The swap: what overnight financing costs are

When you trade a currency pair with leverage, you are essentially borrowing funds in one currency to hold exposure in another. That loan has a price, and the market settles it at the end of each day: if the position is still open when the daily cut-off passes, an adjustment known as the swap, or overnight financing cost, is applied. It is not a broker penalty, it is the pass-through of a financial reality.

Its origin lies in the interest rate differential of the pair’s two currencies. Holding a position means earning interest on the currency you hold and paying it on the currency you owe. Added to that differential are the liquidity provider’s and the intermediary’s margin, plus adjustments arising from money market conditions at the time. That is why the swap is neither an invented number nor fixed forever: it moves when rates move.

Hence it can be negative or positive. If you buy the higher-rate currency against the lower-rate one, the adjustment may be a credit; in the opposite direction, a charge. The practical consequence matters: two traders with the same market view, one long and one short, can face radically different holding costs. And a central bank decision can flip the sign of that adjustment from one day to the next.

On top of this comes a quirk that surprises beginners: the triple swap. Settlement in the currency market takes place on a T+2 basis, so a position held overnight on Wednesday settles on Friday and carries the weekend with it. To compensate, on that day (or whichever day applies to the instrument) three days of adjustment are charged at once. Seeing a tripled charge is not an error: it is the settlement calendar.

The impact depends on the time horizon. A day trader who closes every position before the cut-off never pays a swap; the cost that matters there is the spread. In swing trading and in positions held for weeks or months the opposite is true: the swap accumulates night after night and can turn a trade that looked right on the chart into a loser. Any medium-term strategy should include financing costs in its arithmetic from the outset, rather than discovering them at the close.

Nor are all instruments treated alike. On index and commodity CFDs, financing is calculated on the notional value of the position and follows the rate reference of the relevant currency; on shares, dividend adjustments come into play as well; and some products, such as certain synthetic indices, work under their own treatment which can differ from that of a currency pair. Where a swap-free arrangement exists, the industry norm is for the adjustment to be replaced by an administrative fee rather than for the cost to vanish.

The operating conclusion is simple: check it before opening, not afterwards. In MetaTrader 5 the swap values for long and short positions, together with their calculation unit, appear in each instrument’s specifications, and the account history shows the adjustments already applied. VexPro publishes those conditions instrument by instrument on the platform, and any question can be settled with the support team before trading. Knowing the cost does not guarantee the outcome: trading leveraged instruments carries a risk of loss.