Hidden Trading Costs to Know

Trading fees explained properly means counting everything that moves the result of a trade away from the pure price change. Some costs are obvious lines on a statement; others are built into the price and only show up if you know where to look.

Costs you pay on entry and exit

The spread

The difference between the buy and sell price. On a currency pair it is measured in pips; on a share, in cents or pence. It is paid when you cross it, so a round trip costs one full spread. On one lot of a USD-quoted pair, every pip of spread is $10.

Commission

Some accounts charge a fixed amount per lot or a percentage of trade value, usually alongside a narrower spread. Commissions are often quoted "per side" or "round turn"; make sure you compare like with like.

Slippage

The difference between the price you expected and the price you got. It is common around data releases, at the open and whenever you use a market order in a thin market. Slippage can occasionally work in your favour, but a stop-loss that gaps is where it usually hurts.

Costs of holding a position

Leveraged positions held past the daily cut-off at 17:00 New York time pay, or occasionally receive, overnight financing (swap). The rate reflects the interest-rate difference between the two currencies plus the provider's markup. Because spot forex settles two business days after the trade, the Wednesday rollover usually carries three days of charges.

Illustrative example: a position with a financing charge of $6.50 per lot per night, held from Monday to Friday, crosses four rollovers (Monday, Tuesday, Wednesday, Thursday). Wednesday counts three times, so the total is (1 + 1 + 3 + 1) × $6.50 = $39.

When spreads widen

Advertised spreads are usually averages or minimums. Around the daily rollover at 17:00 New York time, at the Sunday open and in the seconds around major economic releases, spreads on currency pairs and gold can widen many times over. A stop-loss placed close to the market can be triggered by a wider spread alone, even if the mid-price barely moves. Checking the spread at the times you actually trade gives a truer picture of cost than any headline figure.

Crypto fees

Crypto platforms usually charge a percentage on each trade, often split into maker fees (for orders that add liquidity to the book, such as limit orders) and taker fees (for orders that fill immediately). A simple "buy" button may also include a wider spread. Withdrawing coins adds a network fee, which varies with congestion, plus any charge the platform sets.

Illustrative example: buying $2,000 of a coin with a 0.1% taker fee costs $2; selling it later for $2,200 at the same rate costs $2.20. The fees total $4.20, before any spread or withdrawal fee. Our crypto profit calculator applies a fee to both legs automatically.

Share dealing costs

Buying shares directly usually involves a commission per trade or a percentage of the trade value, the bid-ask spread on the exchange, and sometimes a platform or custody fee charged monthly or annually. Funds add an ongoing charge taken from the fund's assets. Buying foreign shares may bring a currency conversion fee on the way in and again on the way out. For an occasional investor, fixed platform fees can outweigh dealing charges; for a frequent trader, the reverse. The same cost-per-trade approach works: add up what one typical purchase and sale would cost you.

Charges outside the trade

• Currency conversion. Trading an asset priced in a currency other than your account currency can trigger a conversion markup on every profit and loss.
• Inactivity fees. Some providers charge a monthly fee after a period without trading.
• Deposit and withdrawal fees. Card, bank transfer and crypto methods can carry different charges.
• Data and platform fees. Real-time exchange data or advanced platforms are sometimes charged separately.
• Taxes on share purchases. Some countries levy a transaction tax on buying certain shares; the UK's stamp duty is one example.

Trading fees explained as a cost per trade

Once you know your cost per trade, compare it with your typical target. A strategy aiming for 10 pips on EUR/USD with a 1.5-pip total cost gives up 15% of every winning trade to costs before losses are counted. That arithmetic is why very short-term strategies are so sensitive to fees, as our price action guide shows for scalping.

Keep a cost log

Statements show each charge separately, which makes the total easy to miss. Recording spread, commission, financing and conversion for every trade in one place shows what trading actually costs you over a month, and whether a strategy's average gain is large enough to cover it. Many traders are surprised by how much of their result goes to costs once it is written down.

Where to find the real numbers

Regulated providers publish fee schedules, product information sheets and, in the EU and UK, key information documents that show costs. Averages are useful but hide variation; check the spread at the times you actually trade. For how fees fit into choosing a provider, see how to choose a broker.