Chapter 14: Types of Forex Brokers (ECN, STP & Market Maker)

In Chapter 8, we learned about the Spread—the difference between the Bid and Ask price. But how exactly does your broker process your trade, and where does that spread go? The answer depends entirely on the type of broker you use.

Choosing the right broker model is one of the most critical decisions in your trading journey. Not all Forex brokers operate the same way under the hood. Brokers are broadly divided into two main operational categories: Dealing Desk (DD) and No Dealing Desk (NDD).

1. The Broker Hierarchy

Before diving into the details, it helps to visualize how different broker models handle your orders:

2. Market Maker (Dealing Desk / DD)

A Market Maker literally “makes” its own internal market for its clients. When you click buy, the market maker sells to you; when you click sell, the market maker buys from you.

• How it works: The broker takes the opposite side of your trade. If you lose, the broker makes a profit; if you win, the broker pays you out of its own funds.
• Pricing Model: They offer fixed spreads or wider variable spreads with zero commission per trade.

3. STP Broker (Straight-Through Processing / NDD)

An STP Broker routes your orders directly to external liquidity providers (such as major banks, hedge funds, or prime brokers) without passing them through a dealing desk.

• How it works: The broker acts strictly as an intermediary. They automatically route your order to whichever liquidity provider is offering the best price at that moment.
• Pricing Model: They usually add a small markup to the raw spread provided by banks (variable spreads, no commissions).

4. ECN Broker (Electronic Communication Network / NDD)

An ECN Broker connects your trade directly to a digital network of institutional market participants (banks, financial institutions, and other individual traders).

• How it works: Instead of choosing a single best bid/ask, an ECN pools all buyer and seller quotes in a live order book (Depth of Market). Your orders interact directly with other real market participants.
• Pricing Model: They pass through raw spreads (often starting at 0.0 pips) and charge a transparent fixed commission fee per lot traded (e.g., $3.50 per standard lot side).

5. Comparison Matrix

6. The Hybrid Broker Model

It is worth noting that many modern brokers operate a Hybrid Model. They might route small retail accounts through a Market Maker / Dealing Desk model (A-Book / B-Book handling) while routing larger professional accounts through ECN/STP liquidity pipelines. This allows them to offer micro-lots to beginners while still providing institutional execution for high-volume traders.