Implications of the Modigliani-Miller Theorem for the Study of Exchange Rate Regimes

We extend the Modigliani-Miller Theorem to the composition of the public debt and show that in a deterministic model the structure of a government's assets and liabilities is undetermined. Hence, a floating exchange rate regime can implement any attainable competitive equilibrium. Concerning stochastic economies, if the government issues nominal bonds of several maturities, then the same result may hold. Thus, a conceivable link between the choice of an exchange rate regime and economic outcomes may be due to factors often not considered in standard macroeconomic models.