The Govt. has notified the due date of filing quarterly GSTR-1 for the taxpayers having annual aggregate turnover up to Rs. 1.5 crore. The due dates for the period of July to September, 2018, October to December, 2018 and January to March, 2019 are October 31, 2018, January 31, 2019 and April 30, 2019 respectively.