Go for higher denomination cash in recession (3,2)
I believe the answer is:
set on
'go for' is the definition.
(both can mean to attack)
'higher denomination cash in recession' is the wordplay.
'higher denomination cash' becomes 'notes' (banknotes are in higher denominations than coins).
'in recession' is a reversal indicator.
'notes' in reverse letter order is 'SET ON'.
(Other definitions for set on that I've seen before include "Attack" , "Go" , "Determined" .)