Father needs year to settle bill (3)
I believe the answer is:
pay
'settle bill' is the definition.
'pay' can be an answer for 'settle' (paying is a kind of settling). I'm not sure about the 'bill' bit.
'father needs year' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'needs' says to put letters next to each other.
'year' becomes 'y'.
'pa'+'y'='PAY'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for pay that I've seen before include "Settle up" , "Hand over money for" , "Financial reward" , "Earnings" , "Remunerate" .)