Macroeconomic implications of mortgage loan requirements: an agent-based approach

Bulent Ozel (), Reynold Christian Nathanael (), Marco Raberto, Andrea Teglio and Silvano Cincotti ()
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Bulent Ozel: Universitat Jaume I
Reynold Christian Nathanael: DIME-CINEF, Università di Genova
Silvano Cincotti: DIME-CINEF, Università di Genova

Journal of Economic Interaction and Coordination, 2019, vol. 14, issue 1, No 2, 7-46

Abstract: Abstract It is a well-known fact that the housing market, with its associated mortgage securities, plays a crucial role in modern economies. The recent crisis of 2007, triggered by the U.S. real estate bubble, confirms this key role and suggests the importance of regulating mortgage lending. This paper investigates these issues by designing a housing market with a linked mortgage lending instrument in the Eurace agent-based model. Our results show that the presence of a housing market in the model has relevant macroeconomic implications, driven mainly by the additional amount of endogenous money injected into the economy by new mortgages. This additional money generally helps to support and stabilize aggregated demand, thus improving the main economic indicators. However, if the regulation of mortgage lending is too lax, involving an increase in the debt-service-to-income ratio (DSTI), then the additional supply of mortgages no longer enhances macroeconomic performance, and the stability of the economic system is undermined. Based on a number of recent discussions, a regulation of stock control that targets households’ net wealth (a stock), rather than income (a flow) is designed and analyzed. The results show that regulation of stock control can be combined effectively with DSTI to increase the stability of the housing market and the economy as a whole. Interestingly, the regulation based on stock control also directly affects mortgage distribution among households, avoiding excessive concentration. From a policy perspective, our results suggest that the use of a mild flow control regulation, coupled with a stricter stock control measure, fosters sustainable growth and eases first-time buyers access to the housing market, encouraging homeownership.

JEL-codes: C63 E32 E51 G21 (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (16)

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Working Paper: Macroeconomic implications of mortgage loans requirements: An agent based approach (2016)
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DOI: 10.1007/s11403-019-00238-5

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