The Choice of Interest Rate Models and Its Effect on Bank Capital Requirement Regulation and Financial Stability
Journal
International journal of economics and finance : IJEF
ISSN
1916-971X
ISSN-Digital
1916-9728
Type
journal article
Date Issued
2018
Author(s)
Abstract
According to the Basel regulation banks may use internal risk models to measure interest rate risk and calculate regulatory capital requirements. Under its pillar II the Basel framework grants leeway to banks in their choice of these models. We therefore focus on how well interest rate models describe real interest rate movements empirically and which impact the model choice has on the economic value of bank equity during the financial crisis. Furthermore, we address the question how different choices of interest rate models affect the overall financial stability. To this end we estimate eight different interest rate models for three different currencies (USD, EUR, CHF) using the Generalized Method of Moments (GMM). Then we approximate the balance sheet of a typical Swiss bank during the financial crisis and run Monte Carlo simulations of the balance sheet using the estimated interest rate models. Our results show that the required economic value of equity for a bank varies considerably with the different choices of interest rate models. However, the interest rate models which are empirically best fitting do not imply aggregate financial stability. Thus, banks´ choices of interest rate models to calculate regulatory capital requirements may have a crucial impact on overall financial stability.
Language
English
Keywords
banks
government policy and regulation
interest rates
determination
term structure and effects
HSG Classification
contribution to scientific community
HSG Profile Area
SEPS - Quantitative Economic Methods
Refereed
Yes
Publisher
CCSE
Publisher place
Toronto
Volume
10
Number
1
Start page
74
End page
92
Pages
19
Division(s)
Contact Email Address
klaus.spremann@unisg.ch
Eprints ID
252859
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