Market Maker vs ECN Brokers: What Actually Matters

Every forex broker answers one question differently: what happens to your order after you click buy? The answer decides whether you pay through spreads or commissions, and whether your broker profits when you lose. It is worth understanding, but not for the reason most articles suggest — the labels themselves are marketing, and the only thing that separates two accounts in practice is the all-in cost per lot and the quality of the fills.

Market makers (B-book): the broker takes the other side

A market maker fills your order from its own book. When you buy, it sells to you; it does not necessarily pass anything to the wider market. Spreads are often fixed, minimum deposits are low, and the account is simple to understand, which is why this model dominates the beginner end of the industry.

The conflict of interest is structural rather than malicious: if you lose, the desk keeps the money. Regulated market makers manage that with internal netting — one client's long offsets another's short — and hedge only the residual exposure, so the desk's profit comes mostly from the spread and the netting rather than from any individual client. The incentive never fully disappears, though, and it is the reason the model attracts the strongest opinions.

ECN and raw-spread brokers (A-book): the broker passes it on

An A-book broker routes your order to liquidity providers — banks, non-bank market makers, and other clients on the same network — and charges a visible commission on top of the raw spread it receives. Typical retail pricing sits around $3.00-$3.50 per lot per side, so $6-$7 for a round turn, on top of spreads that start near zero on the major pairs.

Because the revenue is the commission, the broker profits from your volume rather than your losses, and its interest points toward keeping you trading for years. That alignment is real, but it is not a guarantee of better execution: what you get still depends on which liquidity providers the broker uses, how it aggregates them, and whether those providers apply last-look rejection.

Most brokers are neither, exactly

The pure categories are rarer than the marketing implies. Most large brokers run a hybrid book: orders from clients whose trading has been profitable are routed to liquidity providers, and the rest are internalised. The routing decision is made by risk software, per client and sometimes per instrument, and it is not disclosed.

"No dealing desk", "STP" and "true ECN" are not regulated terms and no register defines them. A broker can describe itself as ECN while internalising most retail flow. This is why the execution model is a weak filter on its own, and why the two questions below are better ones.

Compare all-in cost, not spread

Commission and spread are the same cost wearing different clothes, and they convert cleanly. On EUR/USD a standard lot is worth about $10 per pip, so a $7 round-turn commission is exactly 0.7 pips. Add it to the raw spread and you have one number to compare against a commission-free account.

A raw account quoting 0.1 pips with $7 round turn costs 0.8 pips all in. A commission-free "standard" account quoting 1.2 pips costs 1.2 pips. The raw account is a third cheaper, and no amount of advertising about zero spreads or zero commission changes that arithmetic. Run the same sum on the pairs you actually trade: the gap between the two models is usually widest on majors and narrowest on exotics, where raw spreads are wide for everyone.

Measure it at the times you trade, too. An advertised "average" spread is an average over the whole session, including the liquid London hours. If you trade the Asian session or the minutes around a data release, the spread you meet is not the one on the marketing page.

Then compare execution, which costs more than the spread

Slippage is the difference between the price you clicked and the price you got, and over a year it usually dwarfs a 0.1 pip difference in the quoted spread. What matters is not whether slippage happens — it always does — but whether it is symmetrical. A broker that passes on negative slippage and quietly keeps positive slippage is charging you a fee that appears in no fee table.

Check three things in the account terms: whether the broker reports positive as well as negative slippage, whether market orders can be requoted, and what the stated execution speed is. Then test it with small positions before committing size, particularly around news, which is where the difference between models actually shows up.

Where the model genuinely does matter

Three kinds of trader should care about the routing, not just the cost. Scalpers holding positions for seconds are the flow a B-book desk least wants, and restrictions — minimum stop distances, minimum holding times, or an account quietly moved to a slower execution profile — are most common there. News traders meet the same problem in the form of widened spreads and rejected orders. And anyone running an expert advisor at high frequency is testing the broker's infrastructure rather than its pricing.

For a position trader holding for days, the routing is close to irrelevant and the costs that matter are swaps and the spread at the two moments they enter and exit. It is worth being honest about which of these you are before choosing an account on execution grounds.

What to check before you open either kind of account

Regulation first, because it decides what happens when something goes wrong rather than how much a trade costs: the entity on your account agreement, its licence, whether client money is segregated, and whether negative balance protection applies to you.

Then the all-in cost per lot on your pairs, the swap rates if you hold overnight, and the withdrawal process — fees, timing, and whether the method you deposited with is the one you must withdraw to. Our broker reviews list the account types side by side with their spreads and commissions, and our comparison tables put two brokers' real costs next to each other, which is a faster way to do this than reading two websites.

Frequently asked questions

Is an ECN broker always better than a market maker?

No. An ECN-style account is usually cheaper on majors once commission is converted into pips, but a well-run market maker with tight fixed spreads can be cheaper on small positions, and regulation and execution quality matter more than the label either one uses.

How do I convert commission into pips?

On a pair quoted against the US dollar, a standard lot moves about $10 per pip, so divide the round-turn commission by 10. A $7 round turn is 0.7 pips, which you add to the raw spread to get the all-in cost.

Does a B-book broker want me to lose?

The desk keeps the money when a client loses, so the incentive exists. In practice most of a regulated market maker's revenue comes from spreads and from netting opposing client positions against each other, and only the residual exposure is hedged in the market.

What is a hybrid book?

It is the common arrangement where a broker routes some clients to liquidity providers and internalises the rest, deciding per client with risk software. It is not usually disclosed, which is why the advertised execution model is a weak guide on its own.

Are raw spread accounts worth the commission?

On major pairs, usually yes — the all-in cost is typically lower than a commission-free account on the same pair. On exotics, where the raw spread is wide regardless, the advantage shrinks and is sometimes reversed.

Does 'no dealing desk' mean anything?

Not as a regulated term. No register defines it and no regulator audits it, so it tells you what the broker wants to be associated with rather than how your order is handled.