Service tax exemption for practitioner charterd accountant

Dear Memebers,

I want to Know in how many ways a CA can get exemption or evasion from service tax except in the case of agent??? Or how can I create a condition similar to that of an agent????

Lets take a scenario :

I need to receive X Lakh rupees from the Firm on behalf of services(accounting, training, software cost, staff remuneration), I offered to them and it is crossing the limit of taxable service i.e above 10 lks. 

Please suggest What componenets should be covered into the Bill so that chargable amount(On which ST will be applicable) is minimal..