Effects Of Interest Rates On FX Rates
FX rates movement are determined by supply and demand. So, one of the main factors determing rates movement is the currency pair countries’ interest rates. For example, if the US Federal Reserve bank were to lower interest rates, the US dollar will weaken against the other currencies. This is because holders of US dollars will earn less in interest payments due to the lower interest rates. Holders of US dollars will sell their US currencies and put them in other currencies that earn better interest, thereby weakening the US dollar.

