This paper proposes a model to jointly explain two stylized facts observed in the recent empirical literature—the existence of a significant size of wealthy hand-to-mouth consumers and negative marginal propensities to consume associated with housing upgrades. The key ingredients of the model are a realistic set of housing choices, sizable down payment requirements, transaction costs, and endogenous borrowing constraints. Moreover, in the presence of unanticipated income shocks, this richness in marginal propensities to consume has significant implications for aggregate consumption and helps explain the puzzling increase in savings by low net worth households observed during the Great Recession as well as the consumption responses to recent tax rebates.
