Carry forward a loan (7)
I believe the answer is:
advance
This clue is a triple definition!
'carry' is the first definition.
(I know that carry is a more specific form of the action advance)
'forward' is the second definition.
(thesaurus)
'a loan' is the third definition.
(I've seen this in another clue)
(Other definitions for advance that I've seen before include "borrowed money" , "Go ahead - forward - loan" , "Make headway" , "Proceed" , "Suggest" .)