Disagreement about another void list of charges (6)
I believe the answer is:
tariff
'list of charges' is the definition.
(list of fees or charges to be paid)
'disagreement about another void' is the wordplay.
'disagreement' becomes 'tiff' (tiff is a kind of disagreement).
'about' is an insertion indicator.
'void' suggests removing the centre (the word is empty or void of its inside letters).
'another' with its centre taken out is 'ar'.
'tiff' placed around 'ar' is 'TARIFF'.
(Other definitions for tariff that I've seen before include "Import duty, tax" , "Export/import duty" , "Duty charge" , "Customs duty" , "Tax or duty on a class of imports" .)