The roll out of GST is scheduled from April 1, 2017. The taxes of Central Excise and Service Tax would be subsumed in the GST.
All existing Central Excise and Service Tax assessees will be migrated to GST starting January 7, 2017.
In case the assessee is also registered with State Commercial Tax Dept. (State VAT/Luxury Tax/ Entry Tax/ Entertainment Tax) and has already initiated this process of migration, then no further action is required to be taken in terms of the Guidance Note by such assessee as a Central Excise/Service Tax assessee.
In order to migrate to GST, an assessee needs to have a provisional ID and password. These details can be obtained by logging into ACES portal (www.aces.gov.in)