Cut tax (6)
I believe the answer is:
excise
I believe this is a double definition.
'cut' is the first definition.
(I've seen this in other clues)
'tax' is the second definition.
(excise is a kind of tax)
(Other definitions for excise that I've seen before include "Duty; cut out" , "Expunge the tax?" , "A tax to be cut out, perhaps" , "Cut out; commodity tax" , "Internal tax" .)