This paper investigates currency and financial crises in an optimizing general equilibrium model. It is shown that a rise in current and expected future budget deficits generates a real exchange rate appreciation and a decumulation of external assets, leading up to a currency crisis when foreign...

This paper derives the optimal response of the primary budget surplus to changes in the debt-to-GDP ratio in a stochastic model of debt. Under the optimal solution the surplus reactivity to the debt-to-GDP ratio is independent of the debt ratio itself, but its size depends on economic...