Taxes one with millions and more than one job (7)
I believe the answer is:
imposts
'taxes' is the definition.
(impost can mean a tax)
'one with millions and more than one job' is the wordplay.
'one' becomes 'i' (Roman numeral).
'with' is a charade indicator (letters next to each other).
'millions' becomes 'm' (abbreviation).
'and' is a charade indicator (letters next to each other).
'more than one job' becomes 'posts' (post can mean a job or role).
'i'+'m'+'posts'='IMPOSTS'
(Other definitions for imposts that I've seen before include "taxes" , "customs duties" .)