Broker for scalping — spread, commission and execution

A scalper grabs five pips and closes. Then does it fifty times a day. At that pace the cost of one trade stops being a line in the price list and becomes the main opponent. A swing trader aiming for a hundred pips can treat the spread as rounding. A scalper has no such luxury — for them, two tenths of a pip is the line between a strategy that earns after costs and one that just feeds the broker. That is why choosing an account starts not with the platform, but with arithmetic.

Why scalping lives and dies on costs

Every strategy pays an entry cost, but scalping pays it most often and against the smallest target. If your profit per trade is five pips and the round-turn cost alone is two pips, you hand the broker 40 percent of the target before you even start managing the position. That same two-pip cost for a swing trader aiming at a hundred pips is two percent — noise that disappears in the result. This is not a nuance, it is a difference of an order of magnitude.

The second thing is frequency. Cost does not scale with your talent, it scales with the number of trades. Fifty entries a day across twenty trading days is a thousand trades a month. Every fraction of a pip you save on one trade gets multiplied by a thousand. That is why a scalper who ignores cost structure usually does not lose on the market — they lose on the statement, giving away their edge in hundreds of tiny fees they barely notice one at a time.

A tight spread with commission versus a wider spread alone

Brokers package the cost in two ways. A Standard account usually has no commission but a wider spread — the whole cost sits in the price. A Raw or ECN account cuts the spread close to zero but adds an explicit per-lot commission, most often charged separately on opening and closing. These are not two levels of honesty, just two wrappers for the same fee. To compare them, you have to reduce both to one number: the full cost of one trade in money.

The formula is simple and works for any price list: total cost = spread in pips × pip value + round-turn commission. For EUR/USD at one standard lot a pip is worth about 10 dollars. With that number, you stop comparing pips to dollars and see the truth.

Let me use a hypothetical comparison — the figures are illustrative and meant to show the mechanism, so check your own rates with your broker.

On a single trade four dollars is trivial. But a scalper trades volume. At fifty trades a day that is 200 dollars a day and roughly 4,000 dollars a month that stays in your account instead of the broker's. That is why, for active trading, a tight spread with commission almost always beats a spread alone. The exception shows up only on micro-positions: many ECN brokers apply a minimum commission per order that, at a 0.01-lot position, can be higher than the proportional commission — and then a plain spread works out cheaper. I develop the full logic of both models in the piece on spread versus commission.

"For an active trader the spread is the largest cost they actually control — which is precisely why choosing a broker with tight spreads is a financial decision, not a cosmetic one." — Kathy Lien, Day Trading and Swing Trading the Currency Market (Wiley, 2016)

Execution, latency and slippage — the scalper's second front

The cheapest price list in the world will not help if your order fills half a pip worse than you saw on the screen. That gap is slippage, and against a five-pip target half a pip is instantly 10 percent less. A requote, in turn, is when the broker, instead of filling your order at the quoted price, offers you a new one — in scalping, where fractions of a second matter, that is a late or lost entry. So for a scalper the speed and quality of execution matter just as much as the spread.

What to actually check? First, the execution model: market execution rather than dealer-style execution, with no requotes on ordinary, liquid pairs. Second, latency — how far the broker's servers physically sit from the exchange points of presence. Brokers built for active trading advertise their server location; IC Markets, for example, states that its infrastructure sits in the Equinix NY4 data centre in New York, close to the main liquidity. For a scalper that is not marketing, it is real pips. I unpack the mechanics of fill time in a separate piece on order execution time, and the difference between models in the ECN versus market maker comparison. For a structured walk-through of the selection itself, ForexMechanics covers choosing a broker in more depth.

The broker rulebook — when scalping is restricted

Before you count costs, check whether the broker even lets you do what you plan. Some firms, especially in the market-maker model, restrict scalping in their terms. Typical clauses are a minimum holding time, a ban on trading in the window around macro releases, or a ban on strategies that exploit quote latency. Automated trading through an Expert Advisor may be allowed only on selected account types, and some brokers reserve the right to cancel profits judged to be the result of latency arbitrage.

This is not always dishonesty. A market maker that is itself the counterparty to your trade has a natural interest in limiting strategies that beat it consistently. The ECN model, where the broker only intermediates access to the market, less often has a reason for such clauses. The practical takeaway: read the terms and the trading-conditions document before you deposit, not after your first voided profit. If news scalping matters to you, make sure it is not explicitly banned.

How much cost a scalper really sees

Spread and commission are the core of the bill, but not the whole cost. If you leave a position open overnight, swap points are added — usually irrelevant for a scalper who closes the same day, but worth knowing they exist. On top of that come currency-conversion fees on deposits and withdrawals and a possible inactivity fee. The transaction cost itself also rises in practice when the spread widens in hours of low liquidity or around macro data — and those are exactly the moments many scalpers go looking for movement.

So a scalper's real cost is not one number from an advert, but a distribution: how much you pay in a calm London session, and how much at three in the morning or a minute after an inflation print. I cover the full set of items that make up the bill separately in the piece on the real costs of trading. Without that map it is easy to pick an account that looks cheap in the brochure and turns out expensive in your specific trading window.

What to do before you open a scalping account

1. Compute the cost per trade for your pair. Put the spread and commission into the formula and compare several accounts in one currency — the total round-turn cost. Check the minimum commission per order at the same time, because that is what spoils the maths on micro-positions.
2. Verify execution, not just the spread. Check the declared execution model, the server location and whether the broker uses requotes. Best of all, test orders on a demo account in the hours you actually trade — including the data-release window.
3. Read the terms for scalping and EAs. Look for clauses on a minimum holding time, news trading and automated trading. If you plan an Expert Advisor or news scalping, make sure the account you choose allows it.
4. Check regulation and protection. A broker under EU supervision must fully disclose costs and provide negative-balance protection — this does not depend on your trading style, but for a scalper using leverage it matters in practice.