<h1>Service tax registration documents required for local or centralized registration; branch address proof needed and limited resubmission for amendments.</h1> Service tax registration requires identity and premises documentation: a copy of the assessee's PAN and proof of address for the premises (telephone or electricity bill, rent agreement, or government-issued address document). Partnership firms must supply a partnership deed and companies their Memorandum of Association. Centralized registration requires the same documents plus proof of address for each branch to be included. For amendments, existing documents need not be resubmitted for service additions or deletions, but proof of address must be submitted when a new premises or branch is added.