Marcus Weber
Senior Forex Analyst
What Are Swap Rates?
A swap rate (also called a rollover fee or overnight financing charge) is the interest you pay or receive for holding a forex position overnight. Every forex trade involves borrowing one currency to buy another. Because each currency has its own interest rate set by its central bank, there is an interest rate differential between the two currencies in any pair.
When you hold a position past the daily rollover time (typically 5:00 PM New York time, which is 10:00 PM or 11:00 PM CET depending on daylight saving), your broker applies a swap charge or credit to your account. If you are long a currency with a higher interest rate than the one you are short, you receive a credit. If the situation is reversed, you pay a charge.
For day traders who close all positions before the rollover time, swaps are irrelevant. But for swing traders, position traders, or anyone holding trades for multiple days or weeks, swap costs can significantly eat into profits or, in some cases, add to them.
How Swaps Are Calculated
The basic swap calculation follows this formula:
Swap = (Contract Size x Swap Rate x Number of Nights) / 10
However, the actual swap rate your broker charges is not simply the raw interest rate differential. Brokers apply a markup to the swap, which is an additional cost of doing business. The markup varies significantly between brokers, and this is why swap rates for the same pair can differ substantially from one broker to another.
Several factors influence the swap rate you see on your platform:
- Central bank interest rates: The primary driver. If the ECB rate is 4.00% and the Fed rate is 5.25%, there is a 1.25% differential on EUR/USD that forms the basis of the swap.
- Broker markup: Most brokers add a margin to the raw swap rate. This is part of how they generate revenue, especially on swap-heavy strategies like carry trades.
- Liquidity provider rates: Brokers receive swap rates from their liquidity providers, which may differ from the pure interbank rate.
- Trade direction: Long and short swaps are different. You might pay on one direction and receive on the other, or pay on both (common when broker markups are high).
Triple Swap Wednesday
One important detail that catches many new traders off guard is the triple swap charged on Wednesdays. The forex market settles trades on a T+2 basis, meaning a trade executed on Wednesday settles on Friday. A trade held overnight Wednesday to Thursday covers the settlement period from Friday through the weekend to Monday.
Because of this, the swap charged on Wednesday night is tripled to account for Saturday and Sunday when the market is closed but interest still accrues. If you are holding a position with a negative swap, Wednesday night is the most expensive night. Conversely, if you are receiving a positive swap, you get three days of credit.
Some instruments, such as certain indices and commodities, may apply the triple swap on a different day (often Friday). Always check your broker's swap schedule for the specific instruments you trade.
Typical Swap Rate Examples
Illustrative swap rates in points per standard lot per night. Actual rates vary by broker and change frequently with central bank decisions.
| Pair | Direction | Typical Swap (pts) | Note |
|---|---|---|---|
| EUR/USD | Long | -0.62 | Negative (EUR rate < USD rate) |
| EUR/USD | Short | +0.11 | Small positive or near zero |
| USD/JPY | Long | +0.85 | Positive (USD rate > JPY rate) |
| USD/JPY | Short | -1.42 | Negative |
| EUR/TRY | Short | +8.50 | Large positive (TRY high rate) |
| GBP/CHF | Long | +0.35 | Positive (GBP rate > CHF rate) |
Positive vs Negative Swaps
Positive Swap (You Receive)
You earn interest when you are long the higher-yielding currency. For example, going long USD/JPY when USD rates exceed JPY rates. This is the basis of carry trade strategies where traders aim to profit from the interest differential as well as potential price appreciation.
Negative Swap (You Pay)
You pay interest when you are long the lower-yielding currency. This is a cost that compounds each night you hold the position. On some pairs with large rate differentials, negative swaps can be substantial and should be factored into your trading plan.
Be aware that many brokers charge negative swaps in both directions on certain pairs due to their markup. Even when the raw interest rate differential suggests you should receive a credit, the broker's markup may turn it into a charge. Always check the actual swap rates on your trading platform before entering a long-term position.
Swap-Free Account Alternatives
Some brokers offer swap-free accounts (also called Islamic accounts) that do not charge or credit overnight interest. These were originally designed to comply with Islamic finance principles that prohibit earning or paying interest (riba), but some brokers offer them to a wider audience.
Key points about swap-free accounts in the EU:
- Alternative fees may apply: Instead of swaps, brokers often charge an administration fee or widen spreads on swap-free accounts. The total cost may be comparable to or higher than standard swap charges.
- Not all pairs available: Some brokers limit the instruments available on swap-free accounts or only waive swaps for a certain number of days before applying a holding fee.
- Carry trade limitation: Without positive swaps, carry trade strategies are not viable on swap-free accounts.
- Regulatory compliance: EU-regulated brokers offering swap-free accounts must still comply with all ESMA requirements including leverage limits and negative balance protection.
Tips for Managing Swap Costs
- Compare broker swap rates. Swap rates vary significantly between brokers. Use our broker comparison tool to see how different brokers stack up.
- Factor swaps into your trade plan. Before entering a swing trade, calculate the total swap cost for your expected holding period and ensure your profit target exceeds this cost.
- Be strategic about Wednesday. If you are close to closing a trade on a Tuesday or Wednesday, consider whether the triple swap cost justifies holding through another night.
- Consider the carry. When your directional bias is neutral, consider trading in the direction that gives you a positive swap, so time works in your favor rather than against it.
- Check rates regularly. Swap rates change when central banks adjust interest rates. A pair that was swap-positive last month may now be swap-negative. Monitor the economic calendar for upcoming rate decisions.
Ready for the Next Step?
Compare swap rates across EU brokers and find the most cost-effective option for your trading style.