Pay one new business more or less? (6)
I believe the answer is:
income
'pay' is the definition.
(thesaurus)
'one new business more or less?' is the wordplay.
'one new' becomes 'in' (I've seen this in other clues**).
'business' becomes 'co'.
'less?' suggests deleting specific letters.
'more' with 'or' taken out is 'me'.
'in'+'co'+'me'='INCOME'
(Other definitions for income that I've seen before include "See 12" , "Earned or unearned revenue." , "Returns" , "Coin me! (anag)" , "Money coming in" .)