Gst composition query

Jethmal Singhvi (Chartered Accountant-Practitioner)   (140 Points)

17 July 2017  
Dear All,
I am confused and here for seeking your advice, The composition levy under GST being 1% (0.5 % CGST and 0.5 % SGST) is leviable on only taxable supplies or all supplies whether taxable or non taxable or nil rated or exempted ?
 
Please Suggest me.