Taxi rate changed for show (7)
I believe the answer is:
cabaret
'for show' is the definition.
(cabaret is a kind of show)
'taxi rate changed' is the wordplay.
'taxi' becomes 'cab' (synonyms).
'changed' is an anagram indicator.
'rate' anagrammed gives 'aret'.
'cab'+'aret'='CABARET'
(Other definitions for cabaret that I've seen before include "Floor show for Arab etc" , "Nightclub 12ac" , "Entertainment at restaurant" , "Bob Fosse musical with Liza Minnelli" , "Floor-show as in nightclub" .)