Credit given on getting bill of exchange (9)
I believe the answer is:
overdraft
'credit' is the definition.
(overdraft credit is a kind of credit)
'on getting bill of exchange' is the wordplay.
'on' becomes 'over' (I've seen this before**).
'getting' is a charade indicator (letters next to each other).
'bill of exchange' becomes 'draft' ('draft' can be a synonym of 'bill of exchange').
'over'+'draft'='OVERDRAFT'
'given' is the link.
(Other definitions for overdraft that I've seen before include "Bank facility to go into the red" , "money that must be repaid" , "Debit balance in bank account" , "Bank's debt facility" , "Sum overdrawn" .)