Wrought iron's imported tax-free for pioneer (9)
I believe the answer is:
innovator
'pioneer' is the definition.
(synonyms)
I cannot understand how the rest of the clue works.
(Other definitions for innovator that I've seen before include "Person who devises a new way of doing things" , "Fresh thinker" , "new ideas man" , "Maker of change" , "Pioneer" .)