What Are Overnight Swap Fees and How to Minimise Them?

Overnight swap fees, also called rollover or overnight financing fees, are charges or credits applied when a leveraged forex or CFD position remains open past a broker's daily rollover time. The amount depends on the instrument, trade direction, position size, interest rate conditions and the broker's pricing model. The simplest way to minimise swap costs is to check the long and short swap before entering a trade, understand the rollover schedule, control position size and avoid holding positions overnight when doing so is not part of your strategy.

Forex is a huge market. Final data from the Bank for International Settlements shows global OTC foreign exchange turnover averaged about $9.5 trillion per day in April 2025, 27% higher than in 2022.

Yet one trading cost is easy to overlook because it normally appears after the trade has already been opened: the overnight swap fee.

When I explain swap costs, I prefer to think of them as a holding cost rather than an entry cost. The spread matters when you enter and exit. Swap matters when time becomes part of the trade.

What are CFD overnight fees?

CFD overnight fees are financing adjustments applied when a CFD position stays open beyond the provider's daily cutoff.

Because CFDs are generally leveraged products, the trader deposits only part of the total market exposure as margin. The remaining exposure has a financing component. When the position is carried overnight, that financing can result in a charge or, in some cases, a credit.

For shares, indices and several other cash CFD markets, providers commonly calculate overnight financing using a relevant interest rate benchmark plus or minus their own financing margin. Forex and spot metals are often handled differently, using the tom next rate.

Tom next means "tomorrow next." It represents the market adjustment involved in rolling a forex position from one settlement date to the next.

A useful line from IG's current explanation is:

"Tom-next is the day's market swap rate for that pair or metal."

That is why there is no single universal swap fee for EUR/USD, GBP/USD, gold or an index. Rates can differ by provider, instrument, direction and day.

A simple CFD example

Imagine a trader has $50,000 of CFD exposure and, purely for illustration, the applicable annual financing rate works out to 6.5%.

A simplified one day estimate would be:

$50,000 × 6.5% ÷ 365 = approximately $8.90

If the position remains open for ten chargeable days and the rate does not change, that would be about $89.

This is only an example. Real calculations vary because brokers use different benchmarks, margins, day count conventions and rollover rules.

Why do brokers charge swap fees?

The main reason is financing.

A leveraged trade gives you market exposure that is larger than the margin placed on the account. Keeping that exposure open has a financing cost.

In forex there is another layer. Every currency pair contains two currencies, and those currencies operate in different interest rate environments. The overnight adjustment therefore reflects factors such as the relative funding rates of the two currencies, the tom next market rate and the broker's own charge.

This matters particularly in 2026 because global interest rates are still meaningfully different.

• On 16 September 2026, the US Federal Reserve raised its target range to 3.75% to 4.00%.
• The Bank of England kept Bank Rate at 3.75% on 17 September 2026.
• The European Central Bank raised its deposit facility rate to 2.50%, effective 16 September 2026.

These policy rates are not the same thing as the swap rate shown on your trading platform, but they illustrate why financing conditions can differ materially between currencies.

Researchers Wenqian Huang, Ingomar Krohn and Vladyslav Sushko noted in BIS research that:

"FX hedging costs rose substantially during the post-pandemic global monetary tightening cycle."

For a trader, the practical lesson is simple: interest rates are not only economic news. They can also influence the cost of keeping certain positions open.

How is an overnight swap calculated?

There is no single formula used by every broker.

For forex, one common structure is based on:

Position size × applicable tom next or swap rate × provider adjustment

Some platforms quote swap directly in points per lot. Others show the estimated monetary charge in the instrument specifications.

For other cash CFDs, financing may be based on:

Position value × annual financing rate ÷ 360 or 365

The safest approach is not to calculate from assumptions. Check the actual Swap Long and Swap Short values in the contract specification before opening a position.

Example of a forex swap

Suppose a broker currently shows:

• Long swap on EUR/USD: minus $6.50 per lot per night

A trader holds one standard lot through one rollover.

The illustrative cost is: $6.50

If that broker applies a three day rollover on Wednesday, the same unchanged rate could produce: $19.50

That does not mean Wednesday trading itself costs three times more. It is generally an adjustment designed to account for non trading settlement days over the weekend.

For example, IG currently states that forex positions held through its Wednesday rollover receive three days of funding because of the FX settlement cycle.

Exact rollover days can differ by asset and provider, particularly around public holidays.

Why can swap be positive or negative?

A swap is not automatically a fee in every case.

Depending on the instrument, direction, underlying financing rate and provider terms, an account may receive a credit instead of paying a charge.

However, traders should never assume that buying the currency with the higher policy rate guarantees positive swap.

The broker's adjustment, tom next pricing, market conditions and the exact long or short specification can change the final value. Some instruments may even show negative financing on both directions after provider charges are included.

Always check the live contract specification.

How do you avoid paying swap fees?

You cannot remove the economics of overnight financing simply by ignoring them, but you can manage the cost more deliberately.

1. Check swap before entering the position. Treat Swap Long and Swap Short as part of your trade cost, just as you would check the spread or commission.

2. Know the rollover time. If an intraday strategy does not require overnight exposure, closing before the provider's rollover cutoff can avoid that overnight charge. Do not close a valid trade purely to save a small fee without considering market risk and your strategy.

3. Watch three day rollover. Many forex providers apply three days of funding around Wednesday to account for weekend settlement. Other asset classes may use different schedules.

4. Reduce unnecessary position size. Financing costs normally increase with exposure. A position twice as large will generally create a larger financing adjustment when the other variables are unchanged.

5. Include swap in longer term planning. For a position expected to remain open for several weeks, calculate an estimated holding cost before entering. A setup that appears attractive before financing may look different once cumulative costs are included.

6. Compare cash CFDs with suitable alternatives. Some futures based products do not receive a separate daily overnight financing charge because financing is reflected in the contract pricing instead. That does not make them free of costs, and suitability depends on the product.

7. Understand swap free account conditions. Some providers offer swap free arrangements to eligible clients, but "swap free" should not automatically be read as "cost free." Conditions or alternative administration charges may apply depending on the provider.

The mistake I would avoid

The biggest mistake is judging a trade only by its entry price and visible spread.

Consider a position that earns $150 from market movement but accumulates $70 in financing costs while being held. Before other charges, its economic result is closer to $80 than $150.

That distinction becomes more important as the holding period grows.

Swap is usually less important to someone who opens and closes trades within the same trading day. It can become much more relevant for swing positions held for days or weeks.

Are overnight fees the same as spreads?

No.

• A spread is the difference between the buy and sell price.
• An overnight fee is a financing adjustment associated with carrying an eligible position beyond the rollover time.
• A commission is a separate transaction charge that may apply when opening or closing certain products or account types.

A trader can therefore face more than one type of cost on the same position.

FAQs

What time are overnight swap fees charged?

There is no universal cutoff. Many forex platforms use a rollover around the New York trading day close, but the exact server time and calculation method depend on the broker. Check the provider's contract specification rather than assuming a fixed time.

Are swap fees charged every night?

They are normally applied when an eligible position passes the rollover cutoff. Weekend settlement may be reflected through a multiple day adjustment on a particular weekday rather than separate Saturday and Sunday charges.

Can overnight swap rates change?

Yes. Swap rates can change as market interest rates, tom next pricing, liquidity conditions and provider charges change. FxPro, for example, states that its swap rates are reviewed regularly.

Does a swap free account mean no holding costs?

Not necessarily. Some providers may apply different fees or conditions. Always read the account terms before assuming that an overnight position carries no financing related cost.

Final takeaway

Overnight swap fees are easiest to manage when they are treated as part of the trade before the position is opened.

Check the swap rate. Check the rollover day. Estimate the cost over your expected holding period. Then decide whether that cost fits the strategy.

In a market where interest rates still differ substantially across major economies in September 2026, overnight financing deserves the same attention as spreads, commissions and position size.

Disclaimer

This article is for educational and informational purposes only and does not constitute investment, financial or trading advice. CFDs and leveraged forex products are complex and carry a high risk of rapid losses. Fees, swap rates, rollover times and product availability vary between providers and jurisdictions. Always review the applicable product specifications, costs and risk disclosures before trading.