Swap refers to the profit or loss generated by the interest rate differential between two currencies. If you buy a currency with a higher interest rate and sell a currency with a lower interest rate, you will make a profit. Conversely, if you buy a currency with a lower interest rate and sell a currency with a higher interest rate, a loss will occur.
Swap rates are applied if you hold a position across the server’s time when the date changes.
For information on how swap is calculated, please refer to the link below: