Change behind counter emptied out, money in the bank (6)
I believe the answer is:
credit
'money in the bank' is the definition.
(I've seen this before)
'change behind counter emptied out' is the wordplay.
'change' becomes 'edit' (edit can mean to change or alter).
'behind' says to put letters next to each other.
'emptied out' suggests removing the centre (the inside letters are emptied out).
'counter' with its centre taken out is 'cr'.
'edit' after 'cr' is 'CREDIT'.
(Other definitions for credit that I've seen before include "Have faith" , "support for one with money problems" , "Money available for a client to borrow" , "Opposite of debit" , "Good reputation; tick" .)