Rise when supported by money (6)
I believe the answer is:
ascent
'rise' is the definition.
('ascent' can be a synonym of 'rise')
'when supported by money' is the wordplay.
'when' becomes 'as'.
'supported by' says to put letters next to each other (letters go below - in down clue).
'money' becomes 'cent' (I've seen this before).
'as'+'cent'='ASCENT'
(Other definitions for ascent that I've seen before include "Enacts in climb" , "An up-slope" , "Uphill journey" , "Upward climb" , "The climbing of a peak" .)