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Journal of Finance Vol. 70 No. 4 2015

A Model of Mortgage Default

John Y. Campbell1,2; João F. Cocco3,4,5

1 National Bureau of Economic Research · 2 Harvard University · 3 Conference Board · 4 Centre for Economic Policy Research · 5 London Business School

open access

Abstract

In this paper, we solve a dynamic model of households' mortgage decisions incorporating labor income, house price, inflation, and interest rate risk. Using a zero‐profit condition for mortgage lenders, we solve for equilibrium mortgage rates given borrower characteristics and optimal decisions. The model quantifies the effects of adjustable versus fixed mortgage rates, loan‐to‐value ratios, and mortgage affordability measures on mortgage premia and default. Mortgage selection by heterogeneous borrowers helps explain the higher default rates on adjustable‐rate mortgages during the recent U.S. housing downturn, and the variation in mortgage premia with the level of interest rates.

DOI
10.1111/jofi.12252
Volume
70
Issue
4
Pages
1495-1554
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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