Supplies | May 2018 onward | 10/06/2018 |
| GSTR-3B: Summary Return | May 2018 onward | 20/06/2018 |
| GST TRAN 2 | May 2018 onward | 30/06/2018 |
| GSTR-1: Outward supplies for taxpayers whose turnover is up to Rs.1.5 crore | May 2018 onward | 31/07/2018 |
| GSTR-4 : Quarterly Return for Composition dealers | May 2018 onward | 18/07/2018 |
| RFD-10 | Eighteen months after end of the quarter for which refund is to be claimed | |