Fortune trader keeps after taxes (3)

I believe the answer is:

net

'after taxes' is the definition.
(as in net profits)

'fortune trader keeps' is the wordplay.
'keeps' indicates the answer is hidden within the clue.
'NET' can be found hidden inside 'fortune trader'.

(Other definitions for net that I've seen before include "device to divide the court" , "Open weave fabric" , "Open-mesh fabric" , "Make" , "difficulty" .)

I've seen this clue in The Sun and The Times.

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