This paper examines the relative importance of monetary growth and exchange rate depreciation as causes of inflation in a sample of 10 Sub-Saharan African countries. Causality tests and impulse response functions derived from vector autoregression (VAR) analysis suggest that both monetary expansion and exchange rate adjustments cause inflation in a number of these countries. However, the failure of the tests to attribute the bulk of the variance in inflation in most of the countries to either variable suggests either a problem with the statistical technique or that some other factor--perhaps structural bottlenecks or a measure of overall macroeconomic policy stance incorporating both monetary and exchange rate policy--may be even more important as a determinant of inflation in African countries.

This paper examines the relative importance of monetary growth and exchange rate depreciation as causes of inflation In a sample of 10 Sub-Saharan African countries. Causality tests and impulse response functions derived from vector autoregression (VAR) analysis suggest that both monetary expansion and exchange rate adjustments cause inflation in a number of these countries. However, the failure of the tests to attribute the bulk of the variance in inflation in most of the countries to either variable suggests either a problem with the statistical technique or that some other factor--perhaps structural bottlenecks or a measure of overall macroeconomic policy stance incorporating both monetary and exchange rate policy--may be even more Important as a determinant of inflation in African countries.

Since the mid-1970s the annual inflation rate in Africa has averaged more than 15 percent, with many countries experiencing rates of 20 percent or more. Inflation rates of this magnitude have significant adverse effects on the financial sectors of African countries, particularly in the context of fixed nominal interest rates. Econometric analysis points strongly to monetary expansion as a major cause of inflation in African countries generally. Exchange rate depreciation is also associated with higher inflation, although in some countries the domestic currency was depreciated to offset the effects of recent inflation, rather than being a cause of inflation.

Is there a link between devaluation and high inflation? It depends on accompanying monetary and fiscal policies and the presence of parallel markets. An open capital account would curtail fiscal profligacy and provide price stability without jeopardizing growth.

Since the mid-1970s the annual inflation rate in Africa has averaged more than 15 percent, with many countries experiencing rates of 20 percent or more. Inflation rates of this magnitude have significant adverse effects on the financial sectors of African countries, particularly in the context of fixed nominal interest rates. Econometric analysis points strongly to monetary expansion as a major cause of inflation in African countries generally. Exchange rate depreciation is also associated with higher inflation, although in some countries the domestic currency was depreciated to offset the effects of recent inflation, rather than being a cause of inflation.

This paper provides new evidence on the exchange rate passthrough to domestic inflation in Sub-Saharan Africa (SSA) using both bilateral US dollar exchange rate and the nominal effective exchange rate (NEER), and monthly data. We find that depreciations cause sizable increases in domestic inflation. The passthrough in SSA is higher than in other regions and its magnitude depends on the exchange rate regime, type of exchange rate (bilateral versus NEER), natural resource endowment and domestic market competitiveness. The passthrough is found to be disproportionately larger and more persistent for large depreciation shocks, and for exchange rate changes that are more persistent. We also find evidence of asymmetry, with passthrough eight times stronger during depreciations than appreciations. Additional findings suggest that improved monetary policy effectiveness is an important driver of our observed declining estimates of exchange rate passthrough over time, supporting the long-standing view that strengthening monetary policy frameworks and credibility helps mitigate the impact of depreciations on inflation.