Hi Allen,
If you choose to Create a New Tax Code then Create a New Tax Code from FTXP and Mark 12.5% against the BED Condition Type.
OR
If you intend to use the Existing Tax Code then go to FTXP and Check the Existing Tax Code which has BED+EC+SHEC , Mark the Condition type against the Rates of EC and SHEC and then go to FV12 and maintain the End Date Against the Condition Type for EC and SHEC.
Ideally you should Create New Tax Codes.
Regards
Rakesh Goenka