Service tax on reverse charge

riddhi (student) (746 Points)

02 February 2017  
If we make a separate bill for interior design i.e. mat + service then on mat on how much vat will be charged + do we have to pay service tax at the rate of 15% on the entire service amount. Also if they give a combined bill then on the entire amount do we need to pay service tax @ 15% works contract?