This paper explores the links between gradual capital account liberalization and the exchange rate regime in Morocco where the process of economic and financial openness is relatively advanced. Using a game theory model with two economic agents, that are monetary authorities and domestic firms, we explore the best choice concerning the exchange rate regime for Morocco in a context characterised by increasing openness especially of capital account. The results show that welfare under a flexible exchange rate regime is higher compared to welfare under a fixed exchange rate regime. The analysis also shows that the flexible exchange rate will improve competitiveness. However, flexibility will undermine price stability.