Penalties restricting overseas party funds (8)
I believe the answer is:
finances
'funds' is the definition.
(synonyms)
'penalties restricting overseas party' is the wordplay.
'penalties' becomes 'fines' (fine is a kind of penalty).
'restricting' means one lot of letters goes inside another.
'overseas party' becomes 'anc' (African National Congress, South African party).
'fines' going around 'anc' is 'FINANCES'.
(Other definitions for finances that I've seen before include "Money resources as of country or company" , "Assets in the form of money" , "Furnishes with money" , "Provides the capital" , "funds" .)