Composition scheme and Collect Tax

No,under  Composition scheme you can not  collect  Tax  ,instead  you have to issue Bill  of  supply  and  as  per  Notification 2/2019  dt 7/3/2019  your  aggregate  turnover should  50 lacs or less in the preceding  financial   year  for service provider  to opt  composition scheme . 

Its  3%  CGST  & 3%  CGST  =  Total  6%   , you can  not  provide  Inter-sate service 

Yes ,some  misunderstanding  my No  in my first  reply  is for collecting Tax  , you please refer  Notification 2/2019  dt  7/3/2019  on CBIC web site and fulfill all conditions  for  registration .