When housing benefit gets bit of money for youth (10)
I believe the answer is:
adolescent
'youth' is the definition.
(an adolescent is a young person)
'when housing benefit gets bit of money' is the wordplay.
'when' becomes 'as' (eg 'when I walked' means 'as I walked').
'housing' is an insertion indicator.
'benefit' becomes 'dole' (informal term for a state benefits).
'gets' is a charade indicator (letters next to each other).
'bit of money' becomes 'cent'.
'as' going around 'dole' is 'adoles'.
'adoles'+'cent'='ADOLESCENT'
'for' acts as a link.
(Other definitions for adolescent that I've seen before include "Youth" , "Developing" , "juvenile" , "One growing" , "sixth-former, say" .)