Quick Answer
A market maker takes the opposite side of your trade and sets prices internally. An ECN broker passes your order to a pool of liquidity providers and charges commission instead of a spread markup. For scalping EAs, ECN or STP with raw spreads is preferred — tighter costs and no conflict of interest. Market maker accounts can work for lower-frequency strategies where spread is less critical.
How Each Model Handles Your Order
Animated trade flow showing the path your order takes in each execution model.
Broker internalises your order — no external matching
Order routes to external liquidity pool for matching
How Market Makers Work
A market maker creates a market for you by quoting both a bid and an ask price, and taking the opposite side of your trade. When you buy 0.1 lots of XAUUSD at a market maker, the broker effectively sells 0.1 lots to you. They profit from the spread between the buy and sell price, and from the statistical advantage of managing a large book of offsetting client positions.
Market makers typically offer fixed spreads on standard accounts — the XAUUSD spread is set at a fixed value regardless of time of day or market conditions. This can be an advantage (predictable cost) or a disadvantage (the fixed spread may be wider than raw spreads during peak liquidity hours). Many market makers also offer "standard" accounts without commission and no separate commission charge.
The structural concern with market makers is conflict of interest: if the broker does not hedge your trade externally, your loss is their gain. Reputable, regulated market makers hedge systematically and do not rely on client losses to be profitable. However, the incentive structure exists regardless of how individual brokers behave.
How ECN Brokers Work
ECN (Electronic Communication Network) brokers do not take the other side of your trade. Instead, they pass your order to a network of liquidity providers — typically large banks, institutional traders, and other market participants — who compete to fill your order at the best available price. The broker earns revenue from a commission charged per trade rather than from spread markup.
The result is raw spreads: on XAUUSD during peak liquidity (the London-New York overlap), ECN spreads can be as low as 0–3 points. Outside peak hours, they widen to reflect actual market conditions rather than a fixed broker markup. This transparency is the primary advantage — the spread you see reflects actual interbank liquidity, not a broker pricing decision.
ECN brokers have no incentive for clients to lose money — their revenue comes entirely from commission volume. This removes the conflict of interest inherent in the market maker model and generally results in no restrictions on trading styles, including scalping and algorithmic trading.
Model Comparison: Market Maker vs ECN
| Factor | Market Maker | ECN / STP |
|---|---|---|
| Spread type | Fixed (set by broker) | Variable (reflects market) |
| Commission | Usually none | $3–$8 per lot round trip |
| Who takes the other side | The broker internally | External liquidity providers |
| Conflict of interest | Structural — broker benefits if you lose | None — broker earns commission regardless |
| Best for EAs | Lower-frequency, larger targets | Scalping, high-frequency, tight targets |
| Typical XAUUSD spread (peak) | 15–30 points fixed | 0–8 points raw + commission |
| Re-quote risk | Higher (instant execution model) | Minimal (market execution) |
| Algorithmic trading | Often restricted or monitored | Generally permitted freely |
When a Market Maker Account Is Acceptable
ECN is not always the right choice. Circumstances where a market maker account may be preferable or equivalent include:
Low-frequency trading (1–3 trades per day)
The cost difference between a 20-point fixed spread and a 5-point raw spread plus $5 commission is minimal over 3 trades per day. The fixed spread's predictability can simplify cost calculations for position traders.
Larger profit targets (100+ pips)
When targets are large relative to the spread, the spread cost is a smaller percentage of the expected return. A 15-point spread on a 150-pip target is a 10% cost; on a 30-pip target it is 50%.
Scalping EAs with tight targets
A scalping EA targeting 20 pips with a 20-point spread starts every trade 20 points in the hole. The break-even point is effectively doubled. ECN with raw spreads is clearly better for this use case.
High-frequency EAs (10+ trades per day)
Commission costs are multiplied by trade count. At $5 per round trip with 10 trades daily, that is $50 per day in commission — significant for a small account. However, the raw spread savings typically outweigh commission on high-frequency ECN accounts.
For breakout-based EAs like Goldie Razor V2.8.4 — which executes on M15 with 7–10 trades per day and needs tight cost structure to maintain positive expectancy — an ECN or raw spread STP account is the appropriate choice. The 8–15 point spread advantage during peak hours relative to a fixed spread account meaningfully improves the strategy's profitability over time.
Related Questions
Frequently Asked Questions
Goldie Razor V2.8.4
M15 breakout + H4 EMA filter — built for XAUUSD on MT5