Trace where takings go in accounts subject to turnover (9)
I believe the answer is:
scintilla
'trace' is the definition.
(both can mean a small amount)
'where takings go in accounts subject to turnover' is the wordplay.
'where takings go' becomes 'in till' (a shop's takings go in the till).
'in' indicates putting letters inside.
'accounts' becomes 'acs' (ac is short for account).
'subject to turnover' is a reversal indicator (letters get turned over).
'acs' in reverse letter order is 'sca'.
'intill' put into 'sca' is 'SCINTILLA'.
(Other definitions for scintilla that I've seen before include "little bit" , "Slight amount" , "Minute spark" , "Tiniest bit" , "A spark; a trace" .)