1. Education Cess leveied by Finance Act (No.2), 2004.
2. In case you did not collect service tax then u need to gross up the amount considering it as amount received is inclusive of service tax amount:
suppose u r raising bill of Rs.112.36/- (inclusive of Service Tax @ 12% + EC @ 2% + SHEC @ 1%). Now client is paying u only Rs.90/-, then consider this as inclusive amount. bifurcate dis amount as Rs.80.10/- for service fees and Rs.9.90/- towards service tax liability.
3. though ur 3 quest not so cleared, I understood dat u want to make service tax planning and want to know threshold limits under each instances:
there is no such criteria defined under service tax as given under income tax law. however there is an exemption from paying and recovering tax upto Rs.10 lakhs service fees, once it exceeds u need to pay tax as it is. further when ur sevice fees crosses rs.9 lakhs or ur input service dist. then compulsorily u need to get registerd ur self with the authority. However if it does not exceeds this limit then reg. is optional.
No other criteria defined for the term "person"