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What Is the Forex Spread — and What It Actually Costs

Marco Stavros··9 min read
Forex trading chart analysis — understanding what the spread in forex actually costs

Photo by Rafael Minguet Delgado on Pexels

The spread in forex is one of those things that everyone knows about and almost nobody has done the actual maths on. It sits there in the broker’s platform, listed in pips, looking entirely harmless. Three pips. How bad can three pips be? Quietly, methodically, three pips per trade is how your account goes from fine to slightly less fine to genuinely wondering what happened.

I spent a genuinely embarrassing amount of time blaming my entries before I sat down and calculated this. The entries were fine. The spread was taking a cut from every single one — before the trade had moved a pip in my favour.

This post covers what the forex spread actually is, how the maths compounds over a year of trading, and — the part most explanations skip — why spread widens at the moments retail traders are most likely to be entering the market.

The short answer

The spread in forex is the difference between the bid (the price you can sell) and the ask (the price you can buy). Every trade you place starts behind the market by the spread amount — typically 0.5 to 2 pips on major pairs during normal conditions. Over 200 trades in a year, a consistent 1.5-pip spread on EUR/USD at standard lot size costs approximately £2,400 in spread alone. Most traders know the spread exists. Very few have run this number.

What the Forex Spread Actually Is

When you open a chart and see a quoted price for EUR/USD, you are not actually seeing one price. You are seeing two. The bid price is what your broker will pay to buy the currency from you. The ask price is what you will pay to buy it from them. The spread is the gap between these two numbers.

If EUR/USD is quoted as 1.0850 bid / 1.0852 ask, the spread is 2 pips. You cannot buy at the bid and sell at the ask simultaneously — the spread is the cost you absorb on entry. The moment you open a position, you are already down by the spread before the market has moved a single pip.

This is not a scam or a hidden trick. It is simply how the market works. Brokers earn revenue through the spread rather than charging explicit commissions — or they earn both, in the case of ECN accounts. The spread is the price of access. What matters is how large that price is, when it changes, and what it adds up to over time.

Spreads come in two forms:

  • Fixed spreads — the broker guarantees the same spread at all times, regardless of market conditions. This predictability comes at a cost: fixed spreads are typically higher on average than variable spreads during normal conditions.
  • Variable (floating) spreads — the spread changes in real time based on available liquidity. During active trading sessions on major pairs, variable spreads can be very tight. During low-liquidity periods, they can widen significantly. Variable spreads are available with most retail forex brokers. They have a lot in common, in practice, with my wife’s opinions on my Nickelback collection — unpredictable, significantly louder than expected at the worst possible moment, and I have no say in the matter.
Stock market data screen showing bid and ask prices — the spread in forex visualised

Photo by Alex Luna on Pexels

The Maths Nobody Runs

The reason spread damage is invisible to most retail traders is that it never appears as a loss. It is absorbed at entry. When a trade closes at breakeven, it actually closed at a loss equal to the spread. When a trade closes at a 3-pip gain with a 2-pip spread, the real net is 1 pip. Most P&L screens show the gross result, not the net-of-spread result. The spread becomes background noise — until you calculate the annual total.

The maths does not require trusting me. It requires a calculator and your broker’s average spread figure on your most-traded pair.

A worked example: EUR/USD, average spread of 1.5 pips, 200 trades in a year, mini lots (10,000 units). One pip on a EUR/USD mini lot at 1.0850 is approximately £0.92. A 1.5-pip spread costs £1.38 per trade. Across 200 trades, that is £276 per year — on a mini lot, from spread alone.

Scale that to standard lots (100,000 units), the same calculation produces approximately £2,760 in spread cost per year before any losses, commissions, or swap fees. A £10,000 account trading standard lots is paying close to 28% of its capital in spread annually — without a single losing trade. That is before the account is actually wrong about direction.

This is not the whole picture, because risk management determines position size and the 200-trade figure varies by trader. But the order of magnitude is the point. The spread is not a rounding error. It is a structural headwind that every trade works against. If your account is bleeding slowly and you cannot work out why, the spread maths is the first calculation to run — not a strategy review.

The spread also changes your effective risk-reward ratio before the trade has done anything. A trade targeting a 10-pip gain with a 5-pip stop and a 2-pip spread has an effective RR of 8:5, not 10:5. The spread does not appear in the setup. It silently reduces the ratio. This is one of the structural reasons retail traders lose more consistently than their analysis suggests they should.

Why the Spread Widens at the Worst Moments

Variable spreads do not widen at random. They follow a predictable pattern tied to liquidity conditions, and that pattern is not difficult to read once you know what to look for.

Spread is a function of available liquidity. When many participants are actively quoting prices on both sides of a market — buying and selling — competition between them keeps the spread tight. When fewer participants are quoting, the remaining ones can ask for a wider margin. This is simple supply and demand applied to market-making.

The practical result:

  • London-New York overlap (13:00–17:00 GMT): Highest liquidity period for most major pairs. Spreads are at their tightest. The largest volume of institutional and retail participants are active simultaneously.
  • Asian session: Lower volume for EUR and GBP pairs. Spreads typically wider than the London session. USD/JPY and AUD/USD are the exception — they are more actively traded in the Asian session.
  • Session transitions (Tokyo close / London open, around 07:00–08:00 GMT): Spread often spikes as one liquidity pool hands off to another. This is one of the more common periods for stop hunts because price can move quickly with less liquidity to absorb the move.
  • High-impact news releases: Spread can multiply to 5–10 times normal in the seconds before and after a major data release. A pair that normally shows 1 pip can show 10–15 pips for a brief window. Anyone entering immediately before or after a major release is paying a significantly elevated entry cost.
  • After-hours and public holidays: Illiquid conditions produce wide spreads across all pairs.

The pattern is consistent enough that knowing it changes when you trade. The spread is not random noise. It is structural information about where liquidity exists at any given moment.

Forex trading setup showing market conditions — spread widening during low liquidity periods

Photo by Alesia Kozik on Pexels

The Institutional Side of Spread

Here is the part that most spread explanations do not reach.

The BIS forex volume data shows $7.5 trillion in daily forex turnover. The majority of this volume is generated by institutional participants — banks, hedge funds, and major liquidity providers. These participants are on the other side of most retail trades. They are not passive. They manage their exposure actively, and one of the ways they manage it is through the spread they quote.

When institutional liquidity providers sense increased directional risk — around news events, during rapid price moves, at session transitions — they widen their spreads. This is not punitive. It is a risk management response. The wider spread compensates them for the uncertainty of holding inventory when the market is unpredictable.

The consequence for retail traders: the spread is widest at precisely the moments when retail traders are most active and most likely to be entering the market. News events attract retail attention. Session opens attract retail attention. The same moments that produce the setups most retail traders have been trained to trade are the moments when institutional liquidity is thinnest and the entry cost is highest.

The basic spread definition is available everywhere. What the YouTube tutorials skip is the timing mechanism: retail entries fire into maximum spread, at moments when institutional participants have withdrawn their tightest quotes. The trade that looks cleanest on the chart often carries the highest entry cost.

This is the same structural dynamic that drives liquidity sweeps and stop-hunt moves. The market does not move against retail traders out of malice. It moves according to where liquidity is and is not — and the spread is one of the most visible signals of that liquidity state.

What a Good Forex Spread Actually Looks Like

For major currency pairs during active trading sessions, a competitive spread looks like:

  • EUR/USD: 0.1–1.0 pips (ECN), 0.6–1.5 pips (standard retail)
  • GBP/USD: 0.5–1.5 pips (ECN), 1.0–2.0 pips (standard retail)
  • USD/JPY: 0.2–1.0 pips (ECN), 0.7–1.5 pips (standard retail)
  • Minor pairs (EUR/GBP, AUD/USD): 1.0–3.0 pips typical
  • Exotic pairs (USD/ZAR, EUR/TRY): 10–50+ pips — the spread alone can exceed many retail traders’ full target profit on a trade

Spreads above 2 pips on a major pair during the London or New York session suggest either a high-markup broker or adverse market conditions. If your broker consistently shows 3+ pips on EUR/USD during active hours, the broker itself is part of the cost structure problem.

ECN accounts pass through near-raw spreads (sometimes 0.0–0.1 pips on EUR/USD) but charge an explicit commission per trade, typically $3–$7 per standard lot roundtrip. Whether ECN is cheaper than a spread-markup account depends on your trade frequency and position size. High-frequency traders typically benefit from ECN. Low-frequency traders may find the maths closer.

When Not to Trade Because of Spread

There is a straightforward list of situations where the spread cost is high enough to make a trade unviable regardless of how good the setup looks:

  • In the 5 minutes before and after any high-impact news release. The spread can be 5–15 times normal. The trade has to overcome this immediately on entry. Even if the trade direction is correct, the spread cost alone may eat the expected profit.
  • During session transitions when your traded pair is switching liquidity pools. The Tokyo-London transition (roughly 07:00–08:30 GMT) and the New York close (22:00 GMT) are the two most common periods for elevated spreads on EUR and GBP pairs.
  • When trading exotic pairs with spreads above 15 pips. This is not necessarily a rule — but any trade with a target of 20 pips and a 15-pip spread needs to win by 35 pips net to return 20 pips net. This is a structural headwind worth being honest about before entry.
  • Whenever your broker shows a spread that looks unusual for normal conditions. Abnormally wide spread is a signal, not just a cost. It means liquidity has withdrawn. A market without liquidity is a market you cannot predict.

The FCA’s retail CFD disclosure data consistently shows 70–82% of retail accounts lose money. The spread is not the only reason — but it is a persistent, compounding contributor that the profitability statistics absorb silently. Understanding the trading system you operate within means understanding the spread as a structural cost, not a background detail.

Frequently Asked Questions

What is the spread in forex?

The spread in forex is the difference between the bid (the price you can sell) and the ask (the price you can buy). If EUR/USD is quoted as 1.0850 / 1.0852, the spread is 2 pips. Every time you enter a trade, you start behind the market by the spread amount — it is the immediate, built-in cost of the position before price has moved in any direction.

What is a good spread in forex?

For major pairs like EUR/USD, GBP/USD, and USD/JPY, a spread of 0.5 to 1.5 pips is generally competitive during normal trading hours. Spreads above 2 pips on a major pair suggest either a high-markup broker or adverse conditions. For minor and exotic pairs, wider spreads are standard. As important as the quoted figure is the timing — spreads can temporarily widen to 5–10 times normal during news releases and session transitions.

How is the forex spread calculated?

The forex spread is calculated by subtracting the bid price from the ask price. If GBP/USD is quoted at 1.2700 bid and 1.2703 ask, the spread is 3 pips. In monetary terms, a 3-pip spread on a standard lot (100,000 units) with GBP/USD near 1.27 costs approximately £23–24 per trade. On a mini lot (10,000 units), the same spread costs approximately £2.30–2.40.

Why does the forex spread widen?

The forex spread widens when liquidity decreases. Liquidity providers widen their spreads to compensate for the increased risk of holding inventory when the market is uncertain or illiquid. This occurs during news releases, session transitions, public holidays, and after-hours trading. During these periods, spreads can temporarily multiply to several times their normal size.

What is the difference between fixed and variable spreads in forex?

A fixed spread stays constant regardless of market conditions. A variable (floating) spread changes in real time based on available liquidity — tighter during active sessions, wider during low-liquidity periods. Most retail forex brokers offer variable spreads. Fixed spreads are more predictable but are typically higher on average, since the broker absorbs the widening risk themselves.

Does the spread affect my stop loss in forex?

Yes, directly. The spread reduces your effective stop distance from the moment you enter. If you set a stop 10 pips below entry on a buy trade with a 2-pip spread, your position only needs to move 8 pips against you for the stop to trigger — because you started 2 pips behind at entry. This is one reason trades entered during high-spread periods have a noticeably higher stop-hit rate.

How do I reduce my spread costs in forex?

The most practical steps are: choose an ECN broker over a market-maker where trade frequency justifies the commission; avoid trading immediately before and after high-impact news; trade major pairs only; and reduce trade frequency where the setup does not clearly justify the entry cost. Every trade pays the spread regardless of outcome — frequency compounds the cost.

About the author

Marco Stavros has traded forex from London since 2009. He calculated his annual spread cost once, in 2019. He has not stopped grumbling about it. His apprentice found the number genuinely upsetting. They are both fine. Probably.

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