Bank management of the net interest margin: new measures

We decompose the change in banks’ net interest margin into a change in market-wide bank rates and a change in balance-sheet composition. The usefulness of this decomposition is illustrated for a detailed data set of German bank balance sheets, broken down into different maturities, creditors and borrowers, and degrees of liquidity. Our main findings are as follows. (1) Changes in market-wide bank rates have a much higher explanatory power for net interest margins than changes in balance-sheet composition. (2) On average, banks employ interest rate derivatives to hedge on-balance risk since changes in market-wide rates affect the net interest margin less strongly for derivatives users than for non-users. (3) When risk taking becomes more lucrative, derivatives users tend to increase their on-balance exposure more than do non-users.     

The relationship between net interest margin and noninterest income using a system estimation approach

This paper examines the determinants of bank net interest margin (NIM) and non-traditional banking activities (NII). A system estimation approach is employed to control for the simultaneity between NIM and NII for commercial banks in a group of 28 financially liberalized countries during the period between 1997 and 2004. We find a statistically significant negative relationship between NIM and NII for the period between 1997 and 2002. A generally positive but statistically insignificant association between NIM and NII is found for the subsequent period (2003–2004). Banks’ increasing involvement in non-traditional activities is negatively correlated with risk-adjusted profitability measures in the former subperiod, suggesting no obvious diversification benefits. However, the share of noninterest income is positively related to the return on assets (ROA) and the return on equity (ROE) for the latter subsample.     

The determinants of net interest income in the Mexican banking system: An integrated model

This paper analyzes net interest income in the Mexican banking system over the period 1993–2005. Taking as reference the seminal work by Ho and Saunders [Ho, T., Saunders, A., 1981. The determinants of banks interest margins: theory and empirical evidence. Journal of Financial and Quantitative Analysis XVI (4), 581–600] and subsequent extensions by other authors, our study models the net interest margin simultaneously including operating costs and diversification and specialization as determinants of the margin. The results referring to the Mexican case show that its high margins can be explained mainly by average operating costs and by market power. Although non-interest income has increased in recent years, its economic impact is low.     

The economic determinants of interest rate option smiles

We address three questions relating to the interest rate options market: What is the shape of the smile? What are the economic determinants of the shape of the smile? Do these determinants have predictive power for the future shape of the smile and vice versa? We investigate these issues using daily bid and ask prices of euro (€) interest rate caps/floors. We find a clear smile pattern in interest rate options. The shape of the smile varies over time and is affected in a dynamic manner by yield curve variables and the future uncertainty in the interest rate markets; it also has information about future aggregate default risk. Our findings are useful for the pricing, hedging and risk management of these derivatives.     

The determinants of high‐interest entrusted loans in China

We examine the determinants of high‐interest entrusted loans in China from the perspective of corporate risk‐taking. The results of a baseline model illustrate that the propensity to offer high‐interest entrusted loans increases with loose monetary policies, corporate cash holdings and firm age, and it decreases with firm size and growth opportunity. These findings support the claim that firms offer high‐interest entrusted loans mainly for short‐term profits. Other determining factors include CEO behavior traits, market imperfections and the intensity of corporate governance. Specifically, market imperfections create an opportunity for risk‐taking while CEO behavior and the intensity of corporate governance affect a firm's tendency to take risk and engage in high‐interest entrusted loans.     

The determinants of bank interest rate margins: an international study

This paper studies the determinants of bank net interest margins (NIMs) in six selected European countries and the US during the period 1988–1995 for a sample of 614 banks. We apply the Ho and Saunders model (Ho, T., Saunders, A., 1981. The determinants of bank interest margins: theory and empirical evidence. Journal of Financial and Quantitative Analyses 16, 581–600) to a multicountry setting and decompose bank margins into a regulatory component, a market structure component and a risk premium component. The regulatory components in the form of interest-rate restrictions on deposits, reserve requirements and capital-to-asset ratios have a significant impact on banks NIMs. The empirical results suggest an important policy trade-off between assuring bank solvency—high capital-to-asset ratios—and lowering the cost of financial services to consumers—low NIMs. The more segmented or restricted the banking system—both geographically and by activity—the larger appears to be the monopoly power of existing banks, and the higher their spreads. Macro interest-rate volatility was found to have a significant impact on bank NIMs; this suggests that macro policies consistent with reduced interest-rate volatility could have a positive effect in reducing bank margins.     

On the determinants of bank interest margins under credit and interest rate risks

This paper explores the determinants of optimal bank interest margins based on a simple firm-theoretical model under multiple sources of uncertainty and risk aversion. The model demonstrates how cost, regulation, credit risk and interest rate risk conditions jointly determine the optimal bank interest margin decision. We find that the bank interest margin is positively related to the bank's market power, to the operating costs, to the degree of credit risk, and to the degree of interest rate risk. An increase in the bank's equity capital has a negative effect on the spread when the bank faces little interest rate risk. The effect of rising interbank market rate on the spread is ambiguous and depends on the net position of the bank in the interbank market. Our findings provide alternative explanations for the empirical evidence concerning bank spread behavior.     

The Basel III Net Stable Funding Ratio and bank net interest margins

The Net Stable Funding Ratio (NSFR) is a new Basel III liquidity requirement designed to limit funding risk arising from maturity mismatches between bank assets and liabilities. This study explains the NSFR and estimates this ratio for banks in 15 countries. Banks below the ratio need to increase stable sources of funding and to reduce assets requiring funding. The most cost-effective strategies to meet the NSFR are to increase holdings of higher-rated securities and to extend the maturity of wholesale funding. These changes reduce net interest margins by 70–88 basis points on average, or around 40% of their year-end 2009 values. Universal banks with diversified funding sources and high trading assets are penalized most by the NSFR.     

Banks' interest rate risk: the net interest income perspective versus the market value perspective

We use portfolios of passive investment strategies to replicate the interest risk of banks' banking books. The following empirical statements are derived. (i) Changes in banks' market value and in their net interest income are highly correlated, irrespective of the banks' portfolio composition. (ii) However, banks' portfolio composition has a huge impact on the ratio of changes in net interest income relative to changes in market value. These results are important for the design and interpretation of interest rate stress tests for banks.     

On the value and determinants of the interest tax shields

We use a dynamic model of the firm to ascertain both the value and the determinants of the debt tax shields. For a representative U.S. firm, we find that the value of the interest tax shields represents less than 5 % of firm value, and it varies considerably across U.S. industries. Our results also show that this component of firm value behaves counter-cyclically over the business cycle. Finally, besides the interest rate on debt and the corporate income tax rate, we find that the curvature of the production function is one of the main determinants of the tax advantage of debt.     

Financial dollarization: Short-run determinants in transition economies

This paper examines the determinants of financial dollarization in transition economies from a short-run perspective. Using aggregate monthly data of deposit and loan dollarization we study the drivers of short-term fluctuations in dollarization and test their importance at different levels of dollarization. The results provide evidence that (a) the positive (negative) short-run effects of depreciation (monetary expansion) on deposit dollarization are exacerbated in high-dollarization countries; (b) short-run loan dollarization is mainly driven by banks matching of domestic loans and deposits, currency matching of assets and liabilities, international financial integration, and institutional quality; and (c) both types of short-run dollarization are affected by interest rate differentials and deviations from desired dollarization.     

The determinants of interest margins and their effect on bank diversification: Evidence from Asian banks

An endogenous switching regression model is employed for this study, categorizing the banks into regimes of high and low degrees of diversification, with our results indicating that net interest margins can be less sensitive to fluctuations in bank risk factors for functionally diversified banks as compared to more specialized banks. In turn, this implies that by diversifying their income sources, these banks can reduce the shocks to net interest margins arising from idiosyncratic risk. Our results show that prior findings can hold when the banks are located in a regime with a low degree of diversification.     

Factors explaining the interest margin in the banking sectors of the European Union

This study analyses the interest margin in the principal European banking sectors (Germany, France, the United Kingdom, Italy and Spain) in the period 1993–2000 using a panel of 15,888 observations, identifying the fundamental elements affecting this margin. Our starting point is the methodology developed in the original study by Ho and Saunders [Journal of Financial and Quantitative Analysis XVI (1981) 581–600] and later extensions, but widened to take banks' operating costs explicitly into account. Also, unlike the usual practice in the literature, a direct measure of the degree of competition (Lerner index) in the different markets is used. The results show that the fall of margins in the European banking system is compatible with a relaxation of the competitive conditions (increase in market power and concentration), as this effect has been counteracted by a reduction of interest rate risk, credit risk, and operating costs.     

Accounting information and municipal bond net interest cost: An empirical evaluation

The objective of this study was to test the association between the surplus/deficit of selected Minnesota municipalities and the net interest cost of the general obligation bonds issued by these municipalities. This objective was accomplished by employing a pooled time-series design.A two-way analysis of variance was used to determine if there was a significant difference in the effect of net interest cost between positive and negative forecast errors. The ANOVA results of both tests indicate that the surplus/deficit is not correlated with increases/ decreases in the net interest cost of the bonds issued by a municipality. The results were unaffected by the exclusion of bond ratings as an independent variable.     

Evidence for state transition and altered serial codependence in US$ interest rates

This paper studies the codependence among, and drawdown and drawup properties of, US$ interest rates. The problem is attacked from the angle of regime switching. Different regimes are identified using the Hidden Markov Models (HMMs). The statistical properties in each state are examined separately and reconciled to form a coherent picture. We found that high fractions of reversals exist in the normal state and that consecutive bursts exist in the excited state. In large drawdowns and drawups (draws), long draws tend to be ‘democratic’, short draws tend to be ‘oligarchic’ and medium-size draws stay in either ‘democratic’ or ‘oligarchic’ mode, while conditionally independent draws are rarely found. We also investigated the distributions of draws. We found that HMMs recover the draw properties well and that the overall distribution of draws is an informationally-rich indicator about the correlation regime(s) in the various Markov states.     

On the determinants of credit rationing: Firm-level evidence from transition countries

Using survey data for firms from Eastern European transition economies we investigate the determinants of credit rationing. Our rationing definition incorporates firms whose loan application was rejected, but also ‘discouraged’ potential borrowers. We employ a bivariate probit with censoring, approach that accounts for the underlying selectivity since rationed firms are a subset of those without a loan. We include firm-specific attributes related to the alleviation of informational asymmetries, and therefore expected to affect credit rationing. We find that credit rationing depends on firm size, profitability, sales growth, ownership type, legal status, sectoral heterogeneity and the country-specific level of domestic credit.     

The interest rate pass-through in the euro area during the sovereign debt crisis

We investigate the pass-through of monetary policy to bank lending rates in the euro area during the sovereign debt crisis, in comparison to the pre-crisis period. We make the following contributions. First, we use a factor-augmented vector autoregression, which allows us to assess the responses of a large number of country-specific interest rates and spreads. Second, we analyze the effects of monetary policy on the components of the interest rate pass-through, which reflect banks' funding risk (including sovereign risk) and markups charged by banks over funding costs. Third, we not only consider conventional but also unconventional monetary policy. We find that while the transmission of conventional monetary policy to bank lending rates has not changed with the crisis, the composition of the pass-through has changed. Specifically, expansionary conventional monetary policy lowered sovereign risk in peripheral countries and longer-term bank funding risk in peripheral and core countries during the crisis, but has been unable to lower banks' markups. This was not, or not as much, the case prior to the crisis. Unconventional monetary policy helped decreasing lending rates, mainly due to large shocks rather than a strong propagation.     

The management of interest rate risk during the crisis: Evidence from Italian banks

We use a unique dataset to analyze how Italian banking groups managed their exposure to interest rate risk during the recent financial crisis. First of all, we document that on average the interest rate risk exposure – measured by duration gap approach – has been limited and well below the alert level enforced by regulators. Second, our econometric results indicate a relation of substitutability between banks’ on-balance-sheet interest rate risk and their use of interest rate derivatives suggesting that banks used these two instruments to curb their overall interest rate risk exposure in case of an increase in interest rates. Furthermore, we also find robust evidence of a negative correlation between banks’ interest rate risk and liquidity risk.     

The interest rate pass-through in the Euro area during the global financial crisis

This paper uses panel vector autoregressive (VAR) models for euro area member countries to explore the widening of retail bank interest rate spreads that emerged in the course of the global financial crisis. We find that the interest rate pass-through was generally complete on impact before the outbreak of the financial crisis, but became significantly distorted in the period thereafter, which hampered the effectiveness of monetary policy. Empirical evidence suggests that the decrease in the interest rate pass-through can be related to a change in the structural parameters characterizing the economies and a substantial increase in the average size of structural shocks. DSGE model simulations show that an increase in the frictions that banks are subject to can explain the decrease in the retail bank interest rate pass-through.     

Commercial bank net interest margins,default risk,interest-rate risk,and off-balance sheet banking

This paper tests the hypothesis that banks with more risky loans and higher interest-rate risk exposure would select loan and deposit rates to achieve higher net interest margins. Call Report data for different size classes of banks for 1989–1993 show that the net interest margins of commercial banks reflect both default and interest-rate risk premia. The net interest margins of money-center banks are affected by default risk, but not by interest rate risk, which is consistent with their greater concentration in short-term assets and off-balance sheet (OBS) hedging instruments. By contrast, (super-) regional banking firms are sensitive to interest-rate risk but not to default risk. The data show that OBS activities promote a more diversified, margins-generating asset base than deposit- or equity-financing, and that cross-sectional differences in interest-rate risk and liquidity risk are related to differences in OBS exposure.