What Is a Broker in Forex? How Forex Brokers Work

A broker in forex is the firm that holds your trading account, gives you a platform and live prices, and fills your buy and sell orders. It keeps each trade’s risk or passes it to liquidity providers such as banks, earns mainly from the spread, commission and swap, and must follow its regulator’s rules on your money.

Module 1 · Lesson 3 of 5

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Last updated 19 October 2026

What you'll learn

What is a broker in forex?

A broker in forex is the firm that holds your trading account, gives you a platform and live prices, and fills your buy and sell orders. With a forex CFD, the broker is also the other party to your contract. It then keeps the risk or passes it on to banks and other liquidity providers.

Four terms come up straight away:

Think of a broker as a waiter: you order from the waiter, not the kitchen. Some restaurants cook in-house; others pass orders to outside kitchens. Either way, your order goes through the waiter.

This lesson is part of Market Basics.

Is a forex broker a broker or a dealer?

Strictly, a broker trades on behalf of its clients, while a dealer buys and sells for its own account, so a retail forex broker that is the other party to your trade is acting as a dealer. The US Securities and Exchange Commission (SEC) guide to broker-dealer registration draws this line: a broker effects transactions for the account of others, a dealer for its own account. The word "broker" on a website does not tell you which role a firm plays; its dealing model, covered in the types of forex broker below, does.

Who trades in the forex market?

The forex market is made up of central banks, large banks that act as dealers, other financial institutions such as funds, companies that need foreign currency, and retail traders who reach the market through brokers. Banks and dealers sit at the centre, trading heavily with each other and quoting prices to everyone else.

The Bank for International Settlements (BIS) counts this trading every three years. Its survey of April 2025 put turnover at $9.6 trillion a day. Trading between dealers was 46% of that, other financial institutions 50%, and non-financial customers 5%.

Participant What they do in forex
Central banks Manage their country's currency and reserves
Large banks (dealers) Quote prices, trade with each other, act as liquidity providers
Other financial institutions Funds, smaller banks and trading firms trading for investment or hedging
Companies Exchange currency to pay for imports or bring home overseas income
Retail traders Trade small sizes through a broker's platform

How does a forex broker work, from order to fill?

Your order goes from your trading platform to your broker, which either fills it itself or routes it to the market, and the result comes back to you as a confirmation. The route depends on the broker's dealing model, covered in the next section.

Order flow diagram: a trader sends an order to the broker, the broker routes it to liquidity providers or an exchange, and a confirmation returns to the trader
  1. You place a buy or sell order on your platform.
  2. Your broker receives the order.
  3. The order goes to the market: liquidity providers for over-the-counter products such as forex, or an exchange for exchange-traded products. A market maker can also fill it from its own book.
  4. The fill is confirmed back to you.

What are the types of forex brokers?

The three common types of forex broker are market makers, STP brokers and ECN-style brokers: a market maker keeps your trade's risk on its own book, while STP and ECN-style brokers pass your order, or a matching hedge, to outside liquidity providers. Many brokers mix both approaches, so a label alone does not show how trades are handled.

The European Securities and Markets Authority (ESMA) describes three models for CFD firms that are their client's counterparty: hedging all client orders with a liquidity provider, not hedging, or hedging only some (a hybrid). One firm may combine them. The UK Financial Conduct Authority (FCA) noted in its 2024 letter to CFD firms that most firms in its CFD portfolio trade as principal, meaning they are their clients' counterparty.

Market maker (dealing desk) STP (straight-through processing) ECN-style
Who carries the market risk The broker, on its own book A liquidity provider, through the broker's hedge Other participants on a shared network
Where your price comes from Set by the broker, usually based on wider market prices Liquidity provider quotes, often with a mark-up Best prices from several participants
Main way the broker earns Spread, plus the result of client trades it does not hedge Mark-up on the spread and commission Commission per lot

How do forex brokers make money?

Forex brokers make money mainly from the spread, commission on each trade, and swap, the overnight financing charge on positions held past the daily rollover. Some also charge account fees. How these work in detail is covered in spread, commission and swap.

Worked example, with synthetic numbers. You buy 0.10 lot of EURUSD, where one pip is worth $1. You hold it for two nights:

Cost item Figure Cost
Liquidity provider spread 0.5 pip × $1 $0.50
Broker's mark-up on the spread 1.0 pip × $1 $1.00
Commission, round turn $7 per lot × 0.10 $0.70
Swap 2 nights × −$0.80 $1.60
Total $3.80

The spread you see is 1.5 pips: the provider's 0.5 plus the broker's 1.0. MT5 shows that $3. The pip value calculator works out what a pip is worth on other pairs and sizes.

Here, an STP-style broker would keep the $1.00 mark-up and the $0.70 commission, plus any mark-up inside the swap. A market maker also keeps the result of trades it does not hedge. Check your account's contract specification for real figures.

Why do regulation and client money segregation matter?

Regulation matters because a licensed broker must follow set rules on how it treats clients, prices trades and holds client money, and it answers to its regulator for them. Client money segregation is one of those rules: it keeps your deposits apart from the broker's own funds. You can confirm any broker's licence on its regulator's public register.

What is client money segregation?

Client money segregation means a broker keeps clients' money in accounts separate from its own money. The European Securities and Markets Authority (ESMA) explains in its guide to CFDs that proper segregation is what protects client funds if a provider gets into financial difficulty, and the FCA calls segregation of retail client money critically important when firms fail. Segregation covers the money owed to you; your trading results come from your positions.

What should you check before choosing a forex broker?

Before choosing a forex broker, check its licence, the company you contract with, and how it prices and fills your orders. You can check all three before you deposit, using the regulator's register, your client agreement and the broker's order execution policy, then compare the total cost of the same trade across accounts.

Slippage and trading costs come up again in Module 5, Risk Management.

Try it on demo

In MetaTrader 5, open Market Watch, right-click EURUSD and choose Specification to see the contract size, swap and trading hours. Then right-click Market Watch, switch on the Spread column and compare EURUSD with a less-traded pair at a busy and a quiet time of day. Place a small demo order and read its fill price in the History tab against the price you saw when you clicked.

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Quick check

  1. What does a liquidity provider do?
  2. In a market maker model, who is on the other side of your trade?
  3. Most forex is traded
  4. A liquidity provider quotes a 0.5-pip spread and your broker shows 1.5 pips on 0.10 lot of EURUSD at $1 per pip. The broker's mark-up is worth
  5. Why does client money segregation matter?

Frequently asked questions

Do I need a broker to trade forex?

Retail traders generally do. Forex has no central exchange to join; banks and dealers trade directly with each other, over the counter. A broker gives you the account, platform and prices to take part, usually through a contract such as a CFD rather than by buying currency.

Which is better, an ECN or a market maker broker?

It comes down to total cost and execution. ECN-style accounts often show narrower spreads plus commission, while market maker accounts often build costs into a wider spread. Compare the total cost of the same trade and the execution policy on each account, not the label.

How do I know if a forex broker is regulated?

Look up the firm's exact company name on the public register of the regulator that licensed it. Then check that the same company name appears on your client agreement.

What is a liquidity provider in forex?

A liquidity provider is a large bank or dealer that stands ready to buy and sell, quoting prices that others can trade on. Brokers stream these quotes to your platform, often with a mark-up, and STP and ECN-style brokers pass your orders, or matching hedges, on to them.

Sources

Practise what you learned

Open an account to use MetaTrader 5. Start on a demo account before risking real money.

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