Swap Calculator

What Are Swaps (Rollovers) in Forex Trading?

A swap, also known as a rollover fee, is the interest rate differential charged or credited to your account when you hold a forex position overnight. Forex trading involves simultaneously buying one currency and selling another, and each currency has its own interest rate set by its central bank. The swap is calculated based on the difference between these two rates.

If you buy a currency with a higher interest rate than the one you are selling, you may receive a positive swap (credit). Conversely, if you buy a currency with a lower interest rate, you will pay a negative swap (debit). This concept is closely related to the "carry trade" strategy, where traders specifically seek positions that earn positive swap income.

How Swap Rates Are Calculated

Brokers calculate swap rates based on the interbank interest rate differential between the two currencies in a pair, plus their own markup or spread. The formula varies by broker, but generally: Swap = (One-Day Interest Rate Difference + Broker Markup) x Position Size. Swap rates are quoted in points or pips and are applied at the daily rollover time, typically 5:00 PM EST (New York time).

It is important to note that swap rates change frequently as central banks adjust their interest rate policies. A pair that currently offers positive swap on long positions might shift to negative swap if the central bank of the base currency cuts rates. Our calculator uses approximate current swap rates, but you should always verify the exact rates with your broker.

Managing Swap Costs in Your Trading

For short-term traders who hold positions for hours or a single day, swap costs are usually negligible. However, for swing traders and position traders who hold trades for days, weeks, or months, swap costs can significantly impact overall profitability. It is essential to factor in these costs when calculating potential profit and loss, especially for long-duration trades.

Some brokers offer swap-free (Islamic) accounts that do not charge or pay swap fees, in compliance with Sharia law. These accounts may instead charge an administration fee for positions held beyond a certain period. If swap costs are a significant concern for your trading strategy, exploring swap-free options or adjusting your holding periods to minimize exposure may be worthwhile strategies.