How forex brokers actually make money, and why it explains their terms
Verdict
- The two dominant revenue sources are the spread (built into the price you trade at) and commission (a separate per-lot charge, mainly on Raw/ECN accounts) — most brokers use one, the other, or both depending on account type.
- Overnight swap and inactivity fees are smaller, secondary revenue lines that matter disproportionately to specific trader types: swap to anyone holding positions overnight, inactivity fees to dormant accounts.
- A minority of brokers, historically under a pure market-maker model, earn from client losses directly by taking the other side of trades — a structurally different, and now less common, revenue relationship than spread or commission.
- Understanding which revenue lines a specific broker actually relies on explains a surprising amount of its account terms — its stance on scalping, its swap-free structure, and which account type it steers different trader profiles toward.
- None of these revenue models is inherently dishonest — the point of understanding them is predicting a broker's incentives, not assuming bad faith.
A broker's revenue model is rarely stated plainly, but it explains more about its account terms than almost anything else on this site. Once you know how a specific broker actually earns, several otherwise-puzzling terms — a scalping restriction here, a swap-free exclusion there — stop looking arbitrary.
Spread: the default revenue line
The spread — the gap between bid and ask — is built into the price itself and is the most universal broker revenue source, present on every trade regardless of account type. On a Standard account with no separate commission, the spread is typically wider specifically because it is carrying the broker's entire per-trade revenue on its own, rather than sharing that role with a commission line.
Commission: revenue moved out of the spread and made explicit
On Raw or ECN accounts, brokers typically narrow the spread toward the underlying market rate and add a separate, explicit commission per lot instead. This does not reduce the broker's revenue — it relocates it to a transparent, itemised line, which is why comparing a Raw account's near-zero spread against a Standard account's wider one, without adding commission back in, understates the Raw account's real cost.
- Spread-only and spread-plus-commission are two ways of collecting broadly the same revenue, not one being cheaper by design than the other.
- A commission-based structure is generally more transparent about the exact cost per trade than a spread-only structure.
- The all-in cost, not the visibility of the fee, is what actually determines which structure is cheaper for your trading pattern.
Swap and inactivity fees: smaller, but structurally revealing
Overnight swap and inactivity fees are secondary revenue lines individually, but they explain specific account terms disproportionately. A broker's swap-free (Islamic) account structure — grace period length, per-lot admin fee, which instruments are excluded — is essentially a redesign of how it recovers swap revenue from a specific client segment without charging interest directly. Inactivity fees exist specifically to recover a minimum revenue from dormant accounts that generate no spread or commission activity at all.
The market-maker exception: earning from client losses
Under the classic market-maker model, a broker holding the other side of client trades internally can earn directly when a retained position loses, which is a structurally different relationship from spread or commission revenue — the broker's and client's interests are directly opposed on any trade the firm keeps on its own book. This model has become less common as direct market access has spread, but it still exists in parts of the industry, and it is one reason our ECN vs market maker guide treats the distinction as more than a technical footnote.
- A pure market-maker revenue relationship is structurally different from spread/commission — the broker benefits when a retained client position loses.
- This does not by itself mean price manipulation — regulated market makers remain bound by best-execution and conduct rules regardless of the model.
- It is one of the reasons scalping and high-frequency trading are more often restricted under market-maker terms than under ECN/STP terms.
Why this predicts specific account terms
Once you know a broker's actual revenue lines, several terms stop looking arbitrary: a restriction on scalping usually correlates with a market-maker revenue structure; a narrow swap-free grace period usually reflects how much overnight-holding revenue the broker is trying to preserve from that segment; an inactivity fee exists specifically because a dormant account produces none of the broker's other revenue at all. Reading terms through this lens explains far more than reading them as arbitrary rules.
How does a forex broker make money if the spread is nearly zero?
A near-zero spread almost always means the broker has moved its revenue to a separate, explicit commission per lot instead — commonly on Raw or ECN accounts. The broker's revenue does not disappear; it relocates to a different, itemised line.
Do brokers profit when I lose money?
It depends on the model. Under a classic market-maker structure, where the broker retains the other side of a trade internally, it can profit directly from a client's loss on that specific trade. Under ECN/STP execution, the broker routes to external liquidity and earns from spread or commission regardless of whether your trade wins or loses.
Why do some brokers restrict scalping?
Scalping and high-frequency trading interact directly with a market maker's own book in a way that can work against a dealing-desk revenue model, which is why restrictions correlate more with market-maker terms than with ECN/STP accounts built around direct market access.
Why does my broker charge an inactivity fee?
A dormant account generates no spread or commission revenue at all, so an inactivity fee exists specifically to recover some minimum revenue from accounts that otherwise contribute nothing to the broker's other revenue lines.