Service Tax - Business Support Service

We are porviding the service to our client for clearance of B.L. and we are doing this work from third party.

Say my company's name is B and i am providing service to A and work done from C.

C charges in his invoice various expenses like ocean frieght, Terminal Handlling Charges, Piracy Risk , Documentation Charges etc.

- C raise invoice to "?" if C raise invoice to A then u have to raise only your charges invoice / debit note, service tax may apply after limit of 10L

- if C raise invoice to "B" then B has to take credit of service tax on invoice of C and then issue invoice to A and service tax payable on this bill gross.

- mere payment by you on behalf of A does not qualify you as receipent of service, but u have to chek carefully the documents eligibility . 

My company is charging a fix amount over invoice of C and issue debit note to A.

My question is, can i issue one debit note for re-imburssement of expense and charge no Service Tax on the same and another debit note for Service charges on which i charge Service Tax or I have to charge Service Tax on the full amount (i.e. Expenses + Service Charges)

We have Registration in Business Support Service.