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Does monetary policy affect the net interest margin of credit institutions? Evidence from Colombia

Author

Listed:
  • Javier Eliecer Pirateque-Niño
  • Daniela Rodríguez-Novoa
  • José Hernán Piñeros-Gordo
Abstract
This paper analyzes empirically the relationship between monetary policy interventions and the net interest margin of Colombian credit institutions for the 2003 – 2019 period. Considering the endogeneity problem that arises when analysing this relationship, we calculate a series of monetary policy shocks as the residuals of regressing the monetary policy rate on a set of quantifiable variables that the Central Bank of Colombia’s Board of Directors had at each of its monetary policy meetings. Thereafter, we conduct a panel regression analysis in which we relate these shocks, and a set of macroeconomic and bank-specific variables to the net interest margin. Through a non-linear approach, we find a significant quadratic relationship, which reflects that once the endogeneity problem is overcome, the net interest margin increases to policy shocks. The net interest margin increases to positive policy shocks due to the different dynamics of deposits and loans, and increases to negative policy shocks given the higher sensitivity of banks’ funding costs compared to the one of interest income. **** Este documento analiza empíricamente la relación entre las intervenciones de política monetaria y el margen neto de interés de los establecimientos de crédito en Colombia entre 2003 y 2019. Con el fin de controlar por la endogeneidad que subyace a esta relación, se calcula una serie de choques de política monetaria. Estos choques corresponden a los residuales de una regresión entre la tasa de política monetaria y un conjunto de variables cuantificables disponibles para la Junta Directiva del Banco de la República al momento de cada una de sus reuniones de política monetaria. Seguido de esto, se realiza un análisis de panel de datos en el que se utilizan como variables explicativas del margen neto de interés la serie de choques, algunas variables macroeconómicas y algunas propias de cada entidad. Mediante una aproximación no lineal, se encuentra una relación cuadrática significativa, la cual indica que una vez se supera el problema de endogeneidad, el margen neto de interés se incrementa ante choques de política monetaria. Ante choques positivos de política monetaria, el aumento en el margen neto de interés obedece al comportamiento asimétrico de los préstamos y los depósitos. Por su parte, ante choques negativos de política monetaria el margen neto de interés incrementa dada la mayor sensibilidad de los costos de fondeo bancarios frente a los ingresos por intereses.

Suggested Citation

  • Javier Eliecer Pirateque-Niño & Daniela Rodríguez-Novoa & José Hernán Piñeros-Gordo, 2022. "Does monetary policy affect the net interest margin of credit institutions? Evidence from Colombia," Borradores de Economia 1197, Banco de la Republica de Colombia.
    • Handle: RePEc:bdr:borrec:1197
    DOI: 10.32468/be.1197
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    References listed on IDEAS

    as
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    More about this item

    Keywords

    net interest margin; monetary policy shock; credit intensity; interest rates; margen neto de interés; choques de política monetaria; intensidad del crédito; tasas de interés;
    All these keywords.

    JEL classification:

    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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