A number of services are in the ambit for payment of service tax and one such service comes under its ambit is banking services where you get charged service tax in case they does any charges deduction or applies any penalty charges. The rate of service tax is as following:
The items of service charges in your Statement of Accounts are inclusive of Service Tax @ 12% and Education Cess @2% and Higher Secondary education cess @ 1% on Service Tax. The effective rate of tax is 12.36% and is applied on all service charges levied by the bank for Services rendered.
Thus it is important that you make sure that you do not get charged by banks say for minimum quarterly balance non maintenance as at the end of day, you also pay the service tax on that penalty.