GST return is mandatory for all persons having GST registration. This is irrespective of business activity or sales or profitability during the return filing period. GST registration holders are required to file GSTR-1 (details of outward supplies) , GSTR-2 (details of inward supplies) and GSTR-3 (monthly return) of each month. At ARK Advisors we provide end to end service with regards to GST filing.