Debit arranged for bathroom fixture (5)
I believe the answer is:
bidet
'bathroom fixture' is the definition.
(I've seen this before)
'debit arranged' is the wordplay.
'arranged' indicates anagramming the letters.
'debit' anagrammed gives 'BIDET'.
'for' is the link.
(Other definitions for bidet that I've seen before include "Bathroom item" , "where privates get soaked" , "Type of basin" , "Bathroom appliance" , "bathroom cleaner" .)