Cheer when money added to contract … (6)
I believe the answer is:
please
'cheer' is the definition.
(thesaurus)
'money added to contract' is the wordplay.
'money' becomes 'p'.
'added to' is a charade indicator (letters next to each other).
'contract' becomes 'lease' (lease is a kind of contract).
'p'+'lease'='PLEASE'
'when' acts as a link.
(Other definitions for please that I've seen before include "Cause (someone) to feel satisfied" , "Asleep (anag)" , "if you don't mind" , "Gratify as by a sleep" , "cheer up" .)