Remove tax (6)
I believe the answer is:
excise
I believe this is a double definition.
'remove' is the first definition.
(I've seen this before)
'tax' is the second definition.
(excise is a kind of tax)
(Other definitions for excise that I've seen before include "Internal tax" , "Tax on certain goods and commodities" , "Type of tax" , "Expunge the tax?" , "A tax to be cut out, perhaps" .)