Money fine can upset (7)
I believe the answer is:
finance
'money' is the definition.
(finance is the management of money)
'fine can upset' is the wordplay.
'upset' indicates an anagram.
'fine'+'can'='finecan'
'finecan' with letters rearranged gives 'FINANCE'.
(Other definitions for finance that I've seen before include "Monetary support" , "Provide funds for" , "Money affairs" , "Money matters" , "See 9" .)