What should be the service tax rate?

The ST charges is correct.  But you show the 10%, 2%, and 1% amount seperately in invoice. 

The Billing is Right, You Have to check the service tax is applicable or not ? for the Services your company is provided.

i think you are some advertiser and have placed the order of customer with the newspaper company, so the amount paid by you to newspaper company should not be chargeable ? BEcause you collected 150000 from client company and paid some 130000 to newspaper company for ad releasing  only stax on designing charges should be levied. Someone please correct and explain me if i am wrong.

Mr. Ravishankar is rightly said because in advertising company, service tax is leviable only on net value.