We need to impose the charges on the margin we add but we don't want to show the same in invoice to customer and as we have to charge Service Tax/GST on Margin so we can't show the same to customer, Please let us know how can we invoice.

E.g - We buy ticket from airline in Rs. 1000 and add margin 500 so we have to charge Rs. 75 Service Tax which we require to deposit into govt. account, So how can we create invoice without showing margin, I mean we have to charge Rs. 1500 to customer and additional Rs. 75 as Service Tax.

When we try to create the invoice and if charge 1500 in any Item it impose tax on full amount and when we charge additional 500 in separate field it's visible to customer.

Please advise.

Shinu