GSTR 3B is a simple return that businesses need to file in the first two months of GST (July and August, 2017). The government has postponed the filing of GSTR 1, 2 & 3 for July and August, 2017 in order to give businesses some time to adjust to GST.
GSTR-3B for July 2017 to be filed on or before 20th August 2017 and for August 2017 to be filed on or before 20th September 2017.
GSTR-1 for July 2017 to be filed between 1st-5th September 2017 and for August 2017 to be filed between 16th-20th September 2017.
GSTR-2 for July 2017 to be filed between 6st-10th September 2017 and for August 2017 to be filed between 21st -25th September 2017.
GSTR-3 for July 2017 to be filed between 11st-15th September 2017 and for August 2017 to be filed between 26th-30th September 2017.