Monetary policy transmission in South Africa: a comparative analysis of credit and exchange rate channels
- Authors: Sebitso, Nathaniel Maemu
- Date: 2011
- Subjects: Monetary policy -- South Africa , Foreign exchange market -- South Africa , Financial crises -- South Africa , South Africa -- Economic conditions , South Africa -- Economic policy , Banks and banking -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1129 , http://hdl.handle.net/10962/d1020851
- Description: This thesis focuses on monetary policy transmission and particularly seeks to examine the impact of credit and exchange rate channels of monetary policy transmission in the South African economy. South Africa's monetary policy has gone through several changes over the past thirty years. In this respect, there is a need for robust empirical evidence on the effects of these channels on inflation and output. The thesis employs a structural vector autoregressive (SVAR) model to identify monetary transmission in South Africa for the period 1994:q4 - 2008:q2. The form of the SVAR used in this thesis is based on the fact that South Africa is a small open economy, which means that external shocks are an important driver of domestic activity. The impulse responses and variance decomposition results show that the repo rate, credit and exchange rate play a role in terms of their impact on inflation and output. The dynamic responses to the identified monetary policy shock are consistent with standard theory and highlight the importance of the interest rate channel. A shock to the interest rate, increasing it by one standard deviation, results in a persistent fall in credit. The response of output is immediate as it falls and bottoms out within the second year. Inflation shows a lagged response, it is positive within the first year as the exchange rate depreciates but in subsequent quarters inflation responds negatively as expected. Inflation falls and reaches a minimum by approximately eight quarters then moves towards baseline. The exchange rate shows delayed appreciation. The shock to the repo interest rate leads to an immediate depreciation of the exchange rate in the first two quarters as output declines, followed by an appreciation in the third and sixth quarter. Due to larger error bounds the impact of the repo rate on the exchange rate could be less effective within the first two years. The impulse responses suggest that monetary policy plays an effective role in stabilising the economy in response to a credit shock, notwithstanding large standard error bounds. Hence, the monetary authority reacts by increasing the repo rate as a result of inflation. The impact of credit on output is positive but is offset to some extent by the rising repo rate. In response to the rand appreciation, the monetary authority reduces the repo rate significantly during the first year with the maximum impact in the second year and then returns to baseline thereafter. Therefore the monetary authority reduces the repo rate, probably to stabilise falling inflation. The result shows that inflation falls as a result of the rand appreciation. A shock to the exchange rate causes a rise in output, though small in magnitude, which is persistent but reaches baseline at the end of the period. This result could reflect the effects of the resultant fall in the repo rate and a persistent rise in credit over the whole period, which tends to increase output. The exchange rate shows an obvious and stronger immediate impact on inflation compared to credit impact on inflation. However, the credit shock has an obvious and stronger impact on output compared to an exchange rate impact on output. However, the large standard error bounds may imply that credit and exchange rate channels are not as effective in the short run. It is important to note that the results are based on the SVAR model estimated with percentage growth rate of the variables. The variance decomposition result is in line with the impulse responses and shows that the exchange rate and credit channels could be important transmission channels in South Africa over the chosen sample period. The exchange rate and credit shocks show a stronger effect on inflation than on output, looking at both the impulse responses and variance decomposition results. The reaction of the repo interest rate to the credit and exchange rate shocks comes out as expected. The repo rate increases as a result of an increase in the credit and falls as a result of the currency appreciation.
- Full Text:
- Authors: Sebitso, Nathaniel Maemu
- Date: 2011
- Subjects: Monetary policy -- South Africa , Foreign exchange market -- South Africa , Financial crises -- South Africa , South Africa -- Economic conditions , South Africa -- Economic policy , Banks and banking -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1129 , http://hdl.handle.net/10962/d1020851
- Description: This thesis focuses on monetary policy transmission and particularly seeks to examine the impact of credit and exchange rate channels of monetary policy transmission in the South African economy. South Africa's monetary policy has gone through several changes over the past thirty years. In this respect, there is a need for robust empirical evidence on the effects of these channels on inflation and output. The thesis employs a structural vector autoregressive (SVAR) model to identify monetary transmission in South Africa for the period 1994:q4 - 2008:q2. The form of the SVAR used in this thesis is based on the fact that South Africa is a small open economy, which means that external shocks are an important driver of domestic activity. The impulse responses and variance decomposition results show that the repo rate, credit and exchange rate play a role in terms of their impact on inflation and output. The dynamic responses to the identified monetary policy shock are consistent with standard theory and highlight the importance of the interest rate channel. A shock to the interest rate, increasing it by one standard deviation, results in a persistent fall in credit. The response of output is immediate as it falls and bottoms out within the second year. Inflation shows a lagged response, it is positive within the first year as the exchange rate depreciates but in subsequent quarters inflation responds negatively as expected. Inflation falls and reaches a minimum by approximately eight quarters then moves towards baseline. The exchange rate shows delayed appreciation. The shock to the repo interest rate leads to an immediate depreciation of the exchange rate in the first two quarters as output declines, followed by an appreciation in the third and sixth quarter. Due to larger error bounds the impact of the repo rate on the exchange rate could be less effective within the first two years. The impulse responses suggest that monetary policy plays an effective role in stabilising the economy in response to a credit shock, notwithstanding large standard error bounds. Hence, the monetary authority reacts by increasing the repo rate as a result of inflation. The impact of credit on output is positive but is offset to some extent by the rising repo rate. In response to the rand appreciation, the monetary authority reduces the repo rate significantly during the first year with the maximum impact in the second year and then returns to baseline thereafter. Therefore the monetary authority reduces the repo rate, probably to stabilise falling inflation. The result shows that inflation falls as a result of the rand appreciation. A shock to the exchange rate causes a rise in output, though small in magnitude, which is persistent but reaches baseline at the end of the period. This result could reflect the effects of the resultant fall in the repo rate and a persistent rise in credit over the whole period, which tends to increase output. The exchange rate shows an obvious and stronger immediate impact on inflation compared to credit impact on inflation. However, the credit shock has an obvious and stronger impact on output compared to an exchange rate impact on output. However, the large standard error bounds may imply that credit and exchange rate channels are not as effective in the short run. It is important to note that the results are based on the SVAR model estimated with percentage growth rate of the variables. The variance decomposition result is in line with the impulse responses and shows that the exchange rate and credit channels could be important transmission channels in South Africa over the chosen sample period. The exchange rate and credit shocks show a stronger effect on inflation than on output, looking at both the impulse responses and variance decomposition results. The reaction of the repo interest rate to the credit and exchange rate shocks comes out as expected. The repo rate increases as a result of an increase in the credit and falls as a result of the currency appreciation.
- Full Text:
The relationship between interest rates and inflation in South Africa : revisiting Fisher's hypothesis
- Mitchell-Innes, Henry Alexander
- Authors: Mitchell-Innes, Henry Alexander
- Date: 2006
- Subjects: Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:991 , http://hdl.handle.net/10962/d1002726 , Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Description: This thesis investigates the relationship between expected inflation and nominal interest rates in South Africa and the extent to which the Fisher effect hypothesis holds. The hypothesis, proposed by Fisher (1930), that the nominal rate of interest should reflect movements in the expected rate of inflation has been the subject of much empirical research in many industrialised countries. This wealth of literature can be attributed to various factors including the pivotal role that the nominal rate of interest and, perhaps more importantly, the real rate of interest plays in the economy. The validity of the Fisher effect also has important implications for monetary policy and needs to be considered by central banks. Few studies have been conducted in South Africa to validate this important hypothesis. The analysis uses the 3-month bankers’ acceptance rate and the 10-year government bond rate to proxy both short- and long-term interest rates. The existence of a long-run unit proportional relationship between nominal interest rates and expected inflation is tested using Johansen’s cointegration test. The data is analysed for the period April 2000 to July 2005 as the research aims to establish whether the Fisher relationship holds within an inflation targeting monetary policy framework. The short-run Fisher effect is not empirically verified. This is due to the effects of the monetary policy transmission mechanism and implies that short-term nominal interest rates are a good indication of the stance of monetary policy. A long-run cointegrating relationship is established between long-term interest rates and expected inflation. The long-run adjustment is less than unity, which can be attributed to the credibility of the inflation-targeting framework.
- Full Text:
- Authors: Mitchell-Innes, Henry Alexander
- Date: 2006
- Subjects: Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:991 , http://hdl.handle.net/10962/d1002726 , Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Description: This thesis investigates the relationship between expected inflation and nominal interest rates in South Africa and the extent to which the Fisher effect hypothesis holds. The hypothesis, proposed by Fisher (1930), that the nominal rate of interest should reflect movements in the expected rate of inflation has been the subject of much empirical research in many industrialised countries. This wealth of literature can be attributed to various factors including the pivotal role that the nominal rate of interest and, perhaps more importantly, the real rate of interest plays in the economy. The validity of the Fisher effect also has important implications for monetary policy and needs to be considered by central banks. Few studies have been conducted in South Africa to validate this important hypothesis. The analysis uses the 3-month bankers’ acceptance rate and the 10-year government bond rate to proxy both short- and long-term interest rates. The existence of a long-run unit proportional relationship between nominal interest rates and expected inflation is tested using Johansen’s cointegration test. The data is analysed for the period April 2000 to July 2005 as the research aims to establish whether the Fisher relationship holds within an inflation targeting monetary policy framework. The short-run Fisher effect is not empirically verified. This is due to the effects of the monetary policy transmission mechanism and implies that short-term nominal interest rates are a good indication of the stance of monetary policy. A long-run cointegrating relationship is established between long-term interest rates and expected inflation. The long-run adjustment is less than unity, which can be attributed to the credibility of the inflation-targeting framework.
- Full Text:
The yield curve as a forecasting tool : does the yield spread predict recessions in South Africa?
- Authors: Khomo, Melvin Muzi
- Date: 2006
- Subjects: Recessions -- South Africa , Monetary policy -- South Africa , Economic development -- South Africa , Economic indicators -- South Africa , Business cycles -- History -- 20th century , Business cycles -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1040 , http://hdl.handle.net/10962/d1004722 , Recessions -- South Africa , Monetary policy -- South Africa , Economic development -- South Africa , Economic indicators -- South Africa , Business cycles -- History -- 20th century , Business cycles -- South Africa , South Africa -- Economic conditions
- Description: This paper examines the ability of the yield curve to predict recessions in South Africa, and compares its predictive power with other commonly used variables that include the growth rate in real money supply, changes in stock prices and the index of leading economic indicators. The study also makes an attempt to find out if monetary policy explains the yield spread's predictive power with regards to future economic activity. Regarding methodology, the standard probit model proposed by Estrella and Mishkin (1996) that directly estimates the probability of the economy going into recession is used. Results from this model are compared with a modified probit model suggested by Dueker (1997) that includes a lagged dependent variable. Results presented in the paper provide further evidence that the yield curve, as represented by the yield spread between 3-month and IO-year government paper, can be used to estimate the likelihood of recessions in South Africa. The yield spread can produce recession forecasts up to 18 months, although it's best predictive power is seen at two quarters. Results from the standard probit model and the modified pro bit model with a lagged dependent variable are somewhat similar, although the latter model improves forecasts at shorter horizons up to 3 months. Compared with other indicators, real M3 growth is a noisy indicator and does not provide much information about future recessions, whilst movements in the All-Share index can provide information for up to 12 months but does not do better than the yield curve. The index of leading economic indicators outperforms the yield spread in the short run up to 4 months but the spread performs better at longer horizons. Based on the results from the study, it appears that changes in monetary policy explain the yield spread's predictive power. This is because the yield spread loses its explanatory power when combined with a variable representing the monetary policy stance of the central bank.
- Full Text:
- Authors: Khomo, Melvin Muzi
- Date: 2006
- Subjects: Recessions -- South Africa , Monetary policy -- South Africa , Economic development -- South Africa , Economic indicators -- South Africa , Business cycles -- History -- 20th century , Business cycles -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1040 , http://hdl.handle.net/10962/d1004722 , Recessions -- South Africa , Monetary policy -- South Africa , Economic development -- South Africa , Economic indicators -- South Africa , Business cycles -- History -- 20th century , Business cycles -- South Africa , South Africa -- Economic conditions
- Description: This paper examines the ability of the yield curve to predict recessions in South Africa, and compares its predictive power with other commonly used variables that include the growth rate in real money supply, changes in stock prices and the index of leading economic indicators. The study also makes an attempt to find out if monetary policy explains the yield spread's predictive power with regards to future economic activity. Regarding methodology, the standard probit model proposed by Estrella and Mishkin (1996) that directly estimates the probability of the economy going into recession is used. Results from this model are compared with a modified probit model suggested by Dueker (1997) that includes a lagged dependent variable. Results presented in the paper provide further evidence that the yield curve, as represented by the yield spread between 3-month and IO-year government paper, can be used to estimate the likelihood of recessions in South Africa. The yield spread can produce recession forecasts up to 18 months, although it's best predictive power is seen at two quarters. Results from the standard probit model and the modified pro bit model with a lagged dependent variable are somewhat similar, although the latter model improves forecasts at shorter horizons up to 3 months. Compared with other indicators, real M3 growth is a noisy indicator and does not provide much information about future recessions, whilst movements in the All-Share index can provide information for up to 12 months but does not do better than the yield curve. The index of leading economic indicators outperforms the yield spread in the short run up to 4 months but the spread performs better at longer horizons. Based on the results from the study, it appears that changes in monetary policy explain the yield spread's predictive power. This is because the yield spread loses its explanatory power when combined with a variable representing the monetary policy stance of the central bank.
- Full Text:
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