Financial arrangement tied up, so it's said (5)
I believe the answer is:
trust
'financial arrangement' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'tied up so it's said' is the wordplay.
'tied up' becomes 'trussed' ('truss' can be a synonym of 'tie up').
'so it's said' indicates a 'sounds like' (homophone) clue.
'trussed' is a homophone of 'TRUST'.
Can you help me to learn more?
(Other definitions for trust that I've seen before include "Firm belief (in another)" , "Pin one's faith on" , "'Put your . . . . . In God, and keep your powder dry'" , "Faith; care" , "Put one's faith in" .)