Seafront has no soft bank (4)
I believe the answer is:
earn
'bank' is the definition.
(to bank a sum can informally mean to earn it)
'seafront has no soft' is the wordplay.
'has no' is a deletion indicator.
'seafront' with 'soft' removed is 'EARN'.
(Other definitions for earn that I've seen before include "Make money" , "long gone" , "Merit through work or endeavour" , "Near (anag.)" , "Acquire through merit" .)