VAT is dodgy: that's one view (5)
I believe the answer is:
vista
'one view' is the definition.
(synonyms)
'vat is dodgy' is the wordplay.
'dodgy' indicates anagramming the letters (a dodgy or wrong order of the letters).
'vat'+'is'='vatis'
'vatis' with letters rearranged gives 'VISTA'.
'that's' is the link.
(Other definitions for vista that I've seen before include "Prospect, view" , "Pleasant view" , "Distant view" , "View (with avenue)" , "Perspective" .)