assessment
assessment on income

bracket
the upper income bracket

DINK
Double Income No Kids

disposable
disposable income

enjoy
to enjoy good income

FIT
federal income tax

graduated
graduated income tax

gross
gross income

income
income tax

liable
liable to income tax

live on
to live on one's income

mixed
mixed income

net
net income

outrun
...outrun one's income / to outrun the constable

private
private income / private means

proportion
...to one's income

rate
rate of the income tax

return
to return one's income at £8,000

run into
her income runs into thousands

shrink
his income has shrunk

small
small income

snug
snug income

supplement
suplemento

sure
to be sure of one's income

tax
to tax income

unearned
unearned income

within
to live within one's income