Raise tax (4)
I believe the answer is:
levy
I believe this clue is a double definition.
'raise' is the first definition.
('levy' can be a synonym of 'raise')
'tax' is the second definition.
(thesaurus)
(Other definitions for levy that I've seen before include "tax money" , "Moneys raised by fines, taxes" , "Tax raised" , "Money raised from taxes, etc" , "Tax, fee, fine, etc" .)