Earn more until cut changes salary (12)
I believe the answer is:
remuneration
'salary' is the definition.
('remuneration' can be a synonym of 'salary')
'earn more until cut changes' is the wordplay.
'cut' means to remove the last letter.
'changes' is an anagram indicator.
'earn'+'more'+'until'='earnmoreuntil'
'earnmoreuntil' with its last letter taken off is 'earnmoreunti'.
'earnmoreunti' with letters rearranged gives 'REMUNERATION'.
(Other definitions for remuneration that I've seen before include "Money paid for work or a service" , "Payment - a minor tenure (anag)" , "Pay - our men earn it (anag)" , "Money as reward" .)