discretionary income

discretionary income (countable and uncountable, plural discretionary incomes)

1. (economics) Disposable income minus all payments necessary to meet current bills.

• “discretionary income”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “discretionary income”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “discretionary income” (US) / “discretionary income” (UK) in Macmillan English Dictionary.