The due date for filing FORM GSTR-1 for the month of March, April and May 2020 has been extended to "30.06.2020" and all the applicable Late Fees ( levied u/s 47 of the CGST Act 2017 ) has been waived off, as per Notification No. 33/2020 - Central Tax, dated 03.04.2020.
Yes Agree with Mr. Shivam : The due date is not extended but if it's filed by 30/6/2020 no late is applicable . For same kindly refer the Notification 35/2020-CT (Section 37 is not covered)
Note : Conjoint Read Notification 33,35/2020 of CT
As per notification no : 33/2020 late fee not applicable / waived off. That means Taxpayer's can file their GSTR 1 return on or before 30th Jun-2020...