Bond keeps me in the money (6)
I believe the answer is:
cement
'bond' is the definition.
(cement can mean to stick or bond)
'me in the money' is the wordplay.
'in the' is an insertion indicator.
'money' becomes 'cent' (eg denomination of dollars).
'me' put into 'cent' is 'CEMENT'.
'keeps' is the link.
(Other definitions for cement that I've seen before include "Union" , "Bind (friendship)" , "Binding substance as for bricks" , "Mortar; strengthen" , "Building material to bind things" .)