Disposable income is the income that a person has available for spending and saving after taxes and other mandatory deductions have been taken out of their gross income. In other words, it is the amount of money that a person has left over to spend or save as they see fit. Disposable income is calculated by subtracting taxes and other mandatory deductions from gross income. Therefore, is the correct answer: disposable income is the income which is available for consumption and savings after taxes and other mandatory deductions have been taken out of gross income.