Very urgent interest calculation of service tax payment

How to calculate interest for late of service tax is interest calculate separately for Service tax, education cess & higher cess since all of these have difference code for interest payment eg.



Service tax 7000.00 code 197

Edu Cess 140.00     Code 298

Higher Cess 700.00 code 426

Please calculate interest on above mentioned eg. if last date of payment is 31 st March 2012







thanks