Attention returned when receiving one's extra money (5)
I believe the answer is:
raise
'extra money' is the definition.
(increase in pay)
'attention returned when receiving one's' is the wordplay.
'attention' becomes 'ear' (having someone's ear is having their attention).
'returned' says the letters should be written in reverse.
'when receiving' means one lot of letters goes inside another.
'one's' becomes 'i's' (Roman numeral).
'ear' back-to-front is 'rae'.
'rae' placed around 'is' is 'RAISE'.
(Other definitions for raise that I've seen before include "Pick up" , "Lift, elevate" , "Call up" , "Produce" , "Inflate" .)