Thug doc treated to split costs (2,5)
I believe the answer is:
go dutch
'split costs' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'thug doc treated' is the wordplay.
'treated' is an anagram indicator.
'thug'+'doc'='thugdoc'
'thugdoc' anagrammed gives 'GO DUTCH'.
'to' is the link.
Can you help me to learn more?
(Other definitions for go dutch that I've seen before include "share cost" , "Pay separately" , "Share expenses equally" , "to pay only half" , "Share costs equally" .)