The purpose of this research is to know how the impact of the Intematinal Interest Rate (Sibor and Libor) on valas rate (US$) in the short, as well as long term in Indonesia. The data that used in this research is 1993-2006. This study uses Error Correction Model (ECM). The results show that International Interest Rate (Sibor and Libor) affects Valas Rate or Rupiah’s exchange rate (Rp/$US) si…