RollOver

A spot transaction is generally due for settlement within two business days (the value date). The cost of rolling over a transaction is based on the interest rate differential between the two currencies in a transaction. If you are long (bought) the currency with a higher rate of interest you will earn interest. If you are short (sold) the currency with a higher rate of interest you will pay interest. Most brokers will automatically roll over your open positions allowing you to hold your position indefinitely.