可支配收入是要减去房子相关的收入的,请注意两个重要的术语:收入 和 可支配收入 也就是 disposable income and income
Take your disposable income, which is the amount of money after taxes left, for example, in your paycheck. Subtract all of your necessities like paying for rent or housing, student loans, utilities, and food, and whatever is left over to spend, save, or invest is your discretionary income.
Source: What Is Discretionary Income? How to Calculate, With Example.