Lament taking cash out to pay (9)
I believe the answer is:
discharge
'pay' is the definition.
(I've seen this before)
'lament taking cash out' is the wordplay.
'lament' becomes 'dirge' (synonyms).
'taking' indicates putting letters inside.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'cash' is an anagram of 'scha'.
'dirge' enclosing 'scha' is 'DISCHARGE'.
'to' acts as a link.
(Other definitions for discharge that I've seen before include "cashier" , "empty" , "meet" , "pay" , "Fire (gun); sack (worker)" .)