The Efficacy of Official Intervention in the Foreign Exchange Market in Malawi

Abstract :  This paper analyses the effectiveness of foreign exchange market interventions by the Reserve Bank of Malawi (RBM). We use a GARCH (1, 1) model to simultaneously estimate the effect of intervention on the mean and volatility of the Malawi kwacha. Results from the GARCH model indicate that net sales of US dollars by the RBM depreciate, rather than appreciate, the kwacha. Empirically, this implies the RBM ‘leans against the wind’, that is, the RBM intervenes to reduce, but not reverse, exchange rate depreciation. On the other hand, results for the GARCH model for the post‐2003 period indicate the RBM intervention in the market stabilizes the kwacha. In general, results for the entire study period show that the RBM interventions have been associated with increased exchange rate volatility, with the only exception being the post‐2003 period. The implication of this finding is that intervention can only have a temporary influence on the exchange rate.