[经] 可遂意(自由)支配的收入

[ noun ]
income (after taxes) that is available to you for saving or spending
<noun.possession>

disposable income \dis*pos"a*ble in"come\, n. (Economics)
that portion of income which is available for spending on
discretionary purchases; for individuals, it is usually
calculated as total income less taxes. National disposable
income, which is the disposable income of all individuals and
businesses, is calculated as total national income minus
taxes plus transfer payments. --Dornbusch and Fischer
(Macroeconomics)
[PJC]