Cat, good, taken into bank (5)
I believe the answer is:
tiger
'cat' is the definition.
(tiger is a kind of cat)
'good taken into bank' is the wordplay.
'good' becomes 'g' (abbreviation).
'taken into' is an insertion indicator.
'bank' becomes 'tier' (both can mean a row of similar things).
'g' put within 'tier' is 'TIGER'.
(Other definitions for tiger that I've seen before include "Big cat of Asia" , "Formidable competitor" , "Predator" , "- - Woods (golf)" , "Fierce feline" .)