Accurately calculate the overnight interest (rollover) you'll pay or earn on your forex trades.
Calculate the overnight swap fees (rollover) for your forex trades.
What you need to know about overnight financing costs.
A swap is the interest paid or earned for holding a forex position overnight. It is based on the interest rate differential between the two currencies in the pair.
If you buy a high-interest currency against a low-interest one, you may earn interest (positive swap). Conversely, you pay interest (negative swap) if you do the opposite.
Most brokers charge triple swap rates on Wednesday nights to account for the weekend settlement period. Keep this in mind for mid-week trades.