Spread in trading forex
Family X · Account mechanics
Not to be confused with spread, forex spread, good spread.
Spread in trading forex is the gap between the highest price a buyer will pay (bid) and the lowest price a seller will accept (ask) for a currency pair. It is quoted in pips or price terms and is the primary transaction cost for most retail forex trades. The spread is not a fee charged separately; it is embedded in the quoted prices.
How the spread is quoted and calculated
For most currency pairs, the spread is the numerical difference between the ask and the bid. In major pairs such as EUR/USD, it is typically expressed in pips, where one pip equals 0.0001 for most pairs and 0.01 for pairs quoted to two decimal places, such as USD/JPY. The formula is:
- Spread = Ask price − Bid price
For example, if EUR/USD is quoted with a bid of 1.1050 and an ask of 1.1052, the spread is 0.0002, or 2 pips. The spread may widen or narrow depending on liquidity, volatility, and the specific trading session. It is not a fixed number and varies by broker, instrument, and market conditions.
Worked example: cost of a round-trip trade
Assume a trader buys 1 standard lot (100,000 units) of EUR/USD at an ask of 1.1052 and later sells at a bid of 1.1052. The spread cost is calculated as follows:
The 20 USD represents the implicit cost of entering and exiting the position at the quoted prices, assuming no price movement. If the trader sells at the same bid at which they bought, the spread alone results in a 20 USD loss.
Factors that influence the spread
The spread in forex trading is not constant. It is influenced by:
- Liquidity: Major pairs such as EUR/USD and USD/JPY typically have tighter spreads than exotic pairs.
- Volatility: Spreads often widen during news releases, market opens, and periods of low liquidity.
- Broker model: Some brokers operate a dealing desk and set fixed spreads, while others use a straight-through processing model with variable spreads that reflect interbank rates.
- Time of day: Spreads tend to be narrowest when major financial centres overlap, such as the London–New York session.
Because these factors vary, the spread quoted for a given pair at a given moment is specific to the broker and the market conditions. Traders should check the live spread before executing an order.
Often confused with
- spread
- The general term 'spread' can refer to any bid-ask difference in any financial market, not only forex; the visible sign is the absence of a currency pair or forex context.
- forex spread
- 'Forex spread' is a broader label for the same concept, often used in headings or product descriptions, while 'spread in trading forex' emphasises the cost incurred when trading; the visible sign is the phrase 'in trading' indicating an active transaction.
- good spread
- A 'good spread' is a qualitative judgement about a spread being tight or favourable, whereas 'spread in trading forex' is the neutral measurement itself; the visible sign is the evaluative word 'good'.