Vehicle payment brings in zero after tax (9)
I believe the answer is:
wagonette
'vehicle' is the definition.
(I've seen this before)
'payment brings in zero after tax' is the wordplay.
'payment' becomes 'wage' (wage is a kind of payment).
'brings in' indicates putting letters inside.
'zero' becomes 'O' (O resembles 0).
'after tax' becomes 'nett' (I've seen this before).
'o'+'nett'='onett'
'wage' enclosing 'onett' is 'WAGONETTE'.
(Other definitions for wagonette that I've seen before include "horse-drawn vehicle" , "Small vehicle" , "transport" .)