As perSection 2(d) read with Section 2(f) of the central Excise Act,1944, Customised software is an excisable goods and covered under 'Information Technology Software' under chapter heding 85248000, though the duty involved has been exempted vide Notification no 6/2006 CE as amended vide Notification No.6/2008 C.E..
Simultaneously, service tax has also been levied on the Development of Information Technology Software.
An assessee develops customised software and sells it to specific customers after payment of Service Tax. The assessee is registered service provider of 'Management, Maintenance and Repairs' Service. He also pays service tax on Annual Maintenance Contracts of the softwares sold by him.
In which case, excise duty will be paid on the software, had it not been exempted, and in which case will it attract Service Tax.