Scheme to get money into the kitty (4)
I believe the answer is:
plot
'scheme' is the definition.
(I know that plot is a type of scheme)
'money into the kitty' is the wordplay.
'money' becomes 'l' (L can mean 'pounds').
'into' is an insertion indicator.
'the kitty' becomes 'pot' (both can mean a shared fund).
'l' put into 'pot' is 'PLOT'.
'to get' is the link.
(Other definitions for plot that I've seen before include "cook up" , "Secret plan; graph" , "A scheme, or a parcel of land" , "Connive" , "... of story, family ..." .)