This book examines the options for adopting an appropriate model of exchange rate determination and its associated regime suitable for developing countries, with a case study of Indonesia. It examines exchange rate issues, develops market-based, equilibrium, and shadow-pricing exchange rate models for developing countries, and suggests a suitable approach which is based on the consideration of all these three types of models and the choice of its associated exchange rate regime. The book shows that a credible exchange rate regime and policy, which reduces uncertainty in the exchange rate market, may mitigate the flight to currency from broad money, and ensure the stability and certainty for private sectors especially in terms of export competitiveness. A set of market-based and equilibrium exchange rate models are developed and tested.