Overnight financing (swap) charges explained for EU forex traders
If you hold a forex position overnight, you pay — or occasionally receive — a financing charge called a swap. For traders who hold positions for days or weeks, these charges add up quietly and can turn a winning trade into a break-even one. This guide explains exactly what overnight financing is, how it is calculated, and how to compare brokers on swap cost — written for EU retail traders.
Last updated: July 2026 · CompareFX editorial team · EU/ESMA compliant · Educational information, not financial advice
What overnight financing actually is
When you trade forex through a broker, you are trading a leveraged product. You are effectively borrowing one currency to hold another. Holding that borrowed position overnight has a financing cost, in the same way that borrowing money from a bank has an interest cost. That cost is the overnight financing charge — most platforms label it the swap or rollover.
The charge is applied once per day at the broker's rollover time, usually 22:00 GMT (00:00 on most MetaTrader server clocks). If your position is open at that moment, a swap is applied to your account. If you opened and closed the trade the same day, you pay nothing. This is why intraday traders and scalpers never see swap charges — they are flat before rollover.
The one-sentence version
Swap is the daily interest cost of holding a leveraged currency position overnight. No overnight position, no swap.
Why the charge exists: the interest rate differential
Every currency has an interest rate set by its central bank. When you hold a currency pair, you are long one currency and short the other. The swap reflects the difference between the two interest rates, adjusted by the broker's own markup.
If the currency you are buying has a higher interest rate than the one you are selling, the differential can work in your favour (a positive swap, or credit). If it is lower, you pay (a negative swap). Because most brokers add a markup to both sides, many pairs show a negative swap whether you are long or short. Do not assume a positive swap exists — check the broker's swap table for the exact pair and direction.
// Simplified — each broker publishes swap in points or in account currency per lot
Example: long 1 lot, swap −7.0 points/day, ~$0.70 per point → −$4.90/day
Brokers publish swap either as a number of points, or directly as a cash amount per standard lot per night. Both appear in your platform's symbol specification and in your trade history as a separate line item, so the cost is fully visible if you look for it.
Triple swap: why Wednesday costs three times as much
Currency trades settle two business days after the trade date (the "T+2" convention). A position held into Thursday would settle on Saturday, when banks are closed, so settlement rolls forward to Monday. To cover those two weekend days of financing, brokers charge three days of swap on positions held over Wednesday night instead of one.
Plan around triple-swap Wednesday
If you hold a negative-swap position through Wednesday night, expect roughly three times the usual daily charge. Around public holidays the triple-swap day can shift to another weekday. Check your broker's swap calendar before holding a position across the mid-week rollover.
A worked example: how swap eats into a multi-day trade
Numbers make this concrete. Suppose you go long 1 standard lot of a pair with a negative swap of about −$4.90 per night, and you hold the position for ten calendar days that include one Wednesday.
Ten-day hold, one triple-swap Wednesday
Normal nights: 9 × −$4.90 = −$44.10
Triple-swap Wednesday: 3 × −$4.90 = −$14.70 (instead of −$4.90)
Total swap cost over the hold ≈ −$53.90
That is money your trade must overcome before it shows any profit — on top of the spread you already paid to enter.
For a scalper this is irrelevant. For a swing or position trader holding for weeks, swap can become one of the largest costs of the trade — sometimes larger than the spread. This is precisely the cost most beginners forget to include when they plan a trade.
What drives swap rates up or down
- Central bank interest rates. The wider the gap between the two currencies' rates, the larger the swap in one direction.
- Direction of your trade. Long and short on the same pair usually have different swap values — one may be less punishing than the other.
- Broker markup. Brokers add their own margin to the raw interbank rate, so the same pair can cost noticeably more at one broker than another.
- Pair volatility and demand. Exotic and high-yield pairs tend to carry much larger swaps than the major pairs.
- Account type. Swap-free (Islamic) accounts replace the swap with a flat administration fee.
Swap-free (Islamic) accounts
Several EU-regulated brokers offer swap-free or Islamic accounts, which comply with Sharia principles by not charging or paying rollover interest. In place of the swap, the broker typically charges a fixed administration fee once a position has been held beyond a set number of days (often after the first few nights). These accounts can suit longer-term traders who want predictable costs, but you should compare the administration fee carefully — for very long holds it is not always cheaper than a small negative swap.
How to compare brokers on overnight financing
Swap cost is a legitimate factor when choosing a broker, especially if you hold trades overnight. Here is a practical checklist:
- Find the live swap table. Every regulated broker publishes swap rates per pair — in the platform symbol specification or on their website. If a broker hides it, treat that as a warning.
- Compare the pairs you actually trade. A great swap on an exotic pair is meaningless if you only trade EUR/USD. Compare like for like.
- Check both directions. Note the long and short swap separately — one side may be far cheaper.
- Factor in the spread and commission too. A broker with a slightly worse swap but far tighter spreads may still be cheaper overall. Look at total cost, not one line.
- Confirm regulation first. Only compare brokers regulated in the EU (for example, CySEC) or an equivalent tier-one authority. Cost never outweighs the protection of proper regulation.
Rule of thumb
If you close every position before the daily rollover, swap is a non-issue and you can rank brokers purely on spread, commission, execution, and regulation. If you hold overnight, add swap to your total-cost comparison before you decide.