29 June 2013
service tax is chargable only after taxable services crosses 10lacs limit and it do not have connection with registration.
hence when there is no sales, question of service tax doesn't arise. you may issue invoice. but once your limit of 10 lac will be crossed you have to charge service tax on further invoices.
NOTE: RETURNS OF SERVICE TAX TO BE FILED ON RESPECTIVE DUE DATES WHETHER THERE IS SALE OR NOT, ONCE YOU HAVE TAKEN THE REGISTRATION, OTHERWISE THERE COULD BE PENALTY.
01 July 2013
If you have cross the exemption limit one time then you should pay the duty from day one in another financial year. department can demand the duty.