Planned edict if there's a shortfall (7)
I believe the answer is:
deficit
'a shortfall' is the definition.
('deficit' can be a synonym of 'shortfall')
'planned edict if' is the wordplay.
'planned' indicates an anagram (I've seen this in other clues).
'edict'+'if'='edictif'
'edictif' is an anagram of 'DEFICIT'.
'there's' is the link.
(Other definitions for deficit that I've seen before include "There's something lacking" , "Amount of which total falls short" , "Excess of liabilities over assets" , "Arrears" , "Shortfall in revenue" .)