Allowed income? (8)
I believe the answer is:
admitted
I believe this clue is a double definition.
'allowed' is the first definition.
(admitting is a kind of allowing)
'income?' is the second definition.
(I've seen this before)
(Other definitions for admitted that I've seen before include "Allowed to enter or owned up" , "Confessed; let in" , "taken into hospital" , "being given access" , "Conceded; let in" .)