List of charges, the result of squabble about artist turning up (6)
I believe the answer is:
'list of charges' is the definition.
(I've seen this before)
'squabble about artist turning up' is the wordplay.
'squabble' becomes 'tiff' (synonyms).
'about' indicates putting letters inside.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'turning up' says the letters should be written in reverse.
'ra' in reverse letter order is 'ar'.
'tiff' placed around 'ar' is 'TARIFF'.
'the result of' is the link.
(Other definitions for tariff that I've seen before include "Import or export duty" , "Customs duty" , "Import/export tax" , "List of customs duties" , "Import duty, tax" .)