Ends financial penalties (5)
I believe the answer is:
fines
'penalties' is the definition.
(fine is a kind of penalty)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for fines that I've seen before include "Penalty payments" , "Cash penalties" , "Monetary penalties" , "Penalty charges" , "Penalties of money" .)