Take in money (4)
I believe the answer is:
note
I believe this clue is a double definition.
'take' is the first definition.
(thesaurus)
'money' is the second definition.
(thesaurus)
'in' is the link.
(Other definitions for note that I've seen before include "Short informal letter" , "Crotchet or minim, perhaps" , "Bill" , "Heed; short letter" , "A, B, C, D, F or G" .)