marginal propensity to consume A ratio that compares extra disposable income to a change in spending. Related Related Articles: Glossary: consumption scheduleHow Do You Spend a Stimulus Check?The Ups and Downs of Gas PricesSurprising Hand-To-Mouth HouseholdsWhat You Might Not Know About Debt Ann Mills Share This Previous ArticleM1 Next Articleopen market operations December 17, 2020