Financial system made money corruptly importing cobalt (7)
I believe the answer is:
economy
'financial system' is the definition.
(I've seen this before)
'money corruptly importing cobalt' is the wordplay.
'corruptly' indicates an anagram.
'importing' indicates putting letters inside.
'cobalt' becomes 'Co' (Co is the chemical symbol for cobalt).
'money' with letters rearranged gives 'enomy'.
'enomy' going around 'co' is 'ECONOMY'.
'made' is the link.
(Other definitions for economy that I've seen before include "Financial prudence" , "Judicious expenditure of money" , "Using little" , "being frugal" , "A country's system of production, distribution and consumption" .)