How much of a debtor’s income must be paid to the chapter 13 trustee under a chapter 13 plan?

Usually all of the disposable income of the debtor and the debtor’s spouse for a three-year period must be paid to the chapter 13 trustee. Disposable income is income received by the debtor and his or her spouse that is not reasonably necessary for the support of the debtor and the debtor’s dependents.