Graded fiscal side ‘uncertain’ (10)
I believe the answer is:
classified
'graded' is the definition.
(thesaurus)
'fiscal side uncertain' is the wordplay.
'uncertain' indicates an anagram.
'fiscal'+'side'='fiscalside'
'fiscalside' anagrammed gives 'CLASSIFIED'.
(Other definitions for classified that I've seen before include "Ordered" , "to be kept secret" , "Categorised; secret" , "Arranged in categories" .)