可支配所得是经济名词，英文为「Disposable Income」，简称「DI」，其概念为「实际收到的所得」（net pay）。实务上是由总所得扣除直接税而得。

与"Disposable Income"类似易混淆的概念为"Discretionary Income"，目前无适当中文翻译。Discretionary Income为可支配所得(DI)扣除日常生活中的固定支出，例如房租、贷款、保费等，也就是扣除不得不支出的费用后的所得净额。可视为更严格的可支配所得。

以台湾行政院主计处所编制的可支配所得数据为例，其定义如下：

Disposable income is total personal income minus personal current taxes. In national accounts definitions, personal income minus personal current taxes equals disposable personal income. Subtracting personal outlays (which includes the major category of personal [or private] consumption expenditure) yields personal (or, private) savings, hence the income left after paying away all the taxes is referred to as disposable income.