And we thought that was insufficient, and we came up with a measurement we called "net disposable income," which is, basically: After you pay taxes and your basically essential living expenses, how much money do you have left over for discretionary things or to save?
pero, para nosotros, eso no es suficiente. Establecimos una forma de medición que llamamos "ingreso neto disponible". Es decir, luego de pagar los impuestos  y los gastos básicos para vivir, ¿cuánto dinero queda para gastos discrecionales, o para ahorros?