Service tax calculation

Anand (Accountant) (60 Points)

10 July 2008  

Dear Sir & frinds,

i have one doubt in service tax calcultaion, we billed 1000+123.6=1123.6 in case we received 700/- part payment how should i treat this one and it is after deduction of TDS 10.3% and any formula is there please tell me