Established; paid in full (7)
I believe the answer is:
settled
This clue is a double definition.
'established' is the first definition.
(similar in meaning)
'paid in full' is the second definition.
(thesaurus)
(Other definitions for settled that I've seen before include "Established" , "Resolved (an argument)" , "Agreed; sorted" , "Came down; resolved" , "Resolved; calm" .)