FORMSPurpose of fillingPeriod of FillingDue Date
GSTR-1Details of outward
Supplies of
goods or services 		Monthly 11th of the next month with effect from October 2018
GSTR-3BSimple Return in which
summary
of outward supplies
along with Input Tax
Credit is declared 
and payment of tax is
affected by taxpayer 		Monthly / Quarterly20th of the next  month
GSTR-5 Returns for non resident Monthly20th of the next  month
GSTR-6 Return of input services
distributor 		Monthly13th of the next  month
GSTR-7 Return for TDS Monthly10th of the next  month
GSTR-8 Details of supplies effected
through e-commerce
operator and the amount
of tax collected 		Monthly10th of the next  month
GSTR-9 Annual Return Monthly 31st Dec
GSTR-9A Annual return for person opting composition scheme Monthly 31st Dec
GSTR-10 Final Return GST Registration is cancelled or surrendered Within three months of the date of cancellation or date of cancellation order, whichever is later
GST-11 Details of inward supplies to be furnished by a person having UIN and claiming a refund Monthly28th of the month following the month for which statement is filed