Refuse to get benefit cut (7)
I believe the answer is:
bagasse
'refuse' is the definition.
(I've seen this before)
'get benefit cut' is the wordplay.
I cannot quite see how this works, but
'get' could be 'bag' (bag can mean to secure or obtain) and 'bag' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for bagasse that I've seen before include "extracted from sugar" , "Refuse" , "A biofuel" .)