Assessing the Effects of Exchange rate and Oil Price Instability on Government Debt to the Banking System: Wavelet-based Markov Switching Model

In this research, the role of nominal exchange rate, current government expenditure and oil price volatilities on the government debt to the banking system was investigated by using Markov-Switching model during 1388-1397 monthly. To Extract the volatilities of Variables, we use wavelet transform. the evidence confirm that decomposition levels of variables is 3. The results show that the effect of exchange rate volatility in different regimes and different time periods is different, so that in the short run the exchange rate instability in the high regime of government debt to the banking system has a different effect rather than other time periods.In fact, according to the results, in short run exchange rate volatility in high regime of government debt has positive and signifcant effect on government debt to the banking system. Also, oil price instability and current government expenditure have a positive and significant impact on debt in all periods. These results suggest that the banking system in order to provide facilities should consider the instability of various asset markets and in addition government debt regimes and time horizons. As long as the economy's dependence on oil revenues is not decreased, there will be an incentive to use exchange rate volatility in the short run for decreasing the amount of government debt to banking system.