EU never raising government income? (7)
I believe the answer is:
revenue
'government income?' is the definition.
(revenue is a kind of government income)
'eu never raising' is the wordplay.
'raising' says the letters should be written in reverse.
'eu'+'never'='eunever'
'eunever' reversed gives 'REVENUE'.
(Other definitions for revenue that I've seen before include "stream, perhaps" , "Gross business income" , "Return" , "profit" , "Takings" .)