Lament getting cash out to pay (9)
I believe the answer is:
discharge
'pay' is the definition.
(I've seen this before)
'lament getting cash out' is the wordplay.
'lament' becomes 'dirge' (synonyms).
'getting' means one lot of letters goes inside another.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'cash' with letters rearranged gives 'scha'.
'dirge' enclosing 'scha' is 'DISCHARGE'.
'to' is the link.
(Other definitions for discharge that I've seen before include "cashier" , "Performance" , "Put out" , "unload" , "Fire (a gun); release from custody" .)