discretionary incomein a sentence
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Her fixed expenses are so high, that despite a high salary, she has very little discretionary income.
discretionary income = income not required for mandatory and necessary expenses
- I am prepared now to reveal that there are two secrets to winning giant stuffed animals: long arms and a small amount of discretionary income.† (source)
- Being a single man with a rather large supply of discretionary income, and having had the opportunity to provide certain legal services to Mr. and Mrs. Gus Barlowe in the past, Charles B. Dunwoody III, Esq. saw no harm in occasionally availing himself of the pleasures of the Mouse's Tail Gentlemen's Club.† (source)