Filing of Annual Return ( GSTR-9 ) for FY 2017-18 and FY 2018-19 has been made "OPTIONAL" for the taxpayers having Aggregate Turnover upto Rs. 2 crores vide Notification No. 47/2019 - Central Tax, dated 09th October 2019 read with Circular No. 124/43/2019 - GST , dated 18th November 2019.
Therefore it is Mandatory only for those taxpayers whose Aggregate Turnover exceeds Rs. 2 crores for FY 2017-18 & FY 2018-19.