How Forex Brokers Make Money
A clear breakdown of how forex brokers actually earn revenue -- spreads, commissions, overnight charges and other fees -- regardless of execution model.
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Trading forex and CFDs is usually marketed as free of upfront fees, with no entry charge and no annual account cost. That does not mean the broker is operating for free — it means the revenue is built into the trading itself, in ways that are not always obvious at first glance. Understanding where that revenue actually comes from helps you read a broker’s pricing honestly.
The spread
The spread is the gap between the price at which you can buy an instrument and the price at which you can sell it at the same moment. Even when a broker advertises “zero commission,” it is still typically earning revenue through the spread, either by marking up the price it receives from its own liquidity providers or by setting its own prices as the counterparty to your trade. A wider spread means a larger built-in cost on every single trade, so comparing spreads across brokers for the instruments you actually trade is one of the most direct ways to compare real costs.
Commissions
Some account types charge a separate, explicit commission per trade, usually on top of a much tighter spread than a commission-free account would offer. This model is common on accounts that pass orders more directly to external liquidity providers. Whether a spread-only account or a commission-plus-tighter-spread account works out cheaper depends on your trade size and how often you trade, which is why it is worth comparing the combined cost rather than judging either structure in isolation.
Overnight financing (swap) charges
If you hold a leveraged position open overnight, most brokers apply a financing charge (sometimes called a swap or rollover fee) that reflects, among other things, the interest rate differential between the two currencies in the pair and the broker’s own financing costs. This can work in your favour or against you depending on the direction of your trade and the pair involved, but it is a real and recurring cost for anyone who holds positions open for more than a single trading day.
Other fees
Beyond spreads, commissions and swaps, many brokers charge for specific account activity: inactivity fees if an account sits dormant for a defined period, withdrawal fees on certain payment methods, or currency conversion charges if you deposit, withdraw, or trade in a currency different from your account’s base currency. These are usually smaller than spread and commission costs individually, but they add up, particularly for infrequent traders or those moving money in and out often.
Dealing-desk vs no-dealing-desk revenue
How a broker is compensated can also depend on its execution model. A broker that takes the other side of your trade internally earns (or loses) on the difference between your result and its own risk management, on top of or instead of charging a spread markup. A broker that routes your order out to external liquidity providers typically earns through a markup on the price it receives or a separate commission, rather than by taking a position against you. Neither model is automatically better or worse for a trader; what matters is transparency about which model a given broker actually uses and what it costs you in practice.
Payment for order flow and other less visible arrangements
In some models, a broker may also receive payment or incentives from the liquidity providers or market makers it routes orders to, which is a further, less visible way revenue can be generated from your trading activity without appearing as a separate line-item fee. This is more common in certain jurisdictions and account types than others, and it is a good reason to read a broker’s order execution policy rather than assuming the only costs are the ones explicitly listed on a pricing page.
Reading the total cost, not just the headline
Because revenue can come from several of these sources at once, a broker advertising a strikingly low number in one category is not necessarily cheaper overall. The only reliable way to compare brokers is to add up the spread, commission, swap and incidental fees for the way you actually intend to trade, rather than taking any single advertised figure at face value.