Many beginners spend hours choosing an entry and setting a stop-loss, then never look at one of the costs that can steadily eat into a trade: overnight financing. If you trade with leverage through products such as contracts for difference or spread bets, holding a position past the end of the trading day usually comes with a charge. On a single night it looks tiny. Over weeks or months it can turn a decent trade into a poor one.
Why the charge exists
When you trade a leveraged product, you put down only a fraction of the position’s full value as margin. In effect, the provider is lending you the rest. Overnight financing is the interest on that loan. Our guides to leverage and CFDs explain how that structure works.
Providers typically calculate the charge from a benchmark interest rate plus their own fee. The charge is based on the full size of the position, not just the margin you deposited. That detail is what catches people out.
A simple example
Imagine you open a leveraged position worth £10,000 using £1,000 of your own money as margin. If the annual financing rate works out at, say, 7% once the provider’s fee is added, the yearly cost on £10,000 would be about £700. Spread across the days you hold it, that is roughly £1.90 a night.
That feels trivial. But hold the trade for three months and the cost is around £175, which is roughly 17% of the £1,000 you actually put in. The market has to move meaningfully in your favour simply to cover the financing before you make anything at all. The numbers here are illustrative, and real rates vary by provider and market, but the principle holds.
Why rates matter more now
When interest rates were close to zero, overnight financing was cheap and many traders forgot it existed. Rates have risen a long way since then. With central banks keeping borrowing costs high and talking about whether further rises are needed, the benchmark part of the charge is far bigger than it was a few years ago. A strategy that worked comfortably when money was nearly free can struggle once financing is included.
Long and short positions differ
Financing can work in either direction. Holding a leveraged long position usually means paying the charge. On a short position, you may receive a small credit if the benchmark rate is high enough to exceed the provider’s fee, but often the fee wipes most of it out and you still pay.
Currency trading has its own version, based on the interest rate difference between the two currencies in the pair. Holding the higher-yielding currency can sometimes earn a small amount, while holding the lower-yielding one costs money. This is the basis of the carry trade, but for many retail traders the provider’s fee makes the arithmetic less attractive than it first appears.
Weekends and holidays
Many providers charge three nights of financing on one day of the week to cover the weekend, because positions are still open even though the market is closed. Holiday periods can work similarly. A trader who does not know which day that happens can be surprised by a larger than expected charge.
How to avoid the mistake
Start by checking the financing rates on your platform before you open a trade, not after. Most providers publish them, and some show an estimated overnight cost on the order ticket.
Then match the product to the holding period. Leveraged products are often better suited to shorter-term trades. If you expect to hold a position for months, it is worth comparing the total financing cost with alternatives, such as owning the underlying shares or using a product with financing built in differently. Our guide to spread betting versus CFDs covers some of the differences.
Finally, include financing in your trade plan. When you calculate potential reward against risk, subtract the expected financing cost from the reward side. A trade that only works before costs is not really a good trade.
The takeaway
Overnight financing is the quiet cost of borrowing to trade. Small daily charges add up, especially when rates are high and positions are held for long periods. Checking and planning for it is one of the simplest ways to protect your returns.
If you want to understand which hidden costs and habits may be affecting your trading, our free trader assessment is a sensible place to start.
