Rejection of a bank arrangement primarily means independent paper folding (7)
I believe the answer is:
origami
'paper folding' is the definition.
(I've seen this before)
'rejection of a bank arrangement primarily means independent' is the wordplay.
'rejection of' is a reversal indicator.
'bank arrangement' becomes 'giro' (type of credit transfer).
'primarily' suggests taking the first letters.
The initial letters of 'means independent' is 'mi'.
'a'+'giro'='agiro'
'agiro' in reverse letter order is 'origa'.
'origa'+'mi'='ORIGAMI'
(Other definitions for origami that I've seen before include "Japanese art of folding paper into decorative shapes" , "Japanese craft of paper folding" , "work from folder" , "Paperwork, as it were" , "folding stuff?" .)