摘要:This paper analyzes the presence of the threshold of the real rupiah exchange rate which influences the profitability of manufacturing industry in Indonesia. By using a non-dynamics panel data over medium and large scale companies during 2001-2009, we found the threshold of 82.4 for the real rupiah exchange rate (REER). The REER index ranging from 82.24 to 101.13 with the change value between -5.01% and 20.09% (yoy) is secure for the profitability of Indonesian manufacturing industry. This paper also conform the significant affect of Total Factor Productivity on firm’s profitability.