composition scheme

CA OM PRAKASH GUPTA (CA Practice ) (76 Points)

13 September 2018  
Dealer wants to opt out from composition 16.09.2018. Whether ITC on stock as composition
15.09.2018 available? 2nd query is for Sept 18 both GSTR3B and GSTR 4 both is to be filed, will portal allowed the same. What will be the last date for filing of stock statement.