What Is a Spread in Forex? Definition and Real Costs

A spread is the difference between the bid price, at which you can sell, and the ask price, at which you can buy. It is what the broker charges for filling your order, and you pay it on every trade whether that trade wins or loses. On most retail accounts it is the largest single cost of trading and the only one that never appears as a line item on the statement.

How it works

If EUR/USD is quoted 1.08432 / 1.08442, the spread is 1.0 pip. You buy at the ask and sell at the bid, so the position opens showing a loss equal to the spread. The trade has to cover that distance before it is flat.

Spread (pips)   = (Ask − Bid) / Pip size
Cost per trade  = Spread (pips) × Pip value × Lots

On a standard lot of EUR/USD the pip value is $10, so a 1.0 pip spread costs $10 per lot, charged once on the round turn.

There are two ways brokers price it. Spread-only accounts widen the quote and charge nothing else — the cost is buried in your fill price. Raw spread plus commission accounts quote close to the interbank price and bill the difference separately. The total can be identical; only the second model makes the cost visible.

Spreads are either fixed (constant, usually wider, quoted by a dealing desk) or variable (tracking real liquidity). Variable spreads sit near zero on majors during the London–New York overlap and widen sharply at economic releases, in the thin hour around the daily rollover, and at the Sunday open. The widening happens precisely when your stop loss is most likely to be hit.

Why it matters

Spread scales with turnover, not with skill. A system targeting 5 pips per trade gives away 20% of its gross edge to a 1-pip spread; a system targeting 200 pips gives away 0.5%. That single ratio decides whether a strategy survives at one broker and dies at another while the logic stays identical.

It also compounds invisibly. The median account published on ShowMyTrades closes 171 trades. One extra pip of spread across 171 standard lots is $1,710 — money that never shows anywhere except as a slightly worse equity curve.

What the data shows

Across the public accounts on ShowMyTrades with trading history (August 2026), traders have paid $4,782,670 in commissions. That is only the visible half of execution cost: the spread portion cannot be totalled the same way, because it is priced into the fill rather than charged as a separate line.

Only one of the three arrives with a number attached to it.

The scale of that hidden half is easy to bound. Those accounts have traded 1,724,575 lots. On a $10-per-pip instrument, a difference of just 0.2 pips in average spread across that volume is roughly $3.4 million — more than two thirds of all commissions ever recorded on the platform.

And the conditions genuinely differ: those accounts connect through 703 distinct broker servers, and 429 users run accounts at more than one broker precisely to compare them.

Where you see it on ShowMyTrades

• Advanced Statistics shows Total Commissions, Total Lots and Total Pips. Divide the first by the second and you have that account's real commission per lot — a number brokers rarely publish in a comparable form.
• The most useful check is Total Pips against net profit. When an account is positive in pips but flat or negative in money, execution cost is consuming the edge. That gap is the spread and commission bill.
• The Closed Trades table under Trade History & Balance Progression carries a Commission column per ticket, alongside Open Price and Close Price, so you can see what an individual fill actually cost.
• The account header carries the broker badge, with the trade server name in its tooltip, next to the account currency and leverage. That is what makes two accounts running the same strategy comparable at all.

Common misunderstandings

1. "Zero spread" does not mean free. Zero- or raw-spread accounts move the cost into commission. Compare the total, not the headline.
2. The advertised spread is a best case. Brokers quote typical or minimum spreads measured in liquid hours. Your fills during a rate decision are a different number.
3. Spread is not on the statement, so people assume they are not paying it. It is deducted at entry, before the trade exists as a row.
4. Spread alone does not rank a broker. Swap and slippage belong in the same comparison, and a tight spread with poor execution is the more expensive deal.

To put real numbers on your own instrument and lot size, see the guide to forex calculators.

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