Forex brokers make money mainly from the cost built into every trade: the spread, the commission and the overnight swap. Some also earn from fees outside trading and, depending on how they handle client orders, from the trading results of positions they keep. This guide breaks down each revenue source with worked numbers, so you can see what a broker earns from your trading and which costs you can control.
The Main Ways Forex Brokers Earn Revenue
A forex broker's revenue comes from five sources. The first three are trading costs: the spread, the commission and the swap. The fourth is non-trading fees, such as currency conversion or inactivity charges. The fifth applies only to brokers that keep some client positions on their own books: the net result of those positions.
Not every broker uses every source. Some charge no commission and earn everything through the spread. Some charge no deposit or withdrawal fees. Understanding which sources a broker relies on tells you where your own costs will come from.
All of these are legitimate when disclosed clearly. The point of knowing them is to compare brokers on the full cost, not just the headline spread.
How Brokers Earn From the Spread
The spread is the difference between the buy price and the sell price, and it is the most visible way forex brokers make money. A broker receives prices from its liquidity providers, then shows clients a spread that is either the same or wider. Any widening is the broker's markup.
On a commission-free account, the markup is the broker's main trading revenue. If the underlying market spread on EURUSD is 0.2 pips and the broker shows 1.2 pips, the broker earns about 1.0 pip on each round trip. On one standard lot of EURUSD, one pip is worth $10, so that markup is worth about $10 per lot.
Clients pay the spread whether a trade wins or loses. It is charged at the moment the position opens, which is why a new trade always shows a small loss before the price has moved.
How Commission-Based Accounts Generate Revenue
On a commission-based account, the broker shows a spread close to the raw market price and charges a separate fee per lot. Commission is usually quoted per side or per round trip. A $7 round-trip commission is the same as $3.50 charged when the trade opens and $3.50 when it closes.
Commission accounts make the broker's revenue easier to see. The client knows exactly what the broker earns per lot, and the spread reflects market conditions rather than a markup. Some brokers combine a small markup with a commission, so check whether the "raw" spread really is raw.
Worked Example: Revenue From One Active Client
Take a client who trades 20 standard lots of EURUSD a month. On a commission-free account with a 1.0 pip markup, the broker earns about 20 × $10 = $200 a month from that client.
On a commission-based account with no markup and a $7 round-trip commission, the broker earns 20 × $7 = $140 a month. The client pays less on the commission account, and the broker earns less per lot. Brokers offer both because different traders prefer different structures, and lower-cost accounts often attract higher-volume clients.
How Brokers Earn From Overnight Swaps
A swap is the interest adjustment applied to a forex position held past the daily rollover. Every currency pair involves holding one currency and borrowing another, and the two currencies carry different interest rates. The rollover in foreign exchange reflects that interest rate difference, and the broker adds a markup on top.
The markup is where brokers earn. The theoretical swap is set by the interest rate differential between the two currencies. The broker charges slightly more to clients who pay swaps and credits slightly less to clients who receive them.
Worked Example: How a Swap Markup Works
Here is an illustration using assumed interest rates. Suppose the euro interest rate is 2% and the US dollar rate is 4%. A trader long one lot of EURUSD at 1.0850 holds €100,000 and owes about $108,500. The trader earns 2% on the euros and pays 4% on the dollars, a net cost of about 2% a year, or roughly $5.95 a night.
A short position should, in theory, earn the same $5.95 a night. Now add a broker markup of 0.5% a year to each side. The long position pays 2.5%, or about $7.43 a night, while the short position receives 1.5%, or about $4.46 a night. The broker keeps the difference on each side.
A Simple Swap Test Any Trader Can Run
This example points to a practical check. In theory, the long swap and the short swap on a currency pair should roughly cancel out, because one side's cost is the other side's credit. The further their sum falls below zero, the larger the broker's swap markup.
Open the symbol specification in your trading platform and compare the long and short swaps on the pairs you hold overnight. Compare the same pairs at two or three brokers. For a trader who holds positions for weeks, this comparison can matter more than a difference in spreads.
How Swap-Free Accounts Change Broker Revenue
Swap-free accounts remove overnight swap charges and credits, usually for traders who cannot pay or receive interest. The broker still has funding costs, so it recovers them in other ways. Common methods include a wider spread, a fixed fee after a set number of days or lower maximum leverage.
For the trader, the right comparison is the extra cost of the swap-free account against the swaps they would otherwise pay. A trader who holds positions for many days often pays less on a swap-free account. A trader who closes every position within the day pays more, because the wider spread applies to every trade.
Non-Trading Fees Forex Brokers Charge Outside of Trading
Some forex brokers earn revenue outside trading. The most common non-trading fees are currency conversion fees, inactivity fees and charges on deposits or withdrawals.
Currency conversion fees apply when you deposit in one currency and your account is held in another, or when you trade instruments priced in a currency different from your account currency. Brokers often add a percentage markup to the exchange rate. On frequent conversions, that markup can cost more than the trading itself.
Inactivity fees are charged when an account has no trading for a set period, often several months. Deposit and withdrawal fees vary widely: some brokers charge for card or bank transfers, while others absorb the cost entirely. Always read the fee schedule, because these charges rarely appear in spread comparisons.
Worked Example: The Cost of a Currency Conversion Markup
Suppose a trader deposits €5,000 into an account held in US dollars, and the broker adds a 1% markup to the exchange rate. The conversion costs about €50 before the trader places a single trade. Withdrawing the balance later, with another conversion, costs about the same again.
That €100 round trip is equal to the spread markup on roughly ten standard lots of EURUSD on a typical commission-free account. Holding your account in the same currency as your deposits avoids the charge entirely.
Interest Earned on Client Balances
Some brokers also earn interest on the cash clients hold in their accounts. Client money is typically kept in segregated bank accounts, and in periods of higher interest rates, the interest on those balances can be meaningful revenue. Brokers in some markets pass part of it to clients, while others keep it all.
How Risk Models Affect How a Broker Makes Money
The way a broker handles client orders adds one more revenue source for some brokers. A broker that passes client risk to outside liquidity providers, known as A-book handling, earns only from spreads, commissions, swaps and fees. Its revenue depends on how much clients trade, not on whether they win or lose.
A broker that keeps client positions on its own books, known as B-book handling, also earns or loses the net result of those positions. If clients lose overall, the broker gains. If they win, the broker pays. Many brokers use a hybrid of the two, keeping some exposure and hedging the rest according to their risk rules.
Keeping risk in-house is legal and common among regulated brokers, but it creates a conflict of interest that the broker must manage. A broker's order execution policy explains the capacity in which it acts and how it handles conflicts, which is the best source for understanding how a specific broker treats your orders.
What It Costs to Run a Forex Brokerage
A broker's revenue is not its profit. Running a brokerage involves heavy fixed and variable costs, and those costs shape how brokers price their accounts.
Technology is a major expense: platform licenses such as MetaTrader 5, servers, price feeds, bridges and risk management systems. Liquidity carries a cost too, through the spreads and fees charged by liquidity providers. Regulation brings capital requirements, audits, compliance staff and reporting.
Client acquisition is often the largest cost of all. Marketing, affiliate payments and introducing broker commissions can absorb a large share of revenue. When a broker pays a partner a commission per lot, that payment comes out of the spread, commission or swap revenue the client generates.
Why Zero-Commission and Zero-Fee Offers Are Not Free
A broker advertising zero commission is not working for free. Its revenue sits in the spread instead. A broker advertising zero deposit and withdrawal fees has chosen to absorb those costs and recover them through trading revenue.
None of this makes such offers misleading. It simply means the right comparison is always the total cost of your trading pattern: spread or commission per lot, swaps on positions held overnight and any non-trading fees that apply to you. Two brokers with very different headline offers can end up costing the same for the same trader.
Leverage does not change the cost per lot, but it changes how many lots a small account can trade. Higher leverage lets traders open larger positions, which means larger spread and commission costs in dollars. Leverage magnifies losses as well as gains, and trading costs add to those losses on every trade.
How Broker Revenue Differs Across CFD Markets
Brokers earn in the same basic ways on CFDs beyond forex, but the details change by market. Index CFDs usually carry a spread and an overnight financing charge based on a benchmark interest rate plus a markup. Share CFDs may charge a commission per trade or per share, plus financing on positions held overnight.
Crypto CFD trading typically involves wider spreads than major forex pairs, reflecting the higher volatility of the underlying coins, along with overnight financing on positions held past the daily cut-off. Because crypto markets trade every day of the week, financing applies on weekends too. Before trading any CFD market, check its spread, its overnight financing rate and any commission in the symbol specification.
How Tradin Structures Pricing on Its Trading Accounts
Tradin is an online forex and CFD broker regulated by the Financial Services Commission of Mauritius under Investment Dealer Licence GB25204266. Its three account types show the two pricing structures covered earlier, with costs either built into the spread or charged as a separate commission.
The Standard account has spreads from 1.0 pips and no commission, so its pricing sits in the spread. The Raw account has spreads from 0.0 pips plus a $7 commission, so its pricing sits mainly in the commission. The Swap-Free account has spreads from 1.5 pips with no commission and no overnight swaps. Tradin advertises deposits and withdrawals with $0 fees, and its markets include forex, indices, commodities, metals, shares and crypto CFD trading around the clock.
If you are new to the market and want the basics before comparing costs, Tradin's guide to what is forex covers how currency pairs are quoted and traded. When you compare brokers, add up spread, commission, swaps and fees for your own trading pattern, then choose the best forex broker for that pattern based on the total. Forex and CFD trading carries a high risk of losing money, so only trade with funds you can afford to lose.