In trading, swaps are adjustments made to your trade when it’s held overnight. These can be either double swaps or triple swaps.
A double swap is the usual nightly adjustment for holding a trade. It can work for or against you, depending on the interest rate difference between the currencies.
Triple swaps, however, happen on Wednesday nights. This adjustment accounts for three days—Wednesday, Thursday, and Friday—to cover interest over the weekend when markets are closed. Like double swaps, they can be either positive or negative.
The triple swap is simply the daily swap rate multiplied by three.
When holding positions overnight, always factor in swaps and triple swaps in your trading plan.