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The heterogeneity of interest-induced MPC: Evidence from mortgage borrowers

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  • Song, Sang-yoon

Abstract

Using comprehensive credit bureau data of South Korea, this paper explores the heterogeneous interest-induced Marginal Propensity to Consume (MPC) for mortgage borrowers by their liquidity, credit accessibility, and debt burden. The main findings are as follows. First, the negative relationship between interest payments and consumption comes from borrowers with Adjustable-Rate Mortgages (ARMs). Second, among mortgagors with ARMs, those with low liquidity and credit accessibility show a high interest-induced MPC. Third, the mortgagors with high debt burdens show relatively low interest-induced MPC due to active deleveraging behavior. Fourth, while unconstrained borrowers consistently show low and insignificant MPC, constrained borrowers (those with low liquidity, credit accessibility) maintain long-lasting high MPCs for eight quarters after interest reduction. These results imply that the magnitude and persistence of consumption effect of interest payment reduction depend largely on financial characteristics of mortgage borrowers.

Suggested Citation

  • Song, Sang-yoon, 2022. "The heterogeneity of interest-induced MPC: Evidence from mortgage borrowers," International Review of Economics & Finance, Elsevier, vol. 80(C), pages 402-417.
    • Handle: RePEc:eee:reveco:v:80:y:2022:i:c:p:402-417
    DOI: 10.1016/j.iref.2022.02.048
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    More about this item

    Keywords

    Consumption; Adjustable rate mortgage; Liquidity constraint; Credit accessibility; Debt burden; Monetary policy;
    All these keywords.

    JEL classification:

    • D14 - Microeconomics - - Household Behavior - - - Household Saving; Personal Finance
    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy

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