The Registered Taxable Person who opt for composition scheme have to fill he's Return quarterly. GSTR-1 10th of next month of each quarter. GSTR-2 15th of next month of each quarter. GSTR-3 20th og next month of each quarter.
1st Quarter - April to June 2nd Quarter- July to Sep. 3rd Quarter Oct. to Dec. 4th Quarter - Jan. to March
DueDate of GSTR-1 1st Quarter - 10th of July 2nd Quarter 10th Oct. 3rd Quarter- 10th Jan. 4th Quarter - 10th of April