Centre of administration makes money (7)
I believe the answer is:
capital
'centre' is the definition.
(I know that capital is a type of centre)
'administration makes money' is the wordplay.
'administration makes' becomes 'capita' (I can't explain this - if you can you should believe this answer much more).
'money' becomes 'l' (L can mean 'pounds').
'capita'+'l'='CAPITAL'
'of' is the link.
Can you help me to learn more?
(Other definitions for capital that I've seen before include "Finances" , "Block" , "Excellent - assets - first city" , "It's excellent in the big city" , "Finance - excellent!" .)