Residual income has two real definitions. Let’s look at those first. Residual Income is income that continues to be generated after the initial effort has been expended. Compare this to what most people focus on earning: linear income, which is “one-shot” compensation or payment in the form of a fee, wage, commission or salary. The other definition for residual income is not actually a type of income, but rather a calculation that determines how much discretionary money an individual has available to spend after most monthly bills are paid. We believe that income that exceeds your expenses is called PROFIT! So, we are going to use the first definition for the sake of this document.
Residual income is the amount of net income generated in excess of the minimum rate of return. Residual income concepts have been used in a number of contexts, including as a measurement of internal corporate performance whereby a company's management team evaluates the return generated relative to the company's minimum required return. Alternatively, in personal finance, residual income is the level of income that an individual has after the deduction of all personal debts and expenses have been paid.