A Forex overnight swap fee can shrink a winning trade or deepen a losing one without the price moving at all. Brokers apply a swap, also called an overnight financing charge or rollover fee, whenever a position stays open past the daily rollover.
The cost is easy to miss while watching the chart. Yet over a few nights, it can exceed the spread paid to open the trade.
This article explains how swap charges in Forex work, what drives the amount, how to calculate it step by step, which strategies are most exposed and how Taurex applies swaps and swap-free terms.
What Is a Forex Overnight Swap Fee and How Does It Work?
A Forex swap is a charge or credit that can apply when you keep a position open past your broker’s daily rollover time. It is also called an overnight financing charge or rollover fee. The amount generally reflects the interest rate difference between the two currencies in the pair, along with the broker’s own financing terms.
Each currency pair has separate swap rates for long and short positions. Depending on the pair, position direction and current rates, you may pay a swap or receive a credit.
A position closed before the daily rollover does not normally incur an overnight swap. Swap is also different from the spread. The Forex spread is the difference between the bid and ask price when you enter or exit a trade, while swap can apply each time a position remains open through another rollover.
How Do Overnight Swap Fees Affect Trading Profits?
Swap can have a small effect on a single trade but become much more significant when positions stay open for several nights.
- Increase in total trading costs: Swap is added to your other trading costs, such as the spread and commission. A multi-day position can therefore cost more than the initial spread suggests.
- Reduce profits on winning trades: A profitable position can give back part of its gains through negative swap. For example, if a trade makes $150 before swap and accumulates $39 in charges, the net profit falls to $111.
- Increase losses on losing trades: Swap applies regardless of whether the position is profitable. A trade showing a $100 loss could become a $139 loss after $39 in accumulated swap charges. This effect is compounded when Forex drawdown is already building across multiple open positions.
- Add up over multiple nights: Each rollover can add another charge or credit. One day of the week may include three days of swap to account for the weekend, while public holidays can also affect the number of days charged.
- Reduce returns over time: A small daily charge can become significant when positions remain open for weeks. Positive swap can offset some of the cost, but it should not be the main reason for keeping a position open.
What Factors Affect a Forex Overnight Swap Fee?
The swap you see for a position depends on several factors, including the currency pair, position size and how long you keep the trade open.
- Currency pair: Each currency has its own interest rate and financing conditions. The difference between the two currencies helps determine the underlying swap.
- Position size: Larger positions generally produce larger swap charges or credits because the amount being financed is greater.
- Long or short position: Brokers usually publish separate swap rates for buy and sell positions. One direction may result in a charge while the other may receive a credit.
- Broker’s swap rate: Brokers apply their own financing terms, so the same currency pair can have different swap rates from one broker to another.
- Interest rate differences: Changes in central bank rates can affect the financing difference between two currencies and may lead to changes in swap rates.
- Number of nights held: Swap can apply at each daily rollover, so keeping a position open for longer increases the total charge or credit.
- Broker and market financing conditions: Swap rates can change over time as financing costs and the broker’s pricing conditions change. The rate shown when you open a position may not remain the same throughout a longer holding period.
The broker’s pricing is particularly important when comparing swap rates. Two brokers can offer different charges or credits on the same currency pair, so check the actual long and short swap rates rather than relying only on the interest rate difference between the currencies.
How Do You Calculate a Forex Overnight Swap Fee?
The basic calculation depends on how your broker quotes its swap rate. If the rate is given in your account currency per lot per night, you can use:
Swap cost = swap rate × position size in lots × number of swap days
If the broker quotes swap in points rather than account currency, you need to convert the points into a monetary amount first. Always check the unit shown in your trading platform before calculating the cost.
How to Check the Applicable Swap Rate
On MetaTrader, you can find the swap rates in the symbol specifications:
- Open Market Watch.
- Find the currency pair you want to trade.
- Right-click the symbol and open its specifications or properties.
- Check the swap long and swap short values.
Use the swap long rate for a buy position and the swap short rate for a sell position. The exact menu names can vary between MT4 and MT5.
How to Determine the Position Size
Swap generally increases with position size, so check how many lots you plan to trade. A standard lot represents 100,000 units of the base currency, while smaller positions receive a proportional amount of the applicable swap.
How to Count the Nights the Position Is Held
Count each rollover that the position remains open. One rollover each week commonly includes three days of swap to account for the weekend, although the exact day can vary by broker and instrument.
For example, Taurex normally applies triple swap on Wednesday for Forex positions. Checking the Forex market hours can help you understand when positions move through the daily rollover.
How to Calculate the Total Swap Cost or Credit
Multiply the swap rate by the position size and the number of applicable swap days. A negative result represents a charge, while a positive result represents a credit.
Example: Assume you buy 1 lot with a swap long rate of -$6.50 per night and close the position on Friday before the daily rollover.
| Rollover | Swap days | Charge | Running total |
| Monday | 1 | -$6.50 | -$6.50 |
| Tuesday | 1 | -$6.50 | -$13.00 |
| Wednesday | 3 | -$19.50 | -$32.50 |
| Thursday | 1 | -$6.50 | -$39.00 |
The total swap cost is:
1 lot × $6.50 × 6 swap days = $39.00
If the trade made a gross profit of $150, the $39 swap charge would reduce the net profit to $111.
If the same position instead had a positive swap of $2.00 per night, the six swap days would add a $12 credit.
How to Include Swap in the Overall Trading Cost
Add the swap cost or credit to the spread and any commission to calculate the overall trading cost. Then compare that amount with the price movement you expect from the trade.
For positions held over several nights, including swap in your Forex trading rules can help you account for the full cost before opening the trade.
Which Forex Trading Strategies Are Most Affected by Swap Fees?
Swap matters more as the holding period gets longer. The strategies below are ordered from least to most exposed.
- Scalping and short-term trading: Positions usually last seconds or minutes and close before the daily rollover, so swap rarely affects the trade. Spread, commission and execution costs tend to matter more. Session-open approaches such as an opening range breakout or price gap trading strategies typically close well before rollover, so swap is usually not a factor.
- Day trading: Most positions are closed within the same trading session, so swap only becomes a factor when a trade remains open past the daily cutoff. Checking the types of Forex orders can help you manage entries and exits around your planned holding period.
- Swing trading: Positions can remain open for several days or weeks, so swap accumulates with each rollover. A trade with a small expected price target can give back a meaningful part of its return through overnight charges. Patterns that signal a potential reversal, such as the island reversal pattern, can help swing traders identify exit points before swap erodes the position further.
- Position trading: Positions may remain open for weeks or months, making cumulative swap a much larger part of the overall result. Depending on the position and currency pair, swap can become either a high cost or a source of additional income. Pairs such as AUD/JPY and USD/JPY can be affected by changes in the interest rate difference between the two currencies.
- Carry trading: Carry traders specifically seek to benefit from positive swap by holding a currency with a higher interest rate against one with a lower rate. Pairs such as AUD/JPY are commonly associated with carry strategies. However, exchange-rate movements can easily outweigh the interest earned, while changes in interest rates can reduce or reverse the swap advantage.
What Forex Overnight Swap Fees Does Taurex Charge?
Taurex may apply a swap charge or credit to positions held past the end of the trading day, typically around 21:00 GMT. Three days of swap may typically be applied on Wednesday to account for the weekend settlement period. Current swap rates are available on the trading platform and may change over time. Check the page on swap-free accounts for more details.
Some symbols may be excluded from the swap-free arrangement and may incur the applicable fee from the first day. Administration fees may also vary depending on the country of residence and instrument. When the Wednesday three-day swap applies, three days may be deducted from the available swap-free period at once.
Before holding any of the Forex pairs available at Taurex overnight, check the current long and short swap rates on the platform. This may give you a clearer picture of the potential cost or credit before opening the position.
If you want to explore Taurex’s trading conditions, you can open a demo account to review the available trading conditions before using real funds.
FAQ
What is a Forex overnight swap fee?
A Forex overnight swap fee is an interest charge or credit that can apply when you hold a position past the daily rollover. It generally reflects the interest rate difference between the two currencies in the pair, along with the broker’s financing terms.
How is a Forex overnight swap fee calculated?
If the swap rate is quoted in your account currency per lot, you can multiply the swap rate by the position size and number of applicable swap days. Use the long rate for buy positions and the short rate for sell positions. If the broker quotes swap in points, you may need to convert the rate into a monetary amount first.
When is a Forex overnight swap fee charged?
Swap can apply at the broker’s daily rollover, which at Taurex is typically around 21:00 GMT. Positions closed before the applicable rollover generally do not incur or receive swap for that rollover.
Can a Forex swap fee be positive?
A swap can be positive when the financing difference and broker terms result in a credit for the position. Broker markups and other financing conditions may reduce that credit or result in a charge instead.
What is a triple swap in Forex?
Triple swap means three days of swap may be applied at one rollover to account for the weekend settlement period. It typically falls on Wednesday for Forex positions at Taurex, although the applicable day can vary by broker and instrument.
Do overnight swap fees affect trading profits?
Overnight swaps can affect the result of a position held past rollover. A negative swap may reduce gains on a winning trade or increase the overall loss on a losing trade, with the total amount generally increasing the longer the position remains open.
How can I avoid overnight swap fees?
You may be able to close positions before rollover or use a swap-free account where available and eligible. Check the applicable swap-free period, excluded symbols and any administration fees before relying on this option.
Are overnight swap fees the same for every Forex broker?
No. Swap rates, financing terms, rollover times, triple-swap days and swap-free conditions can vary between brokers. When comparing brokers, it can help to learn how to choose a Forex broker based on the costs and conditions that apply to your trading.
